Patent ID: 7973093
Filing Date: 2011-07-05
Classification: C08J,Y10T

Abstract:
1. A foamed rubber member, produced through an impregnation treatment of a foamed elastic body with a treatment liquid containing an isocyanate compound and an organic solvent, the foamed elastic body being produced by foaming a base rubber, wherein the foamed rubber member exhibits a compression set smaller than that of the foamed elastic body before undergoing the impregnation treatment, and a percent increase in stress, with respect to the stress of the foamed elastic body before undergoing the impregnation treatment, of 50% or less, the base rubber comprises at least one species selected from the group consisting of epichlorohydrin rubber, acrylonitrile-butadiene rubber, natural rubber, isoprene rubber, styrene-butadiene rubber, butadiene rubber, chloroprene rubber, fluororubber, chlorinated polyethylene, acrylic rubber, and urethane rubber, and the treatment liquid comprises an isocyanate compound at a concentration of 0.1 to 3 mass %.