Redistribution of organic polycarbonate compositions

Details Redistribution of organic polycarbonate compositions Redistribution of organic polycarbonate compositions

1993-12-01

1995-05-09

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525469, 528196, 528491, 528492, 528485, 528486, 528487, 528488, 528490, 528502, C08F28302

Patent

active

054140579

ABSTRACT:
A process for the redistribution of an organic polycarbonate composition. The process involves melt equilibrating a starting polycarbonate composition (which may be a single polycarbonate or a mixture of polycarbonates, and may be or include recycled polycarbonate) having an initial weight average molecular weight in the presence of a carbonate redistribution catalyst and in the absence of branching agents, under conditions such that a redistributed polycarbonate composition is formed having a weight average molecular weight different from, and typically lower than, the initial weight.

REFERENCES:
patent: 5021521 (1991-06-01), Krabbenhoft et al.

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