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:
May. 21, 1991
Filed:
May. 01, 1989
Applicant:
Inventors:
Charlotte H Chen-Tsai, Murrysville, PA (US);
Isaac C Sanchez, Austin, TX (US);
William L Burton, Harrison Township, Allegheny County, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
428 366 ; 525 66 ; 525 67 ; 525133 ; 525148 ; 525933 ;
Abstract
A polymer blend comprising a polycarbonate, an acrylonitrile-methyl acrylate copolymer and an imide-acrylate copolymer containing acidic or anhydride groups which have been alkylated or esterified. The polymer blend has a low oxygen permeation rate, high strength, and is suitable for use as a packaging material.