Curable rubber compositions

Details Curable rubber compositions Curable rubber compositions

C - Chemistry, Metallurgy

08

J

400/1100, 6/115,

C08J 3/24 (2006.01) C08K 3/06 (2006.01) C08K 5/17 (2006.01) C08K 5/372 (2006.01) C08L 21/00 (2006.01)

Patent

CA 1114550

Abstract of the Disclosure The invention is a curable composition consisting essentially of (A) at least one rubber selected from the group consisting of a stryene- butadiene rubber, an acrylonitrile-butadiene rubber, a polybutadiene rubber, an acrylonitrile-isoprene rubber, an alfin rubber, a butadiene-methyl methacrylate rubber, a polyisoprene rubber, an acrylonitrile-butadiene- isoprene rubber, a carboxylated acrylonitrile-butadiene rubber, a propylene oxide rubber, a propylene-butadiene rubber, and natural rubber, (B) at least one curing agent selected from the group consisting of sulfur and sulfur donors, and (C) at least one compound, as a vulcanization accelerator not requiring an activator, selected from the group consisting of arginine, lysine, hydroxylysine, ornithine, proline, hydroxyproline, leucine, isoleucine, histidine, tryptophan, threonine, serine, homoserine, alanine, phenylalanine, valine, methionine, citrulline, tryrosine, asparagine, aspartic acid, glutamine,glutamic acid, and salts of these amino acids. The specified amino acids exhibit very good vulcanization accelerating effects when vulcanizing the aforementioned rubbers with sulfur and/or a sulfur donor.

268665

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