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:
Jan. 14, 1992
Filed:
Oct. 09, 1990
Applicant:
Inventor:
Willem Sjardijn, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08F / ;
U.S. Cl.
CPC ...
526166 ; 526190 ; 526283 ; 502102 ; 502154 ; 2643286 ;
Abstract
A process is described for the polymerization of dicyclopentadiene using a novel catalyst system comprising (a) a tungsten compound which is the reaction product of a tungsten halide with a phenol which is not substituted with a bulky alkyl group at positions ortho with respect to the hydroxyl group, and (b) a trihydrocarbyl tin hydride.