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:
Aug. 15, 1989
Filed:
Jun. 13, 1988
Applicant:
Inventors:
Assignee:
Polysar Limited, Sarnia, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
528487 ; 528491 ; 528492 ; 528496 ; 528502 ; 264344 ; 366 97 ;
Abstract
The present invention relates to a process to remove residue from partially hydrogenated nitrile rubber. The process is undertaken by mixing and kneading the rubber in the presence of an extractant fluid. The extractant fluid is a solvent for the residue but is not a solvent for the rubber. At the conclusion of the process, the rubber is separated from the residue-containing extractant fluid.