Decolorization of polycarbonate resins

Details Decolorization of polycarbonate resins Decolorization of polycarbonate resins

1982-02-08

1983-03-22

Anderson, Harold D.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528196, 528200, 528481, 528490, C08G 6362

Patent

active

043776841

ABSTRACT:
Polycarbonate resins which have been polymerized employing titanates as polymerizing agents generally have characteristic undesirable color. Removal of this color is accomplished by treatment of the polycarbonate resin with a quantity of an organic acid anhydride, optionally employing a smaller amount of a mineral acid, in addition for lower temperature decolorization.

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