Method of chain extending hydroxylated organosiloxanes

C - Chemistry – Metallurgy – 08 – G

Patent

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402/15, 400/5316

C08G 77/26 (2006.01) C08G 77/20 (2006.01) C08G 77/42 (2006.01) C08L 83/04 (2006.01)

Patent

CA 1074493

ABSTRACT OF THE DISCLOSURE Mixing methylvinyldi-(epsilon-caprolactamo)silane with an organosiloxane having silicon-bonded hydroxyl radicals increases the molecular weight by chain extension. This method is particularly useful in making high molecular weight polydiorganosiloxanes containing vinyl radicals from hydroxyl endblocked polydiorganosiloxane fluids.

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