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:
Oct. 16, 2001
Filed:
Jan. 27, 2000
Applicant:
Inventor:
Tuyu Xie, Kingston, CA;
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 2/34 ; C08F 2/42 ; C08F 4/60 ; C08F 4/70 ; C08F 4/80 ;
U.S. Cl.
CPC ...
C08F 2/34 ; C08F 2/42 ; C08F 4/60 ; C08F 4/70 ; C08F 4/80 ;
Abstract
The polymerization rate of olefins polymerizations using late transition metal catalysts which are coordinated to various ligands may be controlled by the amount of hydrogen present in the polymerization. The effect of hydrogen on polymerization rate is reversible.