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:
Dec. 27, 1994
Filed:
Nov. 10, 1993
Applicant:
Inventors:
Joseph P Kennedy, Akron, OH (US);
Tibor Pernecker, Akron, OH (US);
Assignee:
The University of Akron, Akron, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526 89 ; 5263487 ; 526347 ; 526339 ;
Abstract
A process is disclosed for carbocationically polymerizing monomers having one or more carbon-carbon double bonds in a medium primarily of carbon dioxide at or above 31.1.degree. C. and at or above 73 bars pressure. The supercritical carbon dioxide can replace traditional solvents for carbocationic polymerizations. While traditional solvents like methylene chloride do not function to allow polymers to form above cryogenic temperatures, it has been found that polymers can be formed at higher temperatures in this supercritical medium.