КАУЧУКОВАЯ КОМПОЗИЦИЯ И КОНВЕЙЕРНАЯ ЛЕНТА

Изобретение относится к каучуковой композиции и конвейерной ленте. Каучуковая композиция содержит каучуковый компонент, содержащий бутадиеновый каучук, хлоропреновый каучук и натуральный каучук; органическая соль кобальта; канифоль или производное канифоли; и хлорорганическое соединение. Содержание бутадиенового каучука составляет от 5 масс.ч. до 20 масс.ч. на 100 масс.ч. каучукового компонента. Содержание хлоропренового каучука составляет от 20 масс.ч. до 65 масс.ч. на 100 масс.ч. каучукового компонента. Содержание органической соли кобальта составляет от 0,2 масс.ч. до 1,0 масс.ч. на 100 масс.ч. каучукового компонента при пересчете содержания органической соли кобальта на массу кобальта. Содержание канифоли или производного канифоли составляет от 2 масс.ч. до 9 масс.ч. на 100 масс.ч. каучукового компонента. Содержание хлорорганического соединения составляет от 5 масс.ч. до 35 масс.ч. на 100 масс.ч. каучукового компонента. Изобретение обеспечивает превосходную адгезию по отношению к оцинкованным ...

ОГНЕСТОЙКАЯ РЕЗИНОВАЯ СМЕСЬ С УЛУЧШЕННЫМИ АНТИФРИКЦИОННЫМИ СВОЙСТВАМИ

Изобретение относится к огнестойкой резиновой смеси с улучшенными антифрикционными свойствами и может быть использовано в уплотнительных деталях, подвижных узлах механизмов в нефтяной и машиностроительной промышленности. Резиновая смесь содержит, мас.ч.: комбинацию хлоропренового и бутадиен-нитрильного каучуков - 100,0, вулканизующий агент - оксид цинка - 5,0, ускоритель вулканизации - серу и тиурам - 0,9, активаторы вулканизации - оксид магния и стеариновую кислоту - 7,9-8,1, стабилизаторы и противостарители - ацетонанил и диафен ФП - 3,0-3,5, технический углерод - 60, битум нефтяной - 5,0, сантогард PVI - 0,4-0,6, трехокись сурьмы - 10,0-15,0, хлорпарафин ХП-66Т - 5,0-7,0, пластификатор - трикрезилфосфат - 10,0-15,0, дисульфид молибдена - 15,0-20,0. Изобретение позволяет получить огнестойкую резиновую смесь с улучшенными антифрикционными свойствами, пониженными показателями коэффициента трения и истираемости. 4 табл.

СТАБИЛЬНАЯ ПРИ ХРАНЕНИИ, СШИВАЕМАЯ ПОЛИМЕРНАЯ СМЕСЬ НА ОСНОВЕ ХЛОРИРОВАННОГО ПОЛИМЕРА

... 1. Сшиваемая полимерная смесь для применения в качестве смеси для изготовления оболочки электрических и/или оптических кабелей и проводов, которая содержит полихлоропрен и следующие компоненты:100 м.ч. полихлоропрена в качестве полимера, который содержит натуральный каучук (NR) и/или бутадиенстирольный каучук (SBR) в количестве от 0 до 40 м.ч./100 м.ч. каучука;минеральный наполнитель в количестве от 20 до 100 м.ч./100 м.ч. каучука;необязательно краситель;по меньшей мере один пластификатор;противостаритель;технологическую добавку в количестве от 3 до 16 м.ч./100 м.ч. каучука;необязательно связующий агент в количестве от 0,5 до 4,0 м.ч./100 м.ч. каучука;сшивающую систему, которая содержит метил-2-меркаптобензимидазол в количестве от 0,3 до 2,0 м.ч./100 м.ч. каучука, силан в количестве от 0,5 до 4,0 м.ч./100 м.ч. каучука, 3-метил-2-тиазолидинтион в количестве от 0,5 до 4,0 м.ч./100 м.ч. каучука и дисульфид 2-меркаптобензотиазола в количестве от 0,3 до 2 м.ч./100 м.ч. каучука;стабилизатор в ...

CHLOROPRENKAUTSCHUK-MISCHUNG

HAERTBARE MISCHUNGEN AUS CHLOROPRENPOLYMEREN UND AETHYLENCOPOLYMEREN

AN ACOUSTICAL-DAMPING FIBROUS OR CELLULAR MATERIAL, A PROCESS FOR ITS PREPARATION AND A LATEX COMPOSITION USEFUL FOR ITS PREPARATION

KAUTSCHUKZUSAMMENSETZUNG AUF BASIS VON CHLOROPREN

elektrisch leitfähige Schutzhandschuhe

THERMOPLASTISCHES ELASTOMER SOWIE VERFAHREN ZU SEINER HERSTELLUNG

Verfahren zur Herstellung von vernetzten Chloroprenpolymerisaten und Polymerisatmischungen,die diese enthalten

GUMMIVERBUNDSTOFF UND VERWENDUNGEN DAVON

Improvements in or relating to rubber-like compositions and methods of making same

Polymers of 2-chloro-1.3-butadiene are plasticized with polybutadiene (see Group V). The polybutadiene may be prepared by heating butadiene under pressure at 122 DEG F. with sodium oleate, potassium persulphate, dodecyl mercaptan and water till 80 per cent conversion has occurred. Phenyl b -naphthylamine is then added to the emulsion and unpolymerized butadiene removed by vacuum distillation. The latex may be coagulated with aluminium sulphate.ALSO:Polychloroprene is plasticized with polybutadiene, which may be prepared according to the method described in Group IV, to give a composition which is resistant to hardening at low temperatures. In many examples giving preferred compositions, these two substances are mixed with varying proportions of substances chosen from sulphur, zinc oxide, stearic acid, carbon black, particularly soft black P.33, dibenzothiazyl disulphide, light calcined magnesia, candelilla wax, phenyl b -naphthylamine, and piperidinium pentamethylene dithiocarbamate.

GASKET-FORMING COMPOSITION CONTAINING A 2-CHLORO-1,3-BUTADIENE POLYMER

... 1310206 Curable chlorobutadiene polymer compositions W R GRACE & CO 19 April 1971 [30 March 1970] 25549/71 Heading C3E A curable polymer composition comprises an elastomeric polymer of 2-chloro-1,3-butadiene dissolved in a volatile organic liquid, i.e. a liquid which is capable of volatilization from the composition in the course of the overall drying and curing cycle, and as a cure accelerator the 3 p.b.w. of thiourea per 100 p.b.w. of the elastomeric polymer. The composition may also contain plasticizers, fillers, peptizers, lubricants, antioxidants and pigments and is suitable for use in the preparation of gaskets for aerosol mounting cups.

Adhesive Compositions

... 1,170,045. Laminates. P.P.G. INDUSTRIES Inc. 13 March, 1968 [30 March, 1967], No. 12128/68. Heading B5N. [Also in Division C3] A laminating adhesive composition comprises: (A) 100 parts by weight of chloroprene polymer; (B) 10 to 150 parts by weight of one or more of: (1) oil - soluble, heat - hardenable phenol - aldehyde resins, (2) the reaction product of (1) with the reaction product of a phenol with a terpene, (3) metal resinate; (C) from 0À5 to 40 parts by weight of at least one oxide or hydroxide of a metal of Group I A , II A , II B or IV A of the Periodic Table; said 100 parts of chloroprene polymer consisting of: (1) 10 to 70% by weight of a non-creping chloroprene polymer which is at least partially vulcanized when milled at 212‹ F. with 5 parts of magnesium oxide per 100 parts of chloroprene polymer; (2) 5 to 75% by weight of a non-creping chloroprene polymer which has a low softening rate when treated with piperidinium pentamethylene dithiocarbamate and a high crystallizing ...

VULCANIZING PROCESS AND COMPOSITION

... 1411202 Vulcanizing halogen-containing rubber SUMITOMO CHEMICAL CO Ltd 14 Jan 1974 [12 Jan 1973] 01731/74 Heading C3E A vulcanizable composition contains a rubber base comprising a halogen-containing amorphous polymer and from 0.01 to 20 parts by weight per 100 parts of rubber base of a vulcanizing agent which is an organic hydroperoxide and/or a ketone peroxide. Examples are given in which (a) a chloroprene rubber formulation contains alpha-cumyl hydroperoxide and, as activator, p-quinone dioxine, ethylene glycol dimethacrylate, N,N1-m-phenylene bismaleimide the naphthenate of cobalt, iron or chromium, cobalt abietate, magnesium oxide or lead oxide; (b) a chlorinated ethylene/propylene/5-ethylidene-2-norbornene rubber formulation contains the said hydroperoxide and quinone dioxime; (c) - a chloroprene rubber, alone or together with ethylene / propylene / 5 - ethylidene - 2 - norbornene rubber, formulation contains the said hydroperoxide, cobalt abietate and quinone dioxime and ...

Moulding compound

A moulding compound having a higher resistance to thermal cycling and whose stability under the action of chemical media, particularly organic solvents, is improved, without any deterioration in its mechanical characteristics and its thermal stability under load, comprises 25 to 60 parts by weight of a phenol-formaldehyde resol resin and 40 to 75 parts by weight of a mixture of fillers, reinforcing fibres and conventional adjuvants, in which the phenol formaldehyde resol resin contains 0.5 to 20% by weight of one or more polymers based on 1,3-butadiene, 2-chloro-1,3-butadiene or isoprene or their copolymers with 0.5 to 45% by weight of acrylonitrile or with 0.5 to 65% by weight of styrene, the said polymers having a gel proportion of at least 45% by weight and being dispersed in the phenol-formaldehyde resol resin in the form of particles with an average particle size below 3 mu m.

CUSHION AND COVER COMPOSITIONS FOR V-BELTS

... 1,214,284. Polychloroprene compositions. GOODYEAR TIRE & RUBBER CO. 13 Jan., 1969 [6 Feb., 1968], No. 1892/69. Heading C3P. A carbon black loaded elastomeric composition comprises a blend of from 50 to 100 parts by weight of polychloroprene and from 50 to 0 parts by weight of another diene rubber, from 0 to 75 parts of at least one flexible filamentary material and from 0À5 to 20 parts of at least one fluorocarbon resin, said parts being by weight per 100 parts of blend. A suitable composition consists of polychloroprene, oil, carbon black, wax, particles and conventional curatives with or without cotton linters, and contains as the resin polytetrafluoroethylene or tetrafluoroethylene hexafluoropropylene copolymer. The compositions may be used as the cushion stock for a conveyer belt or to impregnate the fabric cover.

Method of improving properties of flame resistant polyethylene and products thereof

A flame resistant composition comprises polyethylene, an inorganic flame retardant such as chlorinated paraffin wax and 2 to 20 parts (per 100 by weight of the polyethylene) of a chlorinated elastomer such as neoprene. In examples, other ingredients are carbon black and stabilizers such as phenyl alpha naphthylamine and an epoxy resin. The composition finds application as insulation for electrical conductors.

Anti-corrosion and sealing medium and method of producing the same

Anti-corrosion and sealing compositions are obtained by treating high and/or low temperature tars, with or without pitches, with redox catalysts in the presence of high molecular weight polymers, in an oxygen atmosphere at 140-165 DEG C. Specified polymers are polystyrene and polyvinyl chloride. Fillers, e.g. limestone, talcam and asbestos, and pigments may also be present.ALSO:Anti-corrosion and sealing compositions are produced by treating high temperature and/or low temperature tars, with or without pitches, with redox catalysts in the pressure of high molecular weight polymers, with an oxygen containing atmosphere at 140 DEG C.-165 DEG C. The tar may be soft or medium tar, oxide pitch and/or resin pitch, tar pitch, hard pitch, soft pitch, natural or synthetic asphalts and residues of fats and fatty acid manufacture. Specified polymers are natural and synthetic caoutchoue, chlorinated caoutchoue, polystyrenes, polyvinyl chloride and silicones. Fillers, e.g. limestone, talcum, and asbestos ...

Aqueous dispersions of ethylene copolymer and their use

An aqueous dispersion of a mixture comprises particles of (1) a polymer of ethylene containing therein a recurring unit (a) and one or more recurring units selected from (b), (c) and (d), the recurring units being represented by the following structures:- (a) -CH2-CH2- where R is hydrogen or alkyl, M is hydrogen or a cation, R2 and R3 are the same or different and are hydrogen, hydroxyalkyl or hydrocarbon or may be combined together with nitrogen to form a heterocylic group and R4 is hydrocarbon, the groups of formulae (b), (c) and (d) being present in a ratio from 0.01 to 0.50 cumulative total mols of groups (b), (c) and (d) per mol of group (a) and (2) From 20 to 90% of total polymer solids of natural rubber or of an elastomeric polymer of at least one monomer selected from the group consisting of isobutylene, butadiene, chloroprene and isoprene. As ethylene polymers may be used those of Specification 1,009,016, while ethylene-methyl ...

Improvements in or relating to adhesive compositions and articles of manufacture, including the improved adhesive compositions

An oil-soluble heat-reactive resin consisting of the condensation product of p-tertiary-butyl, or amyl, phenol and formaldehyde, and neoprene with or without a thermoplastic coumarone-indene resin (including hydrogenated coumarone-indene resin), are dissolved in a volatile organic solvent such as toluol, aromatic hydrocarbons, chlorinated hydrocarbons or high naphthene petroleum solvents, to give an elastic adhesive cement resistant to gelling during storage. The relative proportions may vary within 50 to 200 parts of the resinous constituents to 90 parts of neoprene, the phenol-aldehyde resin being present to the extent of more than half, but not more than twice, that of the neoprene. Pigments, such as carbon black, fibrous material such as asbestos, other fillers and inert modifiers may be incorporated. In an example, 100 parts of neoprene with small amounts of phenyl-a -naphthylamine, calcined magnesia and zinc oxide, and 75 parts of the phenol-formaldehyde resin and 25 parts of coumarone-indene ...

Improvements in and relating to resinous compositions

Oil - resistant materials are prepared comprising plastic polymers of chloroprene and an alkyd resin prepared by the interaction of a polyhydric alcohol containing at least three hydroxyl groups and a dibasic acid, a dihydric alcohol, and a dibasic aliphatic acid. In examples, compositions are prepared containing (1) polychloroprene, litharge, sulphur, rosin, anti-oxidant, zinc oxide, benzol and alkyd resin; (2) polychloroprene, benzol, rubber cement (a solution of rubber in naphtha), sulphur and alkyd resin; (3) polychloroprene, magnesium oxide, sulphur, rosin, cottonseed oil, benzol, red iron oxide and alkyd resin; (5) polychloroprene, litharge, sulphur, rosin, antioxidant, zinc oxide, cumar resin, mineral oil, phenol-aldehyde resin and alkyd resin. The alkyd resin used in each example is prepared from glycerine, ethylene glycol, phthalic anhydride and adipic acid. The compositions may be used in the preparation of printers' blankets, rolls and matrices. Specifications 365,140 and 413,666 ...

MIXTURES OF RUBBER WITH GRAFT COPOLYMERS

Improvements in composition of matter and method of using same

A composition comprises a maleic-anhydride modified olefinic elastomer, polychloroprene and a rosin acid. Specified elastomers are natural rubber, butadiene - acrylonitrile, butadiene - styrene and butadiene-methyl methacrylate copolymers. Specified rosin acids are abietic acid, di- or tetra-hydroabietic acid, disproportionated abietic acid, isomerized rosin and hydrogenated rosin. It is preferred that 100 parts of a butadiene-acrylonitrile copolymer are used, with 10 to 65 parts polychloroprene and 75 to 150 parts rosin acid. A solvent such as toluene, methyl ethyl ketone, their mixture, an ester, high flash naphtha and methyl isobutyl ketone may be present, preferably so as to produce a composition containing from 10-40 per cent of solids. Pigments, e.g. titanium dioxide, zinc chromate, carbon black and precipitated hydrated silica or calcium silicate may also be present. The composition is particularly adapted for the bonding of films of polyperfluorovinyl chloride to metals.ALSO:A composition ...

Improvements in neoprene cement

A fast-curing neoprene cement contains rubbery chloroprene polymer dissolved in a solvent and hydrogen sulphide as an accelerator. Specified neoprenes are polychloroprene and the copolymers of chloroprene with styrene, acrylonitrile, vinyl pyridine, vinyl chloride, vinylidene chloride, chlorotrifluoroethylene, butadiene, isoprene, dichlorobutadiene and pentadienes and the reaction product of polychloroprene with sulphur. Specified solvents are benzene, toluene, xylene, ethylene dichloride, trichloroethylene, amyl acetate, butyl formate and acetate, ethyl acetate and propionate, methyl ethyl ketone, isophorone and mixtures thereof. An organic accelerator such as dibenzylamine, diethylamine, di-isopropylamine, dicyclohexylamine, mercaptothiazoline and mercaptoimidazoline may also be present.

BLENDS CONTAINING ELASTOMERS

DAMP PROOF SHEETS

... 1508672 Damp-proof sheets COAL INDUSTRY (PATENTS) Ltd 2 Nov 1976 [5 Dec 1975] 49991/75 Headings C3N and C3V Water-proof sheets are made of compositions comprising (1) at least 5% polychloroprene rubber, (2) up to 45% pitch and (3) at least 5% filler. The compositions may comprise fibrous and/or particulate fillers, carbon black, supplementary polymers and processing aids. Examples describe compositions comprising polychloroprene, coal tar pitch and carbon black together with (1) nitrile rubber, polyvinyl chloride, cotton/terylene fibres, whiting and polyethylene wax, (2) chlorinated polyethylene, cotton/nylon fibres, china clay and epoxidized soya bean oil, (3) nitrile rubber, chlorosulphonated polyethylene, polyvinyl chloride, terylene fibre, whiting and chlorinated paraffin, and (4) chlorinated polyethylene, nitrile rubber, chopped PVC conveyer belting, china clay or whiting, epoxidized soya bean oil and stearic acid.

Low-smoke, fire-resistant and water-resistant cable coating.

Low-smoke, fire-resistant and water-resistant cable coating.

SOUND PROOFING PANEL AND PROCEDURE FOR YOUR PRODUCTION

THERMOPLASTIC COMPOSITION AND METHOD TO THEIR PRODUCTION.

POLYCHLOROPRENGEMISCHZUSAMMENSETZUNG

PROCEDURE FOR THE PRODUCTION OF A BONDING MATERIAL ON BASIS OF VULCANIZATIONS OF ELASTOMERER

KORROSIONSSCHUTZFOLIE AUS CHLOROPRENKAUTSCHUK

GAS DENSITY FUSIONDUCTILE POLYMER MIXTURES

Sealant on the basis of Polyvinylharzen and softeners

Procedure for the production of a Polychloropren material suitable for painting purposes

COPOLYMERS

COMPATIBLE BLENDS OF ETHYLENE-PROPYLENE RUBBER AND POLYCHLOROPRENE OR NITRILE RUBBERS

Polymer blends

Golf ball with improved cover

COMPRESSION-RESISTANT WATER-SWELLABLE RUBBER COMPOSITION AND WATERTIGHT SEALING MATERIAL COMPRISING THE SAME

SPRAY-COATING PROCESS

SOLVENT-CONTAINING COMPOSITIONS BASED ON POLYCHLOROPRENE

The invention relates to solvent-containing compositions based on polychloroprene, to solvent-containing zinc oxide dispersions which are stable in storage, to a process for their production, to their use in solvent-containing polychloroprene formulations and to their use as additives in contact adhesives for inorganic or organic substrates.

DYNAMICALLY CURED THERMOPLASTIC OLEFIN POLYMERS

ABSTRACT OF THE DISCLOSURE Thermoplastic compositions useful as molded parts including automotive hoses and exterior body parts which exhibit good flow and good surface characteristics in injection molded parts. The compositions comprise equal proportions of a polyolefin, a halogenated butyl rubber and polychloroprene wherein the rubbers have been dynamically vulcanized to a fully cured state in the presence of the polyolefin.

THERMOPLASTIC ELASTOMER COMPOSITION

Dynamically partially cured blends of monoolefin copolymer rubber with a polyolefin resin and a conjugated diene rubber are thermoplastic and can be fabricated into useful articles by conventional processing methods such as injection molding or extrusion.

FIRE-RETARDANT PUTTY-LIKE COMPOSITIONS

TITLE OF THE INVENTION FIRE-RETARDANT PUTTY-LIKE COMPOSITIONS A composition for filling the spaces in bores penetrating walls and floors of buildings and having electric wires and cables extending therethrough or for filling the clearances at the joints of interior finishing materials of buildings. The composition comprises (a) 100 parts by weight of a curable polychloroprene in a liquid state at room temperature, (b) about 200 to about 700 parts by weight of a hydrated metallic oxide, and (c) about 20 to about 100 parts by weight of a heat-resistant fibrous material. The components (b) and (c) are contained in a combined amount of at least about 250 parts by weight per 100 parts by weight of the component (a). The composition will not soften, sag or drip in molten drops even when subjected to the high-temp-erature conditions of a fire, and gives a tough residual product retaining the original shape when burned and ashed, effectively preventing the spread of fire and assuring outstanding ...

ELASTOMERIC MASS OF POLYCHLOROPRENE SOL AND POLYCHLOROPRENE GEL AND ITS PREPARATION

Elastomeric mass of polychloroprene sol and polychloroprene gel and its preeparation An elastomeric mass of polychloroprene sol and polychloroprene gel in proportions in the range of 95:5 to 25:75% by weight in which the polychloroprene sol is free from sulphur and the polychloroprene gel used is a sulphur-containing gel with xanthate or carbamate functions has better processing characteristics than the pure sol component without the expected deterioration in the mechanical properties of the vulcanisates prepared from the mass.

VULCANIZABLE POLYMER MIXTURES, THEIR PRODUCTION AND USE AND VULCANIZATES OBTAINED THEREFROM

Vulcanlzable Polymer mixtures, their production and use and vulcanizates obtained thereform Polychloroprene rubbers having favorable processing behavior and excellent properties are obtained if mono-, di- or trichlorosubstituted polyisobutylene is added as plasticizer before vulcanizat1on.

CURABLE BLENDS OF CHLOROPRENE POLYMER AND ETHYLENE COPOLYMER

AD-4960 TITLE Curable Blends of Chloroprene Polymer and Ethylene Copolymer Curable blends of chloroprene polymers are obtained by modification with ethylene/carbon monoxide or sulfur dioxide copolymers containing an additional softening copolymerizable comonomer such as vinyl esters, alkyl acrylates and methacrylates, alkyl vinyl ether, acrylonitrile, methacrylonitrile etc. Modification with the ethylene copolymers results in improved processing, increased resistance-to-ozone and reduced cost.

MIXTURES OF RUBBER WITH GRAFT COPOLYMERS

Rubber mixture are disclosed wherein a graft copolymer(B) is mixed with a rubber (A) in an amount from 1 to 80% by weight, and wherein the graft monomers of(B) are identical of compatible with the monomers of the rubber (A) used for mixing.

SEPARATING AGENT FOR RUBBER POWDERS

A freeflowing rubber mixture which is stable against coalescence and cohesion comprising a vulcanisable rubber in powder form and a minor amount of an acrylonitrile polymer as a separating agent.

ADHESIVE COMPOSITION

RESIN-CONTAINING NEOPRENES AND NEOPRENE BLENDS

DYNAMICALLY CURED THERMOPLASTIC OLEFIN POLYMERS

NOVEL POLYCHLOROPRENE COMPOSITIONS

Essentially ETU-free cross linkable compositions comprising chloroprene rubber, a cross- linker and a vulcanization accelerator, which have a defined content of ions from the second or third main group and resinate anions and thus possesses improved curing characteristics, a process for vulcanization of such compositions and vulcanizates obtained thereby.

VULCANIZABLE CHLORINATED ELASTOMER COMPOSITIONS WITH IMPROVED PROCESSING SAFETY AND CURE RATE

The instant invention is an improved cure system composition and a method for curing chlorinated elastomer compositions. The cure system composition includes a polymercapto crosslinking agent, an inorganic base, and a quaternary ammonium salt. The quaternary ammonium salt has a formula selected from the group consisting of wherein R1 is an alkyl or aryl group containing between 4 and 12 carbon atoms; wherein R2 and R3 are independently alkyl or aryl groups containing between 1 and 8 carbon atoms; wherein the total number of carbon atoms on R2 and R3 are between 3 and 9; wherein R4 and R5 are methyl groups, and R6 is an alkyl group containing between 2 and 8 carbon atoms; and wherein X is an anion. The method for curing a chlorinated elastomer, composition according to instant invention includes the following steps: (1) providing a chlorinated elastomer composition; (2) providing a cure system composition as described above; (3) contacting said chlorinated elastomer composition with said ...

SOLVENT-CONTAINING COMPOSITIONS BASED ON POLYCHLOROPRENE

The invention relates to solvent-containing compositions based on polychloroprene, to solvent-containing zinc oxide dispersions which are stable in storage, to a process for their production, to their use in solvent-containing polychloroprene formulations and to their use as additives in contact adhesives for inorganic or organic substrates.

RUBBER COMPOSITION COMPRISING POLYVINYLPYRROLIDONE AND CELLULOSIC FIBERS AND RUBBER PRODUCTS USING SAME

Compositions useful for power transmission belts or hose which utilize environmentally friendly cellulosic reinforcing fibers. The elastomeric or rubber compositions include a base elastomer, polyvinylpyrrolidone, a cellulosic fiber, and a curative. The base elastomer may be one or more selected from ethylene elastomers, nitrile elastomers, and polychloroprene elastomers. The elastomer may be an ethylene-alpha-olefin elastomer. The polyvinylpyrrolidone may be present in an amount of 5 to 50 parts weight per hundred parts of the elastomer. The cellulosic fiber may be one or more selected from kenaf, jute, hemp, flax, ramie, sisal, wood, rayon, acetate, triacetate, and cotton. The cellulosic fiber may be a bast fiber. The cellulosic fiber is present in an amount of 1 to 50 parts weight per hundred parts of the elastomer.

CURABLE COMPOSITION FOR SOUND BARRIER FILM

A curable composition is provided comprising a curable rubber comprising: a) 80.0-99.9 wt% of a chloroprene resin; b) 0.06-13 wt% of trimethyl thiourea; and c) 0.06-13 wt% of a benzothiazolesulfenamide, such as N-cyclohexyl-2-benzothiazolesulfenamide. The present disclosure additionally provides cured compositions comprising a rubber comprising a crosslinked chloroprene resin and a fire retardant particle system comprising: d) 5-95 wt% particulate magnesium hydroxide (Mg(OH)2); and e) 5-95 wt% particulate aluminum trihydrate (Al(OH)3). In some embodiments the particulate aluminum trihydrate (Al(OH)3) has a mean particle size of greater than 30 microns and less than 400 microns, and more typically a mean particle size of greater than 82 microns. The present disclosure additionally provides sound barrier films comprising the cured compositions according to the present disclosure, in particular fire resistant sound barrier films.

LOW-SMOKE, FIRE-RESISTANT AND WATER-RESISTANT CABLE COATING

Cable coatings having effective low-smoke emission, fire resistance and moisture resistance provided by a single layer are described. The cable coatings contain an base polymer, a oxygen containing ethylene copolymer, a fire retardant and a synergistic blend of magnesium hydroxide and aluminum hydroxide. Cables coated with the described coatings have improved wet electrical performance, and satisfactory fire performance and smoke characteristics.

POLYCHLOROPRENE SOLID HAVING THIXOTROPIC PROPERTIES

The invention relates to a polychloroprene solid on the basis of a polychloroprene dispersion, said solid having thixotropic properties.

CURED BLENDS OF POLYCHLOROPRENE AND ETHYLENE COPOLYMERS

TITLE The subject invention provides a cured on-foamed composition consisting of (i) polychloroprene and (ii) 2-25% by weight of the polymer composition of a copolymer of ethylene and at least one alpha-beta unsaturated carboxylic acid (or ionomer) or ester thereof and a process for making the same. AD-5895 ...

POLYLACTIDE BLENDS

Polylactide Blends ABSTRACT OF THE DISCLOSURE Alloys comprising from about 60 to 98 weight % of a polymer of lactic acid and from 40 to 2 weight % of one or more polymeric extruders and/or organic elastomers have good flexibility and may be formed into useful articles. -l-

Verfahren zur Herstellung eines kautschukähnlichen Produktes.

Verfahren zur Herstellung eines als Gebrauchsgegenstand ausgebildeten Erzeugnisses mit ähnlichen Eigenschaften, wie sie Kautschuk besitzt, und nach diesem Verfahren hergestelltes Erzeugnis.

Klebstoff oder Kitt

Verfahren zum Veredeln von Textilmaterialien

Verfahren zur Herstellung von elastischen Formkörpern

DISPERSION.

Klebstoffe, Kitte, Spachtelmassen, Anstrichmassen und dergleichen

Formmassen aus thermoplastischen Kunststoffen

Verfahren zur Herstellung eines für Anstrichzwecke geeigneten mastizierten lagerbeständigen Polypropylen-Materials

Mélange pour la fabrication d'une couche barrière contre les ingrédients tachants dans un pneumatique à flanc blanc, et utilisation de ce mélange

Verfahren zur Herstellung eines Überzugsmittels

In Aerosolsprühbehältern verpackter Klebstoff

Geformtes gummiähnliches Vulkanisat und Verfahren zu dessen Herstellung

Dichtungsmasse zum Herstellen von Dichtungsringen oder Dichtungseinlagen

Verfahren zur Herstellung eines vernetzten Chloroprenpolymerisates

Aufsprühbare dispersion and procedure for flexible sticking of two substrate surfaces together.

was based A Polymer Latex Composition As.

Es ist ein Gegenstand der Erfindung, einen chloroprenkautschukbasierten Polymerlatex bereitzustellen, der eine gute Ausgewogenheit zwischen Anfangshaftung und Lagerstabilität aufweist und für Anwendungen als einkomponentiger wässeriger Klebstoff geeignet ist. Die Erfindung bezieht sich auf eine chloroprenkautschukbasierte Polymerlatexzusammensetzung, enthaltend eine Mischung von einem chloroprenkautschukbasierten Polymerlatex und einem Latex von einem acrylharzbasierten Polymer oder einem styrol/acrylharzbasierten Polymer, die durch Copolymerisation von einem spezifischen carboxylgruppenhaltigen ungesättigten Monomer erhalten sind, und worin die spezifische Carboxylgruppe mit einem Alkali neutralisiert ist.

Rubber compositions with building tack

The invention relates to a rubber composition comprising a natural or synthetic rubber or a mixture of such rubbers, a tackifier, and optionally further additives, wherein the tackifier is prepared from a rosin and an alkylphenol aldehyde resin of the resol type, which rubber composition has a good building tack and tack retention.

Anti-ageing rubber and preparation method thereof

导电性弹性体组合物、利用该组合物的导电性部件、具有该导电性部件的图像形成装置

... 本发明的导电性弹性体组合物的压缩永久变形等物性不会恶化，且具有作为辊等导电性部件的合适的硬度，既可抑制电阻的不均匀程度，又可实现较以往低的电阻值。本发明的导电性弹性体组合物含有离子导电性弹性体成分，并添加具有含氟基及磺酰基的阴离子的盐，在外加电压100V时测定的根据日本工业标准JIS K6911所载的体积电阻率为10#+[6.9][Ω・cm]以下，又，按照JIS K6262所载的“硫化橡胶及热塑性橡胶的永久变形试验方法”，在测定温度70℃、测定时间24小时、压缩率25％的条件下测定的压缩永久变形为30％以下，用JIS K6253所载的E型弹簧式硬度计测定的硬度为75度以下。此外，通过将该组合物与其他弹性体混合，既具备实用性能，又能得到10#+[8.5][Ω・cm]以下的体积电阻率。 ...

Horticultural ornament and preparation method thereof

High-strength impact-resistant cable sheath material and preparation method thereof

For unsaturated polymer vulcanizing composition

COMPOSITIONS FOR the MANUFACTURE OF TREADS Of PNEUMATIC ENVELOPES HAVING a LOW RESISTANCE OF BEARING

Carboxyl terminated polychloroprenes and compositions containing them

ELASTOMER REINFORCED WITH DISCONTINUOUS CELLULOSE

COMPOSITION INCLUDING/UNDERSTANDING a MIXTURE Of a SYNTHETIC ELASTOMER CHLORINATES AND Of an OIL EXTRACT BLOWS

MIXTURES OF RUBBER WITH COPOLYMERS CLERK'SS OFFICE

Mixtures of rubber reinforced by resins the phénolnovolaques ones, and manufactoring process of such resins

Ribbon of sealing

Process for obtaining an identical or similar matter or vulcanized natural rubber

AGENT OF SEPARATION FOR RUBBER POWDERS

Polychloroprene elastomer composition, and production method- and the vulcanizate and molded articles thereof

Provided is a polychloroprene elastomer composition superior in extrusion processability and mechanical properties, a production method thereof, and vulcanized and molded articles thereof. A polychloroprene elastomer composition, comprising 100 parts by mass of a polychloroprene elastomer containing a polychloroprene sol and a polychloroprene gel and 0.2 to 5 parts by mass of a thiuram compound, wherein the blending rate of the polychloroprene sol to the polychloroprene gel (sol/gel) is 30/70 to 80/20 by mass.

Compound, resin composition, and resin molded article

Disclosed is a compound represented by formula (1): wherein R 1 and R 3 each independently represent an alkylene group having 1 to 10 carbon atoms or an arylene group; R 2 and R 4 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an aryl group; and l, n and m each independently represent a natural number of 1 to 3.

Cold temperature-resistant chloroprene casing mixture

A casing mixture for a cable is provided having chloroprene with fillers and additives, particularly processing aids and softeners, as well as a cross-linking system, adhesion promoters, stabilizers, anti-aging agents, optionally coloring agents, which results after cross-linking in cold resistant and cold elastic vulcanizates which are suitable for extra heavy duty applications, for example, according to CSA Standard C22.2 No. 96-09 for moving lines for energy supply.

CHLOROPRENE RUBBER COMPOSITION, AND VULCANIZATE AND MOLDING THEREOF

To provide a chloroprene rubber composition providing good permanent compression set and excellent mechanical strength, a vulcanizate of the composition, and a molded article of the composition. 1. A chloroprene rubber composition comprising:a chloroprene rubber and a natural rubber in a total amount of 100 parts by mass;a block copolymer of styrene and butadiene in an amount of 0.1 to 10 parts by mass;ethylene thiourea in an amount of 0.1 to 3.0 parts by mass; anddipentamethylenethiuram tetrasulfide in an amount of 0.1 to 3.0 parts by mass.2. The chloroprene rubber composition according to claim 1 , wherein the block copolymer of styrene and butadiene includes styrene and butadiene in a mass ratio (styrene/butadiene) of 25/75 to 45/55.3. The chloroprene rubber composition according to claim 1 , wherein the chloroprene rubber includes a 2 claim 1 ,3-dichlorobutadiene unit in an amount of 5 to 20% by mass.4. The chloroprene rubber composition according to claim 1 , wherein the blending ratio of the chloroprene rubber and the natural rubber (chloroprene rubber/natural rubber) is 60/40 to 95/5 by mass ratio.5. A vulcanizate obtained by vulcanization of the chloroprene rubber composition according to .6. A molding obtained by vulcanization of the chloroprene rubber composition according to after or during molding of the composition.7. The molding according to claim 6 , wherein the molding is a wiper blade or a vibration isolator. This application is a national stage application of PCT Application No. PCT/JP2011/064120, filed Jun. 21, 2011, which claims the benefit of Japanese Application No. JP-2010-263795, filed Nov. 26, 2010, in the Japanese Intellectual Property Office, the disclosures of which are incorporated herein by reference.1. Field of the InventionThe present invention relates to a chloroprene rubber composition, a vulcanizate thereof, and a molding using them. More specifically, the present invention relates to a chloroprene rubber composition used for ...

Chloroprene rubber and chloroprene rubber composition

Provided is a chloroprene rubber superior in the effectiveness of preventing mold staining. The chloroprene rubber contains at least one compound selected from phosphite ester compounds (such as tris(nonylphenyl)phosphite ester and tributyl phosphite ester) and phosphate ester compounds (such as tri(nonylphenyl)phosphate ester and tributyl phosphate ester) in a total amount of 0.1 to 5.0 mass % and additionally at least one compound selected from sulfonic acid compounds (such as benzenesulfonic acid and dodecylbenzenesulfonic acid) and fatty acid compounds in a total amount of 0.1 to 3.0 mass %.

CHLOROPRENE RUBBER COMPOSITION AND VULCANIZATION MOLDED BODY

A chloroprene rubber composition containing 100 parts by mass of a chloroprene-based rubber, 0.5 to 5.0 parts by mass of a sulfur-based compound represented by General Formula (1) below, and more than 0 parts by mass and 2.0 parts by mass or less of a xanthogen disulfide compound represented by General Formula (2) below. 2. The chloroprene rubber composition according to claim 1 , wherein the sulfur-based compound comprises at least one selected from 4-methylthiazolidine-2-thione claim 1 , 3-methylthiazolidine-2-thione claim 1 , and 4-isopropyl-3-methylthiazolidine-2-thione.3. The chloroprene rubber composition according to claim 1 , wherein the xanthogen disulfide compound comprises at least one selected from dimethylxanthogen disulfide claim 1 , diethylxanthogen disulfide claim 1 , dipropylxanthogen disulfide claim 1 , diisopropylxanthogen disulfide claim 1 , dibutylxanthogen disulfide claim 1 , dipentylxanthogen disulfide claim 1 , dihexylxanthogen disulfide claim 1 , diheptylxanthogen disulfide claim 1 , and dioctylxanthogen disulfide.4. The chloroprene rubber composition according to claim 1 , wherein the chloroprene-based rubber comprises at least one selected from a 2-chloro-1 claim 1 ,3-butadiene homopolymer and a 2-chloro-1 claim 1 ,3-butadiene copolymer claim 1 , andthe 2-chloro-1,3-butadiene copolymer comprises a copolymer of 2-chloro-1,3-butadiene and at least one monomer selected from 2,3-dichloro-1,3-butadiene and acrylonitrile.5. A vulcanized molded article of the chloroprene rubber composition according to .6. A vulcanizate of the chloroprene rubber composition according to .7. The chloroprene rubber composition according to claim 1 , wherein the chloroprene-based rubber comprises a 2-chloro-1 claim 1 ,3-butadiene homopolymer.8. The chloroprene rubber composition according to claim 1 , wherein the chloroprene-based rubber comprises a copolymer of 2-chloro-1 claim 1 ,3-butadiene and acrylonitrile.9. The chloroprene rubber composition according to ...

Wiper blade element

The invention relates to a wiper blade element ( 10 ) for a wiper blade, for example of a motor vehicle. In order to minimize the running noise, said wiper blade element ( 10 ) comprises an elastomer material (A) which comprises a polymer blend from at least one ethylene-propylene-(diene)-rubber and at least one polymer, selected from the group consisting of polynorbornene, trans-polyoctenamer, polyisobutylene, chloroprene rubber, butyl rubber, chlorobutyl rubber, bromobutyl rubber and mixtures thereof. In the polymer blend, the weight ratio of ethylene-propylene-(diene) rubber and/or ethylene-propylene rubber to the at least one polymer is in a range of 40:60-95:5. The invention also relates to said type of elastomer material (A) and a wiper blade equipped with said type of wiper blade element ( 10 ).

Transmission V-Belt

A power transmission V-belt includes a tension member, an adhesion rubber layer in which at least part of the tension member is embedded, and a tension rubber layer and a compression rubber layer stacked via the adhesion rubber layer. A rubber hardness of the tension rubber layer is smaller than a rubber hardness of the compression rubber layer. In the adhesion rubber layer, a rubber hardness on a tension rubber layer side relative to the tension member is smaller than a rubber hardness on a compression rubber layer side. 1. A power transmission V-belt comprising a tension member , an adhesion rubber layer in which at least part of the tension member is embedded , and a tension rubber layer and a compression rubber layer stacked via the adhesion rubber layer ,wherein a rubber hardness of the tension rubber layer is smaller than a rubber hardness of the compression rubber layer, andin the adhesion rubber layer, a rubber hardness on a tension rubber layer side relative to the tension member is smaller than a rubber hardness on a compression rubber layer side.2. The power transmission V-belt according to claim 1 , having a thickness of from 6.5 to 8.5 mm.3. The power transmission V-belt according to claim 1 , wherein the rubber hardness of the adhesion rubber layer is from 74 to 85° and in the adhesion rubber layer claim 1 , a difference in rubber hardness between the tension rubber layer side and the compression rubber layer side is from 2 to 12°.4. The power transmission V-belt according to claim 1 , wherein the adhesion rubber layer is formed of a plurality of rubber layers claim 1 , a rubber hardness of a first adhesion rubber layer put into contact with the tension rubber layer is from 74 to 82° claim 1 , a rubber hardness of a second adhesion rubber layer put into contact with the compression rubber layer is from 77 to 85° claim 1 , and a difference in rubber hardness between the first adhesion rubber layer and the second adhesion rubber layer is from 2 to 10°.5. ...

ANTI-VIBRATION RUBBER

An anti-vibration rubber of the present invention is an anti-vibration rubber for washing machines. In temperature variance measurement of dynamic viscoelasticity at a frequency of 30 Hz, the anti-vibration rubber has a maximum loss factor at a temperature of −10° C. to 40° C., both inclusive, and has a loss factor of 0.4 or more in the entire temperature range of −10° C. to 40° C., both inclusive, at the frequency of 30 Hz. 1. A washing machine including an anti-vibration leg rubber , wherein:in a temperature variance measurement of dynamic viscoelasticity at a frequency of 30 Hz, said anti-vibration rubber has a maximum loss factor at a temperature of −10° C. to 40° C., both inclusive,said anti-vibration rubber has a loss factor of 0.4 or more in an entire temperature range of −10° C. to 40° C., both inclusive, at the frequency of 30 Hz,a compression permanent set of the anti-vibration rubber is 30% or less, andsaid anti-vibration leg rubber attached to corners of a base of the washing machine.2. The washing machine according to claim 1 , wherein:said anti-vibration rubber comprises a polymer component and a tackifying resin,said polymer component consisting essentially of butyl rubber, andsaid anti-vibration rubber comprises of 10 to 60 parts by mass of said tackifying resin, both inclusive, per 100 parts by mass of said polymer component.3. The washing machine according to claim 2 , wherein said butyl rubber comprises a halogenated butyl rubber.4. The washing machine according to claim 1 , wherein said anti-vibration rubber further comprises a metal oxide as a vulcanizing agent.5. The washing machine according to claim 1 , wherein said anti-vibration rubber comprises a vulcanized rubber.6. The washing machine according to claim 1 , wherein said anti-vibration rubber further comprises a processing aid. This application is a Continuation application of U.S. patent application Ser. No. 15/525,889, filed on May 10, 2017, which claims priority from PCT Application ...

CONDUCTIVE MEMBER FOR ELECTROPHOTOGRAPHIC APPARATUS

To provide a conductive roll for an electrophotographic apparatus that includes a conductive rubber elastic body layer having a lower hardness and lower settling properties than a conventional conductive rubber elastic body layer. 1. A conductive member for an electrophotographic apparatus , the member comprising a conductive rubber elastic body layer comprising: polar rubber; non-polar rubber; and a dispersing agent ,wherein the polar rubber comprises at least one of nitrile rubber, hydrin rubber, and chloroprene rubber,wherein the non-polar rubber comprises at least one of isoprene rubber, hydrogenated isoprene rubber, and natural rubber, andwherein the dispersing agent comprises at least one of a polymer comprising a block comprising a nitrile rubber component and a block comprising an isoprene rubber component, modified natural rubber, and modified isoprene rubber.2. The conductive member for an electrophotographic apparatus according to claim 1 ,wherein the content of the dispersing agent is within a range of 0.1 to 20 parts by mass relative to total 100 parts by mass of the polar rubber and the non-polar rubber.3. The conductive member for an electrophotographic apparatus according to claim 2 ,wherein the dispersing agent comprises at least one of epoxidized natural rubber and epoxidized isoprene rubber.4. The conductive member for an electrophotographic apparatus according to claim 3 , wherein the content ratio between the polar rubber and the non-polar rubber is claim 3 , in parts by mass claim 3 , within a range of 20:80 to 90:10.5. The conductive member for an electrophotographic apparatus according to claim 4 , wherein the conductive rubber elastic body layer comprises a first polymer phase comprising the polar rubber and a second polymer phase comprising the non-polar rubber claim 4 , the second polymer phase being present separated from the first polymer phase.6. The conductive member for an electrophotographic apparatus according to claim 5 , wherein ...

Terminated covered electric wire, wire harness, and anticorrosive agent

The object is to provide a terminated covered electric wire and a wire harness in which an anticorrosive agent comes into intimate contact with the surface of a terminal fitting and a high anticorrosive performance is exhibited in an electrical connection portion between an electric wire conductor and the terminal fitting even when oil adheres to the surface of the terminal fitting, and to provide an anticorrosive agent capable of exhibiting such a high anticorrosive performance. An electrical connection portion in which a terminal fitting having a surface to which processing oil adheres and an electric wire conductor of a covered electric wire are electrically connected to each other is covered with an anticorrosive agent containing an adhesive resin and an oil-adsorbing organic macromolecule to configure a terminated covered electric wire.

CHLOROPRENE RUBBER COMPOSITION AND ADHESIVE COMPOSITION USING SAID CHLOROPRENE RUBBER COMPOSITION

An object of the invention is to provide a chloroprene polymer composition resistant to discoloration under heat or light. Provided is a chloroprene rubber composition, prepared by carrying out emulsion polymerization in the presence of 0.5 to 7.0 parts by mass of a rosin acid salt as emulsifier and terminating the emulsion polymerization by addition of a polymerization inhibitor and a phosphorus- or phenol-based compound as antioxidant. It is possible according to the invention to obtain a chloroprene polymer composition superior in discoloration resistance under heat or light. The chloroprene polymer composition according to the present invention can be used favorably for adhesion of cloths, leathers, foamed sheets, papers, woods, shoe parts, and others.

PLASTICIZER FOR HALOGEN RESINS

The present invention relates to [1] a plasticizer for a halogen-based resin containing a mixture of didecyl phthalates each containing a linear or branched Calkyl group, in which a content of di-n-decyl phthalate in the mixture is not less than 48 mol % and not more than 70 mol %; [2] a plasticizer composition for a halogen-based resin containing the aforementioned plasticizer; and [3] a halogen-based resin composition containing a halogen-based resin and the aforementioned plasticizer. The plasticizer of the present invention has an excellent plasticizing effect on a halogen-based resin and at the same time, can exhibit excellent effects of improving all of productivity, processability, kneading properties and heat resistance without deterioration in the respective properties. 1. A plasticizer for a halogen-based resin comprising a mixture of didecyl phthalates each comprising a linear or branched Calkyl group , in which a content of di-n-decyl phthalate in the mixture is not less than 48 mol % and not more than 70 mol %.2. The plasticizer for a halogen-based resin according to claim 1 , wherein the Calkyl group is derived from at least one alcohol selected from the group consisting of n-decanol claim 1 , isodecanol claim 1 , 2-propyl-1-heptanol and 4-methyl-2-propyl-1-hexanol.3. The plasticizer for a halogen-based resin according to claim 1 , wherein the plasticizer contains the didecyl phthalate(s) other than di-n-decyl phthalate claim 1 , and the didecyl phthalate(s) other than di-n-decyl phthalate is at least one compound selected from the group consisting of di-1-methylnonyl phthalate claim 1 , di-1-ethyloctyl phthalate claim 1 , di-1-propylheptyl phthalate claim 1 , di-1-butylhexyl phthalate claim 1 , di-isodecyl phthalate claim 1 , di-2-propylheptyl phthalate claim 1 , di-4-methyl-2-propylhexyl phthalate claim 1 , n-decyl (1-methylnonyl) phthalate claim 1 , n-decyl (1-ethyloctyl) phthalate claim 1 , n-decyl (1-propylheptyl) phthalate claim 1 , n-decyl (1- ...

BLENDED RUBBER, BLENDED RUBBER COMPOSITION AND VULCANIZATE

Provided are a blended rubber and a blended rubber composition that give a vulcanizate superior in abrasion resistance and ozone resistance, and a vulcanizate prepared by vulcanizing the blended rubber composition. A blended rubber, comprising 30 to 93 mass % of a chloroprene rubber, 5 to 50 mass % of a soft polyvinyl chloride, and 2 to 20 mass % of an acrylonitrile-butadiene rubber. The polyvinyl chloride resin used preferably has a polymerization degree of 300 to 3000 and the acrylonitrile-butadiene rubber preferably has an acrylonitrile content of 18 to 50 mass %. 1. A blended rubber , comprising30 to 93 mass % of a chloroprene rubber,5 to 50 mass % of a soft polyvinyl chloride obtained by plasticizing a polyvinyl chloride with a plasticizer, and2 to 20 mass % of an acrylonitrile-butadiene rubber.2. The blended rubber according to claim 1 , wherein the polyvinyl chloride has a polymerization degree of 300 to 3000.3. The blended rubber according to claim 1 , wherein the soft polyvinyl chloride is obtained by plasticizing 100 parts by mass of the polyvinyl chloride with 30 to 150 parts by mass of the plasticizer.4. The blended rubber according to claim 1 , wherein the plasticizer is at least one compound selected from phthalic ester- claim 1 , adipic acid- claim 1 , chlorinated paraffin- claim 1 , sebacic acid- claim 1 , polyester- claim 1 , phosphate ester- claim 1 , polyether ester- claim 1 , and trimellitic acid-based plasticizers.5. The blended rubber according to claim 1 , wherein the acrylonitrile-butadiene rubber contains acrylonitrile at a rate of 18 to 50 mass %.6. A blended rubber composition claim 1 , comprising the blended rubber according to and a vulcanization accelerator.7. The blended rubber composition according to claim 6 , comprising the vulcanization accelerator in an amount of 0.5 to 5 parts by mass with respect to 100 parts by mass of the blended rubber.8. The blended rubber composition according to claim 6 , wherein the vulcanization ...

ARTICLES COMPRISING CROSSLINKED POLYMER NETWORK COMPRISING THIOETHER CROSSLINKS AND PROCESS OF MAKING AND USING SAME

The present invention relates to articles comprising crosslinked polymer network comprising thioether crosslinks and process of making and using same. Such thiol-ene crosslinking reactions not only make the isocyanate crosslinking reaction unnecessary, but they also improve the article's strength due to chemical crosslinking between the article's resin layers, and reduce or eliminate post curing. Thus resulting in a sufficiently cured article in a much shorter time. 1. An article comprising a crosslinked polymer network , said crosslinked polymer network comprising:a) thioether crosslinks, said thiol of said thioether crosslinks being derived from a polythiol crosslinker is selected from the group consisting of 1,4-butanedithiol; 4,5-bis(mercaptomethyl)-o-xylene; 1,4-benzenedithiol; 4,4′-biphenyldithiol; 1,3,5-benzenetrithiol; 2,3-butanedithiol; 1,3-benzenedithiol; 1,10-decanedithiol; DL-dithiothreitol; dithioerythritol; 1,5-dimercaptonaphthalene; 3,6-dioxa-1,8-octanedithiol; 3,7-dithia-1,9-nonanedithiol; 1,2-ethanedithiol; 1,6-hexanedithiol; bis(2-mercaptoethyl) sulfide; 1,8-octanedithiol; 1,9-nonanedithiol 1,3-propanedithiol; 1,5-pentanedithiol; 4,4′-thiobisbenzenethiol; tetra(ethylene glycol) dithiol; 1,11-undecanedithiol; hexa(ethylene glycol) dithiol; 1,16-hexadecanedithiol, thiol-functional polymers and mixtures thereof,b) said polymer network being derived from a polydiene polymer, polydiene copolymer, hydrogenated vinyl ether-terminated polyolefin and/or vinyl ether terminated poly(tetramethylene oxide).2. An article according to claim 1 , wherein said polymer network has a crosslink density of from about 1×10mol/cmto about 0.01 mol/cm.3. The article of claim 1 , said article comprising one or more entrained adjuncts claim 1 , said one or more entrained adjuncts being selected from the group consisting of acetamide claim 1 , acetyltributylcitrate claim 1 , benzyl benzoate claim 1 , benzyl butyl phthalate claim 1 , bis(2-ethylhexyl) adipate claim 1 , bis(2- ...

VULCANIZATION COMPOSITION FOR UNSATURATED POLYMERS

The present invention relates to the field of the vulcanization of unsaturated polymers, in particular unsaturated halogenated polymers and more particularly unsaturated chlorinated polymers, such as, for example, polychloroprene, by using, as vulcanization agent, a mixture of bis(2,5-dimercapto-1,3,4-thiadiazole) and at least one organic base. The present invention relates to the process for the vulcanization of the said polymers with the said vulcanization mixture. 18-. (canceled)9. A composition for the vulcanization of unsaturated polymers , comprising a mixture of bis(2 ,5-dimercapto-1 ,3 ,4-thiadiazole) and at least one organic base.10. The composition according to claim 9 , wherein the at least one organic base is chosen from nitrogenous organic bases.11. The composition according to claim 10 , wherein the at least one organic base comprises a guanidine.12. The composition according to claim 10 , wherein the at least one organic base comprises a substituted guanidine.13. The composition according to claim 12 , wherein the at least one organic base is a guanidine substituted by one or more aryl groups.14. The composition according to claim 12 , wherein the at least one organic base comprises diphenylguanidine.15. The composition according to claim 9 , wherein the bis(2 claim 9 ,5-dimercapto-1 claim 9 ,3 claim 9 ,4-thiadiazole) to organic base molar ratio is between 1:99 and 99:1.16. The composition according to claim 15 , wherein the bis(2 claim 15 ,5-dimercapto-1 claim 15 ,3 claim 15 ,4-thiadiazole) to organic base molar ratio is between 25:75 and 75:25.17. The composition according to claim 15 , wherein the bis(2 claim 15 ,5-dimercapto-1 claim 15 ,3 claim 15 ,4-thiadiazole) to organic base molar ratio is approximately 50:50.18. A process for the vulcanization of an unsaturated polymer claim 15 , comprising:mixing the unsaturated polymer with a mixture of bis(2,5-dimercapto-1,3,4-thiadiazole) and at least one organic base, andvulcanizing the unsaturated ...

INTER-PENETRATING ELASTOMER NETWORK DERIVED FROM GROUND TIRE RUBBER PARTICLES

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 polymeric matrix comprising a crosslinked network of end-of-life tire-derived rubber and at least one auxiliary polymer , wherein a reactive moiety of the auxiliary polymer is reacted with a polyaromatic hydrocarbon so as to form a chemical bond , whereby the polymeric matrix sequesters the polyaromatic hydrocarbon.2. The polymeric matrix of claim 1 , wherein the auxiliary polymer is selected from the group consisting of a functionalized butadiene claim 1 , a functionalized virgin natural rubber and claim 1 , a functionalized styrene butadiene/butadiene rubber.3. The polymeric matrix of claim 1 , wherein the end-of-life tire-derived rubber and the auxiliary polymer have different backbone chemistries.4. The polymeric matrix of claim 1 , having an effective particle size of less than 5 microns.5. The polymeric matrix of claim 1 , wherein the at least one auxiliary polymer comprises an epoxide group as the moiety.6. The polymeric matrix of claim 1 , in a form of a sheet.7. The polymeric matrix of claim 6 , exhibiting an anisotropy in length tensile strength to width tensile strength claim 6 , wherein the anisotropy in length tensile strength to width tensile strength is at least 1.1:1.8. The polymeric matrix of claim 1 , in a form of laminated sheets claim 1 , wherein each of the sheets has a thickness of from 10 to 70 microns claim 1 , and wherein each of the sheets is oriented 30 to 45 degrees to an anisotropic grain of an adjacent sheet.9. The polymeric matrix of claim 1 , in a form of an article selected from the ...

Aqueous dispersion, and laminate, adhesive for footwear, and footwear made using same

An aqueous dispersion including an acid-modified polyolefin resin (A) having a content of an unsaturated carboxylic acid component of 0.1 to 10% by mass, a rubber component (B), a tackifier component (C) and an aqueous medium, wherein in relation to 100 parts by mass of the acid-modified polyolefin resin (A), the content of the rubber component (B) is 5 to 1900 parts by mass, and in relation to 100 parts by mass of the total amount of the acid-modified polyolefin resin (A) and the rubber component (B), the content of the tackifier component (C) is 5 to 300 parts by mass.

METHOD FOR PRODUCING A WIPER BLADE ELEMENT COMPRISING A COMPOSITE LAYER MADE OF A PARTICLE LAYER AND A FRICTION-REDUCING MATERIAL

The present invention relates to a method for producing a wiper blade element () for a wiper blade and/or a wiper blade having a wiper blade element (), in particular for a windscreen wiper. In order to provide simple and economical wiper blade elements and wiper blades having excellent properties, in particular having high wiping quality, high abrasion resistance, a high degree of friction reduction and miming noise reduction and a long service life, in said method a particle layer () is applied to an elastomer substrate (), the elastomer substrate () is vulcanised with the particle layer () deposited thereon, and, after vulcanisation, a friction-reducing material () is applied to the particle layer (). The invention further relates to a wiper blade element and wiper blade produced in such a way. 11010. A process for the production of a wiper rubber () for a wiper blade and/or of a wiper blade with a wiper rubber () , the process comprising{'b': ['12', '11'], '#text': 'applying a particle layer () to an elastomer substrate (),'}{'b': ['11', '12'], '#text': 'vulcanizing the elastomer substrate () with the particle layer () applied thereon, and'}{'b': ['13', '12'], '#text': 'after vulcanization, applying a friction-reducing material () to the particle layer ().'}212. The process as claimed in claim 1 , where the particle layer () is a particle monolayer.312. The process as claimed in claim 1 , where the particle layer () is configured in the form of a non-continuous layer.413121112. The process as claimed in claim 1 , where the friction-reducing material () is applied between particles of the particle layer () and/or on surface regions of the elastomer substrate () which are accessible between particles of the particle layer ().5131212. The process as claimed in claim 1 , where the friction-reducing material () completely fills interstices between particles of the particle layer () and/or converts the particle layer () originally configured in the form of a non- ...

Rubber composition

According to the rubber composition of the present invention comprising 0.1 to 10 parts by mass of ω-9 fatty acid amide and 0.1 to 100 parts by mass of an adhesive resin based on 100 parts by mass of a rubber component, the rubber composition being excellent in processability, mold release characteristics and abrasion resistance can be provided.

PHASE CHANGE HEAT STORAGE RUBBER, METHOD FOR PREPARING THE SAME, AND USING METHOD THEREOF

A phase change heat storage rubber includes 20-70 parts by weight of rubber and 10-68 parts by weight of modified phase change powder. The rubber contains a suitable amount of the modified phase change powder, so that the phase change heat storage rubber has excellent heat absorption and heat storage performance. Its phase change enthalpy reaches 15-200 J/g, its specific heat capacity exceeds 2.0 J/g·K, satisfying the requirements of batteries and capacitors for heat absorption and heat storage performance. The modified phase change powder has heat absorption and energy storage functions. Because of a large phase change enthalpy value and a slow temperature rise, the phase change heat storage rubber may absorb more heat. The phase change powder has been modified by a modifier. The modifier is a powder that has a large specific surface area and contains micropores. 1. A phase change heat storage rubber , comprising:20-70 parts by weight of rubber; and10-68 parts by weight of a modified phase change powder;wherein a method for preparing the modified phase change powder comprises:heating and melting a phase change powder to get a melted phase change powder;adding a modifier to the melted phase change powder in an amount of 2%-40% by weight of the phase change powder to get a mixture;keeping the mixture warm in a water bath or an oil bath;vibrating the mixture warmed in the water bath or the oil bath with a vibrating sieve; andgrinding the mixture with a ball mill or a sand mill to obtain the modified phase change powder;wherein the rubber is NBR;wherein the phase change powder is any one or a combination of an alkane wax, fatty acid, a PE wax, and polyethylene glycol;wherein the modifier is any one or a combination of expanded graphite, a nano silica micro powder, and a hollow microsphere powder.2. The phase change heat storage rubber according to claim 1 , further comprising 10 to 50 parts of a flame retardant that is one or a combination of a phosphorus-based flame ...

Passive Nose Warming Apparatus and Safeguard

A self-adhering, moldable and yet semi-rigid safeguard for the nose that does not require straps or bands, which also simultaneously protects a person's nose from inclement weather. 1. An adhesive, moldable and semi rigid device for the passive warming and protection of a person's nose that does not require straps or bands. The apparatus is comprised of three layers. The layers are adhered to one another with a polychloroprene adhesive. The invention itself adheres to the person's nose using a temporary nonionic polymer in conjunction with the customized fit gained from the low temperature moldable plastic centered between two layers of polychloroprene. 1. Nose Warmer and Nose Protector.A self adhering, moldable, and semi-rigid protective attachment for the nose that does not require straps or bands and protects against inclement weather.Current protective patented apparatuses for the nose provide zero combined moldability and adhesive properties. Current patented apparatuses attach to the nose by means of a strap or band as opposed to this application's use of a low temperature moldable plastic and non-ionic polymer adhesion combination rather than straps, bands or ear supports.Other patents also lack the proper material to retain warmth as most materials used are highly porous materials that provide little heat retention or adverse weather protection (e.g. fleece or wool).For example, U.S. Pat. No. 6,070,265 (expired) uses a strap or band to attach a nose protecting apparatus to the person's nose. It is also made from fleece, a highly porous material.Patent number JP2007098092 uses a chemical reaction for the heating of the nose and large portion of the front facial region; it also envelopes more than just the nose and uses a foldable (not moldable) strap that hugs the side of a person's face.Further analysis shows that U.S. Pat. No. 5,697,100A (expired) directly attaches to a persons ski goggles using hook type fasteners.This invention will be described by ...

TRANSMISSION BELT

A power transmission belt includes a belt body at least portion of which is made of a rubber composition containing a rubber component, cellulose-based fine fibers, and cotton powder. 1. A power transmission belt comprising:a belt body at least portion of which is made of a rubber composition containing a rubber component, cellulose-based fine fibers, cotton powder, and carbon black, whereina content of the carbon black in the rubber composition is 5 parts by mass or more to 30 parts by mass or less relative to 100 parts by mass of the rubber component.2. The power transmission belt of claim 1 , whereinthe rubber component includes chloroprene rubber.3. The power transmission belt of claim 1 , whereinthe cellulose-based fine fibers include cellulose-based fine fibers formed by mechanically-defibrating means.4. The power transmission belt of claim 1 , whereina content of the cellulose-based fine fibers in the rubber composition is 0.1 parts by mass or more to 20 parts by mass or less relative to 100 parts by mass of the rubber component.5. The power transmission belt of claim 1 , whereinthe cotton powder has a fiber length of 500 μm or less.6. The power transmission belt of claim 1 , whereina content of the cotton powder in the rubber composition is 0.1 parts by mass or more to 20 parts by mass or less relative to 100 parts by mass of the rubber component.7. The power transmission belt of claim 1 , whereinthe content of the cotton powder in the rubber composition is equal to or greater than the content of the cellulose-based fine fibers.8. The power transmission belt of claim 7 , whereina ratio of the content of the cotton powder to the content of the cellulose-based fine fibers in the rubber composition is 1.0 or more to 5.0 or less.9. The power transmission belt of claim 1 , whereina sum of the content of the cotton powder and the content of the cellulose-based fine fibers in the rubber composition is 5 parts by mass or more to 20 parts by mass or less relative to ...

Durable and Flexible Pet Toy

A durable and flexible pet toy may be made from special combinations of elastomeric materials, by selecting those materials useful for making strong, long-lasting flexible toys with rubberlike quality. The quality of a durable and flexible pet toy is in that it remains in its original form, for the most part, even after strong chewing and strong pulling by pets. It may also be long-lasting entertainment for pets, due to the resilient quality. This toy may withstand constant mechanical force imposed by strong pets, such as dogs. Embodiments of this toy may come in various colors, shapes and sizes, flavors and different textures. Additionally, different objects may be attached to the durable and flexible pet toy. For example, a rope or a bell, or another durable and flexible pet toy. 1. A durable and flexible pet toy , comprising a hollow flexible body , made from elastomeric materials having elongate percentage of at least 300 percent.2. The durable and flexible pet toy of claim 1 , wherein said flexible body is constructed of amorphous elastomeric material.3. The durable and flexible pet toy of claim 2 , wherein said amorphous elastomeric material has a minimum tensile strength of 13 p.s.i.4. The durable and flexible pet toy of claim 1 , wherein said flexible body is constructed from a combination of materials consisting of least one amorphous elastomer.5. The durable and flexible pet toy of claim 1 , wherein said flexible body is resistant to oxygen claim 1 , heat claim 1 , water claim 1 , ozone claim 1 , and steam.6. The durable and flexible body of claim 1 , wherein said flexible body further comprises a viscoelastic outer surface.7. The durable and flexible pet toy of claim 6 , wherein said viscoelastic outer surface has walls constructed essentially out of a single integral piece of elastomeric material. This disclosure generally relates to a durable and flexible pet toy.Pet toys are intended to keep a pet occupied for hours at a time. Some pets need pet toys ...

COMPOUND FOR CABLE JACKETS

A crosslinkable polymer mixture is provided based on a chlorinated polymer, in particular based on sulfur-free polymer. It can be used for the production of cables and lines via extrusion and subsequent crosslinking, in particular via heat and/or irradiation. A process is provided for the production of cables and lines with such a polymer mixture, which following production via mixing of the ingredients is extruded and crosslinked. A feature of the polymer mixture is that, prior to the extrusion and crosslinking that follow production thereof via mixing, it is stable in storage. 1. Crosslinkable polymer mixture for use as sheathing mixture for electrical and/or optical cables and lines which has polychloroprene content comprising:as polymer, 100 phr of polychloroprene which. comprises from 0 to 40 phr content of natural rubber (NR) and/or styrene-butadiene rubber (SBR),from 20 to 100 phr of mineral filler,optionally colorant,at least one plasticizer,anti-aging agent,from 3 to 16 phr of processing aid,optionally from 0.5 to 4.0 phr of coupling agent,a crosslinking system which comprises from 0.3 to 2.0 phr of methyl-2-mercaptobenzimidazole, from 0.5 to 4.0 phr of silane, from 0.5 to 4.0 phr of 3-methyl-2-thiazolidinethione and from 0.3 to 2 phr of 2-mercaptobenzothiazole disulfide,from 3 to 6 phr of stabilizer,from 3 to 6 phr of ZnO as catalyst.2. Polymer mixture according to claim 1 , wherein no N claim 1 ,N′-ethylenethiourea is present.3. Polymer mixture according to claim 1 , wherein the polymer is composed of 100 phr of sulfur-free polychloroprene.4. Polymer mixture according to claim 1 , characterized in that the mineral filler comprises from 40 to 100 phr of silica.5. Polymer mixture according to claim 1 , wherein the mineral filler comprises from 5 to 40 phr of kaolin.6. Polymer mixture according to claim 1 , wherein from 2 to 30 phr of the plasticizer is present.7. Polymer mixture according to claim 1 , wherein from 2 to 10 phr of anti-aging agent is present. ...

HOSE RUBBER COMPOSITION AND HOSE

A hose rubber composition and hose having improved crack resistance while ensuring flame retardance are provided. The hose rubber composition includes: a rubber component including 70 parts by mass or more chloroprene rubber in 100 parts by mass the rubber component; and 45 parts to 65 parts by mass carbon black with respect to 100 parts by mass the rubber component, wherein the carbon black has an iodine adsorption number of 20 mg/g to 100 mg/g, and a DBP oil absorption number of 50 mL/100 g to 150 mL/100 g. 1. A hose rubber composition comprising:a rubber component including 70 parts by mass or more chloroprene rubber in 100 parts by mass the rubber component; and45 parts to 65 parts by mass carbon black with respect to 100 parts by mass the rubber component,wherein the carbon black has an iodine adsorption number of 20 mg/g to 100 mg/g, and a DBP oil absorption number of 50 mL/100 g to 150 mL/100 g.2. The hose rubber composition according to claim 1 , comprising45 parts to 60 parts by mass the carbon black with respect to 100 parts by mass the rubber component.3. The hose rubber composition according to claim 1 ,wherein the carbon black has an iodine adsorption number of 40 mg/g to 60 mg/g, and a DBP oil absorption number of 100 mL/100 g to 130 mL/100 g.4. The hose rubber composition according to claim 1 ,wherein the rubber composition further includes butadiene rubber and styrene-butadiene rubber.5. The hose rubber composition according to claim 4 ,wherein 5 parts to 15 parts by mass the butadiene rubber and 5 parts to 25 parts by mass the styrene-butadiene rubber are included in 100 parts by mass the rubber component.6. The hose rubber composition according to claim 1 , further comprising5 parts to 25 parts by mass silica with respect to 100 parts by mass the rubber component.7. The hose rubber composition according to claim 1 , further comprising20 parts by mass or less a plasticizer with respect to 100 parts by mass the rubber component.8. A hose comprising a ...

HOSE RUBBER COMPOSITION AND HOSE

The hose rubber composition of this disclosure is a hose rubber composition comprising an organic compound, the hose rubber composition obtainable by compounding a compounding ingredient to a rubber component, wherein: a chloroprene rubber is contained at an amount of less than 70 parts by mass in 100 parts by mass of the rubber component; a chlorinated polymer other than chloroprene rubber is contained in the rubber component as an optional component; a sulfur and, as an optional component, a chlorinated compounding ingredient are contained in the compounding ingredient; and a relation (1) is satisfied: 1. A hose rubber composition comprising an organic compound , the hose rubber composition obtainable by compounding a compounding ingredient to a rubber component , wherein:a chloroprene rubber is contained at an amount of less than 70 parts by mass in 100 parts by mass of the rubber component;a chlorinated polymer other than chloroprene rubber is contained in the rubber component as an optional component;a sulfur and, as an optional component, a chlorinated compounding ingredient are contained in the compounding ingredient; and {'br': None, 'sub': k=1', 'k', 'k, 'sup': 'n', 'i': A', 'X', 'Y, 'Σ>0.2·\u2003\u2003(1)'}, 'a relation (1) is satisfied{'sub': k', 'k, 'where Arepresents a chlorination ratio without unit of each type of the chloroprene rubber, the chlorinated polymer other than chloroprene rubber or the chlorinated compounding ingredient, as a chlorinated compound contained in the hose rubber composition; Xrepresents a content in terms of mass % of each type of the chlorinated compound in the hose rubber composition; n represents a total number of types of the chlorinated compound in the hose rubber composition; and Y represents a total content in terms of mass % of the organic compound and the sulfur in the hose rubber composition.'}2. The hose rubber composition according to claim 1 , wherein:a difference between a left side and a right side in the ...

TRANSMISSION BELT

A power transmission belt is at least partially formed of a rubber composition. The rubber composition contains a rubber component, cellulose nanofibers, and carbon black. The amount of the cellulose nanofibers to be added is from 0.1 parts by mass to 20 parts by mass, relative to 100 parts by mass of the rubber component. The amount of the carbon black to be added is from 5 parts by mass to 80 parts by mass, relative to 100 parts by mass of the rubber component. The sum of the amount of the carbon black to be added and three times the amount of the cellulose nanofibers to be added is from 15 to 90. 1. A power transmission belt at least partially comprising a rubber composition , whereinthe rubber composition contains a rubber component, cellulose nanofibers, carbon black, and short fibers,the amount of the cellulose nanofibers to be added is from 0.1 parts by mass to 20 parts by mass, relative to 100 parts by mass of the rubber component,the amount of the carbon black to be added is 5 parts by mass or more, relative to 100 parts by mass of the rubber component, andthe sum of the amount of the carbon black to be added and three times the amount of the cellulose nanofibers to be added is from 25 to 43.2. The power transmission belt of claim 1 , wherein the cellulose nanofibers have an average fiber diameter from 1 nm to 200 nm.3. The power transmission belt of claim 1 , wherein the carbon black has a nitrogen specific surface area of 120 m/g or less.4. The power transmission belt of claim 1 , whereinthe rubber component is at least one of an ethylene propylene copolymer, an ethylene-propylene-diene terpolymer, an ethylene-octene copolymer, and ethylene-butene copolymer, a chloroprene rubber, a chlorosulfonated polyethylene rubber, or a hydrogenated acrylonitrile rubber.5. The power transmission belt of claim 1 , whereinthe cellulose nanofibers comprises TEMPO-oxidized cellulose nanofibers.6. The power transmission belt of claim 1 , whereinthe fiber diameters of the ...

ELASTOMERIC ARTICLES WITH IMPROVED PROPERTIES

An air spring having an airsleeve, wherein at least one layer of said airsleeve includes the vulcanization product of a composition that includes an unsaturated chlorinated polymer; and a saturated chlorinated polymer. 1. An air spring having an airsleeve , wherein at least one layer of said airsleeve includes the vulcanization product of a composition that includesan unsaturated chlorinated polymer; anda saturated chlorinated polymer.2. The air spring of claim 1 , where the unsaturated chlorinated polymer includes unsaturated chlorinated polyolefin.3. The air spring of claim 1 , where the unsaturated chlorinated polymer includes unsaturated chlorinated polyethylene.4. The air spring of claim 1 , where the saturated chlorinated polymer may be characterised by a Mooney viscosity (ML 1+4/100° C.) of from about 40 to about 130.5. The air spring of claim 1 , where the saturated chlorinated polymer includes from about 10 to about 50 wt. % of chlorine claim 1 , based upon the total weight of the saturated chlorinated polymer.6. The air spring of claim 1 , where the saturated chlorinated polymer includes a homopolymer or copolymer of chloroprene.7. The air spring of claim 1 , where the saturated chlorinated polymer may be characterized by a Mooney viscosity (ML1+4 at 100° C.) of from about 25 to about 150.8. The air spring of claim 1 , where the composition comprises from about 5 to about 30 phr of a saturated chlorinated polymer.9. The air spring of claim 1 , where the weight ratio of saturated to unsaturated chlorinated polymer is from about 1:20 to about 1:1.10. The air spring of claim 1 , where the composition further comprises a sulfur-based curative.11. The air spring of claim 1 , where the composition further comprises at least 0.1 phr zinc oxide.12. The air spring of claim 1 , where the saturated chlorinated polymer includes less than about 1 wt. % sulfur.13. The air spring of claim 1 , where the saturated chlorinated polymer is devoid of sulfur.14. An air spring ...

ARTICLE, IN PARTICULAR AIR SPRING BELLOWS, A METAL-RUBBER ELEMENT, OR A VIBRATION DAMPER

The invention relates to an article having a single-layered or multilayered main body having elastic properties, in particular an air spring bellows, a metal-rubber element or a vibration damper. 15.-. (canceled)6. An article comprising a multilayered main body having elastic properties , wherein at least one layer D of the main body is constructed from a rubber mixture which is devoid of halogen-containing flame retardants and contains at least one carbon black having a BET surface area according to DIN-ISO 9277 of from 35 to 140 m/g and an oil absorption number (OAN) according to ISO 4656 between 70 and 140 ml/100 g.7. The article as claimed in claim 6 , wherein the amount of carbon black is from 5 to 30 phr.8. The article as claimed in claim 6 , wherein the rubber mixture of the layer D additionally contains zinc hydroxystannate claim 6 , or zinc stannate claim 6 , or a combination of zinc hydroxystannate and zinc stannate.9. The article as claimed in claim 6 , wherein the layer D contains 100 phr of CR claim 6 , or a blend of CR and NR (CR/NR) claim 6 , as the rubber mixture.10. The article as claimed in claim 6 , wherein the article is an air spring bellows claim 6 , a metal-rubber element claim 6 , a vibration damper claim 6 , a damping element of a bearing claim 6 , a damping element of a bushing claim 6 , a damping element of a multilayered spring claim 6 , a damping element of a conical spring claim 6 , a tubular body claim 6 , or a drive belt.11. The article as claimed in claim 6 , wherein the article is an air spring bellows.12. The article as claimed in claim 6 , wherein the layer D is the outermost layer of the multilayered main body.13. The article as claimed in claim 6 , wherein the layer D does not completely envelop the main body and partially present in places exposed to fire risk.14. The article as claimed in further comprising a layer A which forms an inner cap and which comprises an elastomer mixture.15. The article as claimed in claim 14 , ...

HOSE RUBBER COMPOSITION AND HOSE

This disclosure aims to provide a hose rubber composition capable of ensuring the flame retardance and simultaneously achieving both the tear resistance and the flexibility after vulcanization. The hose rubber composition of this disclosure comprises a rubber component and a carbon black, wherein: a chloroprene rubber is contained at an amount of 60 parts by mass or more in 100 parts by mass of the rubber component; the carbon black is compounded at an amount of more than 30 parts by mass and less than 80 parts by mass per 100 parts by mass of the rubber component; and the carbon black contains 13 mass % or more of a specific carbon black having an iodine adsorption of 100 to 160 mg/g and a DBP oil absorption of 70 to 180 mL/100 g. 1. A hose rubber composition comprising a rubber component and a carbon black , wherein:a chloroprene rubber is contained at an amount of 60 parts by mass or more in 100 parts by mass of the rubber component;the carbon black is compounded at an amount of more than 30 parts by mass and less than 80 parts by mass per 100 parts by mass of the rubber component; andthe carbon black contains 13 mass % or more of a specific carbon black having an iodine adsorption of 100 to 160 mg/g and a DBP oil absorption of 70 to 180 mL/100 g.2. The hose rubber composition according to claim 1 , wherein:the chloroprene rubber is contained at an amount of 70 parts by mass or more in 100 parts by mass of the rubber component.3. The hose rubber composition according to claim 1 , wherein:the carbon black contains a carbon black of FEF class and a carbon black of ISAF class.4. The hose rubber composition according to claim 1 , wherein:the rubber component further contains at least any one among a styrene-butadiene rubber and a butadiene rubber.5. The hose rubber composition according to claim 1 , wherein:silica is further compounded at an amount of 5 parts to 25 parts by mass per 100 parts by mass of the rubber component.6. The hose rubber composition according to ...

HOSE RUBBER COMPOSITION AND HOSE

The hose rubber composition of this disclosure comprises a rubber component, a carbon black and a plasticizer component, wherein: a chloroprene rubber is contained at an amount of 60 parts by mass or more in 100 parts by mass of the rubber component; the carbon black is compounded at an amount of more than 50 parts by mass in 100 parts by mass of the rubber component; and the plasticizer component contains a flame retardant plasticizer, the flame retardant plasticizer being compounded at an amount of 2 parts by mass or more in 100 parts by mass of the rubber component. 1. A hose rubber composition comprising a rubber component , a carbon black and a plasticizer component , wherein:a chloroprene rubber is contained at an amount of 60 parts by mass or more in 100 parts by mass of the rubber component;the carbon black is compounded at an amount of more than 50 parts by mass per 100 parts by mass of the rubber component; andthe plasticizer component contains a flame retardant plasticizer, the flame retardant plasticizer being compounded at an amount of 2 parts by mass or more per 100 parts by mass of the rubber component.2. The hose rubber composition according to claim 1 , wherein:the flame retardant plasticizer is at least any one among a chlorinated aliphatic compound and a phosphate ester compound.3. The hose rubber composition according to claim 2 , wherein:the flame retardant plasticizer is at least any one among a chlorinated paraffin and a halogenated phosphate ester compound.4. The hose rubber composition according to claim 1 , wherein:the flame retardant plasticizer is compounded at an amount of 2 parts to 25 parts by mass per 100 parts by mass of the rubber component.5. The hose rubber composition according to claim 1 , wherein:the carbon black is compounded at an amount of 65 parts by mass or more per 100 parts by mass of the rubber component.6. The hose rubber composition according to claim 1 , wherein:the carbon black has an iodine adsorption of 20 to 160 ...

VIBRATIONPROOF RUBBER COMPOSITION, VULCANIZED MOLDED BODY, AND VIBRATIONPROOF RUBBER

A vibrationproof rubber composition capable of obtaining a vibrationproof rubber having a specific hardness and an excellent balance of mechanical properties, vibrationproof properties, and a friction coefficient, a vulcanized molded body obtained by vulcanizing the vibrationproof rubber composition, and vibrationproof rubber is provided. A vibrationproof rubber composition comprising: 100 parts by mass of xanthogen-modified chloroprene rubber; 0.5 to 2 parts by mass of stearic acid amide; and 4 to 5 parts by mass of erucic acid amide, wherein: the vibrationproof rubber composition further comprises carbon black with an average primary particle diameter of 60 to 470 nm, and a molded body obtained by vulcanizing the vibrationproof rubber composition has a type A durometer hardness of 50 to 70 is provided. 1. A vibrationproof rubber composition comprising:100 parts by mass of xanthogen-modified chloroprene rubber;0.5 to 2 parts by mass of stearic acid amide; and4 to 5 parts by mass of erucic acid amide, wherein:the vibrationproof rubber composition further comprises carbon black with an average primary particle diameter of 60 to 470 nm, and a molded body obtained by vulcanizing the vibrationproof rubber composition has a type A durometer hardness of 50 to 70.2. The vibrationproof rubber composition of claim 1 , wherein the vibrationproof rubber composition comprises 20 to 120 parts by mass of the carbon black with an average primary particle size of 60 to 470 nm with respect to 100 parts by mass of the xanthogen-modified chloroprene rubber.3. The vibrationproof rubber composition of claim 1 , wherein the carbon black with an average primary particle size of 60 to 470 nm comprises first carbon black with an average primary particle size of 60 to 80 nm and/or second carbon black with an average primary particle size of more than 80 nm and 470 nm or less.4. The vibrationproof rubber composition of claim 3 , wherein the vibrationproof rubber composition comprises 20 to 64 ...

Curable rubber composition

A rubber composition containing based upon parts by weight per 100 parts by weight rubber (phr): (A) 20-50 phr of a copolymer of ethylene, at least one C3 to C23 α-olefin and a least one polyene monomer, whereby the copolymer unit derived from the polyene is 1 to 5 wt. %, by weight of the copolymer (A) and has a Mooney viscosity ML (1+4) at 100° C. from 51 or greater, in particular from 55 to 90 at 100° C., (B) 50-80 phr of butyl-type rubber and (C) a resin-based curative, containing a phenol formaldehyde resin cross-linker as only curing agent and an activator package comprising of metal oxide and a halogen donor where a halogenated component (B) or halogenated cross-linker as part of component (C) not already present.

Rubber Composition, and Vulcanized Rubber Product and Hose Using Same

To provide a rubber composition having excellent durability against external environment, and a vulcanization rubber product and a hose using the same. The rubber composition of the present technology is a rubber composition comprising: a rubber component (A), a water repellent (B), and hydrotalcite (C). In the rubber composition, the rubber component (A) comprises CR, SBR, or both CR and SBR; and the water repellent (B) comprises one or more types of ultra high molecular weight polyethylene powders or fatty acid amide compounds. The total content of the components of the water repellent (B) is from 2 parts by mass to 30 parts by mass per 100 parts by mass of the rubber component (A); and the content of the hydrotalcite (C) is from 2 parts by mass to 20 parts by mass per 100 parts by mass of the rubber component (A). 1. A rubber composition comprising: a rubber component (A) , a water repellent (B) , and hydrotalcite (C);the rubber component (A) comprising chloroprene rubber, styrene-butadiene rubber, or both chloroprene rubber and styrene-butadiene rubber;the water repellent (B) comprising one or more types of ultra high molecular weight polyethylene powders or fatty acid amide compounds;a total content of the components of the water repellent (B) being from 2 parts by mass to 30 parts by mass per 100 parts by mass of the rubber component (A); anda content of the hydrotalcite (C) being from 2 parts by mass to 20 parts by mass per 100 parts by mass of the rubber component (A).2. A rubber composition comprising: a rubber component (A) , a water repellent (B) , and hydrotalcite (C);the rubber component (A) comprising ethylene-propylene-non-conjugated diene rubber, acrylonitrile-butadiene rubber, and styrene-butadiene rubber;the water repellent (B) comprising one or more types of ultra high molecular weight polyethylene powders or fatty acid amide compounds;a content of the ethylene-propylene-non-conjugated diene rubber in the rubber component (A) being from 20 parts ...

Vulcanization composition for unsaturated polymers

The present invention relates to the field of vulcanization of unsaturated polymers, in particular halogenated, and more particularly chlorinated, unsaturated polymers, such as, for example, polychloroprene, using as vulcanization agent a mixture of bis(2,5-dimercapto-1,3,4-thiadiazole) and at least one organic base. The present invention relates to the process for vulcanization of said polymers with said vulcanization mixture.

CPE/CR BLEND CO-CURED BY A THIADIAZOLE OR TRIAZINE CURE SYSTEM

Fuel lines including an inner tube, a reinforcement layer disposed outwardly from the inner tube, and a cover layer disposed outwardly from the reinforcement layer. The cover layer and/or inner tube are formed from compositions including a blend of chlorinated polyethylene (CPE) and chloroprene rubber (CR), where the CPE and CR are blended in a CPE:CR weight ratio of from 20:1 to 1:1. The compositions also include a curing system containing tetrabutylammonium bromide (TBAB), magnesium oxide (MgO), and one of a thiadiazole or thiotriazine. In some aspects, the TBAB is incorporated in an amount of from 0.2 phr to 2.5 phr, the MgO incorporated in an amount of from 5 phr to 20 phr, and the one of a thiadiazole or thiotriazine incorporated in an amount of from 0.5 phr to 5 phr. 1. A composition comprising:a) a blend of chlorinated polyethylene (CPE) and chloroprene rubber (CR), wherein the CPE and CR are blended in a CPE:CR weight ratio of from 20:1 to 1:1; and,b) a curing system comprising tetrabutylammonium bromide (TBAB), magnesium oxide (MgO), and one of a thiadiazole or thiotriazine.2. The composition according to claim 1 , wherein the TBAB is incorporated in an amount of from 0.2 phr to 2.5 phr claim 1 , wherein the MgO is incorporated in an amount of from 5 phr to 20 phr claim 1 , and wherein the one of a thiadiazole or thiotriazine is incorporated in an amount of from 0.5 phr to 5 phr.3. The composition according to claim 1 , wherein the curing system devoid of free sulfur and peroxide.4. The composition according to claim 1 , the composition further comprising antimony trioxide.5. The composition according to claim 1 , wherein the TBAB is incorporated in an amount of from 0.3 phr to 2 phr.6. The composition according to claim 1 , wherein the one of a thiadiazole or thiotriazine is incorporated in an amount of from 0.8 phr to 3 phr.7. The composition according to claim 1 , wherein the CPE:CR weight ratio is of from 9:1 to 7:3.8. The composition according to as ...

Rubber Composition for Flame-Retardant Hose, and Flame-Retardant Hose

The present technology provides a rubber composition for a flame-retardant hose, the composition containing a rubber component, a carbon black, and a silica, wherein the rubber component is only chloroprene rubber or only chloroprene rubber and styrene-butadiene rubber; and a flame-retardant hose including a rubber layer formed using the rubber composition for a flame-retardant hose.

Rubber Composition for Flame-Retardant Hose, and Flame-Retardant Hose

Provided are a rubber composition for a flame-retardant hose, the rubber composition including from 20 to 45 parts by mass of aluminum hydroxide and greater than 65 parts by mass of a carbon black per 100 parts by mass of a rubber component containing at least chloroprene rubber, and the flame-retardant hose including a rubber layer formed using the rubber composition for a flame-retardant hose. 1. A rubber composition for a flame-retardant hose , the composition comprising from 20 to 45 parts by mass of aluminum hydroxide and greater than 65 parts by mass of a carbon black , per 100 parts by mass of a rubber component containing at least chloroprene rubber.2. The rubber composition for a flame-retardant hose according to claim 1 , wherein the rubber component further comprises a diene rubber other than the chloroprene rubber.3. The rubber composition for a flame-retardant hose according to claim 2 , wherein the diene rubber is styrene-butadiene rubber.4. The rubber composition for a flame-retardant hose according to claim 1 , whereina content of the chloroprene rubber is not less than 70 parts by mass per 100 parts by mass of the rubber component.5. The rubber composition for a flame-retardant hose according to claim 1 , whereina content of the carbon black is from 66 to 90 parts by mass per 100 parts by mass of the rubber component.6. The rubber composition for a flame-retardant hose according to claim 1 , further comprising a silica claim 1 , wherein a content of the silica is from 5 to 25 parts by mass per 100 parts by mass of the rubber component.7. A flame-retardant hose comprising a rubber layer formed using the rubber composition for a flame-retardant hose described in .8. The rubber composition for a flame-retardant hose according to claim 2 , wherein a content of the chloroprene rubber is not less than 70 parts by mass per 100 parts by mass of the rubber component.9. The rubber composition for a flame-retardant hose according to claim 3 , wherein a content ...

METHOD FOR PRODUCING STATISTICAL COPOLYMER CONTAINING CHLOROPRENE MONOMER UNIT AND UNSATURATED NITRILE MONOMER UNIT, STATISTICAL COPOLYMER, LATEX AND USE OF SAME

To provide a statistical copolymer containing a chloroprene monomer unit and an unsaturated nitrile monomer unit which has a satisfactory oil resistance. A method for producing a statistical copolymer containing a chloroprene monomer unit and an unsaturated nitrile monomer unit includes a step for conducting continuous addition or 10 cycles or more of intermittent portionwise addition of the chloroprene monomer after initiation of a polymerization reaction is provided. A rubber composition using a statistical copolymer according to the invention or a vulcanized molded article containing the rubber composition is excellent in terms of oil resistance, mechanical strength, compression set at a low temperature and flex fatigue resistance. 1. A method for producing a statistical copolymer containing a chloroprene monomer unit and an unsaturated nitrile monomer unit comprising a step for conducting continuous addition or 10 cycles or more of intermittent portionwise addition of the chloroprene monomer after initiation of a polymerization reaction.2. The production method according to comprising a step for determining the quantity of the chloroprene monomer to be added during time period dt(n+1) between time t(n) and time t(n+1) based on the total quantity of polymerization conversion of the chloroprene monomer and the unsaturated nitrile monomer during time period dt(n) between time t(n−1) and time t(n) wherein the time at which the polymerization reaction is initiated is t(0) and n is an integer of 1 or more claim 1 , thereby keeping the ratio between unreacted chloroprene monomer and unsaturated nitrile monomer constant.3. The production method according to comprising claim 1 , after initiation of the polymerization reaction claim 1 , the following steps:a step for calculating the polymerization rate of the chloroprene monomer and the unsaturated nitrile monomer based on the specific gravity of a latex containing the chloroprene monomer and the unsaturated nitrile ...

SEMICONDUCTIVE ROLLER

A semiconductive roller according to the present invention includes a crosslinked product containing just the three types of rubber of butadiene rubber, epichlorohydrin rubber, and chloroprene rubber as rubber components, has a non-porous, single-layer structure, and has a compression set Cs (%) of not more than 10% as measured in accordance with the measurement method described in the Japanese Industrial Standards JIS K6262:2006 under conditions of a test temperature of 70° C., a test time of 24 hours, and a compression ratio of 25%. 1. A semiconductive roller comprising a crosslinked product containing just the three types of rubber of butadiene rubber , epichlorohydrin rubber , and chloroprene rubber as rubber components ,having a non-porous, single-layer structure, andhaving a compression set Cs (%) of not more than 10% as measured in accordance with the measurement method described in the Japanese Industrial Standards JIS K6262:2006 under conditions of a test temperature of 70° C., a test time of 24 hours, and a compression ratio of 25%.2. The semiconductive roller according to claim 1 , wherein a blending proportion of the butadiene rubber with respect to 100 parts by mass of the total amount of the rubber components is not less than 10 parts by mass and not more than 80 parts by mass.3. The semiconductive roller according to claim 1 , wherein the butadiene rubber includes a high cis-butadiene rubber with a cis-1 claim 1 ,4 bond percentage of not less than 90% by mass.4. The semiconductive roller according to claim 2 , wherein the butadiene rubber includes a high cis-butadiene rubber with a cis-1 claim 2 ,4 bond percentage of not less than 90% by mass.5. The semiconductive roller according to claim 1 , wherein the epichlorohydrin rubber includes at least one of either of ECO and GECO claim 1 , andthe ethylene oxide content of the ECO and the GECO is not less than 30 mole % and not more than 95 mole %.6. The semiconductive roller according to claim 4 , wherein ...

Rubber composition for vulcanizing bladder and vulcanizing bladder

The present invention is to provide a rubber composition for vulcanizing bladder excellent in thermal conductivity and a vulcanizing bladder formed of the rubber composition, with which vulcanization efficiency can be improved. The rubber composition for vulcanizing bladder comprises, based on 100 parts by mass of a rubber component comprising 80% by mass or more of a butyl rubber, 20 to 200 parts by mass of at least one type of metal filler selected from the group consisting of metal powder, metal oxide powder, metal hydroxide powder and metal nitride powder, said metal filler having a Mohs hardness of 8 or lower and a mean particle size of 0.3 to 50 μm, and 20 to 80 parts by mass of a carbon black. The vulcanizing bladder is formed of the rubber composition for vulcanizing bladder.

POLYISOPRENE/POLYCHLOROPRENE COMPOSITIONS

Polymer compositions that include polyisoprene and polychloroprene and methods for manufacturing protective articles from the polymer compositions are disclosed. 120-. (canceled)21. A soft , strong , hypo-allergenic glove comprising a diphenyl guanidine-free , cross-linked polymeric composition , the cross-linked polymeric composition comprising:a synthetic polyisoprene material;a polychloroprene material;at least one polysulphidic sulphur donor; andat least one accelerator, wherein the glove comprises between 40% to 60% polyisoprene and 40% to 60% polychloroprene and is free from diphenyl guanidine, and wherein the glove has a softness as represented by an unaged modulus value at 500% of elongation in an amount of 1.9 to 2.5 M Pa.22. The soft claim 21 , strong claim 21 , hypo-allergenic glove of claim 21 , wherein the glove comprises an aged modulus value at 500% elongation is in an amount from 2.4 to 3.0 MPa.23. The soft claim 21 , strong claim 21 , hypo-allergenic glove of claim 21 , wherein the glove has a retained tensile strength of at least 95% after aging at 70° C. for at least seven days.24. The soft claim 21 , strong claim 21 , hypo-allergenic glove of claim 21 , wherein the glove comprises approximately equal amounts of polyisoprene and polychloroprene.25. The soft claim 21 , strong claim 21 , hypo-allergenic glove of claim 21 , wherein the at least one polysulphidic sulphur donor is at least one of xanthogen polysulphide or dipentamethylene thiuramtetrasulfide.26. The soft claim 21 , strong claim 21 , hypo-allergenic glove of claim 21 , wherein the at least one accelerator is a dithiocarbamate claim 21 , or a long chain thiuram.27. The soft claim 21 , strong claim 21 , hypo-allergenic glove of claim 21 , wherein the at least one accelerator comprises at least one of zinc dibutyl dithiocarbamate claim 21 , N-zinc diethyl dithiocarbamate claim 21 , or sodium dibutyl dithiocarbamate.28. The soft claim 21 , strong claim 21 , hypo-allergenic glove of claim 21 ...

ELASTOMER COMPOSITE INCLUDING ALGAE BIOMASS FILLER

An algae-elastomer composite including an elastomer matrix; algae; and a mixing additive sufficient to achieve a desired property. The algae can be present in a milled condition having a particle size value of between about 10 and 120 microns. The algae is mixed with the elastomer matrix in a dry condition having a moisture content of below about 10%. A method of preparing the algae-based elastomer composite is provided that includes the steps of: premixing an elastomer matrix; adding an algae filler; adding a mixing additive that includes a plasticizer; forming an elastomer-algae blend by blending the algae and elastomer to a temperature sufficient to be further mixed, wherein the temperature is about 10° C. higher than the temperature sufficient for the elastomer alone; adding and mixing a curing or vulcanizing agent for the elastomer dispersing the elastomer-algae blend; and heating and curing the elastomer-algae blend into a final form. 1. A algae-elastomer composite comprising:(a) an elastomer matrix;(b) a biomass reinforcement distributed through the elastomer matrix, wherein the biomass comprises algae; and(c) a mixing additive sufficient to achieve a desired property.2. The composite of claim 1 , wherein the algae is present in a milled condition having a mean particle size value of up to 120 microns.3. The composite of claim 1 , wherein the algae is mixed with the elastomer matrix in a dry condition having a moisture content of below about 20%.4. The composite of claim 3 , wherein the algae is mixed with the elastomer matrix in a dry condition having a moisture content of below about 3%.5. The composite of claim 1 , wherein the elastomer matrix is selected from the group consisting of Natural Rubber (NR) claim 1 , Butadiene Rubber (BR) claim 1 , Acrylonitrile Butadiene Rubber (NBR) claim 1 , Styrene Butadiene Rubber (SBR) claim 1 , Hydrogenated Acrylonitrile Butadiene Rubber (HNBR) claim 1 , Ethylene Propylene Diene Rubber (EPDM) claim 1 , Chloroprene ...

RUBBER COMPOSITION FOR HOSES, AND HOSE

The present invention provides a rubber composition for a hose, and a hose that can improve flame retardancy and wear resistance, and ensure workability. A rubber composition for a hose of the present application contains chloroprene rubber, butadiene rubber and styrene-butadiene rubber as rubber components, and silica, and contains 60 parts by mass to 80 parts by mass of chloroprene rubber in 100 parts by mass of the rubber components, the rubber components being compounded with 5 parts by mass to 25 parts by mass of the silica based on 100 parts by mass of the rubber components. 1. A rubber composition containing chloroprene rubber , butadiene rubber and styrene-butadiene rubber as rubber components , and silica , andcontaining 60 parts by mass to 80 parts by mass of chloroprene rubber in 100 parts by mass of the rubber components, the rubber components being compounded with 5 parts by mass to 25 parts by mass of the silica based on 100 parts by mass of the rubber components.2. The rubber composition according to wherein 60 parts by mass to 80 parts by mass of chloroprene rubber claim 1 , 10 parts by mass to 30 parts by mass of butadiene rubber claim 1 , 10 parts by mass to 30 parts by mass of styrene-butadiene rubber are contained in 100 parts by mass of the rubber components.3. The rubber composition according to claim 1 , wherein the rubber components are compounded with 10 parts by mass or less of metal hydroxide compound based on 100 parts by mass of the rubber components.4. A hose having a rubber layer consisting of the rubber composition according to . The present invention relates to a rubber composition for a hose, and a hose, in particular to a rubber composition for a hose, and a hose that can improve flame retardancy (in particular, shortening of afterglow response) and wear resistance, and ensure workabilityRegarding a hydraulic hose used in construction machinery and the like, consideration on improving weather resistance, fatigue resistance, wear ...

ADDITIVE FOR IMPARTING LOW HEAT BUILD-UP TO RUBBER COMPONENT

Provided is an additive for imparting low heat build-up to a rubber component, wherein the additive includes a tetrazine compound represented by general formula (1): 2. The method according to claim 1 , wherein Xand Xrepresent a heterocyclic group.3. The method according to claim 1 , wherein the rubber component is a diene rubber.4. The method according to claim 2 , wherein the rubber component is a diene rubber. The present invention relates to an additive for imparting low heat build-up to a rubber component.Recent environmental concerns have led to strict international regulations on carbon dioxide emissions, and a highly increased demand for lower fuel consumption in automobiles. While the efficiency of drive systems such as engines, as well as transmission systems, greatly contributes to lower fuel consumption, rolling resistance of tires is also largely involved in lower fuel consumption. For lower fuel consumption in automobiles, reducing rolling resistance is important.As a method for reducing the rolling resistance of tires, applying a rubber composition with low heat build-up to tires is known. Examples of such rubber compositions with low heat build-up include (1) a rubber composition comprising a functionalized polymer having increased affinity to carbon black and silica as fillers (Patent Literature (PTL) 1); (2) a rubber composition comprising a diene elastomer, an inorganic filler as a reinforcing filler, polysulphurized alkoxysilane as a coupling agent, 1,2-dihydropyridine, and a guanidine derivative (Patent Literature (PTL) 2); (3) a rubber composition comprising a rubber component, an aminopyridine derivative, and an inorganic filler (Patent Literature (PTL) 3); and (4) a rubber composition comprising an end-modified polymer and an inorganic filler (Patent Literature (PTL) 4 and Patent Literature PTL 5).According to the inventions disclosed in PTL 1 to PTL 5, heat build-up of a rubber composition can be reduced by increasing affinity between a ...

RUBBER COMPOSITION, AND VULCANIZATE AND MOLDED ARTICLE THEREOF

Provided are a rubber composition that gives a vulcanizate superior in heat resistance and a vulcanizate and a molded article thereof. A rubber composition, comprising a rubber component consisting of a chloroprene rubber: 50 to 90 mass % and an elastomer: 10 to 50 mass % in a total amount of 100 parts by mass, a zinc powder having an arithmetic mean particle diameter, as determined by the method specified by JIS Z8901, of 3 to 10 μm in an amount of 3 to 20 parts by mass, and a magnesium oxide having a BET specific surface area, as determined by the one-point method specified by JIS Z8830, of 20 to 150 m/g in an amount of 4 to 16 parts by mass. A vulcanizate and a molded article obtained by molding and vulcanization of the rubber composition. 1. A rubber composition , comprisinga rubber component consisting of a chloroprene rubber: 50 to 90 mass % and an elastomer: 10 to 50 mass % in a total amount of 100 parts by mass,a zinc powder having an arithmetic mean particle diameter, as determined by the method specified by JIS Z8901, of 3 to 10 μm in an amount of 3 to 20 parts by mass, and{'sup': '2', 'a magnesium oxide having a BET specific surface area, as determined by the one-point method specified by JIS 28830, of 20 to 150 m/g in an amount of 4 to 16 parts by mass.'}2. The rubber composition according to claim 1 , wherein the elastomer is at least one polymer selected from the group consisting of ethylene-α-olefin copolymers claim 1 , ethylene-α-olefin-unconjugated polyene copolymers claim 1 , and butyl-based rubbers.3. The rubber composition according to claim 1 , wherein the chloroprene rubber is a mercaptan- or xanthogen-modified chloroprene rubber.4. The rubber composition according to claim 1 , further comprising at least one antioxidant agent selected from aromatic amine-based antioxidant agents claim 1 , hindered phenol-based antioxidant agents claim 1 , and phosphite-based antioxidant agents in a total amount of 3 to 10 parts by mass with respect to 100 ...

RUBBER GLOVE

The present disclosure provides a rubber glove having a multilayer structure, which has high adhesion between layers, excellent resistance to ketones, and excellent dexterity. The rubber glove of the present disclosure includes an inner layer composed of a crosslinked product of a rubber composition (1) containing acrylonitrile-butadiene rubber; and an outer layer composed of a crosslinked product of a rubber composition (2) containing acrylonitrile-butadiene rubber and chloroprene rubber, wherein the inner layer and the outer layer are adjacent to each other, and two or more types of chloroprene rubber having different crystallization rates are used as the chloroprene rubber. 1. A rubber glove comprising:an inner layer composed of a crosslinked product of a rubber composition (1) containing an acrylonitrile-butadiene rubber, andan outer layer composed of a crosslinked product of a rubber composition (2) comprising an acrylonitrile-butadiene rubber and a chloroprene rubber, whereinthe inner layer and the outer layer are adjacent to each other, andtwo or more types of chloroprene rubber having different crystallization rates are used as the chloroprene rubber.2. The rubber glove according to claim 1 , wherein a total thickness of the inner layer and the outer layer is 0.40 mm or more and 0.50 mm or less claim 1 , and a ratio of a thickness of the outer layer to the total thickness is 0.6 or more and 0.8 or less.3. The rubber glove according to claim 1 , wherein the rubber composition (2) contains zinc oxide in an amount of 1.0 parts by mass or more and 6.0 parts by mass or less with respect to 100 parts by mass of the rubber component.4. The rubber glove according to claim 1 , wherein a mass ratio of the chloroprene rubber is 85% by mass or more and 95% by mass or less claim 1 , and a mass ratio of the acrylonitrile-butadiene rubber is 5% by mass or more and 15% by mass or less claim 1 , with respect to the total mass of the acrylonitrile-butadiene rubber and the ...

SULFUR MODIFIED CHLOROPRENE RUBBER AND METHOD FOR PRODUCING SAME, AND MOLDED BODY

Provided are a sulfur-modified chloroprene rubber superior in adhesiveness to cable core and fibrous reinforcement material, a method for producing the same, and a molded body prepared from the same. A sulfur-modified chloroprene rubber is prepared in a polymerization step of mixing 100 parts by mass of 2-chloro-1,3-butadiene and 0.1 to 2.0 parts by mass of sulfur and emulsion-polymerizing the mixture to a monomer conversion rate in the range of 60 to 90% and in a plasticizing step of modifying the terminal of the polymer by adding an aqueous medium dispersion containing tetramethylthiuram disulfide in an amount of 10 to 70 mass % to the reaction solution after polymerization. The H-NMR spectrum of the sulfur-modified chloroprene rubber, as determined in deuterochloroform solvent, has two peak tops at 3.55 to 3.61 ppm and at 3.41 to 3.47 ppm, and the ratio (A/B) of peak area (A) at 3.55 to 3.61 ppm to peak area (B) at 4.2 to 6.5 ppm is 0.05/100 to 0.70/100. 1. A sulfur-modified chloroprene rubber , prepared by mixing 100 parts by mass of 2-chloro-1 ,3-butadiene and 0.1 to 2.0 parts by mass of sulfur , emulsion-polymerizing the mixture to a monomer conversion rate of 60 to 90% , and modifying the polymer terminal thereof by adding an aqueous medium dispersion containing tetramethylthiuram disulfide in an amount of 10 to 70 mass % , wherein:{'sup': '1', 'the H-NMR spectrum, as determined in deuterochloroform solvent, has peak tops at 3.55 to 3.61 ppm and at 3.41 to 3.47 ppm, and'}the ratio (NB) of peak area (A) at 3.55 to 3.61 ppm to peak area (B) at 4.2 to 6.5 ppm is 0.05/100 to 0.70/100.2. The sulfur-modified chloroprene rubber according to claim 1 , prepared by additionally mixing other monomers in an amount in the range of less than 50 parts by mass with respect to 100 parts by mass of 2-chloro-1 claim 1 ,3-butadiene and copolymerizing the mixture.3. The sulfur-modified chloroprene rubber according to claim 2 , prepared by additionally mixing other monomers in an ...

ELASTOMERIC ARTICLES WITH IMPROVED FIRE PROTECTION PROPERTIES

An air spring having an airsleeve, wherein at least one layer of said airsleeve includes the vulcanization product of a composition that includes at least one vulcanizable polymer, a curative, at least one halogenated hydrocarbon wax, and expandable graphite. 1. An air spring having an airsleeve , wherein at least one layer of said airsleeve includes the vulcanization product of a composition that includesat least one vulcanizable polymer;a curative;at least one halogenated hydrocarbon wax; andexpandable graphite.2. The air spring of claim 1 , where the total amount of vulcanizable polymer is from about 25 to about 40 wt. % claim 1 , based upon the total weight of the composition.3. The air spring of claim 1 , where the at least one vulcanizable polymer comprises polychloroprene.4. The air spring of claim 1 , where the at least one vulcanizable polymer comprises polychloroprene claim 1 , and where the composition further comprises at least one additional vulcanizable polymer selected from the group consisting of natural rubber claim 1 , synthetic polyisoprene claim 1 , polybutadiene claim 1 , polyisobutylene-co-isoprene claim 1 , poly(ethylene-co-propylene) claim 1 , poly(styrene-co-butadiene) claim 1 , poly(styrene-co-isoprene) claim 1 , and poly(styrene-co-isoprene-co-butadiene) claim 1 , poly(isoprene-co-butadiene) claim 1 , poly(ethylene-co-propylene-co-diene) claim 1 , polysulfide rubber claim 1 , acrylic rubber claim 1 , urethane rubber claim 1 , nitrile rubber claim 1 , silicone rubber claim 1 , epichlorohydrin rubber claim 1 , and mixtures thereof.5. The air spring of claim 1 , where the at least one halogenated hydrocarbon wax is present in an amount of from about 0.2 parts by weight to about 25 parts by weight claim 1 , based upon one hundred parts by weight rubber.6. The air spring of claim 1 , where the composition comprises from about 0.5 parts by weight to about 40 parts by weight expandable graphite claim 1 , based upon one hundred parts by weight ...

Polyisoprene/polychloroprene compositions

Polymer compositions that include polyisoprene and polychloroprene and methods for manufacturing protective articles from the polymer compositions are disclosed.

THERMOPLASTIC ELASTOMER COMPOSITION OF AN ELASTOMER AND A NON-ELASTOMERIC POLYOLEFIN WHICH IS FUNCTIONALIZED WITH AN ANHYDRIDE OF AN ORGANIC CARBOXYLIC ACID

A thermoplastic elastomer composition is disclosed that includes an elastomer and a non-elastomeric polyolefin, which is functionalized with an anhydride of an organic carboxylic acid. Furthermore, the use of a mixture of an elastomer and a cross-linking agent for the elastomer for producing a thermoplastic elastomer composition are disclose. A further subject of the invention is the use of a non-elastomeric polyolefin which is functionalized with an anhydride of an organic carboxylic acid for producing a thermoplastic elastomer composition according to the invention. In addition, the invention relates to the use of a thermoplastic elastomer composition according to the invention for producing an article/composite material with a polyamide. The invention also relates to a process for producing a thermoplastic elastomer composition according to the invention as well as a composite material made of the thermoplastic elastomer composition according to the invention with a polyamide. 13-. (canceled)4. A method of producing an article , the method comprising:combining a thermoplastic elastomer composition with a polyamide, wherein the thermoplastic elastomer composition includes:an elastomer;a thermoplast; andoptionally, one or more further constituents selected from the group consisting of a crosslinking agent, a co-crosslinker, a plasticizer, a stabilizer, an auxiliary material, a dye, and a filler,wherein the thermoplast is a non-elastomeric polyolefin which is functionalized with an anhydride of an organic carboxylic acid,wherein the elastomer is selected from the group consisting of nitrile butadiene rubber, hydrogenated nitrile butadiene rubber, butyl rubber, natural rubber, isoprene rubber, acrylate rubber, ethylene acrylate rubber, silicone rubber, styrene butadiene rubber, chloroprene rubber, bromobutyl rubber, epichlorohydrin rubber, and epoxidized natural rubber, or a mixture thereof,wherein the elastomer is cross-linked, andwherein the weight ratio of ...

Rubber Composition, Laminated Body of Rubber Composition and Metal, And Vulcanized Rubber Product

A rubber composition of the present technology comprises: from 0.5 parts by mass to 1.5 parts by mass of sulfur, from 0.2 parts by mass to 0.6 parts by mass of a thiuram vulcanization accelerator, from 0.2 parts by mass to 0.6 parts by mass of a guanidine vulcanization accelerator, from 0.15 parts by mass to 0.8 parts by mass of a sulfenamide vulcanization accelerator, and from 0.1 parts by mass to 1.5 parts by mass of a thiourea vulcanization accelerator per 100 parts by mass of a diene polymer containing a chloroprene rubber. 1. A rubber composition comprising:from 0.5 parts by mass to 1.5 parts by mass of sulfur,from 0.2 parts by mass to 0.6 parts by mass of a thiuram vulcanization accelerator,from 0.2 parts by mass to 0.6 parts by mass of a guanidine vulcanization accelerator,from 0.15 parts by mass to 0.8 parts by mass of a sulfenamide vulcanization accelerator, andfrom 0.1 parts by mass to 1.5 parts by mass of a thiourea vulcanization accelerator,per 100 parts by mass of a diene polymer containing a chloroprene rubber.2. The rubber composition according to claim 1 , wherein claim 1 , in the diene polymer claim 1 , a content of the chloroprene rubber is from 40 mass % to 100 mass % claim 1 , and a content of a styrene butadiene rubber is from 0 mass % to 60 mass %.3. A laminated body of a rubber composition and a metal comprising: a rubber layer containing the rubber composition described in ; and a reinforcing layer that is provided on the rubber layer and has a metal surface.4. The laminated body of a rubber composition and a metal according to claim 3 , wherein the metal surface is formed by plating with brass.5. The laminated body of a rubber composition and a metal according to claim 3 , wherein the reinforcing layer has a braided structure in which wires have been braided claim 3 , or a spiral structure.6. A vulcanized rubber product obtained by using the rubber composition described in .7. A vulcanized rubber product claim 3 , the rubber layer of the ...

RUBBERT COMPOSITIONS AND USES THEREOF

There are provided rubber compositions comprising an elastomer comprising polychloroprene; reinforcing fibers chosen from aramid fibers, carbon fibers, polyester fibers, glass fibers, nylon fibers and mixtures thereof, and/or nanometric filamentary structures chosen from nanowires, nanorods, nanofibers, nanoribbons, nanotubes and mixtures thereof, said nanometric filamentary structures being functionalized or unfunctionalized; and a filler chosen from carbon black and silica. These compositions, when cured, comprises at least one set of characteristics chosen from those described in the application. 1. A rubber composition comprising:about 40 to about 75 wt. % of an elastomer comprising polychloroprene;about 0.1 to about 10 wt. % of reinforcing fibers that are aramid fibers;about 0.1 to about 10 wt. % of nanometric filamentary structures that are carbon nanotubes, said nanometric filamentary structures being functionalized or unfunctionalized; andabout 15 to about 40 wt. % of a filler selected from the group consisting of carbon black and silica,wherein said composition, when cured, comprises at least one set of characteristics selected from the group consisting of{'sup': '3', 'a hardness of at least 60 shore A, measured according to ASTM D-2240 and a DIN abrasion of less than 125 mm, measured according to according to ASTM D-5963 standard;'}{'sup': '3', 'a 100% modulus of at least 300, measured according to ASTM D-412 standard and a DIN abrasion of less than 125 mm, measured according to according to ASTM D-5963 standard;'}{'sup': '3', 'a hardness of at least 60 shore A, measured according to ASTM D-2240 and a DIN abrasion of less than 125 mm, and a wear resistance of less than 175 mg, measured according to Dupont SJE test;'}a 100% modulus of at least 300, measured according to ASTM D-412 standard and a wear resistance of less than 175 mg, measured according to Dupont SJE test;{'sup': '3', 'a hardness of at least 60 shore A, measured according to ASTM D-2240, a 100 ...

Rubber Composition, Laminated Body of Rubber Composition and Metal, and Vulcanized Rubber Product

A rubber composition of the present technology comprises: from 0.5 parts by mass to 1.5 parts by mass of sulfur, from 0.2 parts by mass to 0.6 parts by mass of a thiuram vulcanization accelerator, from 0.2 parts by mass to 0.6 parts by mass of a guanidine vulcanization accelerator, from 0.15 parts by mass to 0.8 parts by mass of a sulfenamide vulcanization accelerator, and from 0.1 parts by mass to 1.5 parts by mass of a thiourea vulcanization accelerator per 100 parts by mass of a diene polymer containing a chloroprene rubber. 1. A rubber composition comprising:from 0.5 parts by mass to 1.5 parts by mass of sulfur,from 0.2 parts by mass to 0.6 parts by mass of a thiuram vulcanization accelerator,from 0.2 parts by mass to 0.6 parts by mass of a guanidine vulcanization accelerator,from 0.15 parts by mass to 0.8 parts by mass of a sulfenamide vulcanization accelerator, andfrom 0.1 parts by mass to 1.5 parts by mass of a thiourea vulcanization accelerator,per 100 parts by mass of a diene polymer containing a chloroprene rubber.2. The rubber composition according to claim 1 , wherein claim 1 , in the diene polymer claim 1 , a content of the chloroprene rubber is from 40 mass % to 100 mass % claim 1 , and a content of a styrene butadiene rubber is from 0 mass % to 60 mass %.3. A vulcanized rubber product obtained by using the rubber composition described in .4. A vulcanized rubber product obtained by using the rubber composition described in . This application is a divisional of U.S. patent application Ser. No. 14/409,800, filed on Dec. 19, 2014, which is the National Stage of International Patent Application No. PCT/JP2014/063231, filed on May 19, 2014.The present technology relates to a rubber composition, a laminated body of the rubber composition and a metal, and a vulcanized rubber product, and particularly relates to a rubber composition, a laminated body of the rubber composition and a metal, and a vulcanized rubber product containing a plurality of vulcanization ...

Article, in Particular Air Spring Bellows, a Metal-Rubber Element, or a Vibration Damper

The invention relates to an article having a single- or multi-layered main body having elastic properties, in particular an air spring bellows, a metal-rubber element or a vibration damper. 1. A rubber mixture comprising at least one carbon black having a BET surface area according to DIN-ISO 9277 between 35 and 140 m/g and an oil absorption number (OAN) according to ISO 4656 between 70 and 140 ml/100 g , a first aluminum trihydrate (ATH_1) and at least a further aluminum trihydrate (ATH_2) , wherein the first aluminum trihydrate (ATH_1) and the further aluminum trihydrate (ATH_2) each have a different particle size;{'sub': 50', '50, 'wherein the particle size dof the first aluminum trihydrate (ATH_1) determined by laser diffraction is between 0.1 and 0.6 μm and the further aluminum trihydrate (ATH_2) has a particle size ddetermined by laser diffraction of between 0.9 and 1.5 μm;'}wherein the amount of carbon black is 5 to 30 phr;wherein the first aluminum trihydrate (ATH_1) is incorporated in an amount of from 30 to 70 phr;wherein the at least one further aluminum trihydrate (ATH_2) is incorporated in an amount of from 60 to 150 phr; and,wherein the rubber mixture is free of halogen-containing flame retardants.2. The rubber mixture according to claim 1 , wherein the at least one carbon black is selected from N550 and N339 carbon blacks.3. The rubber mixture according to claim 1 , wherein the first aluminum trihydrate (ATH_1) or the at least a further aluminum trihydrate (ATH_2) is silanized.4. The rubber mixture according to claim 1 , wherein the first aluminum trihydrate (ATH_1) and the at least a further aluminum trihydrate (ATH_2) is silanized.5. The rubber mixture according to further comprising at least one further flame retardant selected from the group consisting of zinc stannate claim 1 , zinc hydroxystannate claim 1 , hydroxide claim 1 , calcium hydroxide claim 1 , melamine cyanurate claim 1 , zinc borate claim 1 , calcium borate claim 1 , resorcinol ...

RUBBER ARTICLES WITH IMPROVED FIRE PROPERTIES

Tires and tire components are provided having improved fire properties, as well as the vulcanizable compositions for making the tires and tire components. A vulcanizable composition is provided that includes at least one vulcanizable polymer, a curative, a halogenated hydrocarbon, and expandable graphite. The tires and tire components have improved properties including one or more of improved flame retardancy, reduced smoke density and/or toxicity, and reduced heat release. 1. A tire component prepared by a process comprising the steps of:(i) preparing a vulcanizable composition that includes at least one vulcanizable polymer, a curative, at least one halogenated hydrocarbon wax, and expandable graphite;(ii) fabricating an uncured tire component comprising at least one layer that is formed from said vulcanizable composition; and(iii) at least partially curing the uncured tire component.2. The tire component of claim 1 , where the vulcanizable composition further comprises from about 0.1 parts by weight to about 20 parts by weight alumina trihydrate claim 1 , based upon one hundred parts by weight rubber.3. The tire component of claim 1 , where the vulcanizable composition further comprises from about 20 parts by weight to about 100 parts by weight clay claim 1 , based upon one hundred parts by weight rubber.4. The tire component of claim 1 , where the vulcanizable composition further comprises carbon black.5. The tire component of claim 1 , where the vulcanizable composition further comprises silica.6. The tire component of claim 1 , where the vulcanizable composition further comprises factice.7. The tire component of claim 1 , where the vulcanizable composition further comprises one or more plasticizers.8. The tire component of claim 1 , where the vulcanizable composition further comprises one or more homogenizing agents.9. The tire component of claim 1 , where the vulcanizable composition further comprises one or more antioxidants.10. The tire component of claim 1 ...

CHLOROPRENE RUBBER COMPOSITION, VULCANIZED MOLDED ARTICLE, AND ANTI-VIBRATION RUBBER

Provided is a chloroprene rubber composition giving a vulcanized molded article improved further in heat resistance without deterioration in mechanical properties such as anti-vibration rubber properties, durometer hardness, and elongation at break, a vulcanized molded article prepared and an anti-vibration rubber prepared from the composition. A chloroprene rubber composition, comprising 100 parts by mass of a chloroprene rubber, 0.1 part or more by mass and 10 parts or less by mass of an active zinc white having an average particle diameter of 0.05 μm or more and 0.35 μm or less, a particle diameter range of 0.01 μm or more and 1.0 μm or less and a specific surface area of 10 m/g or more and 150 m/g or less, and 15 parts or more by mass and 200 parts or less by mass of a carbon black having an average particle diameter of 70 nm or more and 600 nm or less and a DBP oil absorption number of 15 ml/100 g or more and 60 ml/100 g or less. 1. A chloroprene rubber composition , comprising100 parts by mass of a chloroprene rubber,{'sup': 2', '2, '0.1 part or more by mass and 10 parts or less by mass of an active zinc white having an average particle diameter of 0.05 μm or more and 0.35 μm or less, a particle diameter range of 0.01 μm or more and 1.0 μm or less and a specific surface area of 10 m/g or more and 150 m/g or less, and'}15 parts or more by mass and 200 parts or less by mass of a carbon black having an average particle diameter of 70 nm or more and 600 nm or less and a DBP oil absorption number of 15 ml/100 g or more and 60 ml/100 g or less.2. The chloroprene rubber composition according to claim 1 , wherein the chloroprene rubber contains 60 mass % or more and 100 mass % or less of a xanthogen-modified chloroprene rubber and 0 mass % or more and 40 mass % or less of a mercaptan-modified chloroprene rubber.3. The chloroprene rubber composition according to claim 1 , further comprising claim 1 ,with respect to 100 parts by mass of the chloroprene rubber,0.1 part ...

RUBBER COMPOSITION AND TIRE

A rubber composition and a tire that can ensure the balance between the vulcanization speed and the foaming speed are provided. A rubber composition comprises: a diene-based rubber component; a foaming agent generating carbon dioxide; a fatty acid metal salt; and urea, wherein a content of the foaming agent is 0.1 parts to 20 parts by mass with respect to 100 parts by mass the diene-based rubber component, a total content of the fatty acid metal salt and the urea is 0.1 parts to 20 parts by mass with respect to 100 parts by mass the diene-based rubber component, and a mass ratio of the fatty acid metal salt and the urea is 1:0.5 to 1:3.9. 1. A rubber composition for a tire comprising:a diene-based rubber component;a foaming agent generating carbon dioxide;a fatty acid metal salt; andurea,wherein a content of the foaming agent is 0.1 parts to 20 parts by mass with respect to 100 parts by mass the diene-based rubber component,a total content of the fatty acid metal salt and the urea is 0.1 parts to 20 parts by mass with respect to 100 parts by mass the diene-based rubber component, anda mass ratio of the fatty acid metal salt and the urea is 1:0.5 to 1:3.9.2. The rubber composition for a tire according to claim 1 ,wherein the fatty acid metal salt is at least one selected from the group consisting of zinc stearate and magnesium stearate.3. The rubber composition for a tire according to claim 1 ,wherein the foaming agent is baking soda.4. The rubber composition for a tire according to claim 1 ,wherein a content of the urea is 3 parts by mass or more with respect to 100 parts by mass the diene-based rubber component.5. The rubber composition for a tire according to claim 1 ,wherein the total content of the fatty acid metal salt and the urea is 5 parts by mass or more with respect to 100 parts by mass the diene-based rubber component.6. The rubber composition for a tire according to claim 1 ,wherein the content of the foaming agent is 5 parts by mass or more with respect ...

SEMICONDUCTIVE ROLLER

To provide a semiconductive roller which, when being used as a developing roller in combination with a positively chargeable toner, is capable of suppressing adhesion of the toner thereto to suppress reduction of image density, charging the toner to a higher toner charging level to ensure formation of higher-quality images, and suppressing reduction of toner charging level even after continuous repeated image formation to thereby suppress fogging of formed images for a longer period of time. 1. A semiconductive roller made of a crosslinking product of a rubber composition comprising a rubber component including an epichlorohydrin rubber and a chloroprene rubber , and having a fluorinated film formed in an outer peripheral surface thereof by treatment with fluorine gas.2. The semiconductive roller according to claim 1 , wherein the rubber component further includes at least one rubber selected from the group consisting of an acrylonitrile butadiene rubber and a styrene butadiene rubber.3. The semiconductive roller according to claim 2 ,wherein the rubber component includes three types of rubbers including the epichlorohydrin rubber, the chloroprene rubber and the acrylonitrile butadiene rubber,wherein the epichlorohydrin rubber is present in the rubber composition in a proportion of not less than 30 parts by mass and not greater than 70 parts by mass based on 100 parts by mass of the overall rubber component,wherein the chloroprene rubber is present in the rubber composition in a proportion of not less than 10 parts by mass and not greater than 30 parts by mass based on 100 parts by mass of the overall rubber component.4. The semiconductive roller according to claim 2 ,wherein the rubber component includes three types of rubbers including the epichlorohydrin rubber, the chloroprene rubber and the styrene butadiene rubber,wherein the epichlorohydrin rubber is present in the rubber composition in a proportion of not less than 20 parts by mass and not greater than 60 ...

Rubber compositions and methods of producing rubber compositions

A rubber composition contains: at least one rubber component selected from the group consisting of an ethylene propylene diene rubber, a chloroprene rubber, a nitrile rubber, and an acrylic rubber; 1.5 to 30 parts by mass of a fluorene-modified cellulose nanofiber per 100 parts by mass of the rubber component; and 30 to 120 parts by mass of a carbon-based filler per 100 parts by mass of the rubber component. A method of producing a rubber composition comprises: kneading a dispersion of a fluorene-modified cellulose nanofiber in a process oil and a rubber component to prepare a kneaded material; and mixing a vulcanizing agent into the kneaded material.

RUBBER-BASED COMPOSITION MODIFIER, AND VULCANIZATE AND MOLDED PRODUCT OF RUBBER COMPOSITION CONTAINING THE RUBBER-BASED COMPOSITION MODIFIER

A rubber-based composition modifier includes 100 parts by mass of a mixed rubber component containing a chloroprene rubber and at least one copolymer selected from ethylene/α-olefin copolymers and ethylene/α-olefin/unconjugated polyene copolymers, 10 to 60 parts by mass of magnesium oxide, 3 to 30 parts by mass of a softener, and 30 to 120 parts by mass of acetylene black, wherein the mixed rubber component has a Mooney viscosity, as determined by the method specified in JIS K6300, of 60 to 180 at 100° C.; the magnesium oxide has a BET specific surface area, as determined by the one point method specified in JIS Z8830, of 20 to 150 m/g; the softener contains a fatty acid ester-based plasticizer and an unsaturated fatty acid having a carbon number of 10 to 24 and containing an ester bond, a hydroxyl group, or both of them in part of the structure. 1. A rubber-based composition modifier , comprising 100 parts by mass of a mixed rubber component containing a chloroprene rubber and at least one copolymer selected from ethylene/α-olefin copolymers and ethylene/α-olefin/unconjugated polyene copolymers ,10 to 60 parts by mass of magnesium oxide,3 to 30 parts by mass of a softener, and30 to 120 parts by mass of acetylene black, wherein:the mixed rubber component has a Mooney viscosity, as determined by the method specified in JIS K6300, of 60 to 180 at 100° C.;{'sup': '2', 'the magnesium oxide has a BET specific surface area, as determined by the one point method specified in JIS Z8830, of 20 to 150 m/g;'}the softener contains a fatty acid ester-based plasticizer and an unsaturated fatty acid having a carbon number of 10 to 24 and containing an ester bond, a hydroxyl group, or both of them in part of the structure; and{'sup': '2', 'the acetylene black has a nitrogen adsorption specific surface area (N2SA), as determined by the method specified in JIS K6217-2, of 50 to 160 m/g.'}2. The rubber-based composition modifier according to claim 1 , wherein the chloroprene rubber is ...

ANTI-VIBRATION RUBBER

An anti-vibration rubber of the present invention is an anti-vibration rubber for washing machines. In temperature variance measurement of dynamic viscoelasticity at a frequency of 30 Hz, the anti-vibration rubber has a maximum loss factor at a temperature of −10° C. to 40° C., both inclusive, and has a loss factor of 0.4 or more in the entire temperature range of −10° C. to 40° C., both inclusive, at the frequency of 30 Hz. 16-. (Canceled)7. An anti-vibration rubber for washing machines wherein:in a temperature variance measurement of dynamic viscoelasticity at a frequency of 30 Hz, said anti-vibration rubber has a maximum loss factor at a temperature of −10° C. to 40 ° C., both inclusive,said anti-vibration rubber has a loss factor of 0.4 or more in an entire temperature range of −10° C. to 40° C., both inclusive, at the frequency of 30 Hz, anda compression set of said anti-vibration rubber is 30% or less.8. The anti-vibration rubber according to claim 7 , wherein:said anti-vibration rubber contains a polymer component,said polymer component substantially consists of butyl rubber,said anti-vibration rubber further contains of a tackifying resin, andsaid anti-vibration rubber comprises of 10 to 60 parts by mass of said tackifying resin, both inclusive, per 100 parts by mass of said polymer component.9. The anti-vibration rubber according to claim 8 , wherein said butyl rubber is halogenated butyl rubber.10. The anti-vibration rubber according to claim 7 , wherein said anti-vibration rubber further contains a metal oxide as a vulcanizing agent.11. The anti-vibration rubber according to claim 7 , wherein said anti-vibration rubber is a vulcanized rubber.12. The anti-vibration rubber according to claim 7 , wherein said anti-vibration rubber further contains a processing aid. The present invention relates to anti-vibration rubbers, and more particularly to anti-vibration rubbers for washing machines.Washing machines have leg rubbers, which are made of an elastic body, ...

Pneumatic Tire Assembly

A pneumatic tire assembly is provided and includes an annular tire, an annular inflatable inner tube, and an annular solid insulation tube. The annular inflatable inner tube is positioned within the annular tire. The annular solid insulation tube is positioned between the annular tire and the annular inflatable inner tube and includes an outer surface in contact with an inner surface of the annular tire and an inner surface in contact with an outer surface of the annular inflatable inner tube. 1. A pneumatic tire assembly , comprising:an annular tire having a tire outer surface and a tire inner surface;an inflatable inner tube positioned within the annular tire and having a tube inner surface and a tube outer surface; and an outer surface in contact with the tire inner surface, and', 'an inner surface in contact with the tube outer surface., 'an annular solid insulation tube positioned between the annular tire and the inflatable inner tube and having2. The pneumatic tire assembly according to claim 1 , wherein the annular solid insulation tube includes a solid body made from an insulation rubber composition.3. The pneumatic tire assembly according to claim 2 , wherein the solid body includes an inner tube receiving section positioned along the inner surface and extending into the solid body.4. The pneumatic tire assembly according to claim 3 , wherein the inflatable inner tubes forms to an inner shape of the inner tube receiving section made by the inner surface.5. The pneumatic tire assembly according to claim 4 , wherein the inner tube receiving section includes a top wall and a pair of side walls extending downward from the top wall and angled toward an axis separating two halves of the solid body.6. The pneumatic tire assembly according to claim 5 , wherein the solid body includes an inner wall receiving section positioned along the outer surface.7. The pneumatic tire assembly according to claim 6 , wherein the inner wall receiving section is hemispherical.8. ...

Elastomer composite including algae biomass filler

An algae-elastomer composite including an elastomer matrix; algae; and a mixing additive sufficient to achieve a desired property. The algae can be present in a milled condition having a particle size value of between about 10 and 120 microns. The algae is mixed with the elastomer matrix in a dry condition having a moisture content of below about 10%. A method of preparing the algae-based elastomer composite is provided that includes the steps of: premixing an elastomer matrix; adding an algae filler; adding a mixing additive that includes a plasticizer; forming an elastomer-algae blend by blending the algae and elastomer to a temperature sufficient to be further mixed, wherein the temperature is about 10° C. higher than the temperature sufficient for the elastomer alone; adding and mixing a curing or vulcanizing agent for the elastomer dispersing the elastomer-algae blend; and heating and curing the elastomer-algae blend into a final form.

Thermoplastic elastomer composition of an elastomer and a non-elastomeric polyolefin which is functionalized with an anhydride of an organic carboxylic acid

A thermoplastic elastomer composition is disclosed that includes an elastomer and a non-elastomeric polyolefin, which is functionalized with an anhydride of an organic carboxylic acid. Furthermore, the use of a mixture of an elastomer and a cross-linking agent for the elastomer for producing a thermoplastic elastomer composition are disclose. A further subject of the invention is the use of a non-elastomeric polyolefin which is functionalized with an anhydride of an organic carboxylic acid for producing a thermoplastic elastomer composition according to the invention. In addition, the invention relates to the use of a thermoplastic elastomer composition according to the invention for producing an article/composite material with a polyamide. The invention also relates to a process for producing a thermoplastic elastomer composition according to the invention as well as a composite material made of the thermoplastic elastomer composition according to the invention with a polyamide.

PLASTICIZER FOR HALOGEN-BASED RESIN

The present invention relates to [1] a plasticizer for a halogen-based resin including a condensate obtainable by an esterification reaction between a furan dicarboxylic acid compound and an aliphatic alcohol having 4 to 22 carbon atoms, in which the aliphatic alcohol includes a saturated aliphatic alcohol and an unsaturated aliphatic alcohol, and a content of the unsaturated aliphatic alcohol in the aliphatic alcohol is not more than 25% by mass; and [2] a halogen-based resin composition including the aforementioned plasticizer. The plasticizer has a plasticization performance for a halogen-based resin at a level identical to or higher than that of a phthalate-based plasticizer, and exhibits excellent effects of improving compatibility, heat resistance and cold resistance. 1. A plasticizer for a halogen-based resin comprising a condensate obtainable by an esterification reaction between a furan dicarboxylic acid compound and an aliphatic alcohol (A) having not less than 4 and not more than 22 carbon atoms , in which the aliphatic alcohol (A) comprises a saturated aliphatic alcohol (a1) and an unsaturated aliphatic alcohol (a2) , and a content of the unsaturated aliphatic alcohol (a2) in the aliphatic alcohol (A) is not more than 25% by mass.2. The plasticizer for a halogen-based resin according to claim 1 , wherein an average number of carbon atoms in the aliphatic alcohol (A) is not less than 6 and not more than 18.3. The plasticizer for a halogen-based resin according to claim 1 , wherein the aliphatic alcohol (A) is a liner aliphatic monovalent alcohol.4. The plasticizer for a halogen-based resin according to claim 1 , wherein the aliphatic alcohol (A) comprises a saturated linear aliphatic monovalent alcohol in an amount of not less than 60 mol %.5. The plasticizer for a halogen-based resin according to claim 1 , wherein the unsaturated aliphatic alcohol (a2) is an unsaturated aliphatic alcohol having not less than 14 and not more than 22 carbon atoms.6. The ...

CURABLE COMPOSITION FOR SOUND BARRIER FILM

A curable composition is provided comprising a curable rubber comprising: a ) 80.0-99.9 wt % of a chloroprene resin; b) 0.06-13 wt % of trimethyl thiourea; and c) 0.06-13 wt % of a benzothiazolesulfenamide, such as N-cyclohexyl-2-benzothiazoles-ulfenamide. The present disclosure additionally provides cured compositions comprising a rubber comprising a crosslinked chloroprene resin and a fire retardant particle system comprising: d) 5-95 wt % particulate magnesium hydroxide (Mg(OH)); and e) 5-95 wt % particulate aluminum trihydrate (Al(OH)). In some embodiments the particulate aluminum trihydrate (Al(OH)) has a mean particle size of greater than 30 microns and less than 400 microns, and more typically a mean particle size of greater than 82 microns. The present disclosure additionally provides sound barrier films comprising the cured compositions according to the present disclosure, in particular fire resistant sound barrier films. 1. A curable composition comprising a curable rubber comprising:a) 80.0-99.9 wt % of a chloroprene resin;b) 0.06-13 wt % of trimethyl thiourea; andc) 0.06-13 wt % of a benzothiazolesulfenamide.2. The curable composition according to wherein the benzothiazolesulfenamide is N-alkyl-2-benzothiazolesulfenamide claim 1 , wherein the alkyl group contains 2-10 carbon atoms and is straight claim 1 , branched claim 1 , or cyclic.3. The curable composition according to wherein the benzothiazolesulfenamide is N-cyclohexyl-2-benzothiazolesulfenamide.4. The curable composition according to additionally comprising a fire retardant particle system comprising:{'sub': '2', 'd) 5-95 wt % particulate magnesium hydroxide (Mg(OH)); and'}{'sub': '3', 'e) 5-95 wt % particulate aluminum trihydrate (Al(OH)).'}5. The curable composition according to wherein the particulate aluminum trihydrate (Al(OH)) has a mean particle size of greater than 30 microns and less than 400 microns.6. The curable composition according to wherein the particulate aluminum trihydrate (Al( ...

HEAT-RESISTANT CHLORINE-CONTAINING CROSSLINKED RESIN FORMED BODY AND METHOD FOR PRODUCING THE SAME, SILANE MASTER BATCH, MASTER BATCH MIXTURE AND FORMED BODY THEREOF, AND HEAT-RESISTANT PRODUCT

A production method comprising: (a) a step of melt-mixing a base resin containing a chlorinated polyethylene; an organic peroxide, an inorganic filler, and a silane coupling agent, in specific ratios, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch; (b) a step of mixing the silane master batch obtained in the step (a) with a silanol condensation catalyst, and then forming the resultant mixture; and conducting at least one of the melt-mixing in the step (a) and the mixing in the step (b) is performed in the coexistence of a chloroprene rubber or a polyvinyl chloride; a heat-resistant chlorine-containing crosslinked resin formed body produced by the method, a silane master batch, a mixture and formed body thereof, and a heat-resistant product. 1. A method for producing a heat-resistant chlorine-containing crosslinked resin formed body , comprising:(a) a step of melt-mixing 0.003 to 0.3 part by mass of an organic peroxide, 0.5 to 400 parts by mass of an inorganic filler, and more than 2 parts by mass and 15.0 parts by mass or less of a silane coupling agent, with respect to 100 parts by mass of a base resin containing a chlorinated polyethylene, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch;(b) a step of mixing the silane master batch obtained in the step (a) with a silanol condensation catalyst, and then forming the resultant mixture; and(c) a step of bringing the formed body obtained in the step (b) into contact with moisture, to cause crosslinking,wherein at least one of mixing of the melt-mixing in the step (a) and the mixing in the step (b) is performed in the coexistence of a chloroprene rubber or a polyvinyl chloride.2. The method for producing a heat-resistant chlorine-containing crosslinked resin formed body described in claim 1 ,wherein a content of the organic peroxide is 0.003 to 0.2 part by mass, ...

HEAT-RESISTANT CROSSLINKED RESIN FORMED BODY AND METHOD FOR PRODUCING THE SAME, SILANE MASTER BATCH, MASTER BATCH MIXTURE AND FORMED BODY THEREOF, AND HEAT-RESISTANT PRODUCT

A method that has a step (a) of melt-kneading 0.003 to 0.3 part by mass of an organic peroxide, 0.5 to 400 parts by mass of an inorganic filler, and more than 2 parts by mass and 15.0 parts by mass or less of a silane coupling agent, with respect to 100 parts by mass of a resin containing a halogen-containing resin, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch; a heat-resistant crosslinked resin formed body obtained by the method, a silane master batch, a mixture and a formed body thereof, and a heat-resistant product. 1. A method for producing a heat-resistant crosslinked resin formed body , comprising:(a) a step of melt-kneading 0.003 to 0.3 part by mass of an organic peroxide, 0.5 to 400 parts by mass of an inorganic filler, and more than 2 parts by mass and 15.0 parts by mass or less of a silane coupling agent, with respect to 100 parts by mass of a resin containing a halogen-containing resin, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch;(b) a step of mixing the silane master batch obtained in the step (a) with a silanol condensation catalyst, and then forming the resultant mixture; and(c) a step of bringing the formed body obtained in the step (b) into contact with moisture, to cause crosslinking.2. The method for producing the heat-resistant crosslinked resin formed body described in claim 1 , wherein a content of the organic peroxide is 0.005 to 0.1 part by mass.3. The method for producing the heat-resistant crosslinked resin formed body described in claim 1 , wherein a content of the silane coupling agent is 3 to 12.0 parts by mass.4. The method for producing the heat-resistant crosslinked resin formed body described claim 1 , wherein a content of the silane coupling agent is 4 to 12.0 parts by mass.5. The method for producing the heat-resistant crosslinked resin formed body described in claim 1 , ...

Article, in particular air spring bellows, a metal-rubber element, or a vibration damper

The invention relates to an article having a single-layered or multilayered main body having elastic properties, in particular an air spring bellows, a metal-rubber element or a vibration damper. To improve the flame-retardant properties the main body of the article consists of or contains at least one layer D which is constructed from a rubber mixture which is free from halogen-containing flame retardants and contains at least one carbon black having a BET surface area according to DIN-ISO 9277 between 35 and 140 m 2 /g and an oil absorption number (OAN) according to ISO 4656 between 70 and 140 ml/100 g.

HIGH PERFORMANCE TIRE

A high performance tire includes a tread produced by a process including vulcanizing a rubber composition including a rubber component, a carbon black component, and a plasticizer component. The rubber component includes styrene butadiene rubber in content in the range of 60 to 100 mass % with respect to 100 mass % of the rubber component, the carbon black component includes carbon black having DBP oil absorption of 130 cm/100 g or more and nitrogen adsorption specific surface area in the range of 100 to 125 m/g, and the carbon black has content in the range of 100 to 180 parts by mass and the plasticizer component has content in the range of 120 to 250 parts by mass with respect to 100 parts by mass of the rubber component such that the contents of the carbon black and plasticizer components satisfy (the carbon black component content)/(the plasticizer component content)≦0.9. 1. A high performance tire , comprising:a tread produced by a process comprising vulcanizing a rubber composition comprising a rubber component, a carbon black component, and a plasticizer component,{'sup': 3', '2, 'wherein the rubber component comprises a styrene butadiene rubber in a content in a range of 60 to 100 mass % with respect to 100 mass % of the rubber component, the carbon black component comprises a carbon black having a DBP oil absorption of 130 cm/100 g or more and a nitrogen adsorption specific surface area in a range of 100 to 125 m/g, and the carbon black has a content in a range of 100 to 180 parts by mass and the plasticizer component has a content in a range of 120 to 250 parts by mass with respect to 100 parts by mass of the rubber component such that the content of the carbon black component and the content of the plasticizer component satisfy (carbon black component content)/(plasticizer component content)≦0.9.'}2. The high performance tire according to claim 1 , wherein the plasticizer component includes a tackifying resin and a liquid diene-based polymer such that ...

ANTI-VIBRATION RUBBER

An anti-vibration rubber of the present invention is an anti-vibration rubber for washing machines. In temperature variance measurement of dynamic viscoelasticity at a frequency of 10 Hz, the anti-vibration rubber has a maximum loss factor at a temperature of 0° C. to 40° C., both inclusive, and has a loss factor of 0.5 or more in the entire temperature range of 0° C. to 40° C., both inclusive, at the frequency of 10 Hz. 1. A vulcanized anti-vibration rubber for washing machines , wherein:in a temperature variance measurement of dynamic viscoelasticity at a frequency of 10 Hz, said vulcanized anti-vibration rubber has a maximum loss factor at a temperature of 0° C. to 40 ° C., both inclusive, andsaid vulcanized anti-vibration rubber has a loss factor of 0.5 or more in an entire temperature range of 0° C. to 40° C., both inclusive, at the frequency of 10 Hz.2. The vulcanized anti-vibration rubber according to claim 1 , wherein:said vulcanized anti-vibration rubber contains a polymer component, andsaid polymer component mainly contains a butyl rubber.3. The vulcanized anti-vibration rubber according to claim 2 , wherein:said butyl rubber is a halogenated butyl rubber.4. The vulcanized anti-vibration rubber according to claim 1 , wherein:said vulcanized anti-vibration rubber further contains a metal oxide as a vulcanizing agent.5. The vulcanized anti-vibration rubber according to claim 1 , wherein:said vulcanized anti-vibration rubber further contains a tackifying resin.6. The vulcanized anti-vibration rubber according to claim 5 , wherein:said tackifying resin has a melting point of 120° C. or higher.7. The vulcanized anti-vibration rubber according to claim 1 , wherein:said vulcanized anti-vibration rubber further contains a processing aid. The present invention relates to anti-vibration rubbers, and more particularly to anti-vibration rubbers for washing machines.Washing machines have leg rubbers, which are made of an elastic body, at the four corners of their ...

ARTICLE, IN PARTICULAR AIR SPRING BELLOWS, A METAL-RUBBER ELEMENT, OR A VIBRATION DAMPER

The invention relates to an article having a single- or multi-layered main body having elastic properties, in particular an air spring bellows, a metal-rubber element or a vibration damper. 17.-. (canceled)8. An article comprising at least a single-layered main body having elastic characteristics , wherein at least a layer D of the main body is constructed from a rubber mixture which is free from halogen-containing flame retardants and contains a first aluminum trihydrate (ATH_1) and at least one further aluminum trihydrate (ATH_2) and at least one amorphous silicic acid having spherical particle geometry , and wherein the first aluminum trihydrate (ATH_1) and the at least one further aluminum trihydrate (ATH_2) each have a different particle size; and ,{'sub': 50', '50, 'wherein particle size Dof the first aluminum trihydrate (ATH_1) determined by laser diffraction is between 0.1 and 0.6 μm and the at least one further aluminum trihydrate (ATH_2) has a particle size Ddetermined by laser diffraction of between 0.9 and 1.5 μm.'}9. The article as claimed in claim 8 , wherein the first aluminum trihydrate (ATH_1) is incorporated in the layer D in an amount of from 15 to 40 phr.10. The article as claimed in claim 8 , wherein the at least one further aluminum trihydrate (ATH_2) is incorporated in the layer D in an amount of from 40 to 70 phr.11. The article as claimed in claim 8 , wherein the rubber mixture of the layer D further comprises a combination of hydromagnesite and huntite.12. The article as claimed in claim 8 , wherein the layer D comprises 100 phr of CR or 100 phr of a blend of CR and NR (CR/NR) as the rubber component.13. The article as claimed in claim 8 , wherein the article is an air spring bellows claim 8 , a metal-rubber element claim 8 , a vibration damper claim 8 , a damping element of a bearing of a bushing claim 8 , a damping element of a multilayered spring claim 8 , a damping element of a conical spring claim 8 , a tubular body or a drive belt. ...

LAMINATED RUBBER HOSE AND METHOD FOR MANUFACTURING THE SAME

Provided is a method for manufacturing a laminated rubber hose that includes a first layer and a second layer laminated on an outer surface of the first layer, the first layer containing a thermosetting resin in an amount of 4.5 parts by mass or less relative to 100 parts by mass of a rubber component, the method including laminating the second layer on the outer surface of the first layer with the outer surface of the first layer maintained at a temperature range of 65° C. or more and 105° C. or less. 1. A method for manufacturing a laminated rubber hose that includes a first layer and a second layer laminated on an outer surface of the first layer , the first layer containing a thermosetting resin in an amount of 4.5 parts by mass or less relative to 100 parts by mass of a rubber component , the method comprising laminating the second layer on the outer surface of the first layer with the outer surface of the first layer maintained at a temperature range of 65° C. or more and 105° C. or less.2. The method for manufacturing a laminated rubber hose of claim 1 , further comprisingheating the first layer to make a temperature of the outer surface of the first layer within a temperature range of 65° C. or more and 105° C. or less before the laminating.3. The method for manufacturing a laminated rubber hose of claim 1 , further comprisingpreparing a rubber material for the second layer containing a thermosetting resin, whereinat the laminating, the second layer is laminated on the outer surface of the first layer from the rubber material.4. The method for manufacturing a laminated rubber hose of claim 3 , whereina content of the thermosetting resin in the rubber material for the second layer is 4.5 parts by mass or less relative to 100 parts by mass of a rubber component of the rubber material.5. The method for manufacturing a laminated rubber hose of claim 1 , whereinthe thermosetting resin contained in the first layer is a phenolic resin.6. The method for ...

Elastomeric Article

An accelerator-free elastomeric formulation comprising base polymers, crosslinkers, stabilizers, an activator, an antioxidant, a pigment, a wax, an antifoam and a pH adjuster. A method of preparing an accelerator-free elastomeric formulation, comprising the steps of mixing Base polymer A with Crosslinker A to produce mixture A, adding while stirring Stabilizer A, Crosslinker B, an activator, an antioxidant, a pigment, a wax and an antifoam one after another with no particular order and followed by a pH adjuster into the mixture A to produce mixture B, adding Base polymer B and Stabilizer B one after another with no particular order into the mixture B to produce an accelerator-free elastomeric formulation and allowing the accelerator-free elastomeric formulation to mature. 1. An accelerator-free elastomeric formulation , comprising:(a) base polymers, wherein the base polymers are a mixture of Base polymer A and Base polymer B, wherein the Base polymer A is used in an amount ranging between 30 phr to 50 phr and wherein the Base polymer B is used in an amount ranging between 50 phr to 70 phr;(b) crosslinkers, wherein the crosslinkers are a mixture of Crosslinker A and Crosslinker B, wherein the Crosslinker A is used in an amount ranging between 0.40 phr to 1.00 phr based on total dry weight of the base polymers and wherein the Crosslinker B is used in an amount ranging between 0.10 phr to 0.40 phr based on total dry weight of the base polymers;(c) stabilizers, wherein the stabilizers are base polymer specific, wherein the stabilizer used with Base polymer A is Stabilizer A and the stabilizer used with Base polymer B is Stabilizer B, wherein the Stabilizer A is used in an amount ranging between 0.15 phr to 1.00 phr based on total dry weight of the base polymers and wherein the Stabilizer B is used in an amount ranging between 0.50 phr to 2.50 phr based on total dry weight of the base polymers;(d) an activator, wherein the activator is used in an amount ranging between 0 ...

ARTICLE, IN PARTICULAR AIR SPRING BELLOWS, A METAL-RUBBER ELEMENT, OR A VIBRATION DAMPER

The invention relates to an article having a single- or multi-layered main body having elastic properties, in particular an air spring bellows, a metal-rubber element or a vibration damper. 17-. (canceled)8. An article comprising at least a single-layered main body having elastic characteristics , wherein at least a layer D of the main body is constructed from a rubber mixture which is free from halogen-containing flame retardants , wherein the rubber mixture comprises at least one carbon black having a BET surface area according to DIN-ISO 9277 between 35 and 140 m/g and an oil absorption number (OAN) according to ISO 4656 between 70 and 140 ml/100 g , a first aluminum trihydrate (ATH_1) and at least a further aluminum trihydrate (ATH_2) , wherein the first aluminum trihydrate (ATH_1) and the further aluminum trihydrate (ATH_2) each have a different particle size; and ,{'sub': 50', '50, 'wherein the particle size dof the first aluminum trihydrate (ATH_1) determined by laser diffraction is between 0.1 and 0.6 μm and the further aluminum trihydrate (ATH_2) has a particle size ddetermined by laser diffraction of between 0.9 and 1.5 μm.'}9. The article as claimed in claim 8 , wherein the amount of carbon black is 5 to 30 phr.10. The article as claimed in claim 8 , wherein the first aluminum trihydrate (ATH_1) is incorporated in the layer D in an amount of from 30 to 150 phr.11. The article as claimed in claim 8 , wherein the at least one further aluminum trihydrate (ATH_2) is incorporated in the layer D in an amount of from 60 to 70 phr.12. The article as claimed in claim 8 , wherein the layer D comprises 100 phr of CR or 100 phr of a blend of CR and NR (CR/NR) as the rubber component.13. The article as claimed in claim 8 , wherein the article is an air spring bellows claim 8 , a metal-rubber element claim 8 , a vibration damper claim 8 , a damping element of a bearing of a bushing claim 8 , a damping element of a multilayered spring claim 8 , a damping element of a ...

INTER-PENETRATING ELASTOMER NETWORK DERIVED FROM GROUND TIRE RUBBER PARTICLES

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 polymeric matrix , comprising:combining vulcanized rubber particles, an auxiliary polymer comprising a reactive moiety, and an organometallic compound into a mixture, so as to induce delamination of a rubber matrix within the vulcanized rubber particles as coordinated with disrupting sulfidic linkages, so as to induce crosslinking of the auxiliary polymer into the polymeric matrix, and so as to induce a chemical reaction between the reactive moiety and a polyaromatic hydrocarbon, whereby the polymeric matrix sequesters the polyaromatic hydrocarbon.2. The method of claim 1 , wherein the organometallic compound is copper acetate.3. The method of claim 1 , wherein the auxiliary polymer is a polybutadiene and wherein the reactive moiety is an epoxide group.4. The method of claim 1 , wherein the reactive moiety is selected from the group consisting of an epoxide group and a urethane group.5. The method of claim 1 , wherein the reactive moiety is an acetate group.6. The method of claim 1 , wherein the auxiliary polymer is an elastomer.7. The method of claim 6 , wherein the elastomer is selected from the group consisting of butadiene claim 6 , natural rubber claim 6 , styrene butadiene rubber claim 6 , isobutylene-isoprene rubber claim 6 , styrene-1 claim 6 ,4-cis polybutadiene polymer claim 6 , trans-1 claim 6 ,4-polyisoprene claim 6 , cis-1 claim 6 ,4-polyisoprene claim 6 , natural polyisoprene claim 6 , synthetic polyisoprene claim 6 , chloroprene rubber claim 6 , halogenated butyl rubber claim 6 , ...

Tire curing bladders

An elastomeric composition for a curing bladder comprises isobutylene based elastomer, curative and a hydrocarbon polymer modifier comprising monomers selected from the group consisting of piperylenes, cyclic pentadienes, aromatics, limonenes, pinenes, amylenes, and combinations thereof, wherein the cyclic pentadienes comprise at least 10 weight percent of the monomers by total weight of the monomers. Also disclosed are a tire curing bladder made from the elastomeric composition, a tire curing press containing the bladder, a method of making the tire curing bladder, an improvement to the process of making the tire curing bladder to improve processability of the mixture and fatigue life and DeMattia cut growth, a method of making a tire using the tire curing bladder, and an improvement to the process of making a tire to extend a pull point of the curing bladder and/or to reduce the curing time for the tire construct.

Very soft thermoplastic elastomer compositions

The present invention relates to a soft thermoplastic elastomer composition comprising a blend of (a) less than about 40% to about 15% by weight, based on the amount of (a)+(b), of at least one thermoplastic polyolefin resin (b) more than about 60% to about 85% by weight, based on the amount of (a)+(b), of a combination of (i) at least one at least partially cured rubber selected from monoolefin copolymers and (ii) at least one at least partially cured rubber selected from homopolymers or copolymers of conjugated dienes, copolymers of a conjugated diene with a monoolefin, and mixtures thereof, and (c) about 30% to 70% by weight, based on the amount of (a)+(b)+(c) , of at least one processing oil and a method for preparing same.

Vulcanizable rubber compound with improved tackifier

A vulcanizable rubber compound is provided which has an improved low cost tackifier included with the vulcanizable rubber. The tackifier is the reaction product, preferably an organic peroxide initiated reaction product, of a mixture of asphalt and an elastomer.

Thermoelastic composition of ethylene-1-olefin copolymer and rubber

Thermoplastic compositions are prepared by blending an ethylene-hexene and/or an ethylene-butene copolymer resin, with a rubber and dynamically vulcanizing the rubber to form a heat-shrinkable dynamically vulcanized alloy of exceptionally low hardness, and great flexibility and elasticity. The preferred rubber is halogenated butyl rubber. Uncured rubber can be included in the composition.

Dynamically cured thermoplastic olefin polymers (e-76)

Rubber compositions

Patent JPH0324498B2

Gangway bellows for rolling stock

A gangway connection composition for a rolling stock in the present invention enables manufacturing of a gangway connection (2) for a rolling stock by mixing 4-6 parts by weight of zinc oxide (ZnO), 3-5 parts by weight of magnesium oxide (MgO), 1-2 parts by weight of a stearic acid, 1-3 parts by weight of a dispersing agent, 2-10 parts by weight of an anti-aging agent, 8-16 parts by weight of a non-toxic flame retarding agent, 50-65 parts by weight of carbon black, 25-40 parts by weight of any one among a plasticizer or a flame-retardant plasticizer, and 0.6-1.0 parts by weight of a vulcanization accelerator with 100 parts by weight of neoprene rubber, thereby improving durability and minimizing combustion in fire to satisfy quality and safety.

轮胎硫化气囊

用于硫化气囊的弹性组合物包含异丁烯基弹性体、硫化剂和烃聚合物改性剂，该烃聚合物改性剂包含选自戊间二烯、环状戊二烯、芳族化合物、苧烯、蒎烯、戊烯和它们的组合的单体，其中所述环状戊二烯占所述单体的至少10wt%，按单体的总重量计。还公开了由所述弹性组合物制造的轮胎硫化气囊，含所述气囊的轮胎硫化压机，制造所述轮胎硫化气囊的方法，对制造所述轮胎硫化气囊的工艺的改进以改进所述混合物的可加工性和疲劳寿命和DeMattia切口生长，使用所述轮胎硫化气囊制造轮胎的方法，和对制造轮胎的工艺的改进以延长硫化气囊的拉伸点和/或减少轮胎构造物的硫化时间。

Eco-friendly asphalt waterproof sheet using recycling rubber and the manufacturing method the same

본 발명은 재활용 고무를 이용한 아스팔트 방수시트 및 이의 제조방법에 관란 것으로, 보다 상세하게는 재활용 합성고무 10 ~ 20 중량%, 스트레이트 아스팔트 40 ~ 60중량%, SBS 5 ~ 10중량%, C-5 또는 C-9 석유수지 3~5 중량%, 충진제 10 ~ 25 중량%를 포함하되, 상기 재활용 합성고무는 제1차 합성고무 제조 후 이를 이용하여 제조하는 데, 제1차 합성고무는 재활용 EDPM 고무 8~15중량%, 재활용 PE 45~55중량%, NBR 35 ~ 42중량% 및 첨가제 DCP(Di-Cumyl Peroxide) 3 ~ 5중량%가 포함되도록 혼합하여 제조하며, 상기 재활용 합성고무는 제1차 합성고무 55 ~ 65중량%, SBS 25 ~ 35중량% 및 CR 고무 8 ~ 12중량%를 포함되도록 혼합하여 제조하는 것을 특징으로 하는 재활용 고무를 이용한 아스팔트 방수시트 및 이의 제조방법을 제공한다. The present invention relates to an asphalt waterproof sheet using recycled rubber and a method for manufacturing the same, more specifically, 10 to 20% by weight of recycled synthetic rubber, 40 to 60% by weight of straight asphalt, 5 to 10% by weight of SBS, C-5 or C-9 3~5 wt% of petroleum resin and 10~25 wt% of filler, but the recycled synthetic rubber is produced using the first synthetic rubber and then produced using it. The first synthetic rubber is recycled EDPM rubber 8 ∼15% by weight, 45~55% by weight of recycled PE, 35~42% by weight of NBR and 3~5% by weight of additive DCP (Di-Cumyl Peroxide) are prepared by mixing, and the recycled synthetic rubber is the primary synthesis Provided is an asphalt waterproof sheet using recycled rubber and a method for manufacturing the same, comprising 55 to 65% by weight of rubber, 25 to 35% by weight of SBS and 8 to 12% by weight of CR rubber.

Lead-free epichlorohydrin rubber composition having excellent storage stability and processability

본 발명에서는 에피클로로히드린 고무 조성물에 있어서, 트리아진계 주가교제; 인계 2차 가교제; 및 티오프탈이미드, 설폰아마이드유도체, 벤조산으로 이루어진 그룹에서 선택된 어느 하나로 구성된 가교지연제;를 포함하는 우수한 저장안정성과 가공성을 갖는 무연계 에피클로로히드린 고무 조성물을 개시한다. 이러한 본 발명은 종래의 납성분 안정제 함유 에피클로로히드린 고무 조성물의 기계적 물성과 노화물성 수준을 만족하면서도 보다 친환경적 대응이 가능한 무연계 고무 조성물인 한편, 기존의 트리아진계 가교제/무연계 안정제 조합과는 달리, 생지고무의 점도상승으로 인한 가공성 저하가 개선되고 스코치의 트러블로 인한 보관수명및 저장안정성 저하가 개선되어 우수한 가공성과 저장안정성을 보유하게 되는 효과를 달성한다. In the present invention, epichlorohydrin rubber composition, triazine-based main crosslinking agent; Phosphorus secondary crosslinking agents; And a crosslinking delay agent composed of any one selected from the group consisting of thioptalimide, sulfonamide derivatives, and benzoic acid; and a lead-free epichlorohydrin rubber composition having excellent storage stability and processability. The present invention is a lead-free rubber composition that satisfies the mechanical properties and the sinterability level of the conventional lead-containing stabilizer-containing epichlorohydrin rubber composition, while being more environmentally friendly, while the conventional triazine-based crosslinking agent / lead-free stabilizer combination On the contrary, the reduction in the workability due to the increase in viscosity of the raw rubber is improved and the storage life and the storage stability due to the trouble of scorch are improved to achieve the effect of retaining excellent processability and storage stability.

一种抗撕裂高耐磨氯丁橡胶材料

本发明公开了一种抗撕裂高耐磨氯丁橡胶材料，其原料按重量份包括：氯丁橡胶40‑60份，氯醚橡胶10‑20份，丁腈橡胶15‑25份，液态环氧树脂4‑8份，四氟乙烯4‑10份，聚氨酯6‑12份，浮石粉4‑10份，玻璃微珠6‑18份，水合硅酸钙10‑20份，海泡石粉10‑20份，茶皂素复合蕉麻纤维15‑25份，二甲基丙烯酸乙二醇酯0.5‑1.3份，过氧化二异丙苯1.5‑2.5份，异氰尿酸三烯丙酯1.5‑2.5份，邻苯二甲酸辛酯1‑2份，磷酸三甲酯2‑4份。本发明提出的抗撕裂高耐磨氯丁橡胶材料，抗撕裂、耐磨性能优秀，弹性好，缓冲性能极为优异，防撞能力极好。

Thermoplastic elastomer composition

Dynamically partially cured blends of monoolefin copolymer rubber with a polyolefin resin and a conjugated diene rubber are thermoplastic and can be fabricated into useful articles by conventional processing methods such as injection molding or extrusion.

一种氯丁胶料及其制备方法

本发明提供一种氯丁胶料及其制备方法，该氯丁胶料的配方中含有的组分包括氯丁胶、炭黑、无机阻燃剂、碳酸钙、氧化镁、抗热氧老化防老剂、硬脂酸、石蜡、氧化锌、非污染性稳定剂；各组分的重量根据产品特殊技术要求确定。该氯丁胶料的制备方法包括如下步骤：将除碳酸钙之外的组分投入高速混炼机混炼5分钟后加入碳酸钙，再混炼5～10分钟；将混炼所得物料放在双辊炼塑机开炼塑化3～5分钟，形成分散均匀、柔软光滑的胶片后下片；将所得胶片经φ75～φ180mm双阶造粒机在90～150℃下捏合造粒；将所得物料挤压剪切，以获得颗粒状的氯丁胶料，然后包装以投入使用。本发明所制得的氯丁胶料具有低烟、低卤、耐温、阻燃防火特性，将其用于制备电线电缆，安全又环保。

Chloroprene rubber composition, vulcanized product thereof and molded article

Waterproofing compound and method for manufacturing thereof

The present invention relates to a waterproofing material. Based on 50 parts by weight of chlorosulfonated polyethylene (CSM), the waterproofing material comprises a first synthetic rubber made of a liquid mixed with 35-45 parts by weight of dioctyl terephthalate (DOTP) and 5-15 parts by weight of styrene-butadiene-styrene (SBS); a second synthetic rubber produced by mixing 35-45 parts by weight of styrene-butadiene-rubber (SBR), 5-15 parts by weight of styrene-butadiene-styrene (SBS), and 45-55 parts by weight of chloroprene-rubber (CR) through an extruder; and straight asphalt consisting of the first synthetic resin, the second synthetic resin, a natural fiber, silica fumes, waste tires, and a filler. Based on 40 parts by weight of the straight asphalt, 10-15 parts by weight of the first synthetic rubber, 7-10 parts by weight of the second synthetic rubber, 1-3 parts by weight of the natural fiber, 3-5 parts by weight of the silica fumes, 3-5 parts by weight of the waste tires, and 10-25 parts by weight of the filler are included.

一种高效无卤膨胀阻燃橡胶体系及其制备方法

本发明提供的高效无卤膨胀阻燃橡胶体系包含的组分及配比按质量份计如下：橡胶100份，补强剂30～50份，结构控制剂0～10份，硫化剂0.5～2份，促进剂0.1～2份，阻燃剂1～20份，协效剂1～20份，该橡胶体系的拉伸强度为5.4～33.8MPa，LOI为28.9～45.5％，UL-94为V-1～V-0。本发明还提供了制备方法。本发明提供的橡胶体系因添加有与之匹配的阻燃剂和阻燃协效剂，不仅添加量少，对机械性能影响很小，且还能同时达到很好的阻燃效果。

Insulating Rubber Composition Comprising Reinforcing Filler

본 발명은 보강 충진재를 포함하는 고체 로켓 추진기관 내열재용 고무 조성물에 관한 것으로서, 본 발명의 내열재용 고무 조성물은, EPDM 및 폴리클로로프렌을 포함하는 모재; 충진제; 및 아라미드 섬유, 실리카 재료 또는 이 둘을 포함하는 보강 충진제;를 포함하는 것이다. The present invention relates to a rubber composition for a heat resistant material for a solid rocket propulsion engine including a reinforcing filler, wherein the rubber composition for a heat resistant material of the present invention comprises: a base material comprising EPDM and polychloroprene; Filler; And a reinforcing filler comprising an aramid fiber, a silica material, or both.

一种环氧丙烯酸酯电缆

本发明公开了一种环氧丙烯酸酯电缆，它是由电缆线芯以及电缆线芯外部包裹的保护套组成，所述保护套的原料按重量份的组分为：氯丁橡胶110-120份、环氧丙烯酸酯5-9份、玻璃纤维10-14份、纳米氧化锌2-6份、有机硅1-5份、氟橡胶1-3份、白炭黑2-4份、饱和聚酯1-5份、聚醚多元醇1-5份、钛5-9份、镍1-3份、辛酸亚锡3-5份、邻苯二甲酸二烯丙酯1-6份。该电缆导电性能好，具有优良的防静电、抗干扰和耐高温性能，用途广泛，主要运用于发电、冶金、化工石油等领域，同时，本发明还具有抗机械损伤，抗拖拽，防水，耐酸碱，耐腐蚀等性能均优良。