Process for the manufacture of a mixture of polycarbonates and s

Details Process for the manufacture of a mixture of polycarbonates and s Process for the manufacture of a mixture of polycarbonates and s

1982-02-18

1983-10-11

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...

525146, 525148, C08L 6900

Patent

active

044093632

ABSTRACT:
The invention relates to a process for the manufacture of a mixture of a polycarbonate and a styrene-containing polymer whereby the polycarbonate present in solution is initially brought into contact with a precipitating agent. The solvent and the precipitating agent are subsequently separated from the precipitated solid material to prepare a polycarbonate having residual moisture of more than 1 and less than 50 percent by weight relative to the polycarbonate, and where the resultant product with a residual moisture is mixed with the styrene-containing polymer at temperatures above the softening range of the components removing volatile components. The claimed mixtures are suitable for the manufacture of molded parts for cars, bottles and appliances.

REFERENCES:
patent: 3988390 (1976-10-01), Prinz et al.
patent: 4239861 (1980-12-01), Braese et al.

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