Chemstone, Inc.

United States of America

Back to Profile

1-24 of 24 for Chemstone, Inc. Sort by
Query
Aggregations
IP Type
        Patent 20
        Trademark 4
Jurisdiction
        United States 20
        Europe 2
        World 1
        Canada 1
Date
2025 (YTD) 1
2024 1
2023 3
2022 5
2021 3
See more
IPC Class
D21H 21/16 - Sizing or water-repelling agents 13
D21H 17/14 - Carboxylic acidsDerivatives thereof 5
D21H 17/00 - Non-fibrous material added to the pulp, characterised by its constitutionPaper-impregnating material characterised by its constitution 4
C09D 191/00 - Coating compositions based on oils, fats or waxesCoating compositions based on derivatives thereof 3
D21H 11/18 - Highly hydrated, swollen or fibrillatable fibres 3
See more
Status
Pending 9
Registered / In Force 15

1.

Method of Modifying Polymer Barrier Films

      
Application Number 18914783
Status Pending
Filing Date 2024-10-14
First Publication Date 2025-01-30
Owner ChemStone, Inc. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert
  • Mikail, Samuel

Abstract

The present disclosure describes a method to modify dried polymer films using printed crosslinking agents, including that the crosslinked polymer resulting from the method exhibits greater insolubility compared to crosslinked polymers made where the crosslinking agent and the polymer are combined and applied as a homogenous solution. Articles of manufacture generated by such a method are also disclosed.

IPC Classes  ?

  • D21H 19/82 - Paper comprising more than one coating superposed
  • D21H 19/20 - Coatings without pigments applied in a form other than the aqueous solution defined in group comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D21H 21/16 - Sizing or water-repelling agents

2.

Polyol Fatty Acid Ester Carrier Compositions

      
Application Number 18668757
Status Pending
Filing Date 2024-05-20
First Publication Date 2024-09-12
Owner ChemStone, Inc. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert
  • Mikail, Samuel

Abstract

The present disclosure describes methods of treating fibrous cellulosic materials with sucrose fatty acid ester containing particles (carrier systems) that allow for modifications of surfaces, including making such surfaces water resistance and/or oil/grease resistance. The methods as disclosed provide combining at least one saccharide fatty acid esters (SFAE) with a polymer (e.g., latexes) to form micellular particles and applying such particles to substrates including fibrous cellulose-based materials (e.g., pulp) to form, inter alia, molded products. Compositions comprising combinations of SFAE, a latex and optionally a mineral or other additives are also disclosed.

IPC Classes  ?

  • D21J 7/00 - Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould
  • D21H 17/00 - Non-fibrous material added to the pulp, characterised by its constitutionPaper-impregnating material characterised by its constitution
  • D21H 17/14 - Carboxylic acidsDerivatives thereof
  • D21H 17/28 - Starch
  • D21H 17/33 - Synthetic macromolecular compounds
  • D21H 17/68 - Water-insoluble compounds, e.g. fillers or pigments siliceous, e.g. clays
  • D21H 21/16 - Sizing or water-repelling agents
  • D21J 1/06 - Drying

3.

ENHANCED CELLULOSE NANOFIBRILS (CNF)

      
Application Number 18035393
Status Pending
Filing Date 2021-11-05
First Publication Date 2023-12-21
Owner CHEMSTONE, INC. (USA)
Inventor
  • Bilodeau, Michael Albert
  • Spender, Jonathan

Abstract

An enhanced cellulose nanofibrils (CNF) (or enhanced CNF binder), methods of making the enhanced CNF binder, methods of making wet-laid, dry-laid, or molded articles with the enhanced CNF binder by incorporating the enhanced CNF with the furnish in the wet-end of a paper-making process, methods of coating cellulose-based materials, intermediate formed fiber articles, and/or molded articles with the enhanced CNF binder, and cellulose-based articles obtained by all of these methods, wherein the enhanced CNF includes a saccharide fatty acid ester-, glyceride-, fatty acid salt-, natural wax- and/or cellulose crosslinker-(SGF) blend bound to the CNF.

IPC Classes  ?

  • D21H 11/18 - Highly hydrated, swollen or fibrillatable fibres
  • D21H 11/04 - Kraft or sulfate pulp
  • D21H 21/16 - Sizing or water-repelling agents
  • D21H 19/12 - Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
  • D21H 23/50 - Spraying or projecting
  • D21J 5/00 - Manufacture of hollow articles by transferring sheets, produced from fibres suspensions or papier-mâché by suction on wire-net moulds, to couch moulds
  • D21J 1/08 - Impregnated or coated fibreboard

4.

WATER INSOLUBLE, HIGH MELTING POINT SACCHARIDE FATTY ACID ESTERS (SFAE)

      
Application Number 17990151
Status Pending
Filing Date 2022-11-18
First Publication Date 2023-08-24
Owner CHEMSTONE, INC. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert
  • Mikail, Samuel

Abstract

Methods of treating materials, such as cellulose-based materials, to provide barrier properties like water resistance and lipid resistance (OGR), separately or in combination, and particularly at high temperatures, by using bio-based coatings and/or compositions containing a water insoluble, high melting point saccharide fatty acid ester and products obtained by the methods.

IPC Classes  ?

5.

WATER INSOLUBLE, HIGH MELTING POINT SACCHARIDE FATTY ACID ESTERS (SFAE)

      
Document Number 03238468
Status Pending
Filing Date 2022-11-18
Open to Public Date 2023-05-25
Owner CHEMSTONE, INC. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert
  • Mikail, Samuel

Abstract

Methods of treating materials, such as cellulose-based materials, to provide barrier properties like water resistance and lipid resistance (OGR), separately or in combination, and particularly at high temperatures, by using bio-based coatings and/or compositions containing a water insoluble, high melting point saccharide fatty acid ester and products obtained by the methods.

IPC Classes  ?

6.

HEMICELLULOSE-CONTAINING COATINGS

      
Application Number 17631199
Status Pending
Filing Date 2020-07-29
First Publication Date 2022-09-01
Owner CHEMSTONE, INC. (USA)
Inventor
  • Bilodeau, Michael Albert
  • Mikail, Samuel

Abstract

The present invention describes methods of treating cellulosic materials with a composition comprising hemicellulose and/or lignin and sucrose fatty acid esters to modify barrier functions of such materials. The methods as disclosed use hemicellulose or lignin combined with saccharide fatty acid esters to form films on cellulosic materials, including that the disclosure provides products made by such methods. The materials thus treated exhibit more effective barrier functions, and mechanical properties, and may be used in any application where such features are desired.

IPC Classes  ?

  • D21H 19/12 - Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
  • C09D 101/10 - Esters of organic acids
  • C09D 197/00 - Coating compositions based on lignin-containing materials
  • D21H 21/16 - Sizing or water-repelling agents
  • D21H 27/02 - Patterned paper
  • D21J 1/08 - Impregnated or coated fibreboard

7.

SACCHARIDE FATTY ACID ESTER LATEX BARRIER COATING COMPOSITIONS

      
Application Number 17631171
Status Pending
Filing Date 2020-07-29
First Publication Date 2022-08-25
Owner CHEMSTONE, INC. (USA)
Inventor
  • Bilodeau, Michael Albert
  • Spender, Jonathan

Abstract

The present disclosure describes methods of treating cellulosic materials with barrier coating compositions that allow for modifications of surfaces, including making such surfaces exhibit barrier functions such as oil and grease resistance, water resistance and the like. The methods as disclosed provide combining at least one saccharide fatty acid ester (SFAE) with polymers and applying such combinations on substrates including cellulose-based materials. Compositions comprising combinations of SFAE and polymers are also disclosed, including the use of such compositions to reduce blocking effects of said polymers without affecting the barrier performance or folding of articles of manufacture coated with said compositions. In addition, blocking ratings data for SFAE-polymer compositions may be used to identify conditions under which adhesive properties may be exploited to produce compositions that allow for effective heat sealing of articles of manufacture.

IPC Classes  ?

  • D21H 17/06 - AlcoholsPhenolsEthersAldehydesKetonesAcetalsKetals
  • D21H 17/37 - Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
  • D21H 21/16 - Sizing or water-repelling agents
  • D21H 19/56 - Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds

8.

Method of modifying polymer barrier films

      
Application Number 17604310
Grant Number 12116730
Status In Force
Filing Date 2020-04-15
First Publication Date 2022-06-30
Grant Date 2024-10-15
Owner ChemStone, Inc. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert
  • Mikail, Samuel

Abstract

The present disclosure describes a method to modify dried polymer films using printed crosslinking agents, including that the crosslinked polymer resulting from the method exhibits greater insolubility compared to crosslinked polymers made where the crosslinking agent and the polymer are combined and applied as a homogenous solution. Articles of manufacture generated by such a method are also disclosed.

IPC Classes  ?

  • D21H 19/82 - Paper comprising more than one coating superposed
  • D21H 19/20 - Coatings without pigments applied in a form other than the aqueous solution defined in group comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D21H 21/16 - Sizing or water-repelling agents

9.

Polyol fatty acid ester carrier compositions

      
Application Number 17442764
Grant Number 11987935
Status In Force
Filing Date 2020-01-24
First Publication Date 2022-06-16
Grant Date 2024-05-21
Owner ChemStone, Inc. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert
  • Mikail, Samuel

Abstract

The present disclosure describes methods of treating fibrous cellulosic materials with sucrose fatty acid ester containing particles (carrier systems) that allow for modifications of surfaces, including making such surfaces water resistance and/or oil/grease resistance. The methods as disclosed provide combining at least one saccharide fatty acid esters (SFAE) with a polymer (e.g., latexes) to form micellular particles and applying such particles to substrates including fibrous cellulose-based materials (e.g., pulp) to form, inter alia, molded products. Compositions comprising combinations of SFAE, a latex and optionally a mineral or other additives are also disclosed.

IPC Classes  ?

  • D21H 17/14 - Carboxylic acidsDerivatives thereof
  • D21H 17/00 - Non-fibrous material added to the pulp, characterised by its constitutionPaper-impregnating material characterised by its constitution
  • D21H 17/28 - Starch
  • D21H 17/33 - Synthetic macromolecular compounds
  • D21H 17/68 - Water-insoluble compounds, e.g. fillers or pigments siliceous, e.g. clays
  • D21H 21/16 - Sizing or water-repelling agents
  • D21J 1/06 - Drying
  • D21J 7/00 - Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould

10.

NOVEL AQUEOUS ADHESIVES USING SACCHARIDE FATTY ACID ESTERS

      
Application Number 17295309
Status Pending
Filing Date 2019-11-20
First Publication Date 2022-01-13
Owner CHEMSTONE, INC. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert
  • Mikail, Samuel

Abstract

The present disclosure describes aqueous adhesives comprising, inter alia, adhesives and saccharide fatty acid esters, particularly unsaturated fatty acid esters (uSFAE), including aqueous adhesive compositions containing such a combination and where such aqueous adhesive compositions show improved water resistance compared to adhesives which do not contain said uSFAE. Articles of manufacture comprising said aqueous adhesive compositions are also described.

IPC Classes  ?

  • C09J 11/06 - Non-macromolecular additives organic
  • C09J 11/04 - Non-macromolecular additives inorganic
  • C09J 109/08 - Latex
  • B32B 1/08 - Tubular products
  • B32B 29/00 - Layered products essentially comprising paper or cardboard
  • B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
  • B32B 29/08 - Corrugated paper or cardboard
  • B27N 3/00 - Manufacture of substantially flat articles, e.g. boards, from particles or fibres

11.

Dual surfactant digester additive composition and a method for enhancing the pulping of wood chips using the same

      
Application Number 17399099
Grant Number 11970816
Status In Force
Filing Date 2021-08-11
First Publication Date 2021-12-02
Grant Date 2024-04-30
Owner ChemStone, Inc. (USA)
Inventor
  • Blackstone, Michael M.
  • Spizzirri, Peter

Abstract

In general, the present invention is directed to a method of cooking wood in a cooking liquor medium. The method comprises a step of providing wood to a treatment vessel and contacting the wood with a digester additive composition. The composition comprises a first surfactant comprising an anionic surfactant, a derivative thereof, a salt thereof, or any combination thereof and a second surfactant comprising a polyoxyalkylene glycol or a derivative thereof. Additionally, according to another embodiment, the present invention is directed to a digester additive composition comprising a first surfactant comprising an anionic surfactant, a derivative thereof, a salt thereof, or any combination thereof and a second surfactant comprising a polyoxyalkylene glycol or a derivative thereof.

IPC Classes  ?

  • D21C 3/06 - Pulping cellulose-containing materials with acids, acid salts, or acid anhydrides sulfur dioxidePulping cellulose-containing materials with acids, acid salts, or acid anhydrides sulfurous acidPulping cellulose-containing materials with acids, acid salts, or acid anhydrides bisulfites
  • C07C 309/86 - Halides of sulfonic acids having halosulfonyl groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
  • C08L 71/08 - Polyethers derived from hydroxy compounds or from their metallic derivatives
  • D21C 3/20 - Pulping cellulose-containing materials with organic solvents
  • D21C 3/22 - Other features of pulping processes
  • D21C 7/10 - Heating devices
  • D21H 21/24 - Surfactants

12.

METHODS FOR BIOBASED DERIVATIZATION OF CELLULOSIC AND SYNTHETIC MATERIALS AND ARTICLES OBTAINED THEREFROM

      
Application Number 17314826
Status Pending
Filing Date 2021-05-07
First Publication Date 2021-11-11
Owner CHEMSTONE, INC. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert

Abstract

The present disclosure relates generally to methods of treating cellulosic or synthetic materials to provide new and/or improved properties, such as water resistance and oil/grease resistance (also referred to as lipophobic and hydrophobic barrier properties), separately or in combination, by using bio-based coatings and/or compositions containing blends of glycerides and/or fatty acid salts, and products obtained by the methods.

IPC Classes  ?

13.

Dual surfactant digester additive composition and a method for enhancing the pulping of wood chips using the same

      
Application Number 15827137
Grant Number 11091875
Status In Force
Filing Date 2017-11-30
First Publication Date 2021-08-17
Grant Date 2021-08-17
Owner ChemStone, Inc. (USA)
Inventor
  • Blackstone, Michael M.
  • Spizzirri, Peter

Abstract

In general, the present invention is directed to a method of cooking wood in a cooking liquor medium. The method comprises a step of providing wood to a treatment vessel and contacting the wood with a digester additive composition. The composition comprises a first surfactant comprising an anionic surfactant, a derivative thereof, a salt thereof, or any combination thereof and a second surfactant comprising a polyoxyalkylene glycol or a derivative thereof. Additionally, according to another embodiment, the present invention is directed to a digester additive composition comprising a first surfactant comprising an anionic surfactant, a derivative thereof, a salt thereof, or any combination thereof and a second surfactant comprising a polyoxyalkylene glycol or a derivative thereof.

IPC Classes  ?

  • D21C 7/10 - Heating devices
  • D21C 3/22 - Other features of pulping processes
  • D21C 3/20 - Pulping cellulose-containing materials with organic solvents
  • C07C 309/86 - Halides of sulfonic acids having halosulfonyl groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
  • D21H 21/24 - Surfactants
  • C08L 71/08 - Polyethers derived from hydroxy compounds or from their metallic derivatives
  • D21C 3/06 - Pulping cellulose-containing materials with acids, acid salts, or acid anhydrides sulfur dioxidePulping cellulose-containing materials with acids, acid salts, or acid anhydrides sulfurous acidPulping cellulose-containing materials with acids, acid salts, or acid anhydrides bisulfites

14.

Integrated circuit package assembly

      
Application Number 16733341
Grant Number 11171120
Status In Force
Filing Date 2020-01-03
First Publication Date 2020-05-07
Grant Date 2021-11-09
Owner CHEMSTONE, INC. (USA)
Inventor Chen, Hsien-Wei

Abstract

An integrated circuit package assembly includes a first integrated circuit package and a second integrated circuit package. The first integrated circuit package includes a first integrated circuit die mounted on a first substrate. The second integrated circuit package includes a second integrated circuit die mounted on a second substrate. The second integrated circuit package is disposed under the first integrated circuit package. Solder bumps are disposed between the first integrated circuit package and the second integrated circuit package and provide electrical signal connections between the first integrated circuit die and the second integrated circuit die. A buffer layer is disposed between the first substrate and the second integrated circuit die to facilitate thermal conduction between the first integrated circuit package and the second integrated circuit package.

IPC Classes  ?

  • H01L 23/00 - Details of semiconductor or other solid state devices
  • H01L 25/10 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices having separate containers
  • H01L 25/065 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group

15.

Methods for biobased derivatization of cellulosic surfaces

      
Application Number 16733641
Grant Number 11098134
Status In Force
Filing Date 2020-01-03
First Publication Date 2020-05-07
Grant Date 2021-08-24
Owner CHEMSTONE, INC. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert
  • Basham, Daryl Aubrey
  • Basi, Nirmal Singh

Abstract

The present disclosure describes tunable methods of treating cellulosic materials with a composition that provides increased hydrophobicity and/or lipophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for binding of saccharide fatty acid esters on cellulosic materials, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, lipophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired.

IPC Classes  ?

  • D21H 17/00 - Non-fibrous material added to the pulp, characterised by its constitutionPaper-impregnating material characterised by its constitution
  • D21H 17/14 - Carboxylic acidsDerivatives thereof
  • D21H 17/24 - Polysaccharides
  • C09D 191/00 - Coating compositions based on oils, fats or waxesCoating compositions based on derivatives thereof
  • D21H 11/18 - Highly hydrated, swollen or fibrillatable fibres
  • D21H 21/16 - Sizing or water-repelling agents
  • D21H 17/25 - Cellulose
  • C08B 17/02 - Apparatus for esterification or etherification of cellulose for making organic esters of cellulose
  • C08B 3/20 - Esterification with maintenance of the fibrous structure of the cellulose
  • C08B 3/12 - Preparation of cellulose esters of organic acids of polybasic organic acids
  • C08L 91/00 - Compositions of oils, fats or waxesCompositions of derivatives thereof
  • C09D 101/14 - Mixed esters, e.g. cellulose acetate-butyrate
  • C11C 3/04 - Fats, oils or fatty acids obtained by chemical modification of fats, oils or fatty acids, e.g. by ozonolysis by esterification of fats or fatty oils

16.

Biobased barrier coatings comprising polyol/saccharide fatty acid ester blends

      
Application Number 16456499
Grant Number 11085152
Status In Force
Filing Date 2019-06-28
First Publication Date 2020-03-26
Grant Date 2021-08-10
Owner CHEMSTONE, INC. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert
  • Mikail, Samuel

Abstract

The present invention describes tunable methods of treating cellulosic materials with a barrier coating comprising at least two polyol and/or saccharide fatty acid ester that provides increased water, oil and grease resistance to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for adhering of the barrier coating on articles including articles comprising cellulosic materials and articles made by such methods. The materials thus treated display higher hydrophobicity and lipophobicity and may be used in any application where such features are desired.

IPC Classes  ?

  • D21H 21/16 - Sizing or water-repelling agents
  • D21H 19/12 - Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
  • D21H 19/46 - Non-macromolecular organic compounds
  • D21H 19/52 - CelluloseDerivatives thereof
  • D21H 19/54 - Starch
  • D21H 19/40 - Coatings with pigments characterised by the pigments siliceous, e.g. clays
  • D21H 19/38 - Coatings with pigments characterised by the pigments

17.

Biobased carrier coatings

      
Application Number 16568953
Grant Number 11345831
Status In Force
Filing Date 2019-09-12
First Publication Date 2020-01-02
Grant Date 2022-05-31
Owner CHEMSTONE, INC. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert
  • Mikail, Samuel

Abstract

The present invention describes tunable methods of treating cellulosic materials with a barrier coating comprising a prolamine and at least one polyol fatty acid ester that provides increased oil and/or grease resistance to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for adhering of the barrier coating on articles including articles comprising cellulosic materials and articles made by such methods. The materials thus treated display higher lipophobicity and may be used in any application where such features are desired.

IPC Classes  ?

  • C09D 189/00 - Coating compositions based on proteinsCoating compositions based on derivatives thereof
  • C09D 5/00 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects producedFilling pastes
  • B65D 65/46 - Applications of disintegrable, dissolvable or edible materials
  • B65D 3/04 - Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape essentially cylindrical
  • B65D 65/42 - Applications of coated or impregnated materials
  • C09D 191/00 - Coating compositions based on oils, fats or waxesCoating compositions based on derivatives thereof

18.

Saccharide fatty acid ester inorganic particle combinations

      
Application Number 16456433
Grant Number 11530517
Status In Force
Filing Date 2019-06-28
First Publication Date 2019-10-24
Grant Date 2022-12-20
Owner CHEMSTONE, INC. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert
  • Mikail, Samuel

Abstract

The present disclosure describes methods of treating cellulosic materials with compositions that allow greater retention of inorganic particles on cellulosic substrates. The methods as disclosed provide combining saccharide fatty acid esters (SFAE) with such inorganic particles and applying such combinations on cellulosic materials to eliminate or reduce the use of retention aids or binders for filler in the paper making process. Compositions comprising such combinations of SFAE and inorganic particles are also disclosed.

IPC Classes  ?

19.

Methods for biobased derivatization of cellulosic surfaces

      
Application Number 15693186
Grant Number 10730959
Status In Force
Filing Date 2017-08-31
First Publication Date 2018-03-08
Grant Date 2020-08-04
Owner CHEMSTONE, INC. (USA)
Inventor
  • Spender, Jonathan
  • Bilodeau, Michael Albert
  • Basham, Daryl Aubrey
  • Basi, Nirmal Singh

Abstract

The present invention describes tunable methods of treating cellulosic materials with a composition that provides increased hydrophobicity and/or lipophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for binding of saccharide fatty acid esters on cellulosic materials, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, lipophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired.

IPC Classes  ?

  • D21H 17/00 - Non-fibrous material added to the pulp, characterised by its constitutionPaper-impregnating material characterised by its constitution
  • D21H 17/14 - Carboxylic acidsDerivatives thereof
  • D21H 17/24 - Polysaccharides
  • D21H 11/18 - Highly hydrated, swollen or fibrillatable fibres
  • D21H 21/16 - Sizing or water-repelling agents
  • D21H 17/25 - Cellulose
  • C08B 17/02 - Apparatus for esterification or etherification of cellulose for making organic esters of cellulose
  • C08B 3/20 - Esterification with maintenance of the fibrous structure of the cellulose
  • C08B 3/12 - Preparation of cellulose esters of organic acids of polybasic organic acids
  • C09D 191/00 - Coating compositions based on oils, fats or waxesCoating compositions based on derivatives thereof
  • C08L 91/00 - Compositions of oils, fats or waxesCompositions of derivatives thereof
  • C09D 101/14 - Mixed esters, e.g. cellulose acetate-butyrate
  • C11C 3/04 - Fats, oils or fatty acids obtained by chemical modification of fats, oils or fatty acids, e.g. by ozonolysis by esterification of fats or fatty oils

20.

METHODS TO REDUCE METALS CONTENT OF BLEACHED PULP WHILE REDUCING BLEACHING COST IN A CHEMICAL PULPING PROCESS

      
Application Number US2011025845
Publication Number 2011/126613
Status In Force
Filing Date 2011-02-23
Publication Date 2011-10-13
Owner CHEMSTONE, INC. (USA)
Inventor Blackstone, Michael

Abstract

In accordance with certain embodiments of the present disclosure, a method of decreasing the amount of oxidizer required by a pulping or papermaking process is provided. The method comprises adding to a process stream or solution of the pulping or papermaking process an effective amount of urea hydrochloride to reduce the amount of oxidizer required by the pulping or papermaking process.

IPC Classes  ?

  • D21C 3/04 - Pulping cellulose-containing materials with acids, acid salts, or acid anhydrides
  • D21C 3/20 - Pulping cellulose-containing materials with organic solvents
  • D06M 13/432 - Urea, thiourea or derivatives thereof, e.g. biuretsUrea-inclusion compoundsDicyanamidesGuanidines, e.g. dicyandiamides

21.

CHEMSTONE

      
Application Number 002567337
Status Registered
Filing Date 2002-02-07
Registration Date 2003-04-04
Owner Chemstone, Inc. (USA)
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

Chemical additives used in paper making processes, namely additives for use during the production of wood palp.

22.

OAE

      
Application Number 002566743
Status Registered
Filing Date 2002-02-06
Registration Date 2003-04-15
Owner Chemstone, Inc. (USA)
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

Chemical additives for use in paper making processes, namely additives for use during the production of wood pulp.

23.

CHEMSTONE

      
Serial Number 76331472
Status Registered
Filing Date 2001-10-30
Registration Date 2002-08-06
Owner Chemstone, Inc. ()
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

chemical additives used in paper making processes, namely, additives for use during the production of wood pulp

24.

OAE

      
Serial Number 75278027
Status Registered
Filing Date 1997-04-21
Registration Date 1998-04-14
Owner Chemstone, Inc. ()
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

chemical additives for use in paper making processes, namely, additives for use during the production of wood pulp