Blend of rubber latices containing a hydrogenated rubber latex

Details Blend of rubber latices containing a hydrogenated rubber latex Blend of rubber latices containing a hydrogenated rubber latex

C - Chemistry, Metallurgy

08

L

C08L 7/02 (2006.01) C08C 19/02 (2006.01) C08L 9/10 (2006.01)

Patent

CA 2053974

The present invention relates to a blend of rubber latices comprising, based on dry weight, (A) from about 80 to about 50 phr of a latex selected from the group consisting of polybutadiene latex, natural rubber or polyisoprene latex, styrene-butadiene copolymer latex, acrylonitrile-butadiene copolymer latex, butadiene-isoprene copolymer latex, isoprene-isobutylene copolymer latex, styrene-isoprene-butadiene copolymer latex and mixtures thereof; and (B) from about 20 to about 50 phr of a hydrogenated rubber latex that is prepared in accordance with a process comprising: (l) combining an unsaturated polymer in latex form, which is derived from 5 to 100 percent by weight of a conjugated diene monomer and 95 to 0 percent by weight of an ethylenically unsaturated monomer, with (a) an oxidant selected from the group consisting of oxygen, air and hydroperoxides; (b) a reducing agent selected from hydrazine and hydrates thereof; and (c) a metal ion activator; (2) heating the mixture to a temperature from 0°C to the reflux temperature of the reaction mixture.

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