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:
Feb. 01, 1983
Filed:
Aug. 17, 1981
Applicant:
Inventor:
Larry G Bourland, Downington, PA (US);
Assignee:
Atlantic Richfield Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
525207 ; 525192 ;
Abstract
A flame retardant blend of thermoplastic polymers comprises a blend of 1-99 percent by weight of a chlorinated polyvinyl chloride resin and 1-99 percent by weight of a copolymer of styrene and an ethylenically unsaturated dicarboxylic acid monomer, the blend having a heat distortion temperature in excess of 200.degree. F., and a single glass transition property. Such blends which contain at least 40 percent by weight of said chlorinated polyvinyl chloride resin and an oxygen index of at least 0.25 also exhibit flame retardant properties.