Block carbonate-carboxylate copolyesters and method for their pr

Details Block carbonate-carboxylate copolyesters and method for their pr Block carbonate-carboxylate copolyesters and method for their pr

1979-10-23

1986-07-01

Ziegler, Jacob

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

Synthetic resins

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

C08F 2000

Patent

active

045981299

ABSTRACT:
Novel thermoplastic block carbonate-carboxylate copolyesters useful in films and molded articles are prepared by the interesterification of (a) high molecular weight aromatic carbonate polymers and (b) a copolyester of a linear aliphatic dicarboxylic acid and, optionally, an aromatic dibasic acid such as terephthalic or isophthalic acid with one or more straight or branched chain dihydric aliphatic glycols, or with a block copolyester of poly(1,4-butylene terephthalates) and polybutylene oxide or an aromatic/aliphatic polyester, a mixture of poly(1,4-butylene terephthalate) and a polyester of a linear aliphatic dicarboxylic acid and a branched chain dihydric aliphatic glycol or a poly(butylene oxide).

REFERENCES:
patent: 4126592 (1978-11-01), Borman et al.
patent: 4169868 (1979-10-01), Schreckenberg et al.

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