Silicone macromers and thermoplastic flame retardant...

Details Silicone macromers and thermoplastic flame retardant... Silicone macromers and thermoplastic flame retardant...

C - Chemistry, Metallurgy

08

G

402/13, 400/2007

C08G 77/16 (2006.01) C07F 7/18 (2006.01) C08G 77/12 (2006.01) C08G 77/38 (2006.01) C08G 77/42 (2006.01) C08G 77/44 (2006.01) C08G 77/46 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2025289

RD-19,575 SILICONE MARCOMERS AND THERMOPLASTIC FLAME RETARDANT SILICON-POLYPHENYLENE ETHER GRAFT COPOLYMERS OBTAINED THEREFROM A silicone cyclic, such as hexaorganotrisiloxane is lithiated with an alkyl lithium compound followed by treatment with a diorganohalosilane to produce a polydiorganosiloxane having a terminal diorganohydridesiloxy unit. The platinum catalyzed addition of a 2-alkenyl-6- organophenol results in the production of a phenol-siloxane macromer. Conversion of the phenol-siloxane macromer to a silicone polyphenylene ether graft copolymer is effected by oxidatively coupling the 2,6-diorganophenol to the phenol- siloxane macromer.

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