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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 4200. Отображено 100.
16-05-2013 дата публикации

Oxygen-absorbing resin composition and method for manufacturing packaging body using the same

Номер: US20130123380A1
Автор: Emiko Yokose, Kimitaka Nakao, Makoto Sumitani
Принадлежит: Mitsubishi Gas Chemical Co Inc

The present invention provides an oxygen-absorbing resin composition that allows the miniaturization of an ultraviolet irradiation apparatus for initiating oxygen absorption, and rapidly initiates oxygen absorption by irradiation of an ultraviolet ray having a particular wavelength. The present invention is an oxygen-absorbing resin composition comprising an initiator, a transition metal catalyst, and an oxidizable resin, wherein the oxygen-absorbing resin composition initiates oxygen absorption by irradiation of an ultraviolet ray having a peak wavelength within the range of 300 to 400 nm.

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Номер записи: 1
15-08-2013 дата публикации

Process for producing vulcanized rubber composition

Номер: US20130210978A1
Автор: Hironobu Iyama, Kenichi Takeuchi, Yasuo Uekita
Принадлежит: Sumitomo Chemical Co Ltd

A process for producing a vulcanized rubber composition that includes S-(3-aminopropyl)thiosulfuric acid, a rubber component, a filler, a sulfur component, and a vulcanization accelerator, the process comprising the following Steps (A), (B) and (C); (A): a step of kneading S-(3-aminopropyl)thiosulfuric acid having a median diameter (50% D) of 10 μm to 100 μm, a rubber component and a filler, (B): a step of kneading the kneaded mixture obtained in Step (A), a sulfur component and a vulcanization accelerator, and (C): a step of subjecting the kneaded mixture obtained in Step (B) to thermal treatment.

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Номер записи: 2
03-10-2013 дата публикации

Polymer compound comprising dye and curable resin composition comprising same

Номер: US20130261213A1
Автор: Janghyun Ryu, Jiyoung Park, Sunhwa KIM
Принадлежит: LG Chem Ltd

The present invention relates to a polymer compound including a dye, and a curable resin composition including the same. The polymer compound including the dye according to the present invention may exhibit characteristics such as excellent heat resistance, solubility, coating uniformity, chemical resistance and the like by introducing a single molecule type dye into a side chain of a polymer binder to be modified into a polymer form and applying the modified polymer to a curable composition.

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Номер записи: 3
20-03-2014 дата публикации

Anti-vibration rubber composition and anti-vibration rubber

Номер: US20140080979A1
Автор: Masaaki Yamamoto
Принадлежит: Bridgestone Corp

The purpose of the present invention is to provide: an anti-vibration rubber composition which enables the production of a hardened rubber article having excellent heat resistance, compression set, low dynamic magnification, tensile properties (elongation, strength), low-temperature properties and workability (scorch resistance); and an anti-vibration rubber which is produced by hardening the rubber composition. The anti-vibration rubber composition is characterized by comprising a rubber component mainly composed of a diene rubber, a bismaleimide compound as a vulcanizing agent, and N-phenyl-N-(trichloromethylthio)benzenesulfoneamide.

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Номер записи: 4
27-03-2014 дата публикации

Crosslinked organic porous particles

Номер: US20140087188A1
Автор: Mridula Nair
Принадлежит: Individual

Crosslinked organic porous particles are non-swellable in propyl acetate and have a crosslinked organic solid phase and discrete pores dispersed within the crosslinked organic solid phase, which discrete pores are isolated from each other. The discrete pores have an average size greater than or equal to 0.1 μm and the crosslinked organic porous particles have a mode particle size of at least 3 μm and up to and including 100 μm. The discrete pores can contain a marker material.

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Номер записи: 5
10-04-2014 дата публикации

Atmospheric plasma treatment of reinforcement cords and use in rubber articles

Номер: US20140099460A1
Автор: Dinesh Chandra, Frederic Gerard Auguste Siffer, James Gregory Gillick, Lauren Elizabeth Brace, Ralf Mruk, William Paul Francik
Принадлежит: Goodyear Tire and Rubber Co

The present invention is directed to a method of making a cord-reinforced rubber article, comprising the steps of (A) atomizing a mixture of a halogenated hydrocarbon, a carrier gas, and at least one member of the group consisting of hydrocarbon sulfides and polymerizable monomers, to form an atomized mixture; (B) generating an atmospheric pressure plasma from the atomized mixture; (C) exposing a reinforcement cord to the atmospheric pressure plasma to produce a treated reinforcement cord; and (D) contacting the treated reinforcement cord with a rubber composition comprising a diene based elastomer and at least one member of the group consisting of methylene donors and methylene acceptors.

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Номер записи: 6
06-01-2022 дата публикации

Two-Component, Water-Based Lamination Adhesive and Use of the Same to Bond Substrates and Foams

Номер: US20220002600A1
Автор: Abhijit Hirekerur, Emilie Smith-Heberer, Girdhari KUMAR, Sandeep Kothawade, Umesh Harkal
Принадлежит: Henkel AG and Co KGaA

A water comprising, two component polyurethane dispersion adhesive comprising an anionic polyester polyurethane resin and a solvent-free liquid aliphatic polyisocyanate cross-linker. The dispersion can be reactivated one or more times for edge bonding a flexible sheet material onto a substrate having a main surface, a peripheral surface and an edge connecting the main surface and the peripheral surface.

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Номер записи: 7
07-01-2016 дата публикации

Acrylonitrile butadiene rubber composition, acrylonitrile butadiene rubber molded article, and method for producing same

Номер: US20160002447A1
Автор: Haruhisa Masuda, Tomihiko Yanagiguchi
Принадлежит: Daikin Industries Ltd

An object of the present invention is to provide an acrylonitrile-butadiene rubber composition that can provide an acrylonitrile-butadiene rubber molded article having excellent properties of non-stickiness, oil resistance, heat resistance, and low-friction properties. The acrylonitrile-butadiene rubber composition of the present invention includes: an acrylonitrile-butadiene rubber (A); and a fluororesin (B), the fluororesin (B) being a perhalopolymer, the composition formed from a co-coagulated composition obtainable by co-coagulating the acrylonitrile-butadiene rubber (A) and the fluororesin (B).

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Номер записи: 8
05-01-2017 дата публикации

THERMALLY EXPANDABLE COMPOSITIONS

Номер: US20170002164A1
Автор: Kohlstrung Rainer, Rappmann Klaus
Принадлежит:

The present application relates to a thermally expandable composition containing an endothermic chemical blowing agent, to shaped bodies containing said composition and to a method for sealing and filling cavities in components, for strengthening or reinforcing components, in particular hollow components, and for bonding movable components using shaped bodies of this type. 1. A thermally expandable composition containing at least one endothermic chemical blowing agent , at least one reactive binder and at least one of a curing agent and an accelerator.2. The thermally expandable composition according to claim 1 , wherein the at least one endothermic chemical blowing agent is selected from bicarbonates claim 1 , solid polycarboxylic acids claim 1 , solid polycarboxylic acid salts and mixtures thereof; and the at least one reactive binder is selected from the group consisting of epoxies claim 1 , rubbers claim 1 , peroxide-crosslinkable polymers and combinations thereof.3. The thermally expandable composition according to claim 2 , wherein the endothermic chemical blowing agent contains a bicarbonate of formula XHCO claim 2 , wherein X is a cation.4. The thermally expandable composition according to claim 3 , wherein X is selected from Na claim 3 , K claim 3 , NH claim 3 , ½ Zn claim 3 , ½ Mg claim 3 , ½ Ca and mixtures thereof.5. The thermally expandable composition according to claim 2 , wherein the endothermic chemical blowing agent contains a mixture of 2 or more bicarbonates.6. The thermally expandable composition according to claim 2 , wherein the solid polycarboxylic acids are selected from organic di- claim 2 , tri- claim 2 , tetra- acids and combinations thereof.7. The thermally expandable composition according to claim 2 , wherein the solid polycarboxylic acids comprise hydroxyl-functionalized and/or unsaturated di- claim 2 , tri- claim 2 , tetra- or polycarboxylic acids.8. The thermally expandable composition according to claim 2 , wherein the endothermic ...

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Номер записи: 9
04-01-2018 дата публикации

METHOD FOR PRODUCING BROMINATED AND HALOHYDRATED POLYMERS

Номер: US20180002455A1
Автор: Hull, JR. John W., Kram Shari, Porter Michal Elizabeth, Stobby William G.
Принадлежит: Dow Global Technologies LLC

Conjugated diene polymers such as a styrene-butadiene copolymer are sequentially brominated by reaction with a quaternary ammonium tribromide or quaternary phosphonium tribromide and halohydrated by reaction with an N-haloimide compound. This produces a brominated and halohydrated polymer with very good thermal stability. The product is useful as a flame retardant in a variety of polymer systems. 1. A process for preparing a brominated and halohydrated polymer of at least one conjugated diene , comprising (a) reacting a starting polymer of at least one conjugated diene with a quaternary ammonium tribromide , quaternary phosphonium tribromide compound or both a quaternary ammonium tribromide and a quaternary phosphonium tribromide to brominate 50% to 98% of the conjugated diene repeating units in the starting polymer to form a partially brominated polymer and then (b) reacting the partially brominated polymer with an N-haloimide compound in the presence of water and a water-miscible solvent system for the partially brominated polymer to halohydrate at least a portion of the remaining conjugated diene repeating units and produce a brominated and halohydrated polymer.2. The process of wherein the N-haloimide is an N-halosuccinimide.3. The process of wherein the N-haloimide is an N-bromoimide.4. The process of wherein 65 to 95% of the conjugated diene units are brominated in step (a) claim 1 , 5 to 35% of the conjugated diene units are halohydrated in step (b) claim 1 , and 0 to 5% of the conjugated diene units are unreacted.5. The process of wherein 75 to 98% of the conjugated diene units are brominated in step (a) claim 1 , 2 to 25% of the conjugated diene units are halohydrated in step (b) and 0 to 5% of the conjugated diene units are unreacted.6. (canceled)7. The process of claim 1 , wherein in step (b) the concentration of the partially brominated polymer in the water-miscible solvent system is 2 to 25 weight percent based on the combined weight of partially ...

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Номер записи: 10
02-01-2020 дата публикации

METHOD FOR PRODUCING BROMINATED AND HALOHYDRATED POLYMERS

Номер: US20200002442A1
Автор: Hull, JR. John W., Kram Shari, Porter Michal Elizabeth, Stobby William G.
Принадлежит:

Conjugated diene polymers such as a styrene-butadiene copolymer are sequentially brominated by reaction with a quaternary ammonium tribromide or quaternary phosphonium tribromide and halohydrated by reaction with an N-haloimide compound. This produces a brominated and halohydrated polymer with very good thermal stability. The product is useful as a flame retardant in a variety of polymer systems. 112-. (canceled)13. A brominated and halohydrated polymer made according to a process comprising (a) reacting a starting polymer of at least one conjugated diene with a quaternary ammonium tribromide , quaternary phosphonium tribromide compound or both a quaternary ammonium tribromide and a quaternary phosphonium tribromide to brominate 50% to 98% of the conjugated diene repeating units in the starting polymer to form a partially brominated polymer and then (b) reacting the partially brominated polymer with an N-haloimide compound in the presence of water and a water-miscible solvent system for the partially brominated polymer to halohydrate at least a portion of the remaining conjugated diene repeating units and produce a brominated and halohydrated polymer.14. A brominated and halohydrated polymer of at least one conjugated diene , wherein 2 to 50% of the conjugated diene units of the polymer are halohydrated , 50 to 98% of the conjugated diene units are brominated and 0 to 10% of the conjugated diene units are unreacted , which brominated and halohydrated polymer has a 5% weight loss temperature of at least 250° C.15. The brominated and halohydrated polymer of wherein 5 to 35% of the conjugated diene units are halohydrated claim 13 , 65 to 95% of the conjugated diene units are brominated claim 13 , and 0 to 5% of the conjugated diene units are unreacted.16. The brominated and halohydrated polymer of wherein 2 to 25% of the conjugated diene units are halohydrated claim 13 , 75 to 98% of the conjugated diene units are brominated claim 13 , and 0 to 5% of the conjugated ...

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Номер записи: 11
04-01-2018 дата публикации

ELASTOMERIC COMPOSITIONS COMPRISING VINYL ACETAL POLYMERS

Номер: US20180002497A1
Автор: Basu Soumendra Kumar, Helmer Bradley James, Ignatz Hoover Frederick, Robertson Christopher George, Vargantwar Pruthesh Hariharrao
Принадлежит: EASTMAN CHEMICAL COMPANY

An elastomeric composition is provided comprising at least one vulcanizable unsaturated hydrocarbon elastomeric compound, at least one non-fibril, water insoluble vinyl acetal polymer, at least one filler, and optionally at least one coupling agent. A process of making the elastomeric composition is also provided as well as articles comprising the elastomeric composition. In particular, tires comprising the elastomeric composition are provided wherein the handling and processing characteristics are improved while other performance characteristics are retained. 1. A process for producing an elastomeric composition , said process comprising mixing at least one vulcanizable unsaturated hydrocarbon elastomer , at least one non-fibril , water insoluble vinyl acetal polymer , at least one filler , and optionally at least one coupling agent.2. The process according to wherein said elastomer is selected from the group consisting of natural rubber (NR) claim 1 , styrene-butadiene rubber (SBR) claim 1 , butadiene rubber (BR) claim 1 , nitrile rubber (NBR) claim 1 , 1 claim 1 ,4-cis polybutadiene claim 1 , polychloroprene claim 1 , 1 claim 1 ,4-cis polyisoprene claim 1 , halogenated or non-halogenated isoprene-isobutene copolymers claim 1 , butadiene-acrylonitrile claim 1 , styrene-butadiene-isoprene terpolymers and derivatives and mixtures thereof.4. The process according to wherein said non-fibril claim 3 , water insoluble vinyl acetal polymer has about 25 wt % to about 95 wt % of vinyl acetal monomer units claim 3 , from about 2 wt % to about 40 wt % vinyl alcohol monomer units claim 3 , and 0 wt % to 40 wt % vinyl acetate monomer units.5. The process according to wherein said non-fibril claim 1 , water insoluble vinyl acetal polymer is polyvinyl formal and wherein said polyvinyl formal has about 25 wt % to about 95 wt % of vinyl acetal monomer units claim 1 , from about 2 wt % to about 40 wt % vinyl alcohol monomer units claim 1 , and 0 wt % to 40 wt % vinyl acetate ...

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Номер записи: 12
04-01-2018 дата публикации

REACTIVE SILICA IN EPOXIDIZED POLYBUTADIENER

Номер: US20180002498A1
Автор: McDOWELL Jessica, PAPPAS Christopher, Saintigny Xavier, Vasseur Didier
Принадлежит:

A rubber composition that is based upon a cross-linkable elastomer composition comprising, per 100 parts by weight of rubber (phr) between 70 phr and 100 phr of an epoxidized rubber component selected from an epoxidized polybutadiene rubber (eBR), an epoxidized styrene-butadiene rubber (eSBR), or combinations thereof, wherein the epoxidized rubber component has a Tg of between −80° C. and −110° C. and an epoxy-function content of between 1 mol % and 25 mol %; between 30 phr and 150 phr of a plasticizing resin; and a quickly reactive silica that provides a macro dispersion Z-value of at least 50 in a defined rubber composition; and a non-silol coupling agent. 2. The rubber composition of claim 1 , wherein the quickly reactive silica that provides a macro dispersion Z-value of at least 60.3. The rubber composition of claim 2 , wherein the quickly reactive silica that provides a macro dispersion Z-value of at least 654. The rubber composition of claim 1 , wherein the coupling agent is selected from bis-(triethoxysilylpropyl) tetrasulfide claim 1 , bis-(triethoxysilylpropyl) disulfide or combinations thereof.5. The rubber composition of claim 1 , wherein the epoxidized rubber component is the eBR.6. The rubber composition of claim 1 , wherein the epoxidized rubber component is the eSBR.7. The rubber composition of claim 1 , wherein the quickly reactive silica has a BET surface area of between 140 m/g and 180 m/g as determined by ASTM 5604.8. The rubber composition of claim 1 , wherein the rubber composition comprises between 40 phr and 180 phr of the quickly reactive silica.9. The rubber composition of claim 1 , wherein the rubber composition includes less than 15 phr of carbon black.10. The rubber composition of claim 1 , wherein the plasticizing resin is an efficient plasticizing resin such that when included in a mixture consisting of the epoxidized rubber component and 67 phr of the efficient plasticizing resin claim 1 , causes a Tg of the mixture to be at least 14° ...

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Номер записи: 13
02-01-2020 дата публикации

PACKAGING FILM COMPOSITION RECYCLABLE AND EXCELLENT IN ADHESIVENESS

Номер: US20200002529A1
Автор: LEE Ho-young
Принадлежит:

Disclosed is a packaging film composition recyclable and excellent in adhesiveness, and more particularly to a packaging film composition recyclable and excellent in adhesiveness that is composed of a PET copolymer to secure high adhesiveness and become recyclable, enhancing thermal adhesion and printability of PE- or PP-based films and improving the reprocessability to increase the potential of recycling and to reduce the environmental contaminations caused by the increasing waste plastics. 1. A packaging film composition recyclable and excellent in adhesiveness , comprising:100 parts by weight of a PET copolymer,5 to 120 parts by weight of an ecofriendly plasticizer;5 to 100 parts by weight of acryl rubber or an acryl-based copolymer and butadiene rubber or a butadiene-based copolymer; and5 to 150 parts by weight of a thermoplastic polyester elastomer (TPEE),wherein the packaging film composition is available for processing by any one method of injection, extrusion, and calendering.2. The packaging film composition recyclable and excellent in adhesiveness as claimed in claim 1 , wherein the ecofriendly plasticizer is replaced by vegetable oil.3. The packaging film composition recyclable and excellent in adhesiveness as claimed in claim 1 , wherein the ecofriendly plasticizer is replaced by a styrene-based block copolymer.4. The packaging film composition recyclable and excellent in adhesiveness as claimed in claim 1 , wherein the ecofriendly plasticizer is replaced by a thermoplastic polyurethane (TPU) resin.5. The packaging film composition recyclable and excellent in adhesiveness as claimed in claim 1 , further comprising 5 to 100 parts by weight of a paraffin-based oil.6. The packaging film composition recyclable and excellent in adhesiveness as claimed in claim 1 , wherein the ecofriendly plasticizer is used in combination with a core-shell type copolymer.7. The packaging film composition recyclable and excellent in adhesiveness as claimed in claim 1 , wherein ...

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Номер записи: 14
03-01-2019 дата публикации

TIRE TREAD WITH LOW TG RUBBER

Номер: US20190002653A1
Автор: Piffard Olivier, Stubblefield Raymond
Принадлежит:

Rubber compositions and articles made such rubber compositions having at least 80 phr of a styrene-butadiene elastomer modified with a functional group that is capable of interacting with a silica reinforcing filler and having a glass transition temperature of between −60° C. and less than −40° C. The rubber compositions may also include an effective amount of a plasticizing system having a plasticizing resin and a plasticizing liquid, wherein the effective amount of the plasticizing system provides the rubber composition with a shear modulus G* measured at 60° C. of between 0.9 MPa and 1.5 MPa and a Tg of between −35° C. and −15°. The filler for the rubber compositions is silica and there is further a curing system. 1. A tread for a tire , the tread comprising a rubber composition that is based upon a cross-linkable elastomer composition , the cross-linkable elastomer composition comprising , per 100 parts by weight of rubber (phr):greater than 85 phr of a styrene-butadiene elastomer modified with a functional group that is capable of interacting with a silica reinforcing filler and having a glass transition temperature of between −60° C. and less than −40° C.;between 0 phr and less than 15 phr of an additional highly unsaturated diene elastomer;an effective amount of a plasticizing system that includes 3 phr and 40 phr of a plasticizing resin having a glass transition temperature (Tg) of at least 25° C. and a plasticizing liquid, wherein the effective amount of the plasticizing system provides the rubber composition with a shear modulus G* measured at 60° C. of between 0.9 MPa and 1.5 MPa and a Tg of between −35° C. and −15°;between 45 phr and 95 phr of a silica reinforcing filler; anda curing system.2. The tread of claim 1 , wherein the cross-linkable elastomer composition comprises 100 phr of the styrene-butadiene elastomer.3. The tread of claim 1 , wherein the butadiene portion of the styrene-butadiene elastomer has a vinyl-1 claim 1 ,2 content of less than 35 ...

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Номер записи: 15
01-01-2015 дата публикации

Conjugated diene polymer production method, and conjugated diene polymer composition production method

Номер: US20150005440A1
Автор: Mana FUJII
Принадлежит: Sumitomo Chemical Co Ltd

A method for producing a conjugated diene-based polymer is provided, in which compounds of formulas (2) and (3) and a conjugated diene compound are polymerized using a compound of formula (1), and then a compound containing a nitrogen atom and/or a silicon atom is reacted with an active end of the polymer formed via the polymerization, R 11 represents a hydrocarbylene group, R 12 and R 13 each represent an optionally substituted hydrocarbyl group or a trihydrocarbylsilyl group, or R 12 is bonded to R 3 and the group in which R 12 is bonded to R 13 represents a hydrocarbylene group optionally having a nitrogen and/or oxygen atom, —Si(R 14 ) 2 —(CH 2 ) x —Si(R 14 ) 2 —, or —Si(R 15 ) 2 —(CH 2 ) y − , and M represents an alkali metal atom, E 2 -A 2   (2) E 3 -A 3   (3) E 2 and E 3 each represent a hydrocarbyl group having a polymerizable carbon-carbon double bond, A 2 represents a substituted amino group or a nitrogen-containing heterocyclic group, and A 3 represents a substituted silyl group.

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Номер записи: 16
03-01-2019 дата публикации

CHARGING ROLLER, AND METHOD OF PRODUCING THE SAME

Номер: US20190004447A1
Автор: SUZUKI Daijiro
Принадлежит: SUMITOMO RUBBER INDUSTRIES, LTD.

An inventive charging roller () includes a roller body () which is formed of a crosslinked product of a rubber composition containing a rubber component including 30 to 70 parts by mass of GECO, 15 to 60 parts by mass of IR and not less than 1 part by mass of SBR and/or NBR based on 100 parts by mass of the overall rubber component and has an outer peripheral surface () finished in a finish-polished surface. An inventive production method includes the steps of: forming a roller body () from the crosslinked product of the rubber composition described above; and wet-polishing or mirror-polishing an outer peripheral surface () of the roller body () into a finish-polished surface. 3. The charging roller according to claim 1 , further comprising an oxide film provided in the outer peripheral surface.4. The charging roller according to claim 2 , further comprising an oxide film provided in the outer peripheral surface.7. The charging roller production method according to claim 5 , further comprising the step of forming an oxide film in the outer peripheral surface by irradiating the outer peripheral surface with ultraviolet radiation. The present invention relates to a charging roller to be used in an electrophotographic image forming apparatus, and to a method of producing the same.In an electrophotographic image forming apparatus such as a laser printer, an electrostatic copying machine, a plain paper facsimile machine or a printer-copier-facsimile multifunction machine, a charging roller is used for uniformly electrically charging a surface of a photoreceptor body.The charging roller typically includes a roller body having a single layer structure or a multilayer structure including a layer produced, for example, by preparing a semiconductive rubber composition containing an ion conductive rubber (e.g., epichlorohydrin rubber) as a rubber component, forming the semiconductive rubber composition into a tubular body and then crosslinking the rubber component of the ...

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Номер записи: 17
12-01-2017 дата публикации

Rubber composition for tire, tire, and method for manufacturing the tire

Номер: US20170009064A1
Автор: Fumihiko Nakamura
Принадлежит: Toyo Tire and Rubber Co Ltd

A rubber composition for a tire comprises 100 parts by mass of a rubber component comprising diene rubber, and from 0.5 to 20 parts by mass of pellets comprising paper powder and starch and having water content of 5 mass % or more. A tire is provided with a tread rubber part comprising a foamed rubber formed by the rubber composition. A method for manufacturing a tire comprises mixing from 0.5 to 20 parts by mass of pellets comprising paper powder and starch and having water content of 5 mass % or more with 100 parts by mass of a rubber component comprising diene rubber to prepare a rubber composition, producing an unvulcanized tire using the rubber composition obtained, and vulcanization molding the unvulcanized tire.

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Номер записи: 18
14-01-2016 дата публикации

MODIFIED CONJUGATED DIENE POLYMER AND METHOD FOR PRODUCING SAME, POLYMER COMPOSITION, CROSSLINKED POLYMER, AND TIRE

Номер: US20160009903A1
Автор: INOUE Masaaki, Morita Hiroyuki, OKADA Koji, Tani Koichiro
Принадлежит: JSR Corporation

The invention provides a rubber composition which can improve low fuel consumption performance, workability, and abrasion resistance at the same time in uses of automobile tires and the like. A modified conjugated diene polymer is produced by a method comprising: a polymerization step of polymerizing a conjugated diene compound or polymerizing a conjugated diene compound and an aromatic vinyl compound to obtain a conjugated diene polymer having an active end in the presence of a metal amide compound obtained by mixing an alkali metal compound or an alkaline earth metal compound with a secondary amine compound and a first modification step of reacting the active end with a compound (C1) having a functional group (a) that interacts with silica, having one or more linear structures where three or more groups or atoms in total derived from at least either of a methylene group and a divalent atom are linearly connected, and capable of binding to a plurality of the active ends. 1. A method for producing a modified conjugated diene polymer , comprising:a polymerization step of polymerizing a conjugated diene compound or polymerizing a conjugated diene compound and an aromatic vinyl compound to obtain a conjugated diene polymer having an active end, in the presence of a metal amide compound obtained by mixing an alkali metal compound or an alkaline earth metal compound with a secondary amine compound anda first modification step of reacting the active end with the following compound (C1):(C1) a compound having a functional group (a) that interacts with silica, having one or more linear structures where three or more groups or atoms in total derived from at least either of a methylene group and a divalent atom are linearly connected, and capable of binding to a plurality of the active ends.2. The method for producing a modified conjugated diene polymer according to claim 1 , wherein (C1) is the following compound (C1′):(C1′) a compound having a functional group (a) that ...

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Номер записи: 19
09-01-2020 дата публикации

GOLF BALL

Номер: US20200009426A1
Автор: TANAKA Mami, TARAO Toshiyuki
Принадлежит: SUMITOMO RUBBER INDUSTRIES, LTD.

A golf ball includes a main body and a paint layer positioned outside the main body. The paint layer includes an inner layer and an outer layer positioned outside the inner layer. When an indentation depth (nm) is measured on a cross-section along a plane passing through a central point of the golf ball when a force of 30 mgf is applied to the cross-section in a direction perpendicular to the cross-section, an indentation depth Di on a cross-section of the inner layer is smaller than an indentation depth Do on a cross-section of the outer layer. A thickness To of the outer layer is larger than a thickness Ti of the inner layer. 1. A golf ball comprising a main body and a paint layer positioned outside the main body , whereinthe paint layer includes an inner layer and an outer layer positioned outside the inner layer,when an indentation depth (nm) is measured on a cross-section along a plane passing through a central point of the golf ball when a force of 30 mgf is applied to the cross-section in a direction perpendicular to the cross-section, an indentation depth Di on a cross-section of the inner layer is smaller than an indentation depth Do on a cross-section of the outer layer, anda thickness To of the outer layer is larger than a thickness Ti of the inner layer.2. The golf ball according to claim 1 , wherein the indentation depth Do is not less than 1000 nm and not greater than 3500 nm.3. The golf ball according to claim 1 , wherein the indentation depth Di is not less than 100 nm and less than 1000 nm.4. The golf ball according to claim 1 , wherein the thickness To is not less than 8 μm and not greater than 20 μm.5. The golf ball according to claim 1 , wherein the thickness Ti is not less than 1 μm and not greater than 10 μm.6. The golf ball according to claim 1 , wherein a difference (To−Ti) between the thickness To and the thickness Ti is not less than 3 μm and not greater than 17 μm.7. The golf ball according to claim 1 , wherein a difference (Do−Di) between ...

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Номер записи: 20
10-01-2019 дата публикации

TOOTHED BELT

Номер: US20190011016A1
Автор: MEKI Yoshitaka, NAKASHIMA Eijiro, TAGA Atsushi, YOSHIDA Yasuhiko
Принадлежит: BANDO CHEMICAL INDUSTRIES, LTD.

A toothed belt is provided with toothed portions arranged at a regular pitch in a belt length direction. A belt body is made of a rubber composition containing, as a main ingredient of a rubber component, ethylene-α-olefin elastomer having an ethylene content of 44% by mass to 66% by mass. A reinforcing fabric is adhered to a surface of the belt body on a toothed side, with a reinforcing fabric adhesion coat interposed between the reinforcing fabric and the belt body. The reinforcing fabric adhesion coat is made of a rubber composition containing hydrogenated nitrile-butadiene rubber as a main ingredient of a rubber component. 1. A toothed belt provided with toothed portions arranged at a regular pitch in a belt length direction , the toothed belt comprising:a belt body made of a rubber composition containing, as a main ingredient of a rubber component, ethylene-α-olefin elastomer having an ethylene content of 44% by mass to 66% by mass; anda reinforcing fabric adhered to a surface of the belt body on a toothed side, with a reinforcing fabric adhesion coat interposed between the belt body and the reinforcing fabric, the reinforcing fabric adhesion coat being made of a rubber composition containing hydrogenated nitrile-butadiene rubber as a main ingredient of a rubber component.2. The toothed belt of claim 1 , whereinthe ethylene-α-olefin elastomer contained in the rubber component of the rubber composition making the belt body has an ethylene content of 60% by mass or less.3. The toothed belt of claim 1 , whereinthe rubber composition making the belt body is crosslinked by using an organic peroxide.4. The toothed belt of claim 1 , whereinthe rubber composition making the belt body contains a co-crosslinking agent.5. The toothed belt of claim 4 , whereinthe co-crosslinking agent contains trimethylolpropane trimethacrylate.6. The toothed belt of claim 4 , whereinthe co-crosslinking agent contains zinc dimethacrylate.7. The toothed belt of claim 1 , whereinthe rubber ...

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Номер записи: 21
15-01-2015 дата публикации

SEALING MATERIAL AND METHOD FOR PRODUCING SAME

Номер: US20150014946A1
Автор: Ishikawa Kenichiro, Omura Atsushi, Oohinata Tetsuo
Принадлежит:

Provided is a sealing material that exhibits excellent sealing property at a low contact pressure and a method for producing the same. A sealing material according to the present invention is a sealing material including a metal plate and a foamed rubber layer formed on one surface, or each of both surfaces, of the metal plate, in which the foamed rubber layer has a closed cell rate of 50% or more, and a surface of the foamed rubber layer has a maximum height determined by a method in conformity to JIS B 0601-2001 of 40 μm or less. 1. A sealing material , comprising a metal plate and a foamed rubber layer formed on one surface , or each of both surfaces , of the metal plate , wherein the foamed rubber layer has a closed cell rate of 50% or more , and a surface of the foamed rubber layer has a maximum height Rz determined by a method in conformity to JIS B 0601-2001 of 40 μm or less.2. The sealing material according to claim 1 , wherein a result obtained by a test of a cross-cut method in conformity to JIS K5600-5-6 after immersion in water corresponds to Class 0 claim 1 , Class 1 claim 1 , or Class 2.3. The sealing material according to claim 1 , wherein the foamed rubber layer is formed by foaming a rubber composition layer including a thermally-degradable foaming agent.4. The sealing material according to claim 1 , wherein the foamed rubber layer is formed by heating a rubber composition layer formed on the one surface claim 1 , or each of the both surfaces claim 1 , of the metal plate at a temperature equal to or higher than a cross-linking temperature and lower than a foaming temperature claim 1 , and then heating the rubber composition layer at a temperature equal to or higher than the foaming temperature.5. A method for producing a sealing material including a metal plate and a foamed rubber layer formed on one surface claim 1 , or each of both surfaces claim 1 , of the metal plate claim 1 , the method comprising a step of heating a rubber composition layer ...

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Номер записи: 22
03-02-2022 дата публикации

PROCESS FOR TREATING DREGS, TREATED DREGS, USE THEREOF, PROCESS FOR VULCANIZING RUBBER, AND VULCANIZED RUBBER

Номер: US20220034033A1
Автор: Scodro Sandro Antônio
Принадлежит:

Provided herein is a process for treating dregs for the application thereof as vulcanization activator of rubbers, putting an end to this residue generated in the cellulose industry and providing vulcanized rubbers with similar or enhanced properties in relation to those already known. The process for treating dregs includes the steps of: (a) drying the dregs; and (b) micronization of the dry dregs to an average particle size (d50) from 2 to 45 micrometers. Further provided herein are treated dregs, a use of treated dregs as vulcanization activator, and a process for vulcanizing rubber and the vulcanized rubber. 123-. (canceled)24. A rubber vulcanization process , comprising the step of adding a vulcanization activator to the rubber to be vulcanized , wherein the vulcanization activator is treated dregs that comprise an average particle size (d50) from 2 to 45 micrometers , preferably , 10 to 15 micrometers , and more preferably , 10 micrometers , and comprise , in % by mass based on the treated dregs:Loss on Ignition (LOI): 35 to 45;{'sub': '2', 'SiO: 0.5 to 2.0;'}{'sub': 2', '3, 'AlO: 0.5 to 1.5;'}{'sub': 2', '3, 'FeO: 0.5 to 1.5;'}{'sub': '2', 'TiO: 0.0 to 1.0;'}CaO: 35 to 50;MgO: 2 to 20;{'sub': '2', 'KO: 0.0 to 1.0;'}{'sub': '2', 'NaO: 0.5 to 5.0;'}{'sub': 2', '5, 'PO: 0.2 to 1.5;'}BaO: 0.0 to 0.2;SrO: 0.0 to 0.5;MnO: 0.1 to 2.0; and{'sub': '3', 'SO: 0.5 to 5.0.'}251. The rubber vulcanization process according to claim , wherein the rubber is natural rubber , styrene butadiene rubber (SBR) , ethylene-propylene dimer rubber (EPDM) , polybutadiene rubber (BR) , or nitrile rubber (NBR).261. The rubber vulcanization process according to claim , wherein 1 to 5 parts of the treated dregs are added per 100 parts of the rubber to be vulcanized.271. Vulcanized rubber obtained according to the process defined in claim , comprising , in % by mass based on the mass of the vulcanized rubber: Zinc oxide: 0 to 5 parts', 'Stearin (Lubricant): 1 to 2 parts', 'Accelerators: 0.5 ...

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Номер записи: 23
19-01-2017 дата публикации

CROSSLINKING RUBBER COMPOSITION AND CROSSLINKED RUBBER PRODUCTION METHOD

Номер: US20170015797A1
Автор: FUKUMINE Yoshio, KATADA Arinobu, SHIONO Atsuhiro
Принадлежит: ZEON CORPORATION

A cross-linked rubber is excellent in both fuel oil resistance and cold resistance. A cross-linkable rubber composition contains: a nitrile group-containing copolymer rubber [A] including less than 30 wt % α,β-ethylenically unsaturated nitrile monomer units (a1), conjugated diene monomer units (b1), and α,β-ethylenically unsaturated dicarboxylic acid monoester monomer units (d1), wherein at least part of the conjugated diene monomer units (b1) is hydrogenated; a nitrile group-containing copolymer rubber [B] including not less than 30 wt % α,β-ethylenically unsaturated nitrile monomer units (a2) and conjugated diene monomer units (b2), wherein at least part of the conjugated diene monomer units (b2) may be hydrogenated; and an amine-based cross-linking agent. 1. A cross-linkable rubber composition comprising:a nitrile group-containing copolymer rubber [A] including less than 30 wt % α,β-ethylenically unsaturated nitrile monomer units (a1), conjugated diene monomer units (b1), and α,β-ethylenically unsaturated dicarboxylic acid monoester monomer units (d1), wherein at least part of the conjugated diene monomer units (b1) is hydrogenated;a nitrile group-containing copolymer rubber [B] including not less than 30 wt % α,β-ethylenically unsaturated nitrile monomer units (a2) and conjugated diene monomer units (b2), wherein at least part of the conjugated diene monomer units (b2) may be hydrogenated; andan amine-based cross-linking agent.2. The cross-linkable rubber composition according to claim 1 , wherein the nitrile group-containing copolymer rubber [A] further includes (meth)acrylic acid alkoxyalkyl ester monomer units (c).3. The cross-linkable rubber composition according to claim 1 , wherein the nitrile group-containing copolymer rubber [A] has an iodine value of not more than 120.4. The cross-linkable rubber composition according to claim 1 , wherein the α claim 1 ,β-ethylenically unsaturated dicarboxylic acid monoester monomer units (d1) are units of mono n-butyl ...

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Номер записи: 24
19-01-2017 дата публикации

HIGH PERFORMANCE LIGNIN-ACRYLONITRILE POLYMER BLEND MATERIALS

Номер: US20170015828A1
Автор: Naskar Amit K., Tran Chau D.
Принадлежит:

A polymer blend material comprising: (i) a lignin component having a weight-average molecular weight of up to 1,000,000 g/mol; and (ii) an acrylonitrile-containing copolymer rubber component comprising acrylonitrile units in combination with diene monomer units, and having an acrylonitrile content of at least 20 mol %; wherein said lignin component is present in an amount of at least 5 wt % and up to about 95 wt % by total weight of components (i) and (ii); and said polymer blend material possesses a tensile yield stress of at least 5 MPa, or a tensile stress of at least 5 MPa at 10% elongation, or a tensile stress of at least 5 MPa at 100% elongation. Methods for producing the polymer blend, molded forms thereof, and articles thereof, are also described. 1. A polymer blend material comprising:(i) a lignin component having a weight-average molecular weight of up to 1,000,000 g/mol; and(ii) an acrylonitrile-containing copolymer rubber component comprising acrylonitrile units in combination with diene monomer units, and having an acrylonitrile content of at least 20 mol %;wherein said lignin component is present in an amount of at least 5 wt % and up to about 95 wt % by total weight of components (i) and (ii); andsaid polymer blend material possesses either a tensile yield stress of at least 5 MPa, or a tensile stress of at least 5 MPa at 10% elongation, or a tensile stress of at least 5 MPa at 100% elongation.2. The polymer blend material of claim 1 , wherein said acrylonitrile content is at least 30 mol %.3. The polymer blend material of claim 1 , wherein said acrylonitrile content is at least 35 mol %.4. The polymer blend material of claim 1 , wherein said acrylonitrile content is at least 40 mol %.5. The polymer blend material of claim 1 , wherein said lignin is a softwood lignin claim 1 , a hardwood lignin claim 1 , or a grass-derived lignin.6. The polymer blend material of claim 1 , wherein said lignin has a weight-average molecular weight of up to 10 claim 1 , ...

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Номер записи: 25
21-01-2016 дата публикации

LATEX COMPOSITION

Номер: US20160017109A1
Автор: BOSTYN Arnaud R. W.
Принадлежит: SOBELTEC

The present invention relates to a latex composition comprising:

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Номер записи: 26
18-01-2018 дата публикации

METHOD FOR PRODUCING MASTER BATCH, MASTER BATCH OBTAINED BY SAID PRODUCTION METHOD, RUBBER COMPOSITION FOR TIRE, AND PNEUMATIC TIRE

Номер: US20180016402A1
Автор: Fujii Takeshi, KAWASAKI TAKAFUMI, Mabuchi Takahiro, MIYAZAKI Sumiko, Nakayama Takeshi
Принадлежит:

The present invention provides, inter alia, a method for producing a masterbatch in which the dispersibility of microfibrillated plant fibers is further increased to obtain excellent processability and improved rubber properties such as fuel economy, tensile strength, and elongation at break. The present invention relates to a method for producing a masterbatch, the method including step (I) of mixing a rubber latex with microfibrillated plant fibers oxidized with an N-oxyl compound to obtain a mixture, and coagulating the mixture by adjusting its pH to 2 to 6. 1. A method for producing a masterbatch , the method comprisingstep (I) of mixing a rubber latex with microfibrillated plant fibers oxidized with an N-oxyl compound to obtain a mixture, and coagulating the mixture by adjusting its pH to 2 to 6.2. The method for producing a masterbatch according to claim 1 ,wherein the masterbatch comprises 10 to 50 parts by mass of the microfibrillated plant fibers per 100 parts by mass of a rubber component in the masterbatch.3. A masterbatch claim 1 , produced by the method according to .4. A rubber composition for tires claim 3 , prepared from the masterbatch according to .5. A pneumatic tire claim 4 , formed from the rubber composition according to . The present invention relates to a method for producing a masterbatch, a masterbatch produced by the method, a rubber composition for tires, and a pneumatic tire.Rubber compositions can be reinforced to show enhanced modulus (complex elastic modulus) by incorporating microfibrillated plant fibers such as cellulose fibers as filler into the rubber compositions. However, since microfibrillated plant fibers are highly self-aggregative and poorly compatible with rubber components, they show low dispersibility during rubber kneading. For this reason, the incorporation of microfibrillated plant fibers may deteriorate fuel economy or other properties. There is also a need for methods for improving the dispersibility of ...

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Номер записи: 27
24-01-2019 дата публикации

POLYMER LATEX PRODUCTION METHOD

Номер: US20190023854A1
Автор: ISHII Hidetake, KODEMURA Junji
Принадлежит: ZEON CORPORATION

A method for producing a polymer latex, including an emulsification step of emulsifying a polymer solution obtained by dissolution of synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer having a molecular weight distribution of 1.0 to 2.6 in an organic solvent, in water in the presence of a surfactant, to thereby obtain an emulsified liquid, wherein as the synthetic polyisoprene and/or styrene-isoprene-styrene block copolymer, used are/is synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer which, when dissolved in an organic solvent to thereby be formed into a polymer solution having a viscosity at a temperature of 60° C. of 20,000 cps, have/has a solid content concentration in the range of 10 to 60% by weight. 1. A method for producing a polymer latex , comprising an emulsification step of emulsifying a polymer solution obtained by dissolution of synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer having a molecular weight distribution of 1.0 to 2.6 in an organic solvent , in water in the presence of a surfactant , to thereby obtain an emulsified liquid , whereinas the synthetic polyisoprene and/or styrene-isoprene-styrene block copolymer, used are/is synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer which, when dissolved in an organic solvent to thereby be formed into a polymer solution having a viscosity at a temperature of 60° C. of 20,000 cps, have/has a solid content concentration in the range of 10 to 60% by weight.2. The method for producing a polymer latex according to claim 1 , wherein as the synthetic polyisoprene and/or styrene-isoprene-styrene block copolymer claim 1 , used are/is synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer which claim 1 , when dissolved in n-hexane to thereby be formed into a polymer solution having a viscosity at a temperature of 60° C. of 20 claim 1 ,000 cps claim 1 , have/has a solid content concentration in the range ...

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Номер записи: 28
24-01-2019 дата публикации

Stator Compound Having an NBIR Terpolymer Elastomeric Base and Stators and Downhole Motors Using the Same

Номер: US20190023878A1
Автор: Kyker Gary Stephen
Принадлежит:

A stator compound including an acrylonitrile butadiene isoprene rubber (NBIR) terpolymer elastomeric base. 110-. (canceled)11. A method of making a stator compound , comprising:during a first mixing stage, mixing a high reinforcing carbon black with an elastomeric base at a temperature below about 300 degrees Fahrenheit without curing agents to produce a mixture, wherein the elastomeric base has one or more rubber components, wherein the only rubber components of the elastomeric base are acrylonitrile butadiene isoprene rubbers (NBIR);andduring a second mixing stage, mixing curing agents into the mixture.12. The method of claim 11 , wherein mixing a high reinforcing carbon black with the elastomeric base comprises mixing a high reinforcing carbon black having a surface area of about 80 to about 250 (Iodine # mg/g) and a structure of about 70 to about 178 (DOP Absorption-cc/100 g) with the elastomeric base.13. The method of claim 11 , further comprising mixing a semi-reinforcing carbon black with the elastomeric base during the first mixing stage.14. The method of claim 13 , wherein mixing a semi-reinforcing carbon black with the elastomeric base comprises mixing a semi-reinforcing carbon black having a surface area of about 20 to about 50 (Iodine # mg/g) and a structure of about 60 to about 125 (DOP Absorption-cc/100 g) with the elastomeric base.15. The method of claim 11 , further comprising mixing at least one plasticizer selected from the group consisting of polymeric and ester plasticizers with the elastomeric base during the first mixing stage.16. The method of claim 11 , wherein mixing curing agents into the mixture comprises mixing sulfur into the mixture during the second mixing stage.17. The method of claim 11 , further comprising mixing an antioxidant with the elastomeric base during the first mixing stage.18. The method of claim 11 , further comprising mixing at least one of a phenolic resin without a curing agent claim 11 , zinc oxide claim 11 , stearic ...

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Номер записи: 29
26-01-2017 дата публикации

ELECTRICALLY CONDUCTIVE RUBBER COMPOSITION, TRANSFER ROLLER, AND IMAGE FORMING APPARATUS

Номер: US20170025197A1
Автор: SATOYOSHI Naoyuki, TANIO Yusuke
Принадлежит: SUMITOMO RUBBER INDUSTRIES, LTD.

An electrically conductive rubber composition is provided, which comprises a rubber component including an SBR, an EPDM and an epichlorohydrin rubber, a crosslinking component and an azodicarbonamide foaming agent having an average particle diameter of 3 to 11 μm. The azodicarbonamide foaming agent is blended in a proportion of 0.5 to 8 parts by mass based on 100 parts by mass of the overall rubber component. A transfer roller () is produced by extruding the electrically conductive rubber composition into an elongated tubular body, and continuously feeding out the tubular body in the elongated state without cutting the tubular body to continuously pass the tubular body through a microwave crosslinking device and a hot air crosslinking device to continuously foam and crosslink the tubular body. 1. An electrically conductive rubber composition which can be foamed and crosslinked by means of a continuous crosslinking apparatus including a microwave crosslinking device and a hot air crosslinking device , the electrically conductive rubber composition comprising:a rubber component including at least a styrene butadiene rubber, an ethylene propylene diene rubber and an epichlorohydrin rubber;a crosslinking component for crosslinking the rubber component; anda foaming component for foaming the rubber component;wherein the foaming component comprises an azodicarbonamide foaming agent having an average particle diameter of not less than 3 μm and not greater than 11 μm in a proportion of not less than 0.5 parts by mass and not greater than 8 parts by mass based on 100 parts by mass of the overall rubber component.2. The electrically conductive rubber composition according to claim 1 , wherein the rubber component comprises at least one polar rubber selected from the group consisting of an acrylonitrile butadiene rubber claim 1 , a chloroprene rubber claim 1 , a butadiene rubber and an acryl rubber. The present application is a 37 C.F.R. §1.53(b) divisional of U.S. application ...

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Номер записи: 30
23-01-2020 дата публикации

PROCESS FOR REGENERATING A MONOLITHIC, MACRO-STRUCTURAL, INTER-PENETRATING ELASTOMER NETWORK MORPHOLOGY FROM GROUND TIRE RUBBER PARTICLES

Номер: US20200024433A1
Автор: Coe William B.
Принадлежит:

Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications. 1. A method for preparing a modified rubber , comprising:introducing an aqueous slurry comprising vulcanized rubber particles and an organometallic compound into an electromechanical reactor configured to generate a phase space environment with cavitation, so as to induce delamination of a rubber matrix within the vulcanized rubber particles as coordinated with disrupting sulfidic linkages.2. The method of claim 1 , further comprising reestablishing dislocated sulfidic linkages to establish within the matrix sulfur bridge cross linked claim 1 , re-aligned claim 1 , laminates.3. The method of claim 1 , wherein delamination is associated with a portion of rigid sulfidic bridges of the vulcanized rubber particles becoming unbound at an original methyl carbocation while remaining tethered at an original allylic carbocation.4. The method of claim 1 , wherein the organometallic compound comprises a metal having octahedral molecular geometry.5. The method of claim 1 , wherein the organometallic compound comprises a metal ion selected from the group consisting of Co claim 1 , Cu claim 1 , Ni claim 1 , Zn claim 1 , and Mn.6. The method of claim 1 , wherein the organometallic compound comprises an organic anion as a ligand to the metal ion.7. The method of claim 6 , wherein the organic anion comprises acetate ion.8. The method of claim 1 , wherein the organometallic compound is copper acetate.9. The method of claim 1 , wherein the organometallic compound is a metal salt that undergoes a phase change from solid to liquid in a range ...

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Номер записи: 31
23-01-2020 дата публикации

PROCESS FOR TREATING DREGS, TREATED DREGS, USE THEREOF, PROCESS FOR VULCANIZING RUBBER, AND VULCANIZED RUBBER

Номер: US20200024801A1
Автор: Scodro Sandro Antônio
Принадлежит:

Provided herein is a process for treating dregs for the application thereof as vulcanization activator of rubbers, putting an end to this residue generated in the cellulose industry and providing vulcanized rubbers with similar or enhanced properties in relation to those already known. The process for treating dregs includes the steps of: (a) drying the dregs; and (b) micronization of the dry dregs to an average particle size (d50) from 2 to 45 micrometers. Further provided herein are treated dregs, a use of treated dregs as vulcanization activator, and a process for vulcanizing rubber and the vulcanized rubber. 1. A process for treating dregs , the process comprising the steps of:(a) drying the dregs; and(b) micronization of the dregs to an average particle size (d50) from 2 to 45 micrometers.2. The process for treating dregs according to claim 1 , wherein the step (a) of drying is carried out by a dryer tunnel claim 1 , a rotary drum dryer claim 1 , or a fluid bed dryer.3. The process for treating dregs according to claim 1 , wherein the step (b) of micronization is carried out until the average particle size (d50) of the dregs reaches 10 to 15 micrometers.4. The process for treating dregs according to claim 1 , wherein the step (b) of micronization is carried out using equipment including a hammer mill claim 1 , a ball mill claim 1 , a rod mill claim 1 , an air jet mill claim 1 , a pendular mill claim 1 , and/or a long gap mill.5. The process for treating dregs according to claim 4 , wherein the step (a) of drying can be carried out by the same equipment as used in the step (b) of micronization.6. The process for treating dregs according to claim 5 , wherein the equipment includes the pendular mill claim 5 , the air jet mill claim 5 , or the long gap mill.7. The process for treating dregs according to claim 1 , wherein a drying capacity is from 60 to 6 claim 1 ,000 kg HO/hour.8. The process for treating dregs according to claim 1 , wherein an operating power of ...

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Номер записи: 32
01-02-2018 дата публикации

Scrubbing article and method of making same

Номер: US20180028037A1
Автор: Daniel J. O'neal, Ibrahim S. Gunes, Irem Bolukbasi, Matthew S. COLE, Paul N. Daveloose
Принадлежит: 3M Innovative Properties Co

A scrubbing article ( 10 ) including a substrate ( 12 ) and an e-beam treated texture layer ( 14 ) on a surface of the substrate ( 12 ). The substrate ( 12 ) comprises a material suitable for use as a scrubbing article. The e-beam treated texture layer ( 14 ) is a resin-based material forming a textured abrasive layer ( 14 ) on the surface of the substrate ( 12 ).

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Номер записи: 33
29-01-2015 дата публикации

METHOD FOR MAKING FUNCTIONALIZED SILICA FOR RUBBER MASTERBATCH

Номер: US20150031796A1
Автор: Debnath Subir, JR. Harold William, Young
Принадлежит:

A method for blending functionalized silica with styrene butadiene rubber or ethylene propylene diene monomer rubber can include silica and an organosilane chemically and covalently bound to a surface of the silica. The organosilane can be derived from an organic silane with a functional group. A silica rubber masterbatch for complexing with an emulsion styrene butadiene rubber latex, a synthetic polymer, a natural polymer, or combinations thereof can include the functionalized silica with the organosilane or a blend of organosilanes chemically and covalently bound to a surface of the silica. Each organosilane can have an average tetrameric structure having a T/Tratio of 0.3 to 0.9 or greater as measured by Si silicon cross polarization magic angle spinning nuclear magnetic resonance. 2. The method of claim 1 , wherein the functionalized silica comprises an organosilane attached to a surface of the silica.3. The method of claim 1 , wherein the silica has a specific surface area ranging from 100 m2/gm to 300 m2/gm claim 1 , as measured by the Brunauer-Emmett-Teller analysis.4. The method of claim 1 , wherein the silica is a fumed silica or a precipitated silica.5. The method of claim 1 , wherein X is a vinyl group and Y is an integer greater than zero.6. The method of claim 1 , wherein the Z1 claim 1 , Z2 claim 1 , and the Z3 are each independently selected from the following: a hydrogen claim 1 , a C1-C18 alkyl claim 1 , an aryl claim 1 , a cycloalkyl claim 1 , an aryl alkoxy claim 1 , and a halo-substituted alkyl claim 1 , and at least one of Z1 claim 1 , Z2 claim 1 , and the Z3 is an alkoxy claim 1 , a hydrogen claim 1 , a halogen claim 1 , or a hydroxyl.7. The method of claim 1 , comprising simultaneously adding a third silane coupling agent while the first and second silane coupling agents are added to the silica.8. The method of claim 7 , wherein the third silane coupling agent is an ethanol free silane.9. The method of claim 1 , wherein the first and second ...

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Номер записи: 34
02-02-2017 дата публикации

Thermosetting resin composition, and resin varnish, metal foil with resin, resin film, metal-clad laminate, and printed wiring board using the same

Номер: US20170029619A1
Автор: Hiroaki Fujiwara, Lin Lin, Yuki Kitai
Принадлежит: Panasonic Intellectual Property Management Co Ltd

There is provided a thermosetting resin composition including: (A) a modified polyphenylene ether compound which is terminal-modified by using a substituent having a carbon-carbon unsaturated double bond at a molecular terminal; (B) a styrene-butadiene copolymer having a number average molecular weight less than 10,000 and including 1,2 vinyl having cross-linking properties in molecules; (C) a hardening accelerator; and (D) an inorganic filler, in which a compound ratio of (A) component:(B) component is in a range of 80:20 to 20:80.

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Номер записи: 35
01-02-2018 дата публикации

Rubber composition for tire and tire

Номер: US20180030215A1
Автор: Makiko Yonemoto
Принадлежит: Bridgestone Corp

This disclosure provides a rubber composition for tire obtainable by a method for producing a rubber composition comprising: (a) preparing a preliminary composition by preparing a first mixture containing all of or a part of a diene based rubber (A), a silica (B), a silane coupling agent (C) and an activator (D), and containing a glycerin fatty acid ester (E), and kneading the first mixture; and (b) preparing the rubber composition by adding a vulcanizing agent (t,F) into the preliminary composition to prepare a second mixture, and kneading the second mixture, wherein: the glycerin fatty acid ester (E) is an ester of a glycerin and two or more fatty acids, a fatty acid component which is the most among the two or more fatty acids constituting the glycerin fatty acid ester being 10 to 90 mass % of all the fatty acids.

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Номер записи: 36
17-02-2022 дата публикации

Reinforcing fiber, method for manufacturing same, and molded body using same

Номер: US20220049062A1
Автор: Daisuke Koda, Hiroyuki Kawai, Shinichi Takemoto, Shuhei Yorimitsu, Toru Asada
Принадлежит: Kuraray Co Ltd

Provided are reinforcing fibers using an adhesive component not containing resorcinol and formaldehyde, which are excellent in adhesiveness to rubber and which can be efficiently produced while preventing contamination of production facilities, and a method for producing them, as well as a molded article using them. The reinforcing fibers have an adhesive component that contains a conjugated diene rubber and an oil, in at least a part of the surfaces thereof, wherein the vapor pressure at 20° C. of the oil is 10 Pa or less.

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Номер записи: 37
31-01-2019 дата публикации

Method for producing polymer latex

Номер: US20190031788A1
Автор: Junji Kodemura, Yoshitaka Satoh
Принадлежит: Zeon Corp

A method for producing a polymer latex, includes: a stirring step of adding water to a polymer solution obtained by dissolution of a synthetic rubber in an organic solvent, to allow water to be stirred in the polymer solution, thereby providing a water-stirred polymer solution (A); an aqueous phase removal step of removing an aqueous phase from the water-stirred polymer solution (A), thereby providing an aqueous phase-removed polymer solution (B); an emulsification step of mixing the aqueous phase-removed polymer solution (B) with an aqueous solution including a surfactant, for emulsification in water, thereby obtaining an emulsified liquid (C); a solvent removal step of removing an organic solvent in the emulsified liquid (C); and a concentration step of concentrating the emulsified liquid from which the organic solvent is removed (D).

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Номер записи: 38
31-01-2019 дата публикации

RUBBER COMPOSITIONS CONTAINING CARBON BLACK AND WHEY PROTEIN

Номер: US20190031837A1
Автор: CLARK Melissa M., Galizio Benjamin C., Randall Amy M.
Принадлежит:

The present disclosure is directed to rubber compositions comprising at least one rubber, at least one reinforcing carbon black filler, and a whey protein component. The whey protein component is in an amount sufficient to provide about 0.1 to about 10 phr whey protein. The present disclosure is also directed to methods of preparing such rubber compositions and to tire components containing the rubber compositions disclosed herein. 120-. (canceled)21. A rubber composition comprising:a. at least one rubber;b. at least one reinforcing carbon black filler in an amount of about 5 to about 200 phr; andc. a whey protein component in an amount sufficient to provide about 0.1 to about 10 phr whey protein.22. The rubber composition of claim 21 , wherein the whey protein component is in an amount sufficient to provide about 0.5 to about 5 phr whey protein.23. The rubber composition of claim 21 , wherein the whey protein component is at least one of acid whey powder claim 21 , reduced lactose whey claim 21 , reduced minerals whey claim 21 , sweet whey powder claim 21 , whey protein concentrate claim 21 , and whey protein isolate.24. A rubber composition that has been subjected to curing claim 21 , the rubber composition comprising:a. at least one rubber;b. at least one reinforcing carbon black filler in an amount of about 5 to about 200 phr;c. whey protein in an amount of about 0.1 to about 10 phr ; andd. a cure package.25. The rubber composition of claim 24 , wherein the amount of whey protein is about 0.5 to about 5 phr.26. The rubber composition according to claim 24 , wherein the whey protein meets at least one of the following:a. a majority of the protein chains in the whey protein have a molecular weight of greater than about 10 kDaltons;b. a majority of the proteins in the whey protein are a combination of alpha-lactalbumin and beta-lactoglobulin; orc. a degree of hydrolysis of less than about 50%.27. The rubber composition according to claim 24 , wherein the total ...

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Номер записи: 39
04-02-2021 дата публикации

CALCIUM CARBONATE COMPRISING COMPOSITION FOR ELASTOMERIC FILM PREPARATION

Номер: US20210032422A1
Автор: LAM Hon-Wan, NG Chiew-Sum
Принадлежит: Omya International AG

The present invention concerns a composition for the preparation of an elastomeric film. Furthermore, the present invention concerns the use of such a composition for the preparation of an elastomeric film, a method for preparing an elastomeric film and an elastomeric film produced by the inventive method. 1. A composition for the preparation of an elastomeric film comprising:a) at least one latex,b) at least one curing system, and [{'sub': '50', 'i) a first calcium carbonate-comprising material having a calcium carbonate content of at least 90 wt.-%, based on the total weight of the first calcium carbonate-comprising material, and having a weight median particle size dvalue in the range from 0.6 μm to 2 μm and a steepness factor of at least 40; and'}, {'sub': '50', 'ii) a second calcium carbonate-comprising material having a calcium carbonate content of at least 90 wt.-%, based on the total weight of the second calcium carbonate-comprising material, and having a weight median particle size dvalue in the range from 0.3 μm to 1 μm and a steepness factor of at least 20,'}], 'c) at least one filler composition, wherein the filler composition consists of a mixture of'}{'sub': '50', 'wherein the weight median particle size dvalue of the first and the second calcium carbonate-comprising material differs by 0.1 μm to 1.1 μm.'}2. The composition according to claim 1 , wherein the at least one latex of a) is a natural latex claim 1 , a synthetic latex or a mixture thereof.3. The composition according to claim 1 , wherein at least one stabilizer is present in the composition.4. The composition according to claim 1 , wherein the first and/or the second calcium carbonate-comprising material is/are selected from the group consisting of ground calcium carbonate.5. The composition according to claim 1 , wherein the first calcium carbonate-comprising material has{'sub': '50', 'i) a weight median particle size dvalue in the range from 0.6 μm to 2 μm, and/or'}{'sub': '98', 'ii) a top ...

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Номер записи: 40
04-02-2021 дата публикации

POLYMER BASED VULCANIZATION COMPOSITIONS AND METHOD FOR PREPARING THE COMPOSITIONS

Номер: US20210032440A1
Автор: Bosch Robert Michael, Williams Damian
Принадлежит:

This invention relates to a composition which is suitable for use in the vulcanization of the rubber. The composition is a non-aqueous water soluble polymer based composition comprising a cationic silicate component. The composition may further include a second cationic additive component which is desirable in a rubber vulcanization process. The invention further relates to a method for preparing these compositions. 1. A rubber vulcanization composition , wherein the composition is a polymer based solution comprising a cationic silicate component , and wherein the polymer is a water soluble polymer.2. The composition according to claim 1 , wherein the composition comprises a cationic additive component.3. The composition according to claim 2 , wherein the cationic additive component is a salt of a vulcanization accelerator.4. The composition according to claim 3 , wherein the vulcanization accelerator is selected from a group of accelerator classes including thiazoles claim 3 , dithiocarbamates claim 3 , dithiophosphates claim 3 , sulfenamides claim 3 , thiuram sulfides claim 3 , xanthates claim 3 , guanidines claim 3 , aldehyde amines claim 3 , or combinations thereof5. The composition according to claim 4 , wherein the vulcanization accelerator is selected from a group of accelerator classes including thiazoles claim 4 , dithiocarbamates claim 4 , dithiophosphates claim 4 , thiuram sulphides claim 4 , or combinations thereof.6. The composition according to claim 3 , wherein the salt of a vulcanization accelerator is a salt of 2-mercaptobezothiazole (MBT) claim 3 , zinc dibenzyldithiocarbamate (ZBEC) claim 3 , zinc dialkyldithiophosphate (ZBOP) claim 3 , tetrabenzyl thiuramdisulfide (TBzTD) claim 3 , Di-isopropyl xanthogen disulphide (DIXD) or polysulfide (AS100) claim 3 , or combinations thereof.7. The composition according to claim 3 , wherein the salt of the vulcanization accelerator is a sodium or potassium salt thereof.8. The composition according to claim 1 , ...

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Номер записи: 41
04-02-2021 дата публикации

Resin composition, prepreg including the same, laminated plate including the same, resin-coated metal foil including the same

Номер: US20210032462A1
Автор: Changbo SHIM, Hye Rim Park, Hyungsung MIN, Yongseon HWANG
Принадлежит: LG Chem Ltd

The present invention relates to a resin composition including a binder resin and an organic-inorganic composite filler, a prepreg including the same, a laminated plate including the same, and a resin-coated metal foil including the same.

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Номер записи: 42
01-02-2018 дата публикации

Compliant solid-state ionically conductive composite electrolytes and materials

Номер: US20180034096A1
Автор: Alexander Teran, Benjamin Rupert, Eduard Nasybulin, Joanna Burdynska, Saranya Venugopal, Simmi Kaur Uppal
Принадлежит: Blue Current Inc

Provided herein are ionically conductive solid-state compositions that include ionically conductive inorganic particles in a matrix of an organic material. The resulting composite material has high ionic conductivity and mechanical properties that facilitate processing. In particular embodiments, the ionically conductive solid-state compositions are compliant and may be cast as films. In some embodiments of the present invention, solid-state electrolytes including the ionically conductive solid-state compositions are provided. In some embodiments of the present invention, electrodes including the ionically conductive solid-state compositions are provided. The present invention further includes embodiments that are directed to methods of manufacturing the ionically conductive solid-state compositions and batteries incorporating the ionically conductive solid-state compositions.

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Номер записи: 43
11-02-2016 дата публикации

ADDUCT AND THERMOSETTING SURFACING FILM AND METHOD OF FORMING THE SAME

Номер: US20160039983A1
Автор: Akihiro Ito, Arakaki Augusto, Gutierrez Catalina, Kyle Paul, Wang Qiang
Принадлежит: Mitsubishi Rayon Carbon Fiber and Composites, Inc.

In various embodiments, the invention provides an in-situ adduct formed by reacting liquid, solid, and/or semi-solid epoxy resins with a di-carboxylic acid functionalized polymer. The adducting process at least doubles the viscosity of the mixture. A hot melt thermosetting surfacing film and composite formed using the adduct are also disclosed. Methods of preparing and using are also disclosed. 1. A resin composition for forming a thermosetting surfacing film , the composition comprising:a resin component comprising one or more epoxy resins selected from a liquid resin, a solid resin, a semi-solid resin and a combination thereof;from about 1% to about 20% (by weight of the total composition) of a carboxylic acid functionalized polymer having an average functionality of about 2 or more carboxylic acids prior to reacting said polymer with said resin component;from about 20% to about 60% (by weight of the total composition), with or without an organic surface treatment, of a filler material, comprising 2 or more fillers and/or pigments selected from silica, aluminum hydroxide, aluminum trihydrate, carbon black, titanium dioxide, calcium carbonate and a combination thereof,said resin composition having a viscosity of less than about 100 Pa·s at 71° C., and being free of solvent.2. The composition of claim 1 , wherein the one or more epoxy resins comprises:(A) from about 5% to about 60% (by weight of the total composition) of a resin fraction selected from a low viscosity liquid epoxy resin, and a combination of said low viscosity liquid epoxy resin with one or more resin selected from a solid resin, and a semi-solid;(B) from about 2% to about 40% (by weight of the total composition) of one or more solid bis-phenol A based epoxy resins having a softening point range from about 50° C. to about 130° C.; and(C) from about 1% to about 30% (by weight of the total composition) of solid epoxy phenol novolac or epoxy cresol novolac having a functionality of about 2.2 or more.3. ...

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Номер записи: 44
08-02-2018 дата публикации

PUMPABLE AND THERMALLY EXPANDABLE FILLER COMPOSITIONS

Номер: US20180037708A1
Автор: Davis Steve, Lin Geng, PROKO Blanka
Принадлежит: SIKA TECHNOLOGY AG

Pumpable thermally foaming filler compositions based on combinations of a liquid epoxy resin and a polyvinyl chloride resin and/or an acrylic resin powder. The pumpable filler materials provide the advantage that they can be applied as needed using conventional injection equipment and can be expanded to provide foam with good physical strength, high expansion and excellent adhesion on oiled metal substrates. Methods for filling closed spaces with the pumpable thermally foaming filler composition as well as vehicle parts are obtainable with the indicated methods. 1. A pumpable thermally foaming filler composition comprising:a liquid epoxy resin,a polyvinylchloride resin and/or acrylic resin powder, anda foaming agent.2. The pumpable thermally foaming filler composition of further comprising a synthetic rubber.3. The pumpable thermally foaming filler composition of further comprising one or more plasticizers.4. The pumpable thermally foaming filler composition of further comprising a curing agent for the liquid epoxy resin.5. The pumpable thermally foaming filler composition of further comprising one or more fillers.6. The pumpable thermally foaming filler composition of comprising10 to 20 wt.-% of a liquid epoxy resin, 10 to 20 wt.-% of polyvinylchloride resins and/or acrylic resin powders, 5 to 10 wt.-% of a synthetic rubber, 3 to 6 wt.-% of a foaming agent, 10 to 20 wt.-% of plasticizers, less than 1 wt.-% of a curing agent for the liquid epoxy resin and 25 to 35 wt.-% of fillers.7. The foamed filler obtainable by heating the pumpable thermally foaming filler composition of to a temperature above the activation temperature of the foaming agent.8. The filler of having an expansion of more than 300% of its unfoamed volume.9. A method comprising filling a closed space with the pumpable thermally foaming filler composition according to .10. A method for filling a closed space comprising the steps of{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'inserting a pumpable ...

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Номер записи: 45
07-02-2019 дата публикации

ELASTOMER COMPOUNDS

Номер: US20190040211A1
Автор: Chen Limeng, Choi Jaesun, Kyrlidis Agathagelos, Tassinari Oliver W.
Принадлежит:

Disclosed herein are elastomer compounds comprising: at least one elastomer that is resistant to heat for 70 h at 100° C. such that the at least one elastomer exhibits at least one of the following properties selected from: (a) a change in durometer hardness of no more than 15 points, (b) a change in tensile strength of no more than 40%, and (c) a change in ultimate elongation of no more than 40% The elastomer compound further comprises at least one graphene-based material present in an amount ranging from 0.01 phr to 30 phr relative to the at least one elastomer and at least one carbon black present in an amount ranging from 15 phr to 150 phr relative to the at least one elastomer. Also disclosed are methods of making such compounds, and articles comprising elastomer compounds. 1. An elastomer compound comprising:at least one elastomer that is resistant to heat for 70 h at 100° C. such that the at least one elastomer exhibits at least one of the following properties selected from:(a) a change in durometer hardness of no more than 15 points,(b) a change in tensile strength of no more than 40%, and(c) a change in ultimate elongation of no more than 40%;at least one graphene-based material present in an amount ranging from 0.01 phr to 30 phr relative to the at least one elastomer; andat least one carbon black present in an amount ranging from 15 phr to 150 phr relative to the at least one elastomer.2. The compound of claim 1 , wherein after being subjected to 100° C. for 70 h claim 1 , the at least one elastomer exhibits each of the properties (a) to (c).3. The compound of claim 1 , wherein the at least one elastomer is selected from rubbers and polymers comprising at least one monomer selected from 1 claim 1 ,3-butadiene claim 1 , styrene claim 1 , isoprene claim 1 , isobutylene claim 1 , 2 claim 1 ,3-dialkyl-1 claim 1 ,3-butadiene claim 1 , acrylonitrile claim 1 , ethylene claim 1 , and propylene claim 1 , where alkyl is selected from C1-C6 alkyls.46-. (canceled)7. ...

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Номер записи: 46
07-02-2019 дата публикации

SYSTEMS AND METHODS FOR TREATING ELASTOMERIC WORKPIECES

Номер: US20190040219A1
Автор: Iyer Subramanian, Thompson Andrew M.
Принадлежит:

A method of treating an elastomeric workpiece is provided. The method includes: (a) providing an elastomeric workpiece; and (b) altering a mechanical property of the elastomeric workpiece by fluorinating the elastomeric workpiece in a controlled environment. 1. A method of treating an elastomeric workpiece , the method comprising the steps of:(a) providing an elastomeric workpiece; and(b) altering a mechanical property of the elastomeric workpiece by fluorinating the elastomeric workpiece in a controlled environment.2. The method of wherein step (b) includes altering a tensile property of the elastomeric workpiece.3. The method of wherein step (b) includes altering an impact property of the elastomeric workpiece.4. The method of wherein step (b) includes altering a wear property of the elastomeric workpiece.5. The method of wherein step (b) includes altering an elastic modulus of the elastomeric workpiece.6. The method of wherein step (b) includes increasing an elastic modulus of the elastomeric workpiece by at least 25%.7. The method of wherein step (b) includes increasing an elastic modulus of the elastomeric workpiece by at least 50%.8. The method of wherein step (b) includes fluorinating the elastomeric workpiece in a chamber.9. The method of further comprising a step of preparing the chamber to have an anaerobic environment prior to step (b).10. The method of wherein step (b) includes fluorinating the elastomeric workpiece in the controlled environment using pure fluorine.11. The method of wherein step (b) includes fluorinating the elastomeric workpiece in the controlled environment using a gas mixture including fluorine mixed with an inert gas.12. The method of wherein step (b) includes fluorinating the elastomeric workpiece in the controlled environment using a gas mixture including fluorine mixed with at least one additional gas claim 1 , the at least one additional gas including at least one of nitrogen claim 1 , carbon dioxide claim 1 , and argon.13. A ...

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Номер записи: 47
07-02-2019 дата публикации

Nitrile rubber article

Номер: US20190040238A1
Автор: Chong Ban Wong, May Yin LEE
Принадлежит: Top Glove International Sdn Bhd

A latex formulation for preparing an accelerator-free nitrile rubber article comprising a mixture of at least one base polymer, a crosslinker, and a pH adjuster, wherein the crosslinker is an admixture of metal-based compound, wherein the metal-based compound is a trivalent metal-based compound, polyethylene glycol or derivatives of polyethylene glycol, wherein the polyethylene glycol or derivatives of polyethylene glycol have molecular weight ranging in between 200 Da to 20 000 Da, hydroxide salts, wherein the hydroxide salt is selected from the group consisting of potassium hydroxide, sodium hydroxide, ammonium hydroxide or mixtures thereof, and water, where the latex formulation includes polyethylene oxide, wherein the polyethylene oxide having molecular weight ranging in between 20 kDa to 1000 kDa.

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Номер записи: 48
19-02-2015 дата публикации

EPDM WIPER RUBBER

Номер: US20150047142A1
Автор: Gotzen Nicolaas
Принадлежит:

The present invention relates to a wiper rubber () for a windshield wiper, comprising a wiper rubber substructure () with a wiper lip section () and a reinforcement section (), the wiper rubber substructure () being uncoated and being formed from ethylene-propylene-diene rubber and/or ethylene-propylene rubber. In order to improve the wear resistance, wiping characteristics and wiping quality of the wiper rubber (), the surface of the wiper rubber substructure () at least in a partial region () of the wiper lip section () has been treated with ultraviolet radiation. The present invention further relates to a process for producing a wiper rubber, to a correspondingly produced wiper rubber and to a windshield wiper equipped therewith. 110124. A wiper rubber () for a windshield wiper , comprising a wiper rubber base () with a wiper lip section () and with a fixing section () ,{'b': '1', 'wherein the wiper rubber base () is formed from ethylene-propylene-diene rubber and/or ethylene-propylene rubber,'}{'b': '1', 'wherein the wiper rubber base () is uncoated, and'}{'b': 2', '2', '2', '1, 'i': c,', 'c, 'wherein at least in a subregion (′) of the wiper lip section () a surface of the wiper rubber base () has been treated with ultraviolet radiation.'}21011. The wiper rubber () as claimed in claim 1 , wherein the wiper rubber base () comprises at least one claim 1 , in particular multifunctional claim 1 , photoinitiator claim 1 , in particular where the at least one photoinitiator is a phenone or phosphine oxide claim 1 , in particular where the wiper rubber base () comprises from ≧1 pphr to ≦25 pphr of photoinitiators.3101566. The wiper rubber () as claimed in wherein the wiper rubber base () has been formed by coextrusion or multicomponent injection molding of at least two ethylene-propylene-diene rubber components and/or ethylene-propylene rubber components ( claim 2 , ) claim 2 , wherein one of the components () comprises the at least one photoinitiator.4101222222226c,ca ...

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Номер записи: 49
18-02-2016 дата публикации

OLIGOMER-GRAFTED NANOFILLERS AND ADVANCED COMPOSITE MATERIALS

Номер: US20160046771A1
Автор: Macosko Christopher W., PETKOVICH Nicholas D., Qian Yuqiang, Stein Andreas, Thibodeau Francis R.
Принадлежит:

Oligomer-grafted nanofiller compositions and composites including oligomer-grafted nanofillers are disclosed. An oligomer-grafted nanofiller composition for disposition in a polymer matrix, the polymeric matrix comprising polymers derived from a plurality of polymerizable units, can include a nanoparticle, one or more coupling groups bonded to the nanoparticle; and one or more oligomers bonded to the one or more coupling groups. In an embodiment the oligomer is derived from two or more polymerizable units, at least one polymerizable unit being at least substantially similar to at least one of the polymerizable units of the polymer matrix. In another embodiment the oligomer comprises two or more polymerizable units and improves dispersion, interfacial strength, or both dispersion and interfacial strength between the nano-particle and the polymer matrix. Composites and methods are also disclosed. 1106-. (canceled)107. A oligomer-grafted nanofiller composition for disposition in a polymer matrix , the polymeric matrix comprising polymers derived from a plurality of polymerizable units , the nanofiller composition comprising:a nanoparticle;one or more coupling groups bonded to the nanoparticle; and the nanoparticle comprises a graphene oxide nanoparticle, a graphite oxide nanoparticle, or a combination thereof;', 'the one or more oligomers comprises TMI isocyanate, an alkylamine, or a combination thereof; and', 'the plurality of polymerizable units of the polymer matrix comprise an unsaturated polyester, styrene, methyl methacrylate, or a combination thereof., 'one or more oligomers bonded to the one or more coupling groups, wherein the oligomers are derived from two or more polymerizable units, at least one polymerizable unit being at least substantially similar to at least one of the polymerizable units of the polymer matrix, wherein'}108. A oligomer-grafted nanofiller composition for disposition in a polymer matrix , the polymeric matrix comprising two or more ...

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Номер записи: 50
25-02-2016 дата публикации

Closed-cell foamed rubber-based resin object

Номер: US20160053066A1
Автор: Koichi Adachi, Koji YACHI
Принадлежит: Sekisui Chemical Co Ltd

A rubber-based resin closed-cell foam comprising a rubber-based resin having an acrylonitrile component content of 30% by mass or more, and carbon black contained in the rubber-based resin portion, the carbon black having a total nitrogen adsorption specific surface area of 600 to 2400 m 2 per 100 parts by mass of the rubber-based resin.

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Номер записи: 51
25-02-2021 дата публикации

PREPREG, COPPER-CLAD LAMINATE AND PRINTED CIRCUIT BOARD

Номер: US20210054158A1
Автор: Wang Hezhi, WANG Hongyuan, Zhang Yilan
Принадлежит:

A prepreg is a blend of a fiber reinforcement, a matrix resin and a filler. Based on 100 parts by mass of the prepreg, the fiber reinforcement is 20-60 parts by mass, the matrix resin is 20-65 parts by mass, and the filler is 10-40 parts by mass. The filler is a flame-retardant organic microsphere or a blend of the flame-retardant organic microsphere and an inorganic filler, and the particle size of the filler is preferably 0.1 microns to 15 microns. A copper-clad laminate and a printed circuit board are also disclosed. In various embodiments, the stability of material properties of the prepreg can be improved, the prepreg manufacturing process is simplified, the prepreg production efficiency is improved. Due to the high production efficiency of the prepreg, the manufacturing cost of the prepreg, the copper-clad laminate and the printed circuit board can be reduced. 1. A prepreg , wherein the prepreg is a blend of a fiber reinforcement , a matrix resin and a filler;wherein, based on 100 parts by mass of the prepreg, the fiber reinforcement has a content of 20-60 parts by mass, the matrix resin has a content of 20-65 parts by mass, and the filler has a content of 10-40 parts by mass;wherein, the filler is a flame-retardant organic microsphere or a blend of the flame-retardant organic microsphere and an inorganic filler, and the particle size of the filler is 0.1 microns to 15 microns.2. The prepreg according to claim 1 , wherein the particle size of the filler is 0.1 microns to 5 microns.3. The prepreg according to claim 1 , wherein the filler is a blend of the flame-retardant organic microsphere and the inorganic filler claim 1 , and the content of the flame-retardant organic microsphere is 20%-100% of the blend.4. The prepreg according to claim 3 , wherein the flame-retardant organic microsphere comprises an organic flame-retardant microsphere; the organic flame-retardant microsphere is insoluble in a toluene solvent claim 3 , an acetone solvent claim 3 , a ...

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Номер записи: 52
14-02-2019 дата публикации

Corrosion-protective jacket for electrode

Номер: US20190051995A1
Автор: Brien Todd Sirola, Caitlin Emma Morrissey Hughes, Christopher Paul Berni, Donald Brien Sirola
Принадлежит: Shore Acres Enterprises Inc

An electrical grounding assembly includes an electrically conductive metal grounding plate, and a corrosion-protective jacket enclosing the grounding plate. The jacket is electrically conductive and water impermeable. The electrical grounding assembly further includes an electrically conductive line having a first end in electrical contact with the grounding plate and enclosed in the jacket, and an opposed second end outside of the jacket for connection to a structure to be electrically grounded.

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Номер записи: 53
03-03-2016 дата публикации

Antimicrobial examination gloves

Номер: US20160058921A1
Автор: Gros Robert Timothy
Принадлежит:

A method of manufacturing nitrile rubber latex medical examination gloves during which (a) the glove formers are dipped into a coagulant solution containing divalent calcium cations and calcium nitrate particles, to which has been added a composition comprising Alcohol ethoxylate, Amine oxide, Ethylenediaminetetracetic acid, Glutaraldehyde, Chlorhexidine di-gluconate, Chlorhexidine di-hydrochloride, Salisept, Titanium Dioxide, nano particle silver; and during which (b) the coated glove formers are then dipped into a nitrile rubber latex dispersion to which has been added a composition comprising Alcohol ethoxylate, Amine oxide, Lactic acid, Ethylenedi-aminetetracetic acid, Glutaraldehyde, Salisept; and during which (c) the nitrile rubber latex gloves are finally placed in to packaging utilising a clear coat varnish that it is impregnated with a phenolic chlorine compound, micronised nanosilver colloid, and a quaternary compound. 1. A method of manufacturing nitrile rubber latex medical examination gloves during which (a) the glove formers are dipped into a coagulant solution containing divalent calcium cations and calcium nitrate particles , to which has been added a composition comprising 1% to 3% Alcohol ethoxylate , 0.1% to 0.5% Amine oxide , 0.1% to 0.5% Ethylenediaminetetracetic acid , 0.1% to 0.5% Glutaraldehyde , 0.5% to 1% Chlorhexidine di-gluconate , 0.5% and 1% Chlorhexidine di-hydrochloride , 0.1% to 0.25% Salisept , less than 0.2% Titanium Dioxide , less than 0.2% nano particle silver; and during which (b) the coated glove formers are then dipped into a nitrile rubber latex dispersion to which has been added a composition comprising 1% to 3% Alcohol ethoxylate , 0.1% to 0.5% Amine oxide , 0.1% to 0.3% Lactic acid , 0.1% to 0.5% Ethylenediaminetetracetic acid , 0.1% to 0.5% Glutaraldehyde , 0.1% to 0.25% Salisept; and during which (c) the nitrile rubber latex gloves are finally placed in to packaging utilising a clear coat varnish that it is impregnated ...

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Номер записи: 54
10-03-2022 дата публикации

DIELECTRIC HEATING OF FOAMABLE COMPOSITIONS

Номер: US20220073787A1
Автор: Getty Kris, Huang Tianjian, Kriegl Alexis, McLeod Bradley, Waski Daniel
Принадлежит:

A method for dielectrically heating foamable composition to foam and set the composition is described. In particular, radio frequency (RF) heating is used to heat the foamable composition to provide insulation in the manufacture of an article. 1. A method for making an article comprising a substrate and a foamed composition comprising:(a) preparing a foamable composition comprising (i) a water-based polymer in water, (ii) a plurality of expandable microspheres having an initial expansion temperature range of from about 80° C. to about 110° C., and a maximum expansion temperature range of from about 90° C. to about 150° C., and (iii) optionally, an additive;(b) applying the foamable composition onto the substrate;(c) exposing the foamable composition to a dielectric heating for a time sufficient to induce expansion of the plurality of microspheres, thereby forming the foamed composition on the substrate,wherein the steps (b) and (c) are completed in less than one minute,wherein the foamed composition has a thickness of about 0.125-0.135 inches, and less than 10% of the substrate comprises wrinkles following formation of the foamed composition on the substrate.2. The method according to claim 1 , further comprising step (b2) claim 1 , which occurs after step (b) and prior to step (c) claim 1 , wherein step (b2) comprises applying a second substrate onto the foamable composition claim 1 , whereby the foamable composition is sandwich between the substrate and the second substrate.3. The method according to claim 1 , further comprising step (d) after step (c) claim 1 , wherein step (d) comprises exposing the article to direct heating.4. The method according to claim 1 , wherein the foamable composition has a water content greater than 20 wt % at step (b).5. The method according to claim 1 , wherein the substrate is selected from the group consisting of fibreboards claim 1 , chipboards claim 1 , corrugated boards claim 1 , corrugated mediums claim 1 , solid bleached ...

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Номер записи: 55
10-03-2022 дата публикации

Thermally conductive resin sheet

Номер: US20220073805A1
Автор: Yuuki HOSHIYAMA
Принадлежит: Sekisui Chemical Co Ltd

The thermally conductive resin sheet of the present invention has a heat conductivity of 7 W/m·K or more, a 30% compressive strength of 1500 kPa or less, and a rate of change of the 30% compressive strength of 30% or less after a heat resistance test in which the thermally conductive resin sheet is heated for 1000 hours at 150° C. According to the present invention, a thermally conductive resin sheet with good heat conductive property and flexibility and long-term stability of physical properties such as not becoming hardened over time can be provided.

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Номер записи: 56
21-02-2019 дата публикации

METHOD FOR MANUFACTURING POLYMER LATEX

Номер: US20190055367A1
Автор: AIHARA Shunjin, ISHIBA Masatoshi, KODEMURA Junji
Принадлежит: ZEON CORPORATION

A method for producing a polymer latex, including an emulsification step of mixing a polymer solution obtained by dissolution of synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer in an organic solvent, with an aqueous solution including 0.1 to 30 parts by weight of a rosinate based on 100 parts by weight in total of the synthetic polyisoprene and the styrene-isoprene-styrene block copolymer, and emulsifying the resultant in water to thereby obtain an emulsified liquid, a solvent removal step of removing the organic solvent in the emulsified liquid, and a concentration step of concentrating the emulsified liquid from which the organic solvent is removed, and also adjusting the content rate of the rosinate in the emulsified liquid after concentration, in the range of 0.1 to 3 parts by weight based on 100 parts by weight in total of the synthetic polyisoprene and the styrene-isoprene-styrene block copolymer in the emulsified liquid. 1. A method for producing a polymer latex , comprising:an emulsification step of mixing a polymer solution obtained by dissolution of synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer in an organic solvent, with an aqueous solution comprising 0.1 to 30 parts by weight of a rosinate based on 100 parts by weight in total of the synthetic polyisoprene and the styrene-isoprene-styrene block copolymer, and emulsifying the resultant in water to thereby obtain an emulsified liquid;a solvent removal step of removing the organic solvent in the emulsified liquid; anda concentration step of concentrating the emulsified liquid from which the organic solvent is removed, and also adjusting a content rate of the rosinate in the emulsified liquid in the range of 0.1 to 3 parts by weight based on 100 parts by weight in total of the synthetic polyisoprene and the styrene-isoprene-styrene block copolymer in the emulsified liquid.2. The method for producing a polymer latex according to claim 1 , wherein the ...

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Номер записи: 57
01-03-2018 дата публикации

Method for producing rubber composition for tire

Номер: US20180057667A1
Автор: Takanori Tsuji
Принадлежит: Bridgestone Corp

In order to allow a braking property on wet roads and a wear resistance to be compatible, provided is a method for producing a rubber composition passing through a stage including a kneading step in which kneaded are 100 parts by mass of a rubber component (A) containing 60% by mass or more of a styrene-butadiene copolymer rubber, 30 to 80 parts by mass of silica (B), 5 to 14 parts by mass of a silane coupling agent (C), 3 to 14 parts by mass of a thermoplastic resin (D), and thiourea compound (E), and including subsequently a kneading step in which a vulcanizing agent (F) is further added and kneaded.

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Номер записи: 58
04-03-2021 дата публикации

RUBBER COMPOSITIONS WITH DISSAGREGATED CARBON NANOTUBES

Номер: US20210061973A1
Автор: CHOUVEL CHRISTOPHE, PAPPAS Christopher
Принадлежит:

Described are articles including treads and/or other tire components that are formed at least in part by rubber compositions having solid agglomerated material comprising disaggregated carbon nanotubes. Such rubber compositions include a diene rubber component and a solid agglomerated material comprising disaggregated carbon nanotubes that consist of a continuous network of carbon nanotubes that contains 1) voids and 2) aggregates of carbon nanotubes having a mean size dof less than 5 μm, the voids and the aggregates together in an amount that is less than 60% of a predetermined surface area, as determined by electron microscopy imagery analysis, the remainder being the disaggregated carbon nanotubes in the continuous network that do not comprise a clearly defined shape. 1. A rubber composition based upon a cross-linkable rubber composition , the cross-linkable rubber composition comprising , in parts per 100 parts by weight of rubber:a diene rubber;{'sub': '50', 'a solid agglomerated material comprising disaggregated carbon nanotubes consisting of a continuous network of carbon nanotubes, the continuous network comprising 1) voids and 2) aggregates of carbon nanotubes having a dmean size of less than 5 μm, the voids and the aggregates together being in an amount that is less than 60% of a predetermined surface area, such percentage as determined by electron microscopy imagery analysis, the remainder being the disaggregated carbon nanotubes in the continuous network that do not comprise a clearly defined shape and being in an amount that is at least 40% of the predetermined surface area, wherein the disaggregated carbon nanotubes of the continuous network are oxidized;'}a cure system.2. The rubber composition of claim 1 , wherein the cross-linkable rubber composition comprises between 1 phr and 75 phr of the solid agglomerated material.3. The rubber composition of claim 1 , wherein the diene rubber is a highly unsaturated rubber selected from natural rubber claim 1 ...

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Номер записи: 59
10-03-2016 дата публикации

Fragrant gel polymer with solvents

Номер: US20160068782A1
Автор: Dobler Sven, Tran Long
Принадлежит:

The fragrant gel polymer system is a process where a complete fragrance formulation remains whole and is then blended with either a polymer or a cross-linking agent. The non-fragrance carrying polymer is then liquefied and made homogenous with a solvent, including esters. The solvents modify viscosity and ease the mixing of the non-fragrance carrying polymer with the fragrance carrying polymer. The method also provides surfactants and wetting agents for further integration and mixing of the fragrance oils with either the polymer or the cross-linking agent during the steps of the process. Mixing of the fragrance carrying polymer and the non-fragrance polymer results in a gel that sets in less time and with less syneresis than existing processes. 1. A process for preparing a fragrant gel comprising the steps of:blending a liquid mixture A including a fragrance oil and one of a polymer or a cross linking agent;said liquid mixture A comprising at least 5%-95% by weight of the fragrant gel;wherein said polymers derived from one of maleinized butadiene, isoprene or chloroprene, and wherein said polymer comprising at least 5%-50% by weight of the liquid mixture A;wherein said cross linking agent is derived from one of amine or polyetheramine;blending a liquid mixture B including a polymer or a cross linking agent omitted from mixture A and a solvent, said mixture B being homogeneous and without any of said fragrance oil, said liquid mixture B comprising at least 10%-90% by weight of the fragrance gel, said mixture including the polymer or the cross linking agent omitted from mixture A, and a solvent, said mixture B being homogeneous;wherein said solvent is an ester, said solvent modifying the viscosity of mixture B, to between about 10 Pa·s to 200 Pa·s, and functions as a plastifier to provide a fruit smell to the fragrance oil of mixture A when combined, said ester including one of di-isoheptyl phthalate, 2-tert-butylcyclohexyl acetate, diethyl malonate, ethyl benzoate, ...

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Номер записи: 60
09-03-2017 дата публикации

CO-AGGLOMERATED LATEX POLYMER DISPERSIONS AND METHODS OF PREPARING AND USING SAME

Номер: US20170066847A1
Автор: Avramidis Kostas S., Takamura Koichi
Принадлежит: BASF SE

Co-agglomerated dispersions and methods for their preparation are described herein. The co-agglomerated dispersions are prepared by co-agglomerating an anionic polymer dispersion and inert particles. The polymers for use in the co-agglomerated dispersions are derived from one or more monomers including at least one conjugated diene monomer. The inert particles have a particle size of less than 2 μm. Also described herein is an aqueous dispersion including co-agglomerated particles formed from at least one polymer and at least one inert material. Further described herein are foamed polymers, latex-based adhesives, waterproofing membranes, sound absorbing coatings, and methods for their preparation and use. 125-. (canceled)26. An aqueous dispersion comprising co-agglomerated particles formed of at least one polymer and at least one inert material , said co-agglomerated particles having a particle size of 100 nm to 5 μm and said polymer derived from one or more monomers including at least one conjugated diene monomer.27. The aqueous dispersion of claim 26 , having a surface tension of less than 45 mN/m.28. The aqueous dispersion of claim 26 , wherein the solids content is greater than 50%.29. The aqueous dispersion of claim 26 , wherein the solids content is greater than 60%.30. The aqueous dispersion of claim 29 , wherein the viscosity is less than 1 Pa·s at 20° C.31. The aqueous dispersion of claim 26 , wherein said at least one inert material includes at least one inorganic material.32. The aqueous dispersion of claim 31 , wherein said inorganic material includes one or more clays.33. The aqueous dispersion of claim 31 , wherein said inorganic material includes one or more particles having platelet structures.34. The aqueous dispersion of claim 31 , wherein said inorganic material includes material selected from the group consisting of kaolin claim 31 , mica claim 31 , bentonite claim 31 , natural and synthetic hectorite claim 31 , ettringite claim 31 , calcium ...

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Номер записи: 61
09-03-2017 дата публикации

Rubber Composition for an Airless Tire Tube and Method for Producing the Same

Номер: US20170066895A1
Автор: Dinh Minh Hung
Принадлежит: Peram LLC

A rubber composition is provided and includes a first elastomer, a second elastomer, carbon black, a plasticizer, a blowing agent, and a filler. The first elastomer is provided in a range of 15.97-34.71 wt %, while the second elastomer is provided in a range of of 8.37-16.22 wt %. Carbon black is provided in the range of 13.29-23.00 wt %. The plasticizer is provided in a range of 13.71-20.02 wt %, and the blowing agent is provided in a range of 3.22-5.11 wt %. The filler is provided to complete the composition. 1. A rubber composition for an airless tire tube , comprising:14.00-15.00 wt % of a first elastomer;14.00-15.00 wt % of a second elastomer;11.00-12.00 wt % of a third elastomer;20.00-23.00 wt % of carbon black;13.70-20.10 wt % of a plasticizer;4.20-4.40 wt % of a blowing agent; anda balance of a filler and incidental impurities.2. The rubber composition according to claim 1 , wherein the first elastomer is a saturated or unsaturated rubber.3. The rubber composition according to claim 2 , wherein the second elastomer is a saturated or unsaturated rubber.4. The rubber composition according to claim 3 , wherein the third elastomer is a saturated or unsaturated rubber.5. The rubber composition according to claim 4 , wherein the first elastomer and the second elastomer are selected from a group of elastomers claim 4 , consisting of: an ethylene propylene diene monomer rubber (EPDM) claim 4 , a natural polyisoprene rubber claim 4 , a chloroprene rubber (CR) claim 4 , a styrene-butadiene rubber (SBR) claim 4 , and a nitrile rubber (NBR).6. The rubber composition according to claim 1 , wherein the first elastomer is an ethylene propylene diene monomer rubber (EPDM).7. The rubber composition according to claim 6 , wherein the second elastomer is a natural polyisoprene rubber.8. The rubber composition according to claim 7 , wherein the third elastomer is a high styrene rubber.9. The rubber composition according to claim 1 , wherein the first elastomer is 14.24-14.32 wt ...

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Номер записи: 62
24-03-2022 дата публикации

SELF-DISINFECTING GLOVE COMPOSITION AND METHOD OF PRODUCTION THEREOF

Номер: US20220087341A1
Автор: REDDY L.DHARIKA, REDDY L.DHRUV SAI, SHAIK ALEESHA, SHAIK ANITHA
Принадлежит:

A method for manufacturing a self-disinfecting glove, the method comprising dissolving an elastomer in a solvent to form a solution, wherein the elastomer is selected from the group consisting of synthetic rubber, natural rubber, and nitrile. Adding of a photosensitizer to the elastomer solvent solution and evaporating the solvent solution to form a film, wherein the photosensitizer is selected from the group consisting of methylene blue, hypericin and titanium dioxide. Next hot pressing of the film above elastomer's melting point to form a sheet. Finally cutting, stacking and hot pressing the sheet again to enable even spread of the photosensitizer throughout the sheet. 1. A method for manufacturing a self-disinfecting glove composition , the method comprising:dissolving an elastomer in a solvent to form a solution;adding of a photosensitizer to the elastomer solvent solution and evaporating the solvent solution to form a film;hot pressing of the film above the elastomer's melting point to form a sheet; andcutting, staking and hot pressing the sheet again to enable even spread of the photosensitizer molecules throughout the sheet.2. The method as claimed in claim 1 , wherein the solvent comprises of distilled water.3. The method as claimed in claim 1 , wherein the elastomer is selected from the group consisting of nitrile claim 1 , natural rubber and synthetic rubber.4. The method as claimed in claim 1 , wherein the preferable elastomer is nitrile.5. The method as claimed in claim 1 , wherein the photosentizers molecules are selected from group consisting of methylene blue claim 1 , hypericin and titanium dioxide.6. The method as claimed in claim 1 , wherein for evaporating the elastomer solvent solution is spread over large surface area and applied heat as evenly as possible.7. The method as claimed in claim 1 , wherein the hot pressing is carried out for a time-period 10 mins claim 1 , temperature in the range of 100° C. to 108° C. and at a pressure is maintained ...

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Номер записи: 63
24-03-2022 дата публикации

RUBBER FOAM FOR SHOE SOLE

Номер: US20220087361A1
Автор: HIGUCHI Naoya, MORITA Akira, SATO Mitsuru
Принадлежит:

A rubber foam for a shoe sole is composed of a rubber composition for foaming containing a rubber composition and a foaming agent, the rubber foam having (i) a loss factor tan δ (24° C.) at a frequency of 10 Hz and 24° C. that is 0.07 or less and (ii) an absolute value of a slope of a change in loss factor tan δ with temperature between a loss factor tan δ (−15° C.) at the frequency of 10 Hz and −15° C. and the loss factor tan δ (24° C.) at the frequency of 10 Hz and 24° C., as calculated by the following equation, that is 0.002 or less: 1. A rubber foam for a shoe sole , the rubber foam being composed of a rubber composition for foaming containing a rubber composition and a foaming agent , whereina loss factor tan δ (24° C.) at a frequency of 10 Hz and 24° C. is 0.07 or less, and [{'br': None, '[Math 1]'}, {'br': None, 'the absolute value of the slope of the change in tan δ with temperature=|[tan δ (−15° C.)−tan δ (24° C.)]/39 \u2003\u2003(1).'}], 'an absolute value of a slope of a change in loss factor tan δ with temperature between a loss factor tan δ (−15° C.) at the frequency of 10 Hz and −15° C. and the loss factor tan δ (24° C.) at the frequency of 10 Hz and 24° C., as calculated by the following equation (1), is 0.002 or less2. The rubber foam for a shoe sole according to claim 1 , whereinthe loss factor tan δ (−15° C.) at the frequency of 10 Hz and −15° C. is 0.12 or less.3. The rubber foam for a shoe sole according to claim 1 , whereinan absolute value of a difference between a storage modulus E′ (24° C.) at the frequency of 10 Hz and 24° C. and a storage modulus E′ (−15° C.) at the frequency of 10 Hz and −15° C. is 0.30 MPa or less.4. The rubber foam for a shoe sole according to claim 1 , whereinthe rubber composition is composed of at least one selected from the group consisting of natural rubber, isoprene rubber, butadiene rubber, and styrene-butadiene rubber.5. The rubber foam for a shoe sole according to claim 1 , further containing a resin component ...

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Номер записи: 64
17-03-2016 дата публикации

COMPOSITIONS, CONTAINING THERMOPLASTICS BASED ON POLYVINYL CHLORIDE AND CONTAINING CROSS-LINKED NBR MICROGELS MODIFIED WITH HYDROXYL GROUPS

Номер: US20160075867A1
Автор: KLEINKNECHT Harald, WAWRZINSKI Lars, ZISER Torsten
Принадлежит:

The present invention relates to a composition obtainable by mixing to incorporate at least one microgel (B) that has been crosslinked by means of free-radical generators photochemical by using a wavelength>0.1 μm and/or thermally and that contains hydroxy groups and that is based on polybutadiene-acrylonitrile copolymers (NBR) into polyvinyl chloride (PVC) in an extruder, to processes for production thereof and to use thereof for reproduction of transparent thermoplastically processable moulded items, and also to moulded items produced from the said compositions. 1. A composition comprising:at least one thermoplastic based on polyvinyl chloride, andat least one crosslinked microgel based on polybutadiene-acrylonitrile copolymers.3. The composition according to claim 1 , wherein the median particle size dof the primary particles of the microgel is 5 to 500 nm.4. The composition according to claim 1 , wherein the microgels have an acrylonitrile content of 10% to 80%.5. The composition according to claim 1 , wherein the microgels comprise at least about 70% by weight of fractions insoluble in toluene at 23° C.8. The composition according to claim 1 , wherein the swelling index of the microgels in toluene at 23° C. is less than about 80.9. The composition according to claim 1 , wherein the glass transition temperatures of the microgels are from −60° C. to +50° C.8. The composition according to claim 1 , wherein the breadth of the glass transition range of the microgels is greater than about 5° C.9. The composition according to claim 1 , wherein the microgels are thermally cross-linked using organic peroxides claim 1 , and/or organic azo compounds claim 1 , and/or di- and polymercapto compounds claim 1 , as thermal free-radical initiator.10. The composition according to claim 1 , wherein the microgel is cross-linked using trimethylolpropane trimethacrylate (TMPTMA).11. The composition according to claim 1 , the composition has a thermoplastic/microgel ratio by weight of ...

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Номер записи: 65
05-03-2020 дата публикации

Rubber composition, vulcanized rubber, tire, studless tire

Номер: US20200070578A1
Автор: Masahiro Kawashima
Принадлежит: Bridgestone Corp

The rubber composition of the present invention contains a rubber component and a short fibrous resin D 1 having a ratio A/B of larger than 1, wherein A is a length of a cross section perpendicular to a long axis direction in a long diameter direction thereof and B is a length of the cross section perpendicular to the long axis direction in a short diameter direction thereof. A vulcanized rubber having a large water absorbing force can be obtained from the rubber composition. In addition, the present invention provides a vulcanized rubber having a water absorbing force, a tire having excellent on-ice performance, and a studless having excellent on-ice performance.

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Номер записи: 66
07-03-2019 дата публикации

LATEX COMPOSITION, PRODUCTION METHOD THEREFOR, COMPOSITE MATERIAL, AND CONDUCTIVE FORMED PRODUCT

Номер: US20190074102A1
Автор: Hoang The Ban, SHIGETA Masahiro, UEJIMA Mitsugu
Принадлежит: ZEON CORPORATION

Provided is a latex composition consists of a latex including a polymer having a tetrahydrofuran-insoluble component content of at least 5 mass % and no greater than 75 mass %; carbon nanotubes having an average diameter Av and a diameter distribution 3σ satisfying a relationship 0.60>3σ/Av>0.20; and an additive selected from the group consisting of a dispersant, a cross-linking agent, a plasticizer, an antioxidant, a heat stabilizer, a light stabilizer, an ultraviolet absorber, a pigment, a colorant, a foaming agent, a flame retardant, a lubricant, a softener, a tackifier, a mold release agent, a deodorant, and a perfume. The carbon nanotubes have a specific surface area of at least 600 m/g, and in a Raman spectrum of the carbon nanotubes, a ratio of G band peak intensity relative to D band peak intensity (G/D ratio) is at least 1 and no greater than 20. 1. A latex composition consisting of:a latex including a polymer having a tetrahydrofuran-insoluble component content of at least 5 mass % and no greater than 75 mass %;carbon nanotubes having an average diameter Av and a diameter distribution 3σ satisfying a relationship 0.60 >3σ/Av>0.20; andan additive selected from the group consisting of a dispersant, a cross-linking agent, a plasticizer, an antioxidant, a heat stabilizer, a light stabilizer, an ultraviolet absorber, a pigment, a colorant, a foaming agent, a flame retardant, a lubricant, a softener, a tackifier, a mold release agent, a deodorant, and a perfume, wherein{'sup': '2', 'the carbon nanotubes have a specific surface area of at least 600 m/g, and'}in a Raman spectrum of the carbon nanotubes, a ratio of G band peak intensity relative to D band peak intensity (G/D ratio) is at least 1 and no greater than 20.2. The latex composition of claim 1 , whereinthe carbon nanotubes constitute no greater than 10 parts by mass per 100 parts by mass of the polymer.3. The latex composition of claim 1 , whereinthe polymer is a conjugated diene rubber.4. A latex ...

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Номер записи: 67
22-03-2018 дата публикации

Method For Producing A Masterbatch Of Synthetic Diene Elastomer And Carbonated Filler

Номер: US20180079874A1
Автор: Eloy Marie, LALLET François
Принадлежит:

A method for preparing a masterbatch of synthetic elastomer and of carbon-based filler, which comprises the following steps: preparing an aqueous dispersion of carbon-based filler having a zeta potential with the opposite sign to that of an anionic or cationic synthetic elastomer latex, the difference between the potentials of the anionic or cationic elastomer latex and the aqueous dispersion of carbon-based filler being such that the absolute value thereof is greater than or equal to 20 mV, bringing together, and mixing, the anionic or cationic synthetic elastomer latex and the aqueous dispersion of carbon-based filler to obtain a coagulum, recovering the coagulum, and drying the recovered coagulum in order to obtain the masterbatch. 1. A method for preparing a masterbatch of synthetic elastomer and of carbon-based filler , which comprises the following steps:preparing an aqueous dispersion of carbon-based filler having a zeta potential with the opposite sign to that of an anionic or cationic synthetic elastomer latex, the difference between the potentials of the anionic or cationic elastomer latex and the aqueous dispersion of carbon-based filler being such that the absolute value thereof is greater than or equal to 20 mV;bringing together, and mixing, the anionic or cationic synthetic elastomer latex and the aqueous dispersion of carbon-based filler to obtain a coagulum;recovering the coagulum; anddrying the recovered coagulum in order to obtain the masterbatch.2. The method according to claim 1 , wherein the synthetic elastomer is a synthetic diene elastomer.3. The method according to claim 1 , wherein the difference between the zeta potentials of the anionic or cationic elastomer latex and of the aqueous dispersion of carbon-based filler has an absolute value which is greater than or equal to 30 mV.4. The method according to claim 1 , wherein the aqueous dispersion of carbon-based filler contains a surfactant with the opposite sign to that of the synthetic ...

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Номер записи: 68
22-03-2018 дата публикации

PULVERULENT MIXTURES CONTAINING LOW-EMISSION NITRILE RUBBERS

Номер: US20180079886A1
Автор: BRANDAU Sven, Kaiser Andreas, STABER ROBERT
Принадлежит: ARLANXEO DEUTSCHLAND GMBH

Pulverulent mixtures containing at least one nitrite rubber and at least one release agent, which are characterized by a particular average particle diameter, are provided. These mixtures have particularly low emissions and are outstandingly suitable for producing materials and components for indoor applications. 2. The pulverulent mixture according to claim 1 , wherein particles of the pulverulent mixture have an average particle diameter Dof 0.05 to 3 mm claim 1 , particularly preferably in the range from 0.1 mm to 2 mm and in particular in the range from 0.2 mm to 1.5 mm.3. The pulverulent mixture according to claim 1 , wherein the particles have an average particle diameter Dof 0.01 to 2 mm claim 1 , preferably 0.04 mm to 1 mm claim 1 , particularly preferably 0.06 to 0.75 mm claim 1 , and in particular 0.08 mm to 0.12 mm.4. The pulverulent mixture according to claim 1 , wherein the nitrile rubber has an emission ratio E according to the general formula (I) of less than or equal to 0.22 mg/(kg*Mooney units) and particularly preferably less than or equal to 0.20 mg/(kg*Mooney units).5. The pulverulent mixture according to claim 1 , wherein the nitrile rubber component comprises either repeating units of acrylonitrile and 1 claim 1 ,3-butadiene claim 1 , preferably exclusively repeating units of acrylonstrile and 1 claim 1 ,3-butadiene claim 1 , or repeating units of acrylonitrile claim 1 , 1 claim 1 ,3-butadiene and one or more further copolymerizable monomers claim 1 , preferably repeating units of acrylonitrile claim 1 , 1 claim 1 ,3-butadiene and (I) one or more α claim 1 ,β-unsaturated monocarboxylic or dicarboxylic acids claim 1 , esters or amides thereof claim 1 , in particular repeating units of an alkyl ester of an α claim 1 ,β-unsaturated carboxylic acid claim 1 , very particularly preferably of methyl (meth)acrylate claim 1 , ethyl (meth)acrylate claim 1 , propyl (meth)acrylate claim 1 , n-butyl (meth)acrylate claim 1 , t-butyl (meth)acrylate claim 1 , ...

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Номер записи: 69
24-03-2016 дата публикации

FUNCTIONALIZED DIENE RUBBERS

Номер: US20160083531A1
Автор: GROSS Thomas, STEINHAUSER Norbert
Принадлежит:

The present invention relates to functionalised diene rubbers and their production, to rubber mixtures, comprising these functionalised diene rubbers, and to their use for the production of rubber vulcanisates, which serve in particular for the production of highly reinforced rubber mouldings. Particular preference is given to the use in the production of tyres which have particularly low rolling resistance, and particularly high wet slip resistance and abrasion resistance. 1. A process for the production of functionalized diene rubber , the process comprising:polymerizing monomers comprising dienes, in a solvent to produce diene polymer in the solvent; andcontacting the diene polymer in the solvent, in situ, with a free-radical initiator and at least one hydroxymercaptan comprising at least two —OH functional groups to produce hydroxyl-functionalized diene rubber.3. The process according to claim 2 , wherein: photoinitiators and visible or UV light; and', 'chemical initiators selected from peroxides, azo compounds and benzopinacol silyl ethers; and, 'the free-radical initiator comprises at least one ofthe solvent comprises at least one hydrocarbon solvent selected from paraffinic hydrocarbons and aromatic hydrocarbons.4. The process according to claim 2 , wherein the monomers comprise diene monomers and vinylaromatic monomers and the diene rubber comprises repeat units based on the diene monomers and the vinylaromatic monomers.5. The process according to claim 4 , wherein the polymerizing is at a temperature of 40° C. to 130° C. and comprises at least one of anionic solution polymerization and coordination catalyst polymerization.6. The process according to claim 4 , wherein:the diene monomers comprise at least one of 1,3-butadiene, isoprene, 1,3-pentadiene, 2,3-dimethylbutadiene, 1-phenyl-1,3-butadiene, and 1,3-hexadiene;the vinylaromatic monomers comprise at least one of styrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, p-tert-butylstyrene, α- ...

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Номер записи: 70
31-03-2022 дата публикации

POLYMER COMPOSITION, CROSSLINKED BODY, AND TIRE

Номер: US20220098380A1
Автор: FUKUMOTO Takato, HAYAKAWA Toshiyuki, KIKUCHI Toshimitsu, SAKAGAMI Yuto, Sano Takuya, SENGA Hirofumi
Принадлежит: JSR Corporation

A polymer composition includes a conjugated diene polymer (A) and a compound (B). The compound (B) is at least one compound selected from the group consisting of a polysiloxane compound and a fluorine-containing compound. The conjugated diene polymer (A) contains, when the composition ratios (molar ratios) in the polymer of the structural units represented by formulas (1) to (4) are p, q, r, and s, respectively, a polymer (A-1) satisfying formula (i). 2. The polymer composition according to claim 1 , wherein a proportion of the polymer (A-1) in the conjugated diene polymer (A) is 50% by mass or more.3. The polymer composition according to claim 1 , wherein the polymer (A-1) has a glass transition temperature of −40° C. or lower.4. The polymer composition according to claim 1 , wherein the polymer (A-1) has a weight average molecular weight (Mw) in terms of polystyrene measured by a gel permeation chromatograph of 1.0×10to 2.0×10.5. The polymer composition according to claim 1 , wherein a content of the compound (B) is 0.01 to 5% by mass relative to the total composition.6. The polymer composition according to claim 1 , further comprising at least one selected from the group consisting of a foaming agent claim 1 , heat-expandable microcapsules claim 1 , and heat-expandable graphite.7. The polymer composition according to claim 1 , further comprising a cross-linking agent.8. The polymer composition according to claim 1 , further comprising an inorganic filler different from heat-expandable graphite.9. A crosslinked body obtained by using the polymer composition according to .10. A tire in which one or both of a tread and a sidewall are formed using the polymer composition according to . The present application is based on Japanese Patent Application No. 2020-166483, filed Sep. 30, 2020, the contents of which are incorporated herein by reference in their entirety.The present disclosure relates to a polymer composition, a crosslinked body, and a tire.Conjugated diene ...

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Номер записи: 71
14-03-2019 дата публикации

PREPARATION METHOD OF SEPARATOR, SEPARATOR FORMED THEREFROM, AND ELECTROCHEMICAL DEVICE CONTAINING THE SAME

Номер: US20190081306A1
Автор: Jin Sun-Mi, Lee Joo-Sung
Принадлежит:

A preparation method of a separator according to the present disclosure includes preparing an aqueous slurry including inorganic particles, a binder polymer, and an aqueous medium, and coating the aqueous slurry on at least one surface of a porous polymer substrate to form an organic-inorganic composite porous coating layer, wherein capillary number of the aqueous slurry has a range between 0.3 and 65. 1. A preparation method of a separator , comprising:preparing an aqueous slurry comprising inorganic particles, a binder polymer, and an aqueous medium; andcoating the aqueous slurry on at least one surface of a polyolefin-based porous polymer film substrate to form an organic-inorganic composite porous coating layer,wherein a thickness of the porous polymer substrate is from 5 μm to 50 μm, a pore size of the porous polymer substrate is from 0.01 μm to 50 μm and a porosity of the porous polymer substrate is from 10% to 95%.wherein capillary number of the aqueous slurry is from 0.3 to 65, {'br': None, 'i': 'U', 'Capillary number (Ca)=(μ×)/σ,'}, 'the capillary number is determined by the following equation 1{'sup': '2', 'wherein the viscosity μ is from 0.005 to 0.05 kgf·s/m,'}wherein the coating velocity U is from 0.15 to 2.0 m/s, andwherein the surface tension σ is from 0.0015 to 0.005 kgf/m.2. The preparation method of a separator according to claim 1 , wherein the capillary number Ca is from 0.4 to 45.3. The preparation method of a separator according to claim 1 , wherein the aqueous medium is water claim 1 , or a mixture of alcohol and water.4. The preparation method of a separator according to claim 1 , wherein the polyolefin-based porous polymer film substrate is formed from at least one type of polymer selected from the group consisting of polyethylene claim 1 , polypropylene claim 1 , polybutylene claim 1 , and polypentene.5. The preparation method of a separator according to claim 1 , wherein the forming of the organic-inorganic composite porous coating layer ...

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Номер записи: 72
25-03-2021 дата публикации

RUBBER-REINFORCING CORD AND RUBBER PRODUCT INCLUDING SAME

Номер: US20210087389A1
Автор: KATAGIRI Shinya
Принадлежит:

A rubber-reinforcing cord () of the present invention includes at least one strand. The strand includes at least one filament bundle and a coating provided to cover at least a portion of the surface of the filament bundle. The coating contains a polymer and cellulose nanofibers, and does not contain a resorcinol-formaldehyde condensate. The polymer contains at least one selected from a polyurethane and a rubber component. In the coating, the content of the cellulose nanofibers is 0.1 to 10 parts by mass with respect to 100 parts by mass of the polymer. The proportion of the coating in the rubber-reinforcing cord is 18 vol % or more. 2. The rubber-reinforcing cord according to claim 1 , wherein claim 1 , in the coating claim 1 , the content of the cellulose nanofibers is 0.1 to 10 parts by mass with respect to 100 parts by mass of the total content of all components except the cellulose nanofibers.3. The rubber-reinforcing cord according to claim 1 , wherein the cellulose nanofibers have an average fiber diameter of 100 nm or less.4. The rubber-reinforcing cord according to claim 1 , wherein a filament included in the filament bundle is a carbon fiber filament or a glass fiber filament.5. A rubber product reinforced by the rubber-reinforcing cord according to .6. The rubber product according to claim 5 , being a rubber belt comprising matrix rubber and the rubber-reinforcing cord embedded in the matrix rubber.7. The rubber product according to claim 6 , wherein the matrix rubber comprises urethane rubber. The present invention relates to a rubber-reinforcing cord and a rubber product including the rubber-reinforcing cord.A rubber product such as a rubber belt commonly includes matrix rubber and a rubber-reinforcing cord embedded in the matrix rubber. The strength of the rubber belt depends on the strength of the rubber-reinforcing cord. The rubber-reinforcing cord is, therefore, an important member that determines the durable life of the rubber belt. The rubber- ...

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Номер записи: 73
30-03-2017 дата публикации

Diphenylguanidine-free rubber mixtures containing short-chain alkyl esters of glycerin

Номер: US20170088690A1
Автор: Heinz Unterberg, Hermann-Josef Weidenhaupt, Melanie WIEDEMEIER-JARAD, Ulrich Feldhues
Принадлежит: LANXESS DEUTSCHLAND GMBH

The invention relates to substantially diphenylguanidine-free rubber mixtures comprising at least one rubber, one silica-based filler and/or carbon black and short-chain alkyl esters of glycerol, production of these, use and vulcanizates thus obtainable.

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Номер записи: 74
30-03-2017 дата публикации

COMPOSITION FOR DIP MOLDING AND DIP-MOLDED ARTICLE

Номер: US20170088700A1
Автор: INOUE Sayaka, NAGAMORI Hiroyasu, NAKASHIMA Tomonori
Принадлежит: ZEON CORPORATION

A dip-molding composition of the present invention contains a latex (A) of a nitrile-group-containing highly saturated copolymer rubber (a). The nitrile-group-containing highly saturated copolymer rubber (a) contains an α,β-ethylenically unsaturated nitrile monomer unit and a conjugated diene monomer unit, and being obtained by hydrogenating at least part of the conjugated diene monomer unit. A dip-molded article of the present invention is produced by dip molding of the above dip-molding composition 1. A dip-molding composition comprising:a latex (A) of a nitrile-group-containing highly saturated copolymer rubber (a), the nitrile-group-containing highly saturated copolymer rubber (a) containing an α,β-ethylenically unsaturated nitrile monomer unit and a conjugated diene monomer unit, and being obtained by hydrogenating at least part of the conjugated diene monomer unit.2. The dip-molding composition as set forth in claim 1 , wherein:the nitrile-group-containing highly saturated copolymer rubber (a) has an iodine value of 100 or less.3. The dip-molding composition as set forth in claim 1 , wherein:the nitrile-group-containing highly saturated copolymer rubber (a) further contains an α,β-ethylenically unsaturated acid monomer unit.4. The dip-molding composition as set forth in claim 1 , further comprising a crosslinking agent.5. A dip-molded article produced by dip molding of the dip-molding composition as set forth in .6. The dip-molded article as set forth in claim 5 , wherein the dip-molded article is a glove.7. The dip-molded article as set forth in claim 5 , wherein the dip-molded article has a tensile strength of 35 MPa or more.8. The dip-molded article as set forth in claim 5 , wherein:no crack occurs in a strip of the dip-molded article in a case where (i) the strip is cut from the dip-molded article so as to have a width of 2 cm and a length of 10 cm and (ii) the strip is placed in an environment at a temperature of 130° C. for 6 days and then bent in an ...

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Номер записи: 75
05-05-2022 дата публикации

Softer Blended Nitrile Elastomeric Article

Номер: US20220135776A1
Автор: Issara Sopha, Modha Shantilal H., Tan Siew Hoe
Принадлежит:

An elastomeric article is formed from a blend of nitrile rubber and polychloroprene rubber. The elastomeric article can be a glove, such as a medical exam glove. The elastomeric article is softer than a conventional nitrile elastomeric article. The elastomeric article is formed from a blended rubber latex emulsion of nitrile and polychloroprene. The blended rubber latex emulsion may be free of sulfur and vulcanization accelerators.

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Номер записи: 76
19-03-2020 дата публикации

Composition comprising a light-weight filler

Номер: US20200087532A1
Автор: Michael Klotz, Peter Born, Ralf Sauer, Thomas Zahn
Принадлежит: Henkel AG and Co KGaA

The present invention relates to compositions containing at least one reactive binder, at least one curing agent and/or accelerator, at least one thermally activatable blowing agent and at least one light-weight filler, wherein at least one expanded particle of at least one glass-rich volcanic rock with a closed outer shell is contained as a light-weight filler. The invention also relates to a method for stiffening and/or reinforcing components with thin-walled structures with a corresponding composition as well as to correspondingly produced components.

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Номер записи: 77
12-05-2022 дата публикации

Mixed Ionic Electronic Conductors for Improved Charge Transport in Electrotherapeutic Devices

Номер: US20220143395A1
Автор: Heintz Amy M., Lalgudi Ramanathan, Palmer Katherine M., Shqau Krenar
Принадлежит:

This invention addresses the need for efficient dry skin electrodes. Robust, flexible Mixed Ionic Electronic Conductor (MIEC) electrodes were prepared by an aqueous solution route resulting in electrically conductive networks of carbon nanotubes (CNTs) and ionically conductive elastic matrix. The flexible electrode was characterized in terms of conductivity, ionic charge transfer resistance, and water uptake. The flexible electrode maintained low resistance even after multiple cycles of 50% extension and contraction. 17-. (canceled)8. An electrode , comprising:elastomer, CNTs, and a glycosaminoglycan;and characterizable by:a conductivity of at least 1000 mS/cm that changes by less than 10% after 5 strain cycles of extending the material by 50% and allowing to contract.9. The electrode of comprising a conductivity of at least 1000 mS/cm to about 3000 mS/cm that changes by less than 10% after 5 strain cycles of extending the material by 50% and allowing to contract.10. The electrode of wherein the ratio of partial conductivity of a charge carrier to the total conductivity claim 8 , transference number claim 8 , ti of the electrode is at least 0.10 claim 8 , preferably at least 0.13 claim 8 , in some embodiments in the range of 0.10 to about 0.20 or 0.15 to about 0.20.11. A method of making a flexible electrode suitable for neuromuscular electrical stimulation claim 8 , comprising:forming an aqueous dispersion of CNTs and a glycosaminoglycan;combining the aqueous dispersion with an aqueous emulsion of an elastomer to form a composite precursor;depositing the precursor onto a surface, removing water, and curing the elastomer to form the electrode.12. The method of further comprising treating the electrode with aqueous sodium chloride.1334-. (canceled)35. A method of administering a medicine through the skin claim 11 , comprising:applying the electrode of any of the previous claims onto the skin of an animal;wherein the electrode comprises a medicine;applying a potential ...

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Номер записи: 78
05-04-2018 дата публикации

PREPARATION METHOD OF RUBBER COMPOSITION FOR TIRE AND PRODUCTION METHOD OF TIRE

Номер: US20180094107A1
Автор: Ikeda Keiji, NAGASE Takayuki, TANAKA Tatsuhiro
Принадлежит: SUMITOMO RUBBER INDUSTRIES, LTD.

A preparation method of a rubber composition for a tire assures that good processability can be obtained even if a silane coupling agent having a mercapto group is blended. The preparation method of a rubber composition for a tire is characterized by initiating kneading of a rubber component and a compound represented by the following formula (1) before kneading the rubber component and a silane coupling agent having a mercapto group. 2. The preparation method of claim 1 , wherein the rubber component comprises not less than 50% by mass of a diene rubber having a styrene content of 25 to 50% by mass and an amount of a vinyl bond of 10 to 35 mole %.3. The preparation method of claim 2 , wherein the styrene content is not less than 2 times the amount of a vinyl bond.5. A method of producing a tire comprising a step of forming a tire member from the rubber composition for tire obtained by the preparation method of and forming a green tire by combining the tire member with other tire members claim 1 , and a vulcanization step of vulcanizing the green tire obtained in the forming step. The present disclosure relates to a preparation method of a rubber composition for a tire and a production method of a tire.Recently, in the light of resources saving, energy saving and in addition, protection of environment, a strong demand for reduction of exhausted carbon dioxide is increasing, and various countermeasures such as weight saving of a vehicle and use of electric energy have been considered. Accordingly, it is demanded to enhance fuel efficiency by decreasing rolling resistance of a tire for a vehicle, and also improvement of performances such as durability is desired.For example, there are known, as a method for decreasing rolling resistance, techniques such as blending of silica, decrease in an amount of a filler, use of a filler having less reinforcing property. However, there is a tendency that a mechanical strength of a rubber decreases and various performances are ...

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Номер записи: 79
28-03-2019 дата публикации

EXPANDED RUBBER ARTICLES

Номер: US20190092097A1
Автор: Adams Richard
Принадлежит:

Expanded rubber articles and processes for making such, comprising: partially curing an expandable rubber formulation by heating it in a first mould cavity to form a moulded blank; releasing the moulded blank from the first mould cavity and allowing the moulded blank to expand to form an expanded moulded blank; and further curing and expanding the expanded moulded blank by heating it to form the expanded rubber article comprising an expanded rubber part, wherein the expanded moulded blank is heated in a second mould cavity. Optionally, the expanded moulded blank is contacted with a further rubber formulation and a substrate comprising a base material and an elastomer bonding layer in the second mould cavity to form an expanded rubber article additionally comprising a solid rubber part and a substrate. 14-. (canceled)5. A process for making an expanded rubber article , wherein the process comprises:a) a moulded blank formation step, in which an expandable rubber formulation, comprising an elastomeric material, a curing agent and an expansion agent, is heated in a first mould cavity to partially cure the expandable rubber formulation thereby forming a moulded blank, wherein the first mould cavity confines expansion of the expandable rubber formulation;b) a releasing step, in which the moulded blank is released from the first mould cavity, and in which the moulded blank expands to a volume larger than the volume of the first mould cavity thereby forming an expanded moulded blank;c) a stabilisation step, in which the expanded moulded blank is left to stabilise until the volume of the expanded moulded blank is substantially constant; and,d) a further curing step, in which the stabilised expanded moulded blank is heated to further cure and expand the expandable rubber formulation thereby forming the expanded rubber article;wherein the expanded moulded blank is heated in a second mould cavity in further curing step (d).6. The process according to claim 5 , wherein the ...

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Номер записи: 80
28-03-2019 дата публикации

Method for producing a prophylactic article

Номер: US20190092879A1
Автор: Armin HOLZNER, Jakob Cornelius Manhart, Melahat SAHIN, Raimund Schaller, Sandra Schloegl, Wolfgang Kern
Принадлежит: Semperit AG Holding

According to a method for the manufacture of a prophylactic article, especially of a glove, from a (carboxylated) diene rubber, at least one layer of a (carboxylated) diene latex is applied on a former and the (carboxylated) diene latex is cross-linked with a cross-linking agent, wherein a mercapto-functional siloxane polymer is used as cross-linking agent.

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Номер записи: 81
16-04-2015 дата публикации

RUBBER COMPOSTION, PREPARATION METHOD AND VULCANIZED RUBBER THEREOF

Номер: US20150105490A1
Автор: Cai Chuanlun, Cong Yuexin, Gao Jianming, Guo Meifang, Lai Jinmei, Li Binghai, LI Ying, Qi Guicun, Qiao Jinliang, Shi Hongwei, Song Peijun, Song Zhihai, Sun Yanling, Wang Xiang, Wang Ya, Zhang Hongbin, Zhang Qianmin, Zhang Xiaohong, Zhao Guoxun
Принадлежит:

The present application relates to a rubber composition, preparation method and vulcanized rubber thereof. The rubber composition comprises uncrosslinked rubber and rubber particles having crosslinked structure dispersed therein, wherein the rubber particles having crosslinked structure are synthetic rubber particles and/or natural rubber particles, e.g. one or more selected from the group consisting of natural rubber particles, styrene-butadiene rubber particles, carboxylated styrene-butadiene rubber particles, nitrile butadiene rubber particles, carboxylated nitrile butadiene rubber particles, chloroprene rubber particles, polybutadiene rubber particles, silicone rubber particles or acrylic rubber particles, styrene-butadiene-vinylpyridine rubber particles and the like, with an average particle size of 20 to 500 nm and a gel content of 60% by weight or higher, and the uncrosslinked rubber is styrene-butadiene rubber, and wherein the weight ratio of the rubber particles having crosslinked structure to the uncrosslinked rubber is 1:99-20:80. The rubber composition is obtained by mixing the components comprising uncrosslinked rubber latex and latex of rubber particles having crosslinked structure and then coagulating them. The latex of rubber particles having crosslinked structure is a rubber latex after radiation crosslinking. The vulcanized rubber of the rubber composition can be improved simultaneously in rolling resistance, wet skid resistance and wear resistance and thus can be used as high performance vehicle tread rubber. 111-. (canceled)12. A rubber composition , comprising uncrosslinked rubber and , dispersed therein , rubber particles having crosslinked structures , wherein the rubber particles having crosslinked structures comprise synthetic and/or natural rubber particles with an average particle size ranging from 20 nm to 500 nm and a gel content of at least 60 wt % , and wherein the uncrosslinked rubber comprises styrene-butadiene rubber , and further ...

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Номер записи: 82
26-03-2020 дата публикации

COMPOSITION FOR LOW SPECIFIC GRAVITY MOLDED FOAM AND METHOD FOR PRODUCING MOLDED FOAM USING THE COMPOSITION

Номер: US20200094440A1
Автор: LEE Sung Yull
Принадлежит:

Provided is a composition for a low specific gravity molded foam. The composition includes at least one polymer component selected from the group consisting of a peroxide-crosslinkable thermoplastic resin, a peroxide-crosslinkable rubber and a peroxide-crosslinkable thermoplastic elastomer, thermally expandable microspheres, and an organic peroxide crosslinking agent. 1. A method for producing a low specific gravity molded foam , comprising: providing a foamable composition comprising a mixture of at least one polymer component selected from the group consisting of a peroxide-crosslinkable thermoplastic resin , a peroxide-crosslinkable rubber and a peroxide-crosslinkable thermoplastic elastomer , thermally expandable microspheres , and an organic peroxide crosslinking agent; introducing the foamable composition into a mold for producing a molded foam; raising the temperature of the foamable composition to at least the expansion start temperature (T) of the thermally expandable microspheres to expand the foamable composition in the mold; forming a molded foam in a state in which the foamable composition is expanded to fill the mold; and releasing the molded foam from the mold.2. The method according to claim 1 , wherein the foamable composition is prepared by extrusion of the mixture.3. The method according to claim 1 , wherein the foamable composition is in the form of pellets claim 1 , rods or sheets.4. The method according to claim 1 , wherein the foamable composition is introduced in an amount to fill 50% or less of the volume of the mold.5. The method according to claim 1 , wherein the foamable composition introduced into the mold remains unfoamed or is only slightly foamed and the specific gravity of the only slightly foamed foamable composition is 0.7 to 0.9.6. The method according to claim 1 , wherein the temperature of the foamable composition is raised by directly or indirectly heating the mold with a heat source.7. The method according to claim 6 , wherein ...

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Номер записи: 83
26-03-2020 дата публикации

CURABLE COMPOSITIONS

Номер: US20200095418A1
Автор: Konarski Mark M., Li Ling, Mamangun Donna M.
Принадлежит:

A curable composition, includes a diluent, an epoxy functionalized resin derived from a nutshell oil, an epoxy-rubber copolymer adduct, and a curing agent. There is disclosed a method for making the curable composition, a method of imbuing improved flexibility to a curable composition and a method for improving oily metal adhesion of a curable composition. The method of imbuing improved flexibility to a curable composition includes providing a curable composition, adding an epoxy functionalized resin derived from a nutshell oil and adding a liquid modified hydrocarbon resin derived from a nutshell oil. 1. A curable composition , said composition comprising:a diluent;an epoxy functionalized resin derived from a nutshell oil;an epoxy-rubber copolymer adduct; anda curing agent.2. The curable composition according to claim 1 , wherein the epoxy functionalized resin is derived from a nutshell oil selected from the group consisting of almond oil claim 1 , pine nut oil claim 1 , walnut oil claim 1 , Brazil nut oil claim 1 , hazel nut oil claim 1 , pistachio oil claim 1 , peanut oil claim 1 , cashew nut oil claim 1 , coconut oil claim 1 , chestnut oil claim 1 , sunflower seed oil claim 1 , macadamia nut oil claim 1 , butternut oil claim 1 , English walnut oil claim 1 , and combinations thereof claim 1 , functionalized with at least one epoxy group.3. The curable composition according to claim 1 , wherein the epoxy functionalized resin is epoxidized cashew nut shell resin.4. The curable composition according to claim 3 , wherein an epoxidized cashew nut shell resin comprises:a monofunctional epoxy resin,a difunctional epoxy resin,a multifunctional epoxy resin, or a blend thereof.8. The curable composition according to claim 1 , wherein the percentage by weight of epoxy functionalized resin is greater than the percent by weight of diluent.9. The curable composition according to claim 1 , wherein the diluent is within a range of 10 to 20 percent by weight of the curable ...

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Номер записи: 84
12-04-2018 дата публикации

Crosslinked composition comprising ethylene vinyl acetate copolymer and nitrile rubber

Номер: US20180100059A1
Автор: AHN Dae-Up, LIM Jong-Chan
Принадлежит:

A crosslinked composition for use as a sheath layer of cable is obtained from polymer blend having ethylene vinyl acetate copolymer (EVA), nitrile rubber (NBR) and crosslinking agent. The polymer blend further has a reactive polymer containing at least one nucleophilic or electrophilic functional group and a reactive compound selected from amphiphilic compound containing at least one nucleophilic or electrophilic functional group that can chemically react with nucleophilic or electrophilic functional group of the reactive polymer. 1. A crosslinked composition ,wherein said crosslinked composition is obtained from a polymer blend having ethylene vinyl acetate copolymer (EVA), nitrile rubber (NBR) and crosslinking agent, a reactive polymer containing at least one nucleophilic or electrophilic functional group; and', 'a reactive compound selected from amphiphilic compound containing at least one nucleophilic or electrophilic functional group that can chemically react with the nucleophilic or electrophilic functional group of reactive polymer., 'wherein said polymer blend further includes2. The composition according to claim 1 , wherein when the reactive polymer contains a nucleophilic functional group claim 1 , the reactive compound contains an electrophilic functional group claim 1 , or when the reactive polymer contains an electrophilic functional group claim 1 , the reactive compound contains a nucleophilic functional group.3. The composition according to claim 1 , wherein the ethylene vinyl acetate copolymer has 50% by weight or less of vinyl acetate content.4. The composition according to claim 1 , wherein the difference of Hildebrand solubility parameter between EVA and NBR is more than 0.5 (cal/cm).5. The composition according to claim 1 , wherein the reactive polymer and the reactive compound has between 8.0 and 10.5 (cal/cm)of Hildebrand solubility parameter claim 1 , separately.6. The composition according to claim 1 , wherein the electrophilic functional ...

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Номер записи: 85
13-04-2017 дата публикации

PHASED RUBBER COMPOSITION AND TIRE WITH TREAD

Номер: US20170101525A1
Автор: Busch Warren James, FORCINITI Leandro, Meza Roberto Cerrato, Sandstrom Paul Harry, Zartman Gregory Daniel, Zhao Junling
Принадлежит:

The invention relates to a phased rubber composition and tire tread thereof intended for heavy duty service such as for example a truck tire. The phased rubber composition is comprised of the product of blending a first rubber phase comprised of cis 1,4-polybutadiene rubber and reinforcing filler comprised of rubber reinforcing carbon black and a second rubber phase comprised of natural cis 1,4-polyisoprene rubber and reinforcing filler comprised of precipitated silica. 1. A method for preparation of a sulfur curable rubber composition comprised of diene-based elastomers with reinforcing filler comprised of a combination of rubber reinforcing carbon black and precipitated silica comprised of:(A) preparation of a first masterbatch comprised of cis 1,4-polybutadiene rubber and from about 35 to about 70 phr of reinforcing filler comprised of rubber reinforcing carbon black,(B) preparation of a second masterbatch comprised of cis 1,4-polyisoprene natural rubber and from about 15 to about 50 phr of reinforcing filler comprised of precipitated silica, and (1) together followed by addition of sulfur curatives comprised of sulfur and sulfur vulcanization accelerator(s), or', '(2) together with sulfur curatives comprised of sulfur and sulfur vulcanization accelerator(s);', (a) with the second masterbatch, or', '(b) with the blend of masterbatches to couple the precipitated silica to the diene-based elastomer(s), where the silica coupling agent contains a moiety reactive with hydroxyl groups on said precipitated silica and another different moiety interactive with said diene-based elastomer(s),, 'wherein a silica coupling agent (silica coupler) is blended with, 'wherein the rubber composition comprised of the blended masterbatches contains about 55 to about 70 phr of said cis 1,4-polybutadiene rubber and about 45 to about 30 phr of said cis 1,4-polyisoprene natural rubber;', 'wherein the rubber composition comprised of the blended masterbatches contains reinforcing filler ...

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Номер записи: 86
21-04-2016 дата публикации

NOVEL TRANSITION METAL COMPLEXES, THEIR PREPARATION AND USE

Номер: US20160108073A1
Автор: BOONE Michael, Lund Clinton, MCKINTY ADAM, Ong Christopher, STEPHAN DOUGLAS WADE
Принадлежит:

Novel transition metal complexes are provided which represent viable catalysts for a broad variety of reactions such as hydrogenation reactions and metathesis reactions. Novel preparation processes are made available via unprecedented routes inter alia not involving structures according to Grubbs I or Grubbs II catalysts. 3. The complex according to claim 2 , wherein in general formula (I)M means Ru;X means O or S;{'sup': 2', '2', '2, 'sub': 1', '6', '5', '6', '6', '14, 'D means S, O, PR, or NRwith Rmeaning straight chain or branched C-Calkyl, C-Ccycloalkyl, or C-Caryl.'}Y means 1,2-ethylene or 1,2-phenyl;R means phenyl with none, 1, 2, 3, 4, or 5 substituents selected from the group consisting of F, Cl, Br, and I;{'sup': 1', '6', '7', '4', '5, 'sub': 3', '3', '3', '3', '2', '3', '3', '6', '4', '3', '3', '6', '4', '3', '6', '4', '3', '3', '2', '6', '4', '3', '3', '3', '3', '2', '3', '3', '3', '3', '3', '3', '6', '24', '1', '10', '6', '10', '6', '10, 'Lis selected from the group consisting of PPh, P(p-Tol), P(o-Tol), PPh(CH), P(CF), P(p-FCH), P(p-CFCH), P(CH—SONa), P(CHCH—SONa), P(isopropyl), P(CHCH(CHCH)), P(cyclopentyl), P(cyclohexyl), P(neopentyl), P(neophyl), and an N-heterocyclic carbene ligand of general formulae (IM-a) or (IM-b), wherein Rand Rare identical or different and represent i-propyl, neopentyl, adamantyl, mesityl or 2,6-diisopropylphenyl, and Rand Rare identical or different and represent hydrogen, C-C-aryl, straight-chain or branched C-C-alkyl, or together with the carbon atoms to which they are bound form a C-Ccycloalkyl or C-Caryl substituent;'}Z means B, Al, Ga, or In;{'sup': '1', 'Rare identical or different and represent F, Cl, Br, or I;'}{'sup': '1', 'Xmeans F, Cl, Br, or I;'}{'sup': '2', 'sub': '3', 'Lrepresents CHCN, pyridine or tetrahydrofurane; and'}n is either 0 or 1.10. (canceled)11. (canceled)12. A process for preparing compounds using the complex according to claim 2 , the process comprising subjecting a starting compound to a ...

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Номер записи: 87
21-04-2016 дата публикации

NITRILE RUBBERS HAVING LOW EMISSION VALUES

Номер: US20160108162A1
Автор: BRANDAU Sven, Kaiser Andreas, MAGG Hans, WESTEPPE Uwe
Принадлежит:

An improved polymerization process using a specific molecular weight regulator makes it possible to produce new nitrile rubbers featuring particularly low emission values and giving vulcanizates which have an advantageous profile of properties and which are of outstanding quality, in particular in odour-sensitive applications. 2. The vulcanizable mixture according to claim 1 , wherein the nitrile rubber is prepared in emulsion in the presence of tertiary nonyl mercaptan claim 1 , wherein the emulsion polymerization is carried out up to a conversion of at least 60% by weight claim 1 , based on the sum of the monomers.3. The vulcanizable mixture according to claim 1 , wherein:the nitrile rubber is prepared emulsion in the presence of tertiary nonyl mercaptan, wherein the emulsion polymerization is carried out up to a conversion of at least 60% by weight, based on the sum of the monomers;{'sub': 3', '5, 'the at least one α,β-unsaturated nitrite monomer is selected from (C-C) α,β-unsaturated nitrites and mixtures thereof; and'}{'sub': 4', '6, 'the at least one conjugated diene monomer is selected from (C-C) conjugated dienes and mixtures thereof.'}4. The vulcanizable mixture according to claim 1 , wherein:the nitrile rubber is prepared in the presence of tertiary nonyl mercaptan;the at least one α,β-unsaturated nitrile monomer is selected from acrylonitrile, methacrylonitrile, ethacrylonitrile, and mixtures thereof; andthe at least one conjugated diene monomer is selected from 1,2-butadiene, 1,3-butadiene, isoprene, 2,3-dimethylbutadiene, piperylene and mixtures thereof.5. The vulcanizable mixture according to claim 1 , wherein:the nitrile rubber is prepared in the presence of tertiary nonyl mercaptan;the at least one α,β-unsaturated nitrile monomer is acrylonitrile; andthe at least one conjugated diene monomer is 1,3-butadiene.6. The vulcanizable mixture according to claim 1 , further comprising one or more fillers and no claim 1 , one or more additional additive(s).7. ...

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Номер записи: 88
21-04-2016 дата публикации

Elastomer formulations comprising discrete carbon nanotube fibers

Номер: US20160108202A1
Автор: Clive P. Bosnyak, Kurt W. Swogger
Принадлежит: MOLECULAR REBAR DESIGN LLC

This present invention relates to the carbon nanotubes as composites with materials such as elastomers, thermosets and thermoplastics. A further feature of this invention relates to the development of a concentrate of carbon nanotubes with an elastomer wherein the concentrate can be further diluted with an elastomer and other polymers and fillers using conventional melt mixing equipment.

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Номер записи: 89
23-04-2015 дата публикации

METHOD FOR PRODUCING RUBBER COMPOSITION AND RUBBER COMPOSITION

Номер: US20150111998A1
Автор: KAWAMOTO Keiichi, NIIHARA Kenichi, Noguchi Toru, Ueki Hiroyuki
Принадлежит:

A method for producing a rubber composition include a mixing step, a drying step, and a dispersion step. In the mixing step, an aqueous solution that includes at least one of oxycellulose fibers and cellulose nanofibers is mixed with rubber latex to obtain a first mixture. In the drying step, the first mixture is dried to obtain a second mixture. In the dispersion step, the second mixture is tight-milled using an open roll to obtain a rubber composition. The rubber composition does not include an aggregate that includes at least one of the oxycellulose fibers and the cellulose nanofibers, and has a diameter of 0.1 mm or more. 1. A method for producing a rubber composition comprising:a mixing step that mixes an aqueous solution that includes at least one of oxycellulose fibers and cellulose nanofibers with rubber latex to obtain a first mixture;a drying step that dries the first mixture to obtain a second mixture; anda dispersion step that tight-mills the second mixture using an open roll to obtain a rubber composition.2. The method for producing a rubber composition as defined in claim 1 ,wherein the aqueous solution includes at least one of the oxycellulose fibers and the cellulose nanofibers in a ratio of 0.1 to 10 mass %.3. The method for producing a rubber composition as defined in claim 2 ,wherein the dispersion step tight-mills the second mixture that includes at least one of the oxycellulose fibers and the cellulose nanofibers in an amount of 0.1 to 60 parts by mass based on 100 parts by mass of rubber, using the open roll at a roll distance of 0 to 0.5 mm and a roll temperature of 0 to 50° C.4. The method for producing a rubber composition as defined in claim 1 ,wherein the mixing step is performed using a roll mixing method.5. The method for producing a rubber composition as defined in claim 1 ,wherein the oxycellulose fibers have an average fiber diameter of 10 to 30 micrometers, andthe cellulose nanofibers have an average fiber diameter of 1 to 200 nm.6. ...

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Номер записи: 90
11-04-2019 дата публикации

VULCANIZATES AND TIRE COMPONENTS PREPARED FROM COMPOSITIONS INCLUDING MERCAPTO-FUNCTIONAL SILOXANES

Номер: US20190106546A1
Автор: Hogan Terrence E., Kayashima Kentaro
Принадлежит:

A vulcanizate prepared by a method including introducing an elastomer, a filler, and a mercapto-functional siloxane to form a masterbatch, where the mercapto-functional siloxane is selected from the group consisting of poly(dimethylsiloxane-co-mercaptopropylmethylsiloxane) and dimethoxy mercapto propyl terminated siloxanes, introducing a curative to the masterbatch to form a vulcanizable composition, and subjecting the vulcanizable composition to curing conditions. 1. A vulcanizate prepared by a method comprising:a. introducing an elastomer, a filler, and a mercapto-functional siloxane to form a masterbatch, where the mercapto-functional siloxane is selected from the group consisting of poly(dimethylsiloxane-co-mercaptopropylmethylsiloxane) and dimethoxy mercapto propyl terminated siloxanes;b. introducing a curative to the masterbatch to form a vulcanizable composition; andc. subjecting the vulcanizable composition to curing conditions.2. The vulcanizate of claim 1 , where the elastomer is a diene-based elastomer.3. The vulcanizate of claim 1 , where the filler includes silica.4. The vulcanizate of claim 1 , where said step of introducing introduces from about 5 to about 200 parts by weight filler per one hundred parts by weight elastomer and from about 0.5 to about 20 parts by weight mercapto-functional siloxane per one hundred parts by weight elastomer.5. The vulcanizate of any of claim 1 , where the vulcanizate is a tire tread.6. A vulcanizable composition comprising:a. an elastomer;b. from about 0.5 to about 20 parts by weight of a mercapto-functional siloxane per one hundred parts by weight elastomer, where the mercapto-functional siloxane is selected from poly(dimethylsiloxane-co-mercaptopropylmethylsiloxane) and dimethoxy mercapto propyl terminated siloxanes;c. from about 5 to about 200 parts by weight of a filler; andd. a curative for the elastomer.7. The vulcanizable composition of claim 6 , where the mercapto-functional siloxane is a distinct molecular ...

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Номер записи: 91
11-04-2019 дата публикации

Latex Composition For Dip-Molding, And Molded Article Prepared From Same

Номер: US20190106555A1
Автор: JOE Won Tae, KIM Jung Eun, Kwon Wonsang, Yang Seung Hun
Принадлежит: LG CHEM, LTD.

The present invention relates to a latex composition for dip-molding and a molded article produced therefrom. More specifically, the above composition can be used to prepare the dip-molded articles having gentle syneresis, no stickiness, and excellent chemical resistance by using monoglyceride. 1. A latex composition for dip-molding characterized by comprising a carboxylic acid-modified nitrile based copolymer latex copolymerized from conjugated diene-based monomers , ethylenically unsaturated nitrile monomers and ethylenically unsaturated acid monomers; and monoglyceride.2. The latex composition for dip-molding according to claim 1 , characterized in that the latex composition for dip-molding contains 0.01 to 5 parts by weight of the monoglyceride based on 100 parts by weight of carboxylic acid-modified nitrile based copolymer.3. The latex composition for dip-molding according to claim 1 , characterized in that the monoglyceride is at least one selected from the group consisting of glycerol monolaurate claim 1 , glycerol monostearate claim 1 , glycerol monobehenate claim 1 , glycerol monocaprylate claim 1 , and glycerol monocaprate.4. The latex composition for dip-molding according to claim 1 , characterized in that the carboxylic acid-modified nitrile-based copolymer is copolymerized from 40 to 89 wt. % of the conjugated diene-based monomer claim 1 , 10 to 50 wt. % of ethylenically unsaturated nitrile monomer and 0.1 to 10 wt. % of ethylenically unsaturated acid monomer based on the total sum of 100% by weight of the monomers.5. The latex composition for dip-molding according to claim 1 , characterized in that the conjugated diene-based monomer is at least one selected from the group consisting of 1 claim 1 ,3-butadiene claim 1 , 2 claim 1 ,3-dimethyl-1 claim 1 ,3-butadiene claim 1 , 2-ethyl-1 claim 1 ,3-butadiene claim 1 , 1 claim 1 ,3-pentadiene and isoprene.6. The latex composition for dip-molding according to claim 1 , characterized in that the ethylenically ...

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Номер записи: 92
30-04-2015 дата публикации

PREPARATION OF RUBBER COMPOSITION CONTAINING GRAPHITE PLATELETS AND TIRE WITH COMPONENT

Номер: US20150119495A1
Автор: Pulford Carl Trevor Ross, Yang Xiaoping, Zhao Junling
Принадлежит: THE GOODYEAR TIRE & RUBBER COMPANY

Preparation of a rubber composition containing a dispersion of aligned exfoliated graphite platelets. Such rubber composition is prepared by a method comprised of a sequential combination of concentrated solvent or dry masterbatching of elastomer and exfoliated graphite platelets, followed by blending the masterbatch (after removing the solvent from the solvent based masterbatch) with additional elastomer(s) and then followed by processing the resulting rubber composition to align the dispersed exfoliated graphite platelets in a substantially parallel relation to each other. Such processing may comprise as least one of extrusion and calendaring the rubber composition. The invention further relates to a tire containing a component comprised of such rubber composition containing a dispersion of aligned exfoliated graphite platelets prepared by the aforesaid method. 1. In accordance with this invention , a method of preparing a sulfur curable rubber composition is comprised of: (1) blending from about 0.5 to about 30 parts by weight of exfoliated graphite platelets with an organic solvent solution containing 100 parts by weight of at least one conjugated diene-based elastomer after which the masterbatch is dried by removing the organic solvent; or', '(2) blending from about 5 to about 60 parts by weight of exfoliated graphite platelets with 100 parts by weight of at least one conjugated diene-based elastomer followed by;, '(A) preparing a masterbatch comprised of (1) rubber reinforcing carbon black, or', '(2) combination of rubber reinforcing carbon black and precipitated silica together with a coupling agent for said precipitated silica having a moiety reactive with hydroxyl groups on said precipitated silica and another different moiety interactive with said conjugated diene-based elastomer(s)., '(B) preparing a subsequent sulfur curable rubber composition comprised of blending from about 20 to about 120 parts by weight of reinforcing filler per 100 parts by weight ...

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Номер записи: 93
27-04-2017 дата публикации

Rubber compounds containing silicon dioxide for the production of tyres

Номер: US20170114207A1
Автор: Giancarlo COSSU, Pasquale Agoretti
Принадлежит: Bridgestone Corp

A method for preparing a rubber compound comprising at least one first mixing step in which at least part of a cross-linkable polymer base is mixed at least with a reactive reinforcing filler, a dendrimer functionalized with polar groups adapted to interact with the reactive reinforcing filler and a nucleophile agent; and a subsequent mixing step in which the compound being prepared is mixed with a vulcanization system.

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Номер записи: 94
03-05-2018 дата публикации

POLYMER READY FOR INTRODUCTION INTO KNEADING MACHINE

Номер: US20180118896A1
Автор: KITAOU Ayaka, KOJIMA Ryoji, TOMISAKI Yukari, TSUCHIDA Tsuyoshi
Принадлежит: SUMITOMO RUBBER INDUSTRIES, LTD.

Provided are a polymer ready for introduction into a kneading machine which is milled with good milling efficiency in a kneading machine and which provides a kneaded mixture with excellent filler dispersion, and a rubber composition and a pneumatic tire containing the polymer. The present invention relates to a polymer ready for introduction into a kneading machine, excluding natural rubber, the polymer having a temperature within the range of −20° C. to 80° C. and satisfying the following formula (I): 1. A polymer ready for introduction into a kneading machine , excluding natural rubber , the polymer having a temperature within the range of −20° C. to 80° C. and satisfying the following formula (I):{'br': None, 'i': d', 'V, 'sup': 3', '4', '3, '(Tip clearance of kneading machine)≤(Volume of polymer ready for introduction into kneading machine)≤2.0×10cm\u2003\u2003 (I).'}2. The polymer ready for introduction into a kneading machine according to claim 1 ,wherein the polymer has a quadrangular prism shape that satisfies a≥d, b≥d, and c≥d, wherein a, b, and c represent length, width, and height of the quadrangular prism shape, respectively.3. A rubber composition claim 1 , comprising the polymer ready for introduction into a kneading machine according to .4. A pneumatic tire claim 3 , comprising the rubber composition according to . The present invention relates to a polymer ready for introduction into a kneading machine, a rubber composition, and a pneumatic tire.With the recent introduction of tire labeling systems in various countries, there is a need for rubber compounds that simultaneously have high-level properties, such as rolling resistance, abrasion resistance, and wet grip performance. To this end, various techniques have been developed.In general, in order to exploit the potential properties of materials that constitute rubber compositions, various techniques have been proposed to improve the dispersibility of fillers because dispersibility of these ...

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Номер записи: 95
04-05-2017 дата публикации

IMPROVEMENTS IN AND RELATING TO EXPANDED RUBBER ARTICLES

Номер: US20170120678A1
Автор: Adams Richard
Принадлежит:

Expanded rubber articles () and processes for making such, comprising: partially curing an expandable rubber formulation () by heating it in a first mould cavity () to form a moulded blank (); releasing the moulded blank () from the first mould cavity () and allowing the moulded blank () to expand to form an expanded moulded blank (); and further curing and expanding the expanded moulded blank () by heating it to form the expanded rubber article () comprising an expanded rubber part (), wherein the expanded moulded blank () is heated in a second mould cavity (). Optionally, the expanded moulded blank () is contacted with a further rubber formulation () and a substrate comprising a base material () and an elastomer bonding layer () in the second mould cavity () to form an expanded rubber article additionally comprising a solid rubber part () and a substrate (). 133-. (canceled)34. A process for making an expanded rubber article , wherein the expanded rubber article is a moulded tyre , the process comprising:a) a moulded blank formation step, in which an expandable rubber formulation, comprising an elastomeric material, a curing agent and an expansion agent, is heated in a first mould cavity to partially cure the expandable rubber formulation thereby forming a moulded blank, wherein the first mould cavity confines expansion of the expandable rubber formulation;b) a releasing step, in which the moulded blank is released from the first mould cavity, and in which the moulded blank expands to a volume larger than the volume of the first mould cavity thereby forming an expanded moulded blank; and,c) a further curing step, in which the expanded moulded blank is heated to further cure and expand the expandable rubber formulation thereby forming the expanded rubber article;wherein the expanded moulded blank is heated in a second mould cavity in further curing step (c).35. The process according to claim 34 , wherein the elastomeric material comprises one or more rubber ...

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Номер записи: 96
04-05-2017 дата публикации

METHOD FOR PRODUCING CARBON NANOTUBE DISPERSION LIQUID, CARBON NANOTUBE DISPERSION LIQUID, METHOD FOR PRODUCING COMPOSITE MATERIAL COMPOSITION, METHOD FOR PRODUCING COMPOSITE MATERIAL, COMPOSITE MATERIAL, AND COMPOSITE MATERIAL SHAPED PRODUCT

Номер: US20170121178A1
Автор: SHIGETA Masahiro, UEJIMA Mitsugu
Принадлежит: ZEON CORPORATION

Provided is a method for efficiently producing a carbon nanotube (CNT) dispersion liquid of highly dispersed CNTs while also suppressing damage to the CNTs. The method for producing a carbon nanotube dispersion liquid includes a dispersing step that includes at least one cycle of dispersing treatment in which pressure is applied to a coarse dispersion liquid containing carbon nanotubes and a dispersion medium, the coarse dispersion liquid is fed under pressure, and shear force is applied to the coarse dispersion liquid such as to disperse the carbon nanotubes. A plurality of repetitions of the dispersing step are performed while altering the pressure that is applied to the coarse dispersion liquid. In at least one instance, the pressure applied to the coarse dispersion liquid is altered by at least 10 MPa between consecutive repetitions of the dispersing step. 1. A method for producing a carbon nanotube dispersion liquid comprisinga dispersing step including at least one cycle of dispersing treatment in which pressure is applied to a coarse dispersion liquid containing carbon nanotubes and a dispersion medium, the coarse dispersion liquid is fed under pressure, and shear force is applied to the coarse dispersion liquid such as to disperse the carbon nanotubes, whereina plurality of repetitions of the dispersing step are performed while altering the pressure that is applied to the coarse dispersion liquid, andin at least one instance, the pressure applied to the coarse dispersion liquid is altered by at least 10 MPa between consecutive repetitions of the dispersing step.2. The method for producing a carbon nanotube dispersion liquid of claim 1 , whereinthe carbon nanotubes have an average diameter (Av) and a diameter standard deviation (σ) that satisfy a relationship 0.20<(3σ/Av)<0.60.3. The method for producing a carbon nanotube dispersion liquid of claim 1 , wherein{'sup': '2', 'the carbon nanotubes have a BET specific surface area of at least 600 m/g.'}4. A carbon ...

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Номер записи: 97
04-05-2017 дата публикации

LAMINATE AND TIRE

Номер: US20170121477A1
Автор: NISHII Masayuki
Принадлежит: BRIDGESTONE CORPORATION

A laminate having high ozone crack resistance and excellent in flexibility and fatigue resistance is provided. The laminate includes: a coating film containing modified polyvinyl alcohol grafted by a functional group that is linear-chain, cycloaliphatic, branched, or aromatic and has a molecular weight of 20 to 10000; and a rubber layer in contact with the coating film 1. A laminate comprising:a coating film containing modified polyvinyl alcohol grafted by a functional group that is linear-chain, cycloaliphatic, branched or aromatic and has a molecular weight of 20 to 10000; anda rubber layer in contact with the coating film.2. The laminate according to claim 1 ,wherein a carbon number of the functional group used for the grafting is 3 to 20.3. The laminate according to claim 1 ,wherein a proportion of introducing the functional group used for the grafting is 0.5 mol % to 50 mol % with respect to a vinyl alcohol unit in a main chain of the modified polyvinyl alcohol.4. The laminate according to claim 1 ,wherein the modified polyvinyl alcohol is further grafted by an acrylic group-containing oligosilanol group, and a proportion of introducing the acrylic group-containing oligosilanol group is 0.5 mol % to 10 mol % with respect to a vinyl alcohol unit in a main chain of the modified polyvinyl alcohol.5. The laminate according to claim 1 ,wherein a molecular weight of a main chain of the modified polyvinyl alcohol is 10000 or more.6. The laminate according to claim 1 , further comprisinga colored layer above or below the coating film.7. A tire using the laminate according to . The disclosure relates to a laminate and a tire.Ozone cracking is one of the factors that cause the deterioration of tires. Ozone cracking is a phenomenon that the main chain of rubber breaks due to ozone in the air and as a result a crack occurs. Ozone cracking is frequently found in diene-based polymers such as polybutadiene, polyisoprene, and styrene-butadiene. Since a break of the polymer ...

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Номер записи: 98
04-05-2017 дата публикации

A PROCESS TO PREPARE HIGH-QUALITY NATURAL RUBBER SILICA MASTERBATCH BY LIQUID PHASE MIXING

Номер: US20170121511A1
Автор: LI Junjuan, TANG Solomon Hsing-Kuo, YOU Lujun
Принадлежит:

The present invention relates to a process for making a polymer masterbatch with silica nanoparticles highly uniformly dispersed therein by using a stable aqueous emulsion of compatibilized silica nanoparticles, the sizes of which are mechanically reduced to nanoscales. Adequate reduction of the silica particles to nanoscales is essential for the formation of a desired emulsion of highly stability. The said emulsion of compatibilized silica nanoparticle can be easily mixed under mild conditions with a polymer in latex form, which can be high purity natural rubber, synthetic rubber and/or a blend thereof. The bifunctional organosilane coupling agent bonded-Silica nanoparticles are subsequently incorporated into the rubber polymer network during coagulation with formic acid. The inventive rubber-silica masterbatch thus obtained is useful for manufacturing rubber and other polymer composite products. 1. A polymer silica masterbatch comprising:a) a latex of a natural or a synthetic polymer or combinations thereof;b) an aqueous emulsion of about 10 weight percent to about 60 weight percent of a silica that is compatibilized with about 1 weight percent to about 15 weight percent of one or more organosilane coupling agents chemically bound to the surface of the silica, where the chemically modified silica particles are mechanically nano-sized through grinding in the emulsion which is further stabilized by a dispersing agent; andc) one or more compounding ingredients or combinations thereof.2. The polymer silica masterbatch of claim 1 , wherein the organosilane coupling agent is selected from mercaptopropyl-trimethoxysilane claim 1 , bis-(3-trimethoxysilylpropyl)-disulfide claim 1 , bis-(3-trimethoxysilylpropyl)-tetrasulfide claim 1 , γ-aminopropyltriethoxysilane claim 1 , γ-glycidoxypropyltrimethoxy-silane claim 1 , and vinyl trimethoxysilane or combinations thereof.3. The polymer silica masterbatch of claim 1 , wherein the dispersing agent is selected from sodium lauryl ...

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Номер записи: 99
25-04-2019 дата публикации

LATEX FORMULATION FOR MAKING ELASTOMERIC PRODUCTS

Номер: US20190119474A1
Автор: LIM KEUW WEI, TUNG Cian Ying, Wong Chong Ban
Принадлежит:

A latex formulation for making an elastomeric product, more particularly an elastomeric glove. The formulation comprises a mixture of at least one base polymer, a cross-linker; and a pH adjuster, where the pH adjuster provides a pH range of 9.5 to 10.5 to the latex composition. Still further, the present invention discloses a method for preparing a latex formulation for making elastomeric products, such as an elastomeric glove, without using accelerators, zinc oxide or sulphur. 2. The latex formulation as recited in wherein the elastomeric product is an elastomeric glove.3. The latex formulation as recited in wherein the base polymer is synthetic latex.4. The latex formulation as claimed in wherein the synthetic latex comprises at least one of carboxylated polyacrylonitrile butadiene claim 3 , neoprene claim 3 , or polyisoprene.5. The latex formulation as recited in wherein the synthetic latex comprises carboxylated polyacrylonitrile butadiene.6. The latex formulation as recited in wherein the trivalent metal comprises at least one of aluminium claim 1 , iron claim 1 , or chromium.7. The latex formulation as recited in wherein the trivalent metal-based compound comprises at least one of an aluminium based compound claim 1 , an iron (III) based compound claim 1 , or a chromium (III) based compound.8. The latex formulation as recited in wherein the trivalent metal-based compound comprises at least one of aluminium oxide claim 1 , aluminium sulphate claim 1 , aluminium chloride claim 1 , aluminium hydroxide claim 1 , aluminium phosphate claim 1 , or sodium aluminate.9. The latex formulation as recited in wherein the trivalent metal-based compound comprises aluminium hydroxide.10. The latex formulation as recited in wherein the cross-linker includes about 1% to about 20% by weight of the trivalent metal or trivalent metal-based compound.11. The latex formulation as recited in wherein the cross-linker contains about 3% by weight of the trivalent metal or trivalent metal- ...

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Номер записи: 100