The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 1984
Filed:
Nov. 08, 1982
Polyplastics Co., Ltd., , JP;
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.