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. 31, 1983
Filed:
Feb. 24, 1982
Applicant:
Inventors:
Michael R Grancio, South Hamilton, MA (US);
David F Stewart, North Reading, MA (US);
John F Cass, Wakefield, MA (US);
Assignee:
Sweetheart Plastics, Inc., Wilmington, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08L / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
525 96 ; 525 71 ; 525 98 ; 525 99 ; 2642106 ; 264322 ; 26432817 ; 26433113 ;
Abstract
A thermoformable polymer blend composition comprising at least 50% by weight of an olefin polymer such as polyethylene or polypropylene, from 10 to 48% by weight of a styrene polymer and from 2 to 40% by weight of a thermoplastic styrenic block copolymer rubber, preferably a styrene-butadiene-styrene block copolymer, which acts as a compatibilizer for the olefin and styrene polymers in the blend. This blend can be formed on conventional machinery to give products having the beneficial properties of both types of polymers.