The present invention provides a polymer-coated glass base material on which the adsorption of normal cells such as blood cells is prevented and onto which a specific type of cells such as cancer cells, stem cells, and T cells can be selectively adsorbed. The present invention pertains to a polymer-coated glass base material in which one or more polymer layers are formed on the surface of a glass base material, wherein the glass is a soda lime glass having a contact angle of an air bubble in water of 100 degrees to 120 degrees inclusive, and the surface of an outermost layer among the polymer layers has an elastic modulus of 1.20 MPa or less in water or in an aqueous solution.
C03C 17/32 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
C03C 17/34 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
C08F 20/28 - Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
C12M 1/00 - Apparatus for enzymology or microbiology
A golf club includes a head, a shaft, and a grip. The head has a center-of-gravity depth of greater than or equal to 23.5 mm. The head has a center-of-gravity distance of less than or equal to 39 mm. The shaft has a forward flex of greater than or equal to 110 mm. When f1 denotes the forward flex of the shaft and f2 denotes a backward flex of the shaft, f2/f1 may be greater than or equal to 0.8 and less than or equal to 0.9. The head may have a volume of greater than or equal to 380 cc. The shaft may have a weight of less than or equal to 50 g.
A golf club head includes a crown, a heel portion, a toe portion opposite the heel portion, a sole opposite the crown, and a striking face. The striking face includes a striking face periphery, a heel-wardmost extent, a toe-wardmost extent, a lowermost extent, an uppermost extent, and a face center. A maximum characteristic time of the striking face corresponds to a point P1 on the striking face. The point P1 is laterally spaced from the face center by a distance D6. The distance D6 is no less than 21.3 mm.
Provided is a tire comprising an inner liner and an insulation touching the inner liner on an outer side of the inner liner in a tire radial direction, wherein the insulation is composed of a rubber composition comprising a recovered carbon black, wherein an air permeation coefficient of a rubber composition constituting the inner liner is less than 18×10−11 cm3·cm/(cm2·s·cmHg), wherein a thickness of the inner liner on a tire equatorial plane is 1.5 mm or less, and wherein a loss tangent at 70° C., 70° C. tan δ, of a complex of the insulation and the inner liner is 0.22 or less.
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
[Problem] To provide a method for producing a medical rubber article in which the surface friction coefficient and tackiness are reduced. [Solution] This method for producing a medical rubber composition is characterized by comprising a step for irradiating, with ultraviolet rays, a cured product of a medical rubber composition containing (a) a base polymer containing a halogenated butyl rubber and (b) a particulate polyolefin resin.
A61M 5/315 - PistonsPiston-rodsGuiding, blocking or restricting the movement of the rodAppliances on the rod for facilitating dosing
A61M 5/32 - NeedlesDetails of needles pertaining to their connection with syringe or hubAccessories for bringing the needle into, or holding the needle on, the bodyDevices for protection of needles
C08L 23/28 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
8.
MEDICAL RUBBER ARTICLE AND PRODUCTION METHOD THEREFOR
A61M 5/315 - PistonsPiston-rodsGuiding, blocking or restricting the movement of the rodAppliances on the rod for facilitating dosing
A61M 5/32 - NeedlesDetails of needles pertaining to their connection with syringe or hubAccessories for bringing the needle into, or holding the needle on, the bodyDevices for protection of needles
[Problem] To provide: a syringe gasket of which the surface has a reduced friction coefficient and adhesiveness; and a method for manufacturing the same. [Solution] A syringe gasket according to the present invention is characterized: by being formed from a rubber composition that contains (a) a base polymer containing a halogenated butyl rubber and (b) resin particles; and in that, in relation to an image analysis result obtained when the surface roughness is measured by using a laser microscope, at least a portion of the surface satisfies P = (Vmp/V) ≥ 0.25 where Vmp (mL/m2) is the volume of a protruding ridge section at which the load area ratio by which a core section and the protruding ridge section are separated is 40%, and V (mass%) is the amount of (a) the base polymer contained in the rubber composition.
A61M 5/315 - PistonsPiston-rodsGuiding, blocking or restricting the movement of the rodAppliances on the rod for facilitating dosing
C08J 7/00 - Chemical treatment or coating of shaped articles made of macromolecular substances
C08L 23/02 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers not modified by chemical after-treatment
C08L 23/28 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
C09K 3/10 - Materials not provided for elsewhere for sealing or packing joints or covers
F16J 15/12 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
10.
SULFUR-BASED ACTIVE MATERIAL, ELECTRODE, LITHIUM-ION SECONDARY BATTERY, AND PRODUCING METHODS THEREOF
It is an object of the present invention to improve a volumetric energy density while maintaining a capacity retention rate of an active material that constitutes an electrode of a lithium-ion secondary battery. Provided is a method of producing a sulfur-based active material, the method comprising the steps of: (1) mixing an acrylic resin, sulfur, and an iron compound comprising a divalent or trivalent iron ion to obtain a raw material; and (2) baking the raw material; wherein the iron compound has a median diameter of 12.00 μm or less.
[Problem] To provide a method for producing a medical rubber article which has a surface having a reduced coefficient of friction and reduced tackiness. [Solution] This method for producing a medical rubber article is characterized by including (a) a step in which as a base rubber, a cured object formed from a medical rubber composition including a halogenated butyl rubber is irradiated with ultraviolet light.
A61M 5/315 - PistonsPiston-rodsGuiding, blocking or restricting the movement of the rodAppliances on the rod for facilitating dosing
A61M 5/32 - NeedlesDetails of needles pertaining to their connection with syringe or hubAccessories for bringing the needle into, or holding the needle on, the bodyDevices for protection of needles
The present disclosure provides a tire that has both excellent wet grip performance and excellent dry grip performance. The tire of the present disclosure includes a tread with at least one circumferential groove, the circumferential groove being formed of a groove-forming rubber composition, E* (MPa) when wet with water, E* (MPa) when dry, tan δ when wet with water, and tan δ when dry of the groove-forming rubber composition and groove depth D (mm) of the circumferential groove satisfying at least one of the following formula (1-1) or the following formula (1-2) as well as the following formula (2):
The present disclosure provides a tire that has both excellent wet grip performance and excellent dry grip performance. The tire of the present disclosure includes a tread with at least one circumferential groove, the circumferential groove being formed of a groove-forming rubber composition, E* (MPa) when wet with water, E* (MPa) when dry, tan δ when wet with water, and tan δ when dry of the groove-forming rubber composition and groove depth D (mm) of the circumferential groove satisfying at least one of the following formula (1-1) or the following formula (1-2) as well as the following formula (2):
E
*
when
wet
with
water
/
E
*
when
dry
≤
0.9
(
1
-
1
)
tan
δ
when
wet
with
water
/
tan
δ
when
dry
≥
1.1
(
1
-
2
)
D
/
(
E
*
when
wet
with
water
/
E
*
when
dry
)
>
9.
(
2
)
where E* and tan δ represent a complex modulus of elasticity (MPa) and a loss tangent, respectively, after 30 minutes from the start of measurement under the conditions of a temperature of 30° C., an initial strain of 10%, a dynamic strain of 1%, a frequency of 10 Hz, an elongation mode, and a measurement duration of 30 minutes, and D represents the groove depth (mm) of the circumferential groove.
Provided is a polymer-coated glass substrate having a surface with controlled irregularities and a low elastic modulus. The polymer-coated glass substrate includes a glass substrate and a hydrophilic polymer layer including a blend of hydrophilic polymers with different molecular weights, the hydrophilic polymer layer being on a surface of the glass substrate.
B01J 20/24 - Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
C03C 17/32 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
C12M 1/12 - Apparatus for enzymology or microbiology with sterilisation, filtration, or dialysis means
A golf club head has a hollow therein, and comprises a head main body including a face portion, a crown portion and a sole portion, and a weight member fixed to the head main body. The sole portion includes a toe side region, a heel side region and a center region therebetween. The center region is provided with a bulge portion which bulges downward than the outer surfaces of the toe side region and heel side region. The bulge portion has a bottom surface facing downward of the head, and a rear end surface extending upward from the bottom surface and facing toward the rear of the head. The rear end surface is provided with a recess into which the weight member is fixed so as to be located below the crown portion and above the bottom surface of the bulge portion.
A head includes a face portion including a striking face. The face portion includes a face main portion that includes: a central section including a face center, a transition section located outside the central section, and a peripheral section located outside the transition section. The peripheral section includes: a first peripheral subsection located in toe and heel side parts; and a second peripheral subsection located in crown and sole side parts. The transition section includes a first transition subsection located between the central section and the first peripheral subsection, and a second transition subsection located between the central section and the second peripheral subsection. The central section has a central section uniform wall thickness tc and a surface area of 100 mm2 or more. The first peripheral subsection has a wall thickness greater than the thickness tc. The second peripheral subsection has a wall thickness smaller than the thickness tc.
A golf club head includes a unitary component. The unitary component is formed of a stainless steel material. The unitary component has variable hardness. A first portion of the component exhibits a first hardness H1 no less than 50HRC. A second portion of the component exhibits a second hardness H2 no greater than 85HRB.
The present disclosure provides a tire with an improved overall performance in terms of wet performance and dry performance. The present disclosure relates to a tire, including a tread with at least one circumferential groove, the circumferential groove being formed of a groove-forming rubber composition containing a rubber component and silica, tan δ when wet with water and tan δ when dry of the groove-forming rubber composition and a ratio Z of a largest groove depth D (mm) of the circumferential groove to a largest thickness T (mm) of the tread satisfying the following formulas (1) and (2):
The present disclosure provides a tire with an improved overall performance in terms of wet performance and dry performance. The present disclosure relates to a tire, including a tread with at least one circumferential groove, the circumferential groove being formed of a groove-forming rubber composition containing a rubber component and silica, tan δ when wet with water and tan δ when dry of the groove-forming rubber composition and a ratio Z of a largest groove depth D (mm) of the circumferential groove to a largest thickness T (mm) of the tread satisfying the following formulas (1) and (2):
tan δ when wet with water/tan δ when dry>1.00 (1)
The present disclosure provides a tire with an improved overall performance in terms of wet performance and dry performance. The present disclosure relates to a tire, including a tread with at least one circumferential groove, the circumferential groove being formed of a groove-forming rubber composition containing a rubber component and silica, tan δ when wet with water and tan δ when dry of the groove-forming rubber composition and a ratio Z of a largest groove depth D (mm) of the circumferential groove to a largest thickness T (mm) of the tread satisfying the following formulas (1) and (2):
tan δ when wet with water/tan δ when dry>1.00 (1)
Z≥0.10 (2)
The present disclosure provides a tire with an improved overall performance in terms of wet performance and dry performance. The present disclosure relates to a tire, including a tread with at least one circumferential groove, the circumferential groove being formed of a groove-forming rubber composition containing a rubber component and silica, tan δ when wet with water and tan δ when dry of the groove-forming rubber composition and a ratio Z of a largest groove depth D (mm) of the circumferential groove to a largest thickness T (mm) of the tread satisfying the following formulas (1) and (2):
tan δ when wet with water/tan δ when dry>1.00 (1)
Z≥0.10 (2)
where tan δ represents a loss tangent after 30 minutes from the start of measurement under the conditions of a temperature of 30° C., an initial strain of 10%, a dynamic strain of 1%, a frequency of 10 Hz, an elongation mode, and a measurement duration of 30 minutes, and Z represents the ratio D/T.
A tire can include a tread and a belt. Each end of a base layer of the tread can be located axially inward of an end of the belt. The tread can include circumferential grooves, thereby forming land portions including a crown land portion, a shoulder land portion, and a middle land portion. A cap layer proportion ARc of the crown land portion can be not less than 1.5 and not greater than 3.5. A cap layer proportion ARm of the middle land portion can be equal to or higher than the cap layer proportion ARc of the crown land portion. A cap layer proportion ARs of the shoulder land portion can be higher than the cap layer proportion ARm of the middle land portion and not less than 5.0 and not greater than 9.5.
Provided is a tire comprising a tread part having a first layer comprising a rubber component and a filler, wherein a maximum load capacity WL, a tire weight G, a land ratio R, 30° C. E*D of the first layer, 30° C. E*W of the first layer, 30° C. tan δD of the first layer, and 30° C. tan δW of the first layer satisfy a give relationship.
A tire 2 includes a pair of beads 10, a carcass 12 including a carcass ply 36, a pair of sidewalls 6, a pair of chafers 8, and a tag member 22 including an RFID tag 54. The carcass ply 36 includes a ply body 38 and a pair of turned-up portions 40. A plurality of recesses 62 are provided on a side surface 26, of the tire 2, which includes a maximum width position PW of the tire 2. An end PF of the turned-up portion 40 and the plurality of recesses 62 overlap a boundary BS between the sidewall 6 and the chafer 8. Among the plurality of recesses 62, the recess 62 located on a radially outermost side is a first recess 62a, and the RFID tag 54 is located radially inward of the maximum width position PW and located radially outward of the first recess 62a.
A golf club head includes a face portion including a striking face, a body portion, and a weight member disposed in the body portion. The body portion includes a weight receiving portion on which the weight member is disposed. A toe-heel directional length of the weight member is greater than a top-sole directional length of the weight member. The body portion includes a sole thin-wall portion whose outer surface constitutes a part of a sole surface and whose wall thickness is 0.8 mm or greater and 4.6 mm or less. An inner surface of the sole thin-wall portion includes: a weight contact surface constituting a part of the weight receiving portion and being in contact with the weight member; and a space facing surface located on a face side of the weight contact surface and facing an empty space. The weight member is not exposed outside the golf club head.
[Problem] To provide a golf club head fitting device and the like that can easily specify an index related to a specification for a golf club head that is suited to the swing of each player. [Solution] A golf club head fitting device 200 includes an acquisition unit 201 that acquires measurement data obtained as a result of a measurement apparatus measuring the swing of a golf club by a player, a calculation unit 202 that calculates a swing index on the basis of the measurement data, and a selection unit 203 that selects at least one club head index related to a specification for a golf club head that is suited to the player on the basis of the swing index.
A63B 60/46 - Measurement devices associated with golf clubs, bats, rackets or the like for measuring physical parameters relating to sporting activity, e.g. baseball bats with impact indicators or bracelets for measuring the golf swing
A63B 69/36 - Training appliances or apparatus for special sports for golf
The present invention further improves the wear resistance and late-stage grip performance of a tire. The present invention is a tire, provided with a tread section, wherein: in a land section on a surface of the tread section, a groove is formed that comprises an opening section facing the surface of the tread section and a groove base section, and that has a width of 2 mm or less and a depth of 20 mm or less; the opening section and the groove base section intersect in plan view of the surface of the tread section; the proportion X of the area of the intersecting section of the opening section and the groove base section to the area of the opening section in plan view of the surface of the tread section is 95% or less; the tread section is formed from a rubber composition that includes a rubber constituent and carbon black, the carbon black content (by mass) Y being at least 20 parts by mass relative to 100 parts by mass of the rubber constituent; and X / Y < 4.
The present invention further improves later stage grip performance in a tire. This tire comprises a tread section. Formed in a land section of the surface of the tread section is a groove that has an opening section opening in the surface of the tread section, and a groove bottom section, and has a width of 2 mm or less and a depth of 20 mm or less. The opening section and the groove bottom section intersect when the surface of the tread section is viewed in plan view, and the ratio X of the area of the intersecting section of the opening section and the groove bottom section to the area of the opening section when the surface of the tread section is viewed in plan view is 95% or less. The tread section is formed from a rubber composition that includes a rubber component, silica, and carbon black, the ratio Y of the silica content (parts by mass) to the carbon black content (parts by mass) being greater than 50%. Furthermore, X/Y<1.5.
It is an object of the present invention to provide a novel sulfur-based active material that can improve in cycle characteristics, an electrode comprising the sulfur-based active material, that is, a positive electrode or a negative electrode, and a lithium-ion secondary battery comprising the electrode. Provided is a sulfur-based active material obtained by baking a mixture comprising an acryl-based monomer and sulfur, wherein a boiling point of the acryl-based monomer is 230° C. or higher.
A tire has a tread portion comprises four circumferential grooves and five land portions. The four circumferential grooves include a first shoulder circumferential groove, a second shoulder circumferential groove, a first crown circumferential groove and a second crown circumferential groove. The five land portions include a first middle land portion, a second middle land portion and a crown land portion. The first middle land portion is provided with first middle lateral grooves. The second middle land portion is provided with second middle lateral grooves. In a plan view of the tread portion, a first end of each first middle lateral groove overlaps with a first virtual zone, and a second end of each first middle lateral groove overlaps with a second virtual zone.
A tire 2 includes a tread 4 formed from a rubber composition containing: a rubber component including a styrene butadiene rubber; and a filler including silica. The tread 4 has a plurality of circumferential main grooves 10. The plurality of circumferential main grooves 10 define a pair of crown land portion 20 in the tread 4. Each crown land portion 20 has a crown narrow groove 24. Each crown narrow land portion 34 defined by the crown narrow groove 24 has a crown sipe 40. An amount CSB of the styrene butadiene rubber, an amount BS of the silica, a groove depth DGs of the crown sipe 40, and a groove depth DGg of the crown narrow groove 24 satisfy the following relational expression.
A tire 2 includes a tread 4 formed from a rubber composition containing: a rubber component including a styrene butadiene rubber; and a filler including silica. The tread 4 has a plurality of circumferential main grooves 10. The plurality of circumferential main grooves 10 define a pair of crown land portion 20 in the tread 4. Each crown land portion 20 has a crown narrow groove 24. Each crown narrow land portion 34 defined by the crown narrow groove 24 has a crown sipe 40. An amount CSB of the styrene butadiene rubber, an amount BS of the silica, a groove depth DGs of the crown sipe 40, and a groove depth DGg of the crown narrow groove 24 satisfy the following relational expression.
(
CSB
+
BS
)
/
(
DGg
-
DGs
)
≥
5
A pneumatic tire mountable and usable on a rim can include a tread portion having a ground contact surface, and a pair of sidewall portions extending inward in a tire radial direction from both sides of the tread portion in a tire axial direction. The rim can have a rim diameter of 10 to 18 inches. The rim can have a rim width that is 78% to 99% of a cross-sectional width of the tire. A ratio of a cross-sectional height of the tire to the cross-sectional width can be 30% to 45%. Each sidewall portion can have a buttress portion located on an outer side in the tire radial direction. A protector protruding outward in the tire axial direction can be on at least one of a pair of the buttress portions.
The present disclosure provides a rubber composition and a tire which can suppress changes in performances caused by changes in road conditions from dry to wet road surface or from wet to dry road surface. The tire of the present disclosure has E* when wet with water (MPa), E* when dry (MPa), tan δ when wet with water, tan δ when dry, 40% modulus (MPa) at 70° C. before a tensile test, and 40% modulus (MPa) at 70° C. after the tensile test which satisfy the following formulas (1) to (3):
(1) E* when wet with water/E* when dry ≤0.90
(2) tan δ when wet with water/tan δ when dry >1.00
(3) 40% modulus at 70° C. after tensile test/40% modulus at 70° C. before tensile test ≥0.45 where
E* and tan δ refer to a complex modulus of elasticity and a loss tangent, respectively, after 30 minutes from the start of measurement under the conditions of a temperature of 30° C., an initial strain of 10%, a dynamic strain of 1%, a frequency of 10 Hz, an elongation mode, and a measurement duration of 30 minutes;
40% modulus at 70° C. after the tensile test refers to a tensile stress at an elongation of 40% determined after extension of 50% at 70° C., releasing the stress, and then measuring the tensile stress at an elongation of 40% at 70° C. in accordance with JIS K 6251:2010; and
40% modulus at 70° C. before a tensile test refers to a tensile stress at an elongation of 40% measured before the tensile test at 70° C. in accordance with JIS K 6251:2010.
C08L 51/04 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to rubbers
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
C08C 19/28 - Reaction with compounds containing carbon-to-carbon unsaturated bonds
C08C 19/36 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with oxygen or oxygen-containing groups with carboxy radicals
C08F 279/06 - Vinyl aromatic monomers and methacrylates as the only monomers
The present disclosure is a two-wheeled vehicle tire for running on rough terrain having a tread portion. The tread portion includes a first tread edge, a second tread edge, a tread development width, a tire equator, a crown region, and side regions. The tread portion includes a plurality of crown blocks and a plurality of outer blocks. Each of the outer blocks has a ground contacting surface at least provided with a narrow groove or configured as a stepped surface including a base surface and a protruding surface locally protruding outward in a block height direction with respect to the base surface. Each of the crown blocks has a ground contacting surface provided with the narrow groove and configured as a non-step surface without the protruding surface.
This racket string includes a filament. The filament contains a polymer matrix and carbon nanotubes that are dispersed in the polymer matrix. The polymer matrix is composed of one kind of thermoplastic polymer, or two or more kinds of thermoplastic polymers having compatibility. A racket includes the racket string. A method for producing the racket string includes: a step for mixing and dispersing carbon nanotubes in a first thermoplastic polymer; a step for obtaining a thermoplastic composition by mixing a first thermoplastic polymer, in which the carbon nanotubes are dispersed, and a second thermoplastic polymer having compatibility with the first thermoplastic polymer; and a step for obtaining a filament by melt-spinning the thermoplastic composition.
H01M 4/60 - Selection of substances as active materials, active masses, active liquids of organic compounds
H01M 4/137 - Electrodes based on electro-active polymers
H01M 4/1397 - Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
Provided is a tire with increased crack growth resistance. The present disclosure relates to a tire, including a tire external layer component including a rubber composition that contains a rubber component, an acid-modified liquid polymer, and a metal filler, the tire satisfying the following formula (1):
Provided is a tire with increased crack growth resistance. The present disclosure relates to a tire, including a tire external layer component including a rubber composition that contains a rubber component, an acid-modified liquid polymer, and a metal filler, the tire satisfying the following formula (1):
0
.
4
≤
F
/
T
≤
1
0
.
0
(
1
)
Provided is a tire with increased crack growth resistance. The present disclosure relates to a tire, including a tire external layer component including a rubber composition that contains a rubber component, an acid-modified liquid polymer, and a metal filler, the tire satisfying the following formula (1):
0
.
4
≤
F
/
T
≤
1
0
.
0
(
1
)
where F denotes an amount (parts by mass) of the metal filler per 100 parts by mass of the rubber component, and T denotes a largest thickness (mm) of the tire external layer component.
A golf club head includes a face portion including a striking face. The face portion includes a metal face portion made of a metal and a urethane layer member disposed outside the metal face portion and made of a polyurethane. A covered part, which is covered by the urethane layer member, of an outer surface of the metal face portion has a surface roughness of greater than 4.5 μm when expressed by an arithmetic mean roughness Ra or has a surface roughness of greater than 25 μm when expressed by a maximum peak-to-valley height Rz. In the golf club head, the surface roughness of the outer surface of the metal face portion may be greater than 4.5 μm when expressed by the arithmetic mean roughness Ra and greater than 25 μm when expressed by the maximum peak-to-valley height Rz.
An object of the present disclosure is to provide a golf ball that bends in a great amplitude on short iron shots and rolls in a short distance after landing. The present disclosure provides a golf ball comprising a spherical core, one or more intermediate layer positioned outside the spherical core, and an outermost cover positioned outside the intermediate layer and having a plurality of dimples formed thereon, wherein the spherical core is formed from a rubber composition containing a rubber component, a co-crosslinking agent, and a crosslinking initiator, the rubber component contains a natural rubber, the co-crosslinking agent contains methacrylic acid and/or a metal salt thereof, a total lower volume Vi (mm3) of the plurality of dimples is less than 365 mm3, and an occupation ratio of the dimples is 75% or more.
An object of the present disclosure is to provide a golf ball that rolls a short distance on fairway wood shots and has excellent controllability of a flight distance. The present disclosure provides a golf ball comprising a spherical core, at least one intermediate layer positioned outside the spherical core, and an outermost cover positioned outside the intermediate layer and having a plurality of dimples formed thereon, wherein the spherical core is formed from a rubber composition containing a rubber component, a co-crosslinking agent, and a crosslinking initiator, the rubber component contains a natural rubber, a total lower volume Vi (mm3) of the plurality of dimples is less than 365 mm3, and an occupation ratio of the dimples is 75% or more.
A correlated set of golf clubs includes a first golf club and a second golf club. The first and second golf clubs are successively-lofted and differ in loft by no less than 6°. The correlated set further includes a third golf club that has a loft L3. The loft L3 differs from a loft Lc of a closest-lofted golf club of the correlated set by no more than 3°. The third golf club has a non-loft variant.
With the purpose of improving a capacity retention rate and charge/discharge capacity for an active material comprised in an electrode of a lithium ion secondary battery, this invention provides an electrode active material made up of particles containing an organic sulfur compound and carbon material.
H01M 4/137 - Electrodes based on electro-active polymers
H01M 4/1397 - Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
65.
ELECTRODE ACTIVE MATERIAL, ELECTRODE, AND LITHIUM ION SECONDARY BATTERY
The purpose of the present invention is to improve the charge/discharge capacity and capacity retention rate of an active material constituting an electrode of a lithium ion secondary battery. Provided is an electrode active material comprising particles that include an organosulfur compound and a metal compound including at least one metal selected from the group consisting of iron, molybdenum, vanadium, and titanium, wherein: the powder resistivity of the particles is less than 1.0×103SPSPSPP ≥ 0.05
B60C 11/00 - Tyre tread bandsTread patternsAnti-skid inserts
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
A pneumatic tire has a tread portion including a tread rubber forming a ground contact surface, a belt layer, and an outer diameter from 350 to 600 mm, and is configured to be mounted on a tire rim having a rim width RW from 78% to 99% of a tire section width SW of the pneumatic tire. The ground contact surface is divided into a plurality of land regions including shoulder land regions by circumferential grooves provided in the tread portion. In an axial half of the pneumatic tire, the shoulder land region has an inner edge located axially inside an outer edge of the belt layer, and a distance LA between the inner edge and the outer edge is from 10% to 30% of a maximum belt width WA of the belt layer. A hardness Hs of the tread rubber satisfies Expression 1:
A pneumatic tire has a tread portion including a tread rubber forming a ground contact surface, a belt layer, and an outer diameter from 350 to 600 mm, and is configured to be mounted on a tire rim having a rim width RW from 78% to 99% of a tire section width SW of the pneumatic tire. The ground contact surface is divided into a plurality of land regions including shoulder land regions by circumferential grooves provided in the tread portion. In an axial half of the pneumatic tire, the shoulder land region has an inner edge located axially inside an outer edge of the belt layer, and a distance LA between the inner edge and the outer edge is from 10% to 30% of a maximum belt width WA of the belt layer. A hardness Hs of the tread rubber satisfies Expression 1:
Hs≤75−20×LA/SW (Expression 1).
Provided are a golf club head fitting device, etc., capable of easily specifying a golf club head suitable for each swing motion of a player. A golf club head fitting device 200 includes an acquisition unit 201 that acquires measurement data obtained by measuring a swing motion of a golf club by a player through use of a measurement instrument, a calculation unit 202 that calculates a swing index on the basis of measurement data, and a selection unit 203 that selects at least one golf club head suitable for the player from among a plurality of candidate golf club heads on the basis of the swing index.
WABWEVSATDRYSATDRYDRY, which is a loss tangent in a dry state at 30°C, is 1.05 or more. The purpose of the present invention is to improve grip performance under a condition in which a dry state and a wet state alternate.
C08L 101/14 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity the macromolecular compounds being water soluble or water swellable, e.g. aqueous gels
An object of the present disclosure is to provide a novel golf ball cover material from which a golf ball showing a high spin rate on short iron shots and a low spin rate on driver shots is obtained. The present disclosure provides a golf ball cover material having a loss elastic modulus (E″−40) in a range from 6.50×107 Pa to 22.0×107 Pa at a measuring temperature of −40° C., and a loss elastic modulus (E″−20) in a range from 3.50×107 Pa to 7.10×107 Pa at a measuring temperature of −20° C., when measured using a dynamic viscoelasticity measuring apparatus under following measuring conditions:
Measuring mode: tensile mode
Measuring temperature: −100° C. to 100° C.
Temperature rising rate: 4° C./minute
Oscillation frequency: 10 Hz
Measuring strain: 0.05%.
A tire can include a pair of beads, a carcass, a pair of sidewall layers, and a belt. One carcass ply constituting the carcass can include a ply body and a pair of turned-up portions. A radial height of each turned-up portion can be not greater than 17% of a cross-sectional height of the tire. An average thickness F of the sidewall layer in a zone can satisfy the following formula (1) represented using a constant B, a cross-sectional width SW of the tire, and a width BW of the belt, and the constant B can satisfy the following formula (2) represented using an aspect ratio RA of the tire:
A tire can include a pair of beads, a carcass, a pair of sidewall layers, and a belt. One carcass ply constituting the carcass can include a ply body and a pair of turned-up portions. A radial height of each turned-up portion can be not greater than 17% of a cross-sectional height of the tire. An average thickness F of the sidewall layer in a zone can satisfy the following formula (1) represented using a constant B, a cross-sectional width SW of the tire, and a width BW of the belt, and the constant B can satisfy the following formula (2) represented using an aspect ratio RA of the tire:
416×(BW/SW−B)2+4≤F≤416×(BW/SW−B)2+6, Formula (1):
A tire can include a pair of beads, a carcass, a pair of sidewall layers, and a belt. One carcass ply constituting the carcass can include a ply body and a pair of turned-up portions. A radial height of each turned-up portion can be not greater than 17% of a cross-sectional height of the tire. An average thickness F of the sidewall layer in a zone can satisfy the following formula (1) represented using a constant B, a cross-sectional width SW of the tire, and a width BW of the belt, and the constant B can satisfy the following formula (2) represented using an aspect ratio RA of the tire:
416×(BW/SW−B)2+4≤F≤416×(BW/SW−B)2+6, Formula (1):
and
A tire can include a pair of beads, a carcass, a pair of sidewall layers, and a belt. One carcass ply constituting the carcass can include a ply body and a pair of turned-up portions. A radial height of each turned-up portion can be not greater than 17% of a cross-sectional height of the tire. An average thickness F of the sidewall layer in a zone can satisfy the following formula (1) represented using a constant B, a cross-sectional width SW of the tire, and a width BW of the belt, and the constant B can satisfy the following formula (2) represented using an aspect ratio RA of the tire:
416×(BW/SW−B)2+4≤F≤416×(BW/SW−B)2+6, Formula (1):
and
B=0.84×(−0.49×RA/100+1.22) Formula (2):.
A tire 1 includes a pair of shoulder block rows 4, 4 and a plurality of crown blocks 5. The crown blocks 5 include a plurality of first crown blocks 7 and a plurality of second crown blocks 8 which are disposed such that a second crown block pair 9 having the two second crown blocks 8 disposed adjacent to each other in the tire axial direction repeatedly appears in the tire circumferential direction. Each first crown block 7 is disposed one by one between the second crown block pairs 9 adjacent to each other in the tire circumferential direction. The first crown block 7 has a laterally elongated tread surface 7a in which the maximum length L1 is less than the maximum width W1. The second crown block 8 has a longitudinally elongated tread surface 8a in which the maximum length L2 is greater than the maximum width W2.
A shaft having an entire length of L includes fiber reinforced resin layers including one or more straight layers, a bias layer, and hoop layers. The one or more straight layers include one or more full length straight layers each having a length of 0.7L or greater. The hoop layers include full length hoop layers each having a length of 0.7L or greater. The full length hoop layers consist only of one inner full length hoop layer and one outer full length hoop layer. At least one of the one or more full length straight layers is disposed inside the outer full length hoop layer. When thicknesses of the inner and outer full length hoop layers are denoted by T1 and T2, respectively, 1
A golf ball can include a core, a mid layer, and a cover. A hardness Hm of the mid layer can be larger than a hardness Hc of the cover. In a graph on which distances of and Shore C hardnesses at a central point of the core, six points between the central point and a surface of the core, and a point on the surface are plotted, a slope A1 of a straight line connecting the central point and a first point can be not less than 1.00. A maximum value Amax of absolute values of the following slopes A2 to A7 can be not greater than 0.90.
A2: a slope of a straight line connecting the first point and a second point.
A3: a slope of a straight line connecting the second point and a third point.
A4: a slope of a straight line connecting the third point and a fourth point.
A5: a slope of a straight line connecting the fourth point and a fifth point.
A6: a slope of a straight line connecting the fifth point and a sixth point.
A7: a slope of a straight line connecting the sixth point and the point on the surface.
A racket 2 includes a frame 4, a grip 6, a grommet 10, and a string 12. The frame 4 includes a head 14, a first throat 16a, a second throat 16b, and a shaft 18. A maximum value of a thickness of the frame 4 is less than 26.0 mm. The racket 2 has an in-plane stiffness index Gi of greater than or equal to 5000 and less than or equal to 8000. The in-plane stiffness index Gi is a product of a top pressure stiffness value Git (kgf/cm) and a side pressure stiffness value Gis (kgf/cm). The racket 2 has an out-of-plane stiffness index Go of greater than or equal to 45000 and less than or equal to 60000. The out-of-plane stiffness index Go is a product of a throat stiffness value Gos (kgf/cm) and a ball-hitting face stiffness value Goh (kgf/cm).
An object of the present disclosure is to provide a golf ball that has a small difference between a flight distance on driver shots by a golfer with a fast head speed and a flight distance on driver shots by a golfer with a slow head speed, and can reduce flight distance handicap. The present disclosure provides a golf ball comprising a spherical core, an intermediate layer, and an outermost cover having a plurality of dimples formed thereon, wherein the spherical core is formed from a rubber composition containing a base rubber, a co-crosslinking agent, and a crosslinking initiator, the base rubber contains a natural rubber, a total lower volume of the plurality of dimples is 365 mm3 or more, and an occupation ratio of a total area of the plurality of dimples in a surface area of a phantom sphere that is assumed to have no dimples on the outermost cover is 75% or more.
A tire that allows enhancement of running performance on a deep snow road surface is provided. A tire 1 includes a first shoulder block 3. The first shoulder block 3 includes a first tread surface 5 extending inward from a first tread end T1 in the tire axial direction, a first side surface 6 extending inward from the first tread end T1 in the tire radial direction, and a second tread surface 7 extending outward from the first side surface 6 in the tire axial direction. The second tread surface 7 extends at an angle θ of 10° or less relative to a contact line 5n extending in contact with the first tread surface 5 through the first tread end T1. At least one groove 8 is disposed in the second tread surface 7.
An object of the present disclosure is to provide a golf ball that can fly in a lowered maximum height on driver shots by a golfer with a fast head speed. The present disclosure provides a golf ball comprising a spherical core, an intermediate layer, and an outermost cover having a plurality of dimples formed thereon, wherein the spherical core is formed from a rubber composition containing a base rubber, a co-crosslinking agent, and a crosslinking initiator, the base rubber contains a natural rubber, the co-crosslinking agent contains methacrylic acid and/or a metal salt thereof, a total lower volume of the plurality of dimples is 365 mm3 or more, and an occupation ratio of a total area of the plurality of dimples in a surface area of a phantom sphere that is assumed to have no dimples on the outermost cover is 75% or more.
The present invention provides a rubber composition and a tire with which it is possible to improve wet grip performance. The present invention is a rubber composition containing a rubber component A and vulcanized rubber particles. Domains composed of the vulcanized rubber particles are present in a matrix composed of the rubber component A, the average diameter of the domains is 50 μm or more, and the following formulas are satisfied. Hardness of domains when dry (kgf/mm2)/hardness of matrix when dry (kgf/mm2) ≥ 1.1 Hardness of domains when wet by water (kgf/mm2)/hardness of matrix when wet by water (kgf/mm2) ≤ 0.98
The present invention provides: vulcanized rubber particles with which it is possible to continuously exhibit good wet grip performance; a rubber composition; and a tire. The present invention is vulcanized rubber particles containing a rubber component A, silica, and a polyacrylic acid resin, the rubber component A containing a diene rubber having a polar functional group.
C08L 33/00 - Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereofCompositions of derivatives of such polymers
A motorcycle tire can include a tread portion, sidewall portions, bead portions, and a carcass. The tread portion can include a tread reinforcing layer and a tread rubber. The tread reinforcing layer can include a belt layer and a band layer. A development width of the band layer can be smaller than that of the belt layer. The tread rubber can include a crown rubber and shoulder rubbers. A hardness at 100° C. of each shoulder rubber can be higher than a hardness at 100° C. of the crown rubber, a complex elastic modulus at 100° C. of each shoulder rubber can be higher than a complex elastic modulus at 100° C. of the crown rubber, and a 300% modulus at 100° C. of each shoulder rubber can be higher than a 300% modulus at 100° C. of the crown rubber.
B60C 9/18 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
A motorcycle tire comprises a tread portion having a first tread edge, a second tread edge and a ground contacting surface. The ground contacting surface comprises a first ground contacting surface from the tire equator to the first tread edge. When the first ground contacting surface is equally axially divided into a first, a second, a third, a fourth and a fifth zone in order from the tire equator to the first tread edge, a land ratio of the second zone is larger than a land ratio of the first zone and larger than a land ratio of the third zone.
A pneumatic tire can include a plurality of Helmholtz sound absorbers on a tire inner cavity surface. The plurality of Helmholtz sound absorbers can have a first resonance frequency as a maximum resonance frequency and a second resonance frequency as a minimum resonance frequency. A difference between the first resonance frequency and the second resonance frequency can be 10 to 90 Hz.
The present invention is directed to a pneumatic tire including: a tread portion; a pair of sidewall portions extending to an inner side in a tire radial direction from both respective ends in a tire axial direction of the tread portion; a pair of bead portions located on the inner side in the tire radial direction relative to the pair of respective sidewall portions; and a plurality of Helmholtz sound absorbers disposed on a tire inner cavity surface. The plurality of Helmholtz sound absorbers include first and second sound absorbers respectively having a first resonance frequency and a second resonance frequency different from the first resonance frequency. Each of the first and second sound absorbers is disposed on an inner side in the tire axial direction relative to at least one of either of the pair of sidewall portions and either of the pair of bead portions.
An object of the present disclosure is to provide a golf ball having good shot feeling on iron shots, having excellent controllability due to a short rolling distance, and being slightly affected by the wind due to a low maximum flying height. The present disclosure provides a golf ball 2 comprising a spherical core 4, an intermediate layer 6 and an outermost cover 8, wherein the spherical core 4 is formed from a rubber composition containing a natural rubber and methacrylic acid and/or a metal salt thereof, and a center hardness (H0) of the spherical core 4, hardnesses (H2.5, H5.0, H7.5, H10, H12.5, H15) at points having a radial distance of 2.5 mm, 5.0 mm, 7.5 mm, 10 mm, 12.5 mm and 15 mm from a center of the spherical core 4, and a surface hardness (Hs) of the spherical core 4 satisfy a relationship of H0
An object of the present disclosure is to provide a golf ball having good shot feeling, rolling in a short distance and having excellent controllability on approach shots. The present disclosure provides a golf ball 2 comprising a spherical core 4, an intermediate layer 6 and an outermost cover 8, wherein the spherical core 4 is formed from a rubber composition containing a natural rubber, a center hardness (H0) of the spherical core 4, hardnesses (H2.5, H5.0, H7.5, H10, H12.5, H15) at points having a radial distance of 2.5 mm, 5.0 mm, 7.5 mm, 10 mm, 12.5 mm and 15 mm from a center of the spherical core 4, and a surface hardness (Hs) of the spherical core 4 satisfy a relationship of H0
An iron-type golf club head comprises a face portion and a hosel portion which are integrally formed by forging or casting soft iron. The face portion has a face hardness hf (HV) which is defined by Vickers hardness at a depth of 4 mm from the hitting surface at a main impact point. The hosel portion has a reference hosel outer peripheral portion defining a hosel hardness hh (HV) which is an average value of Vickers hardness measured at positions around the hosel axis, and at a depth of 1 mm from the outer surface thereof. The hosel hardness hh is higher than the face hardness hf.
The present invention is a puncture repair kit 1 for repairing a puncture of an object. The puncture repair kit 1 includes: a container 5 in which a puncture repair liquid R is housed; a compressed air source 3 for supplying compressed air A; a mixing device 4 that is attached to the container 5, and generates a mixture of the puncture repair liquid R and the compressed air A; a first connection tool 12 that connects the compressed air source 3 and the mixing device 4; and a second connection tool 13 that connects the mixing device 4 and a valve of the punctured object. An emission angle θ for discharging the mixture, which is neither aerosolized nor foamed, from the valve to the inside of the object is 20° or more.
B29C 73/02 - Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass using liquid or paste-like material
The present invention provides a puncture repair kit 1 for repairing a puncture in an object. The puncture repair kit 1 comprises a vessel 5 which contains a puncture repair fluid R, a compressed-air source 3 for supplying compressed air A, a mixing device 4 for producing a mixture of the puncture repair fluid R and the compressed air A, the mixing device being affixed to the vessel 5, a first connector 12 which connects the compressed-air source 3 to the mixing device 4, and a second connector 13 which connects the mixing device to the valve of a punctured object. A discharge angle at which the mixture not in an aerosol state is ejected from the valve to the inside of the object is 20° or greater.
B29C 73/02 - Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass using liquid or paste-like material
