Polyorganosiloxane/polyvinyl-based graft polymers, process...

Details Polyorganosiloxane/polyvinyl-based graft polymers, process... Polyorganosiloxane/polyvinyl-based graft polymers, process...

C - Chemistry, Metallurgy

08

G

400/2009, 400/30

C08G 77/442 (2006.01) C08L 83/10 (2006.01)

Patent

CA 2039134

(8CT-4838/60) ABSTRACT OF THE DISCLOSURE A multi-stage polyorganosiloxane/polyvinyl-based graft polymer is provided by the co-homopolymerization of a silicone polymer and a polyvinyl polymer (e.g. polystyrene) and the subsequent graft polymerization of one or more stages of additional vinyl-type polymers. When the isolated multi-stage graft polymers are combined with thermoplastic resins and are molded, impact strength, weld line strength and thermal stability are markedly improved with no tendency to delaminate.

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