Fast crystallizing block copolyester composition

Details Fast crystallizing block copolyester composition Fast crystallizing block copolyester composition

1980-09-08

1982-03-30

Lieberman, Paul

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

Synthetic resins

Processes of preparing a desired or intentional composition...

525176, 525408, 523523, C08K 340, C08L 6702

Patent

active

043223354

ABSTRACT:
A fast crystallizing polyester composition comprising a block copolyester containing the repeating polymeric segments A and B wherein A is a polymeric segment of ethylene terephthalate units and B is a polymeric segment having a glass-transition temperature of less than 0.degree. C. and preferably less than -20.degree. C., the concentration of the segments of B being between 0.05 and 10 mole % of the block copolyester, and a crystallization nucleant which is an at least partially neutralized salt, preferably an alkali metal salt, of a polymer containing pendant neutralizable groups.

REFERENCES:
patent: 3435093 (1969-03-01), Cope
patent: 3639527 (1972-02-01), Brinkman et al.
patent: 4116925 (1978-09-01), Brachman et al.
patent: 4130603 (1978-12-01), Tanaka et al.
Chemical Abstracts, vol. 80, No. 4, Jan. 1974, p. 70, No. 16127j.

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