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. 24, 2009
Filed:
Nov. 09, 2006
Applicants:
Bradford B. Wayland, Philadelphia, PA (US);
Zhi LU, Phillipsburg, NJ (US);
Alexei A. Gridnev, Wilmington, DE (US);
Thomas Robert Darling, Wilmington, DE (US);
Inventors:
Bradford B. Wayland, Philadelphia, PA (US);
Zhi Lu, Phillipsburg, NJ (US);
Alexei A. Gridnev, Wilmington, DE (US);
Thomas Robert Darling, Wilmington, DE (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 6/00 (2006.01); C08F 4/80 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods of producing decolorized homo- and co-polymers through polymerization of monomers in presence of cobalt-complexed tetraphenyl porphyrin derivatives and decolorization of the produced polymer by exposing the polymer to a sorbent and, optionally, a solvent are disclosed herein.