Poly(alkylene terephthalate) compositions having improved crysta

Details Poly(alkylene terephthalate) compositions having improved crysta Poly(alkylene terephthalate) compositions having improved crysta

1987-08-10

1989-02-21

Short, Patricia

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525440, C08L 6702, C08L 7700

Patent

active

048065897

ABSTRACT:
Disclosed are homogeneous blends comprising (a) a poly(alkylene terephthalate) and (b) a sufficient amount of a crystalline polyamide to impart enhanced crystallization velocity to said polyalkylene terephthalate. The crystalline polyamide comprises a narrow class of aromatic-aliphatic polyamides prepared from 4,4'-methylenebis(phenyl isocyanate) and a small group of aliphatic dicarboxylic acids.
the poly(alkylene terephthalates) are characterized by enhanced crystallization rates which lead to a number of improved properties over the base polyester.

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patent: 4547547 (1985-10-01), Chen
D. Garcia, Heterogeneous Nucleation of Polyethylene Terephthalate, Polymer Preprints, American Chemical Soc. 25(1) 197 (1984).

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