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:
Mar. 31, 1981
Filed:
Sep. 26, 1979
Applicant:
Inventor:
Donald M Simons, Wilmington, DE (US);
Assignee:
E. I. Du Pont De Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
260 4246 ; 260D / ;
Abstract
Polypropylene compositions having high ignition resistance, flex modulus, and impact resistance are obtained by blending polypropylene homopolymer, a propylene/ethylene copolymer, an EPM or EPDM elastomer having an ethylene content of about 50-65 weight percent and a Mooney viscosity of 35-80, mica, a commercial chlorinated fire retardant, and antimony trioxide in defined proportions. These compositions are particularly suitable for electrical wire insulation and other applications where toughness, stiffness, and ignition resistance are important.