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:
May. 13, 1997
Filed:
May. 25, 1995
Applicant:
Inventor:
Akhtar Osman, Sarnia, CA;
Assignee:
Bayer Rubber Inc., Sarnia, CA;
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
525354 ; 5253334 ; 5253335 ; 525371 ;
Abstract
A process is provided for the halomethylation of the aromatic groups in an isoolefin-vinylidene aromatic monomer polymer by the in situ generation of the halomethylating species formed by the reaction of a methoxy alkoxy methane with a thionyl halide, the halomethylation of the polymer being catalyzed by a Lewis acid.