Provided is an ultraviolet shielding agent composition, in which an ultraviolet shielding agent (A) consisting of a layered double hydroxide, the layered double hydroxide having positively charged basic layers composed of divalent metal ions, trivalent metal ions and hydroxide ions, and a negatively charged intermediate layer disposed between two basic layers and containing organic acid ions and t-butyl methoxydibenzoylmethane, and at least one ultraviolet shielding ability-enhancing agent (B) selected from the group consisting of a polyhydric alcohol fatty acid ester type nonionic surfactant, a polyoxyethylene alkyl ether phosphate or a salt thereof, a silicone surfactant, a polyhydroxy fatty acid, a clay mineral, and silica are dispersed or dissolved in a liquid oil (C). Also provided is a cosmetic comprising the ultraviolet shielding agent composition as an oily phase component. This cosmetic can be efficiently produced by mixing the component (A), the component (B), and the component (C) to prepare an oily dispersion.
A61K 8/55 - Cosmétiques ou préparations similaires pour la toilette caractérisés par la composition contenant des composés organiques contenant du phosphore
A61K 8/894 - Polysiloxanes saturés, p. ex. diméthicone, phényl triméthicone, C24-C28 méthicone, stéaryl diméthicone modifiés par un groupe polyoxyalkylène, p. ex. cétyl diméthicone copolyol
A61Q 17/04 - Préparations topiques pour faire écran au soleil ou aux radiationsPréparations topiques pour bronzer
A61Q 19/00 - Préparations pour les soins de la peau
C07C 215/10 - Composés contenant des groupes amino et hydroxy liés au même squelette carboné ayant des groupes hydroxy et des groupes amino liés à des atomes de carbone acycliques du même squelette carboné le squelette carboné étant saturé et acyclique avec un groupe amino et au moins deux groupes hydroxy liés au squelette carboné
C07C 229/06 - Composés contenant des groupes amino et carboxyle liés au même squelette carboné ayant des groupes amino et carboxyle liés à des atomes de carbone acycliques du même squelette carboné le squelette carboné étant acyclique et saturé ayant un seul groupe amino et un seul groupe carboxyle liés au squelette carboné
The purpose of the present invention is to provide a heat shielding material capable of excellent reflection of infrared rays and excellent transmission of visible rays, infrared rays being causative of temperature increase. The present invention is a heat shielding material which contains, as an active component, high-aspect-ratio magnesium hydroxide plate crystals that have crystal widths of 1μm or more and crystal thicknesses of 0.2μm or less.
E04B 1/76 - Isolation thermique ou acoustique, absorption ou réflexion de la chaleur ou du sonAutres méthodes de construction procurant des conditions thermiques ou acoustiques favorables, p. ex. par accumulation de chaleur à l'intérieur des murs spécifiquement relatives à la chaleur uniquement
The purpose of the present invention is to provide a resin composition, in which the disadvantage of needle-like basic magnesium sulfate contained therein is overcome, and which has a good balance among mechanical strength, moldability/productivity and appearance of a molded product of the resin composition. The present invention is a resin composition comprising (i) 100 parts by weight of a resin (component (A)), (ii) plate-like magnesium hydroxide having a crystal thickness (y) of 0.2 μm or less and an aspect ratio of 20 to 100 (component (B)), and (iii) needle-like basic magnesium sulfate (component (C)), wherein the total content of the components (B) and (C) is 1 to 100 parts by weight relative to 100 parts by weight of the resin and the ratio of the weight of the component (B) to the weight of the component (C) (i.e., (component (B)):(component (C))), is (0.1 to 0.9):(0.9 to 0.1).
The aim of the present invention lies in providing a thermal conduction enhancer which can impart a high level of thermal conduction to a resin. The thermal conduction enhancer according to the present invention comprises, as the effective component, magnesium hydroxide particles having a thickness of 10 nm to 0.2 µm and an aspect ratio (major axis/thickness) measured by SEM of at least 10.
The purpose of the present invention is to provide magnesium hydroxide with a high aspect ratio, a manufacturing method therefor, and a resin composition containing said magnesium hydroxide. Said manufacturing method, whereby magnesium hydroxide with a major axis (width) of at least 0.5 µm and an aspect ratio of at least 10 is manufactured, includes the following steps: a step (A) wherein an alkali is added to and coprecipitated with a mixed aqueous solution, which consists of a water-soluble magnesium salt and a monovalent organic acid or salt thereof, or a step (B) wherein an aqueous solution of an alkali is added to and coprecipitated with an aqueous solution of a water-soluble magnesium salt and then a monovalent organic acid or salt thereof is added; and (C) a step wherein the obtained slurry is hydrothermally treated at at least 100°C.
C08L 23/00 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures aliphatiques non saturés ne possédant qu'une seule liaison double carbone-carboneCompositions contenant des dérivés de tels polymères
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