Thermoplastic polyester molding compositions containing quaterna

Details Thermoplastic polyester molding compositions containing quaterna Thermoplastic polyester molding compositions containing quaterna

1991-05-28

1994-01-25

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 99, 524240, 524600, C08K 517

Patent

active

052816435

ABSTRACT:
A process for increasing the crystallization rate and crystallization temperature of thermoplastic polyesters by incorporating into the polyesters quaternary ammonium salts in amounts effective to increase the crystallization temperatures of the polyesters at least 15.degree. C., which quaternary ammonium salts are substantially free of metal salts of organic acid functional groups. Molding compositions of thermoplastic polyesters and quaternary ammonium salts present in amounts effective to increase the crystallization temperatures of the polyesters at least 15.degree. C.

REFERENCES:
patent: 3325454 (1967-06-01), Nakamura et al.
patent: 3575931 (1971-04-01), Sherman
patent: 3819496 (1974-06-01), Roskott
patent: 4035341 (1977-07-01), Vaginay
patent: 4698391 (1987-10-01), Yacobucci et al.

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