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:
Nov. 20, 1984
Filed:
Feb. 03, 1982
John Christiansen, Edison, NJ (US);
Shau-Zou Lu, Whitehouse Station, NJ (US);
Celanese Corporation, New York, NY (US);
Abstract
Polyethylene terephthalate resin compositions are provided containing fillers; reinforcing agents; or blends of such fillers and agents; alkali metal silicates, carbonates, or bicarbonates; and neopentylglycol dibenzoate. Articles molded from these compositions have high gloss surfaces and heat deflection temperatures when molded at temperatures below 110.degree. C. even without a precompounding drying stage. Surprisingly, the inclusion of neopentylglycol dibenzoate allows the concentration of alkali metal silicate, carbonate, or bicarbonate to be substantially reduced while retaining the high gloss surfaces seen when alkali metal silicates, carbonates, or bicarbonates are used alone at much higher concentrations.