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

1980-11-03

1982-04-06

Briggs, Sr., Wilbert J.

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

Synthetic resins

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

525469, 528499, C08L 6900, C08G 6362

Patent

active

043236634

ABSTRACT:
A process for producing a halogen-containing polycarbonate resin characterized by washing, with an aqueous washing liquid, an organic solvent solution of a mixture of a halogen-containing polycarbonate resin having a halogen content of not less than 4 wt % (hereinafter referred to simply as polycarbonate H) and a polycarbonate resin having a halogen content of not larger than 4 wt % (hereinafter referred to simply as polycarbonate P) the weight ratio of polycarbonate P to polycarbonate H being 0.05-4, and collecting a mixed polycarbonate resin having a halogen content of not less than 4 wt % from said solution.

REFERENCES:
patent: 3038874 (1962-06-01), Laakso et al.
patent: 3334154 (1967-08-01), Kim
patent: 3890266 (1975-06-01), Serini et al.

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