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:
Jun. 14, 1977
Filed:
Nov. 03, 1976
Applicant:
Inventors:
Philip Stuart Bollen, Auburn, PA (US);
Eugene Vincent Walacavage, Minersville, PA (US);
Assignee:
Allied Chemical Corporation, Morris Township, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08K / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260860 ; 264171 ; 2641 / ; 264216 ;
Abstract
A polyester sheet containing an antiblock agent is produced by uniformly blending a small amount of a degraded polycarbonate containing the antiblock agent. The antiblock agent must have an inherent or adjusted pH of less than six to degrade the polycarbonate to lower its molecular weight upon extrusion compounding. This in turn makes a uniform blend and resulting clear sheet with antiblocking properties. In another embodiment, larger amounts of polycarbonate containing the antiblock agent are used.