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. 07, 1990
Filed:
Dec. 24, 1987
Applicant:
Inventors:
Cyrus A Irani, Houston, TX (US);
Thomas V Harris, Benicia, CA (US);
Wayne R Pretzer, Wheaton, IL (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166268 ; 166273 ; 166274 ; 252-8554 ;
Abstract
A polymer having pendant vinyl ether groups is disclosed having a minimum solubility parameter of 6.85 (cal/cc).sup.1/2 or less. That minimum solubility parameter is reduced to 6.85 (cal/cc).sup.1/2 or less by control of the number of pendant vinyl ether groups and by the selection of said vinyl ether groups. Preferably, the polymer has a molecular weight of over 1000 and is formed by reacting an olefin monomer (such as decene) with a vinyl(ethyl ether) monomer or by grafting a vinyl ether monomer onto an unsaturated polyolefin (such as polydecene).