Process for producing a halogen-containing polycarbonate resin

Details Process for producing a halogen-containing polycarbonate resin Process for producing a halogen-containing polycarbonate resin

C - Chemistry, Metallurgy

08

G

402/174, 400/560

C08G 64/18 (2006.01)

Patent

CA 1140697

ABSTRACT OF THE DISCLOSURE A halogen-containing polycarbonate resin is formed by co-polymerizing: (a) 15 to 55 parts by weight of u polycarbonate oligomer with terminal chloroformate groups, having a number average molecular weight of 500 to 10,000 and containing no halogen or less than 4% by weight of halogen, (b) 20 to 80 parts by weight of a halogen-containing polycarbonate oligomer with terminal chloroformate groups, having a number average molecular weight of 1,000 to 10,000 and containing 6 to 30% by weight halogen, and (c) 5 to 25 parts by weight of bisphenol A.

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