Thermoplastic polyester composition

Details Thermoplastic polyester composition Thermoplastic polyester composition

1982-11-08

1984-03-13

Phynes, Lucille M.

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

Synthetic resins

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

528289, 5283081, 5283082, C08G 6376

Patent

active

044368771

ABSTRACT:
A thermoplastic polyester composition comprising a thermoplastic polyester resin containing a moiety derived from an aromatic dibasic acid, as a predominant acid moiety and a hydantoin compound in an amount sufficient to substantially retard evolution of aromatic dibasic acid vapor during melt processing of the composition. A method of preventing mold deposits during a molding operation of a thermoplastic polyester resin containing an aromatic dibasic acid as a predominant acid moiety comprising the addition of 0.01 to 10 parts by weight of a hydantoin compound per 100 parts by weight of the polyester resin. The aromatic dibasic acid is preferably terephthalic acid and the thermoplastic polyester resin is preferably selected from the group of polyethylene terephthalate, polytrimethylene terephthalate, polytetramethylene terephthalate and blends thereof.

REFERENCES:
patent: 4309529 (1982-01-01), Wendling
patent: 4316952 (1982-02-01), Wendling
patent: 4350806 (1982-09-01), Wagener
patent: 4362852 (1982-12-01), Pendlebury et al.

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