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:
Jun. 13, 2006
Filed:
May. 14, 2004
Applicants:
Vijai P. Gupta, Berwyn, PA (US);
Edward P. Carey, Atglen, PA (US);
Inventors:
Vijai P. Gupta, Berwyn, PA (US);
Edward P. Carey, Atglen, PA (US);
Assignee:
Lyondell Chemical Technology, L.P., Houston, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F 6/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for purifying grafted polyolefins by extraction is disclosed. The purified grafted polyolefins have improved color and adhesion properties. The extraction is performed with an azeotropic solvent that is strong enough to extract impurities but does not cause sticking of the grafted polyolefin. The azeotropic solvent can be easily recycled.