Patent ID: 6482894
Filing Date: 2002-11-19
Classification: C08G,C08K,Y10T

Abstract:
A liquid ebonite mixture for coating comprising:a) a first component comprising: i) first unsaturated polymers having first functional groups capable of reaction at ambient temperature with or without a catalyst, wherein each of the first functional groups is selected from the group consisting of hydroxyl, epoxy, acrylic, and their combinations; ii) a vulcanization activator; iii) a sulfur vulcanization agent, wherein the mass parts of the sulfur vulcanization agent in the mixture is approximately 15-50; and b) a second component comprising: i) second unsaturated polymers having second functional groups that react with the first functional groups of the first unsaturated polymers at ambient temperature, wherein each of the second functional groups is selected from the group consisting of isocyanate and maleic anhydride, wherein the first and second unsaturated polymers contain sufficient unsaturated backbones to allow vulcanization with the sulfur vulcanization agent, wherein the second unsaturated polymers are thermodynamically compatible with the first unsaturated polymers of the first component so that macroscopic phase separations will not occur and the sulfur vulcanization can happen homogeneously throughout the coating, and wherein the first and second unsaturated polymers are selected from the group consisting of polybutadiene, polyisoprene, poly(butadiene-co-acrylonitrile), poly(isobutyl-co-isoprene), and poly(ethylene-co-propylene-co-diene).