Copolymers and process for their preparation

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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264176R, C08L 6700, C08L 6900

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active

045074429

ABSTRACT:
Novel copolymers are prepared by the interaction of a melt mix of a high molecular weight or low molecular weight bisphenol A polycarbonate polymer and a high molecular weight diprimary dialcohol polyester polymer such as polyethylene terephthalate polymer. The resulting copolymers are transparent, relatively tough and are useful as glazing materials or molding compounds and are capable of maintaining dimensional stability at temperatures approaching their glass transition temperature.

REFERENCES:
patent: 3218372 (1965-11-01), Okamura et al.
patent: 3299172 (1967-01-01), Schade et al.
patent: 3413379 (1968-11-01), Schade et al.
patent: 4367317 (1983-01-01), Fox et al.

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