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:
Jul. 18, 1995
Filed:
Aug. 09, 1993
Applicant:
Inventors:
Donald A White, Edison, NJ (US);
Lawrence W Flatley, Somerville, NJ (US);
Richard C Yeh, Westfield, NJ (US);
Raymond F Murphy, Baton Rouge, LA (US);
Assignee:
Exxon Chemical Patents Inc., Wilmington, DE (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
5253336 ; 5253333 ; 5253334 ; 5253337 ; 5253338 ; 525376 ; 525387 ; 525388 ; 525938 ; 528481 ; 528501 ; 5285 / ;
Abstract
A process is provided for producing a low molecular weight isoolefin polymer by contacting at conversion conditions a higher molecular weight saturated isoolefin polymer, for example, polyisobutylene or a copolymer of a C.sub.4 to C.sub.7 isoolefin and a para-alkylstyrene, in the melt phase, with an initiator, such as an oxygen-containing gas, an organic peroxide or an azo compound.