Branched, high-molecular weight thermoplastic polycarbonates

Details Branched, high-molecular weight thermoplastic polycarbonates Branched, high-molecular weight thermoplastic polycarbonates

C - Chemistry, Metallurgy

08

L

402/172, 400/750

C08L 69/00 (2006.01) C08G 64/08 (2006.01) C08G 64/12 (2006.01) C08G 64/14 (2006.01)

Patent

CA 1064191

Abstract of the Disclosure The invention relates to a process for the preparation of branched, thermoplastic, high-molecular weight and soluble polycarbonates having improved properties, by incorporation of 3,3-bis-(4-hydroxyaryl)-oxindoles as a branching agent. The invention further relates to the polycarbonates obtained in accordance with this process. The use of these specific branch- ing agents imparts a pronounced structural viscosity behavior to the resulting branched polycarbonate yielding a grade of polycarbonate that is equally suitable to processing by extru- sion and by injection molding techniques.

242504

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