Abstract: The copolymer latex for non-contact coating of the present invention is obtained by emulsion polymerization of a monomer containing from 23 to 58% by mass of an aliphatic conjugated diene monomer, from 0.1 to 7% by mass of an ethylenic unsaturated carboxylic acid monomer, from 5 to 40% by mass of a vinyl cyanide compound, and from 0 to 71.9% by mass of other monomer capable of being copolymerized with the other monomers (provided that the total amount of the monomers is 100% by mass), and polymer particles contained in the latex have an average particle diameter of from 50 to 150 nm. A coating composition for paper containing the latex, a pigment and the like is suitable for a non-contact coating method, such as a curtain coater and a spray, to obtain coated paper excellent in surface strength, printing gloss and the like with good runnability.

Abstract: An object of the present invention is to provide a hollow polymer particle having well-balanced properties such as gloss and coating strength, a process for producing the particle, a paper coating composition using the particle, and a coated paper.

Abstract: A silicone-based composite rubber composition having good processability on rolls which is obtained by compounding a rubber-forming polymer (A) comprising a polyorganosiloxane and an organic rubber, a silicon compound (B) having at least two hydrolyzable groups per molecule which are able to undergo hydrolysis and condensation reactions with silanols, and a heavy metal compound, amine, or quaternary ammonium salt (C) which catalyzes the hydrolysis and condensation reactions, and allowing the resulting formulation to undergo hydrolysis and condensation reactions while the formulation is kept being deformed by shearing; a crosslinkable, silicone-based composite rubber composition comprising the silicone-based composite rubber composition having blended therewith an organic rubber-crosslinking agent; and an oil seal and a rubber hose both obtained from the crosslinkable, silicone-based composite rubber composition.

Abstract: A rubber composition obtained by compounding (B) from 0.005 to 50 parts by weight of an polyorganohydrogensiloxane and (C) from 0.00001 to 1 part by weight of a compound of a transition metal belonging to the group VIII with (A) 100 parts by weight of a rubber-forming polymer mainly comprising (I) from 3 to 70% by weight of a polyorganosiloxane represented by the formula: ##EQU1## wherein R represents a substituted or unsubstituted monovalent organic group, 0.02 to 10 mole % of which being a vinyl group; and a represents a number of from 1.900 to 2.004,and having a degree of polymerization of from 500 to 10,000 and (II) from 30 to 97% by weight of organic rubber, and subjecting the resulting compound to hydrosilylation while effecting shear deformation. The rubber composition is excellent in roll processing properties, mechanical strength, heat resistance, and low-temperature property and is suitable as oil seal and rubber hose.

Abstract: A vulcanizable rubber composition comprising (1) 100 parts by weight of a polymer composition comprising(I) a vinylidene fluoride resin,(II) at least one rubber selected from the group consisting of acrylic rubbers, .alpha.,.beta.-unsaturated nitrile-conjugated diene copolymer rubbers and hydrides of .alpha.,.beta.-unsaturated nitrile-conjugated diene copolymer rubbers, said acrylic rubber consisting of (A) 30 to 99.9% by weight of an alkyl acrylate and/or an alkoxy-substituted alkyl acrylate, (B) 0.1 to 10% by weight of a crosslinkable monomer and (C) 0 to 70% by weight of another ethylenically unsaturated compound copolymerizable with (A) and (B) (the sum of (A), (B) and (C) is 100% by weight) and said .alpha.,.beta.-unsaturated nitrile-conjugated diene copolymer rubber consisting of (D) 10 to 60% by weight of an .alpha.,.beta.

Abstract: A rubber composition that is prepared by reacting an organic peroxide, under shear deformation, with 3-70 parts by weight of silicone rubber (I), 30-97 parts by weight of a saturated elastomer (II) that substantially fails to be crosslinked with an organic peroxide when it is used alone, and 0-20 parts by weight of another elastomer (III) that is co-crosslinkable with component (I) in the presence of an organic peroxide and which is also co-crosslinkable or highly miscible with component (II) [where (I)+(II)+(III)=100 parts by weight].

Abstract: A vulcanizable rubber composition comprising (1) 100 parts by weight of a polymer composition comprising(I) a vinylidene fluoride resin,(II) at least one rubber selected from the group consisting of acrylic rubbers, .alpha.,.beta.-unsaturated nitrile-conjugated diene copolymer rubbers and hydrides of .alpha.,.beta.-unsaturated nitrile-conjugated diene copolymer rubbers, said acrylic rubber consisting of (A) 30 to 99.9% by weight of an alkyl acrylate and/or an alkoxy-substituted alkyl acrylate, (B) 0.1 to 10% by weight of a crosslinkable monomer and (C) 0 to 70% by weight of another ethylenically unsaturated compound copolymerizable with (A) and (B) (the sum of (A), (B) and (C) is 100% by weight) and said .alpha.,.beta.-unsaturated nitrile-conjugated diene copolymer rubber consisting of (D) 10 to 60% by weight of an .alpha.,.beta.