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:
Feb. 15, 1994
Filed:
Sep. 17, 1991
Applicant:
Inventors:
Kenneth W Powers, Berkeley Heights, NJ (US);
Hsien C Wang, Edison, NJ (US);
Robert N Webb, Madison, NJ (US);
James V Fusco, Red Bank, NJ (US);
Hans F Vanbrackle, Baker, LA (US);
Michael F McDonald, Jr, Greenwell Springs, LA (US);
Assignee:
Exxon Chemical Patents Inc., Linden, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08C / ; C08F / ;
U.S. Cl.
CPC ...
5253334 ; 525351 ; 525353 ; 525355 ; 525356 ; 525357 ; 525358 ; 5253591 ;
Abstract
A process for halogenating star-branched butyl rubber is provided wherein water and a wetting agent or wetting agent precursor are added to a solution comprising the star-branched butyl rubber, solid particles of branching agent and an organic solvent prior to the neutralization step to increase the rate of neutralization of the hydrogen halide by-product of the halogenation reaction.