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:
Sep. 11, 1990
Filed:
Jun. 07, 1989
Applicant:
Inventors:
Abdul L Ayub, Clearwater, CA;
Herbert F Schwarz, Sarnia, CA;
Assignee:
Polysar Limited, Sarnia, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08K / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
523209 ; 524521 ; 524833 ; 524762 ;
Abstract
The present invention provides a silica filled composition which contains vinyl chloride polymer and a nitrile rubber. The silica is characterized by being coated with a polymer which is prepared by the free radical emulsion polymerization of acrylate monomer. The compositions of the present invention have a good balance of physical properties and outstanding resistance to crack growth and hence are suitable for the manufacture of mechanical goods.