Process for the preparation of polyester/polycarbonate copolymer

Details Process for the preparation of polyester/polycarbonate copolymer Process for the preparation of polyester/polycarbonate copolymer

1986-12-30

1991-10-08

Short, Patricia

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

Synthetic resins

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

524537, 524539, C08G 6364

Patent

active

050555316

ABSTRACT:
Copolymers are prepared by the interaction of a melt mix comprising a high molecular weight poly(alkylene arylate) resin with a high molecular weight polycarbonate or polyester carbonate and a catalyst, such as diphenyl phosphate. The copolymers are tough and are useful as molding compounds and are capable of maintaining dimensional stability at temperatures approaching their singale glass transition temperature. The copolymers are characterized by having substantially no content of polyester homopolymer and a ratio of arylate linkages to dihydric phenol arylate linkages of not substantially less than 20:1.

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: 4358568 (1982-11-01), Fox
patent: 4367317 (1983-01-01), Fox
patent: 4461877 (1984-07-01), Fox
patent: 4507442 (1985-03-01), Fox et al.
Billmeyer F. W. Textbook of Polymer Science John Wiley & Sons, New York p. 231 1971.

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