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:
Jul. 07, 1992
Filed:
Jul. 11, 1991
Applicant:
Inventors:
Assignee:
Polyplastics Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524318 ;
Abstract
Polybutylene terephthalate (PBT) injection-molding compositions exhibit improved mold-release properties and sufficient extruder screw 'bite' during injection molding. The PBT compositions are a polyblend of a PBT base resin with an effective amount (preferably between about 0.01 to 10 parts by weight) of a processing aid which is a sorbitan ester of a fatty acid having at least 12 carbon atoms. The PBT injection molding compositions of the invention may be used in a variety of end-use applications (e.g., the automotive and/or electronic industries) to form stable injection-molded thin-walled and/or complex-shaped articles.