Organopolysiloxane-urethane-vinyl graft copolymers

Details Organopolysiloxane-urethane-vinyl graft copolymers Organopolysiloxane-urethane-vinyl graft copolymers

C - Chemistry, Metallurgy

08

F

400/2007

C08F 283/12 (2006.01) C08F 283/00 (2006.01)

Patent

CA 1152683

ABSTRACT OF THE DISCLOSURE A graft copolymer comprising (I) as a first polymeric moiety an organopolysiloxane with OH functional groups, (II) as a second polymeric moiety a polyester- urethane and, (III) units of vinyl monomers, units of the first and second polymeric moieties being linked via vinyl polymer bridges, all these units having been polymerized in the presence of mixtures of the fir-t and second polymeric moieties, is produced by polymeri- zing a suitable monomer dispersion The product is suited for replacing all or some of the organo- polysiloxane component in room temperature curable compositions containing organopolysiloxanes, silane cross-linking agents and a curing catalyst

365582

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