Process of reacting branched thermoplastic polycarbonate with po

Details Process of reacting branched thermoplastic polycarbonate with po Process of reacting branched thermoplastic polycarbonate with po

1989-12-22

1991-06-04

Anderson, Harold D.

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

Synthetic resins

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

525467, 528204, C08G 6442

Patent

active

050215213

ABSTRACT:
Thermoplastic branched polycarbonate resins are prepared by equilibration of linear aromatic polycarbonate with polyhydric phenol having more than two hydroxy groups in the presence of a catalyst.
In another aspect of the invention, thermoplastic branched polycarbonate resins are prepared by equlibration of branched aromatic polycarbonate with polyhydric phenol having more than two hydroxy groups per molecule, preferably 1,1,1-tris-(4-hydroxyphenyl)ethane, in the presence of a carbonate equilibration catalyst, preferably tetrabutylammonium tetraphenylborate.

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