A rubber composition according to an embodiment includes: a rubber component comprising diene rubber; and fine particles which are formed of a specific polymer and have a glass transition point of 70 C. to 0 C. The fine particles are fine particles formed of a (meth)acrylate polymer having a constitutional unit represented by formula (1) or formed of a polymer having a constitutional unit represented by formula (4). In formula (1), R.sup.1 represents a hydrogen atom or a methyl group, and R.sup.2 represents an alkyl group having 4 to 18 carbon atoms. In formula (4), at least one of R.sup.11, R.sup.12, R.sup.13, R.sup.14, R.sup.15, and R.sup.16 represents an aliphatic hydrocarbon group having 3 to 8 carbon atoms, and the remainder represents a hydrogen atom or an aliphatic hydrocarbon group having 1 or 2 carbon atoms. ##STR00001##

The invention relates to an elastomeric film-forming composition (a) a carboxylated butadiene-based elastomer, (b) polychlorobutadiene in an amount of less than 30% by weight of the polymer content of the composition, and (c) one or more cross-linking agents. The invention also relates to dipped articles, gloves, methods of manufacture and uses involving the composition.

The invention relates to an elastomeric film-forming composition (a) a carboxylated butadiene-based elastomer, (b) polychlorobutadiene in an amount of less than 30% by weight of the polymer content of the composition, and (c) one or more cross-linking agents. The invention also relates to dipped articles, gloves, methods of manufacture and uses involving the composition.

The invention relates to an elastomeric film-forming composition (a) a carboxylated butadiene-based elastomer, (b) polychlorobutadiene in an amount of less than 30% by weight of the polymer content of the composition, and (c) one or more cross-linking agents. The invention also relates to dipped articles, gloves, methods of manufacture and uses involving the composition.

A thermoplastic vulcanizate is provided, including 10-50 parts by weight of a nylon plastic and 50-90 parts by weight of a cross-linked acrylic rubber polymer. The cross-linked acrylic rubber polymer is dispersed in the Nylon plastic. The cross-linked acrylic rubber polymer is formed by a modified acrylic rubber polymer having a hydrolysable silane group through crosslinking in the presence of water. In the modified acrylic rubber polymer having a hydrolysable silane group, a linkage group represented by formula (I) or formula (II) is between a backbone and the hydrolysable silane group:

##STR00001## wherein R1 is H or OH; R2 is H, ZSi(OR).sub.3 or C.sub.1-C.sub.10 hydrocarbon group; R3 is H or C.sub.1-C.sub.10 hydrocarbon group; Z is a divalent bridging group; R is individually C.sub.1-C.sub.10 hydrocarbon group. A manufacturing method of the thermoplastic vulcanizate is also provided.

The present invention relates to vulcanizable compositions comprising hydrogenated nitrile-diene-carboxylic ester copolymer and silica, to the production thereof and to vulcanizate, and to the use thereof in gaskets and belts.

The present invention relates to vulcanizable compositions comprising hydrogenated nitrile-diene-carboxylic ester copolymer and silica, to the production thereof and to vulcanizate, and to the use thereof in gaskets and belts.

A nitrile group-containing copolymer rubber including 10 to 60 wt % of an ,-ethylenically unsaturated nitrile monomer unit and 1 to 60 wt % of an ,-ethylenically unsaturated dicarboxylic acid monoester monomer unit, and having an iodine value of 120 or less, wherein a processability index Ipro (Ipro=CCSA) is 0.0030 or less, where the processability index Ipro is the product of the carboxyl group content CC, which is the number of moles of carboxyl groups per 100 g of nitrile group-containing copolymer rubber, and the absorbance area SA of a carboxylic anhydride group determined by infrared spectroscopy.

A nitrile group-containing copolymer rubber including 10 to 60 wt % of an ,-ethylenically unsaturated nitrile monomer unit and 1 to 60 wt % of an ,-ethylenically unsaturated dicarboxylic acid monoester monomer unit, and having an iodine value of 120 or less, wherein a processability index Ipro (Ipro=CCSA) is 0.0030 or less, where the processability index Ipro is the product of the carboxyl group content CC, which is the number of moles of carboxyl groups per 100 g of nitrile group-containing copolymer rubber, and the absorbance area SA of a carboxylic anhydride group determined by infrared spectroscopy.

Provided is a laminate which comprises a layer of a polyimide resin and a layer of an unvulcanized rubber composition, and wherein the rubber composition contains (A) a rubber component, (B) 20-100 parts by mass of a polyamide polyether elastomer per 100 parts by mass of the rubber component (A), (C) a condensation product of formaldehyde and a compound represented by formula (1) (wherein each of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is independently selected from the group consisting of a hydrogen atom, a hydroxyl group, an alkyl group having 1-8 carbon atoms, a hydroxyalkyl group having 1-8 carbon atoms and an alkoxide group having 1-8 carbon atoms), (D) a methylene donor and (E) a vulcanizing agent. A laminate according to the present invention exhibits improved bonding strength between a layer of a polyimide resin and a layer of a rubber composition.