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:
Nov. 24, 1998
Filed:
Jun. 06, 1996
Jean M Frechet, Oakland, CA (US);
Shah A Haque, Houston, TX (US);
Joachim H Steinke, London, GB;
Hsien-Chang Wang, Bellaire, TX (US);
Exxon Chemical Patents Inc, Houston, TX (US);
Cornell Research Foundation Inc., Ithaca, NY (US);
Abstract
There is provided a method of introducing functionality into a copolymer of an isoolefin and an alkylstyrene at the alkylbenzyl carbon atom comprising the steps of: forming a solution of said copolymer in a hydrocarbon solvent; adding to said polymer solution an alkali metal Na, K, Rb, Cs alkoxide and an alkyl lithium compound to form a superbase with the polymer solution; and adding an electrophile to the metalated polymer solution; also provided are the metalated copolymers and the functionalized derivatives therefrom.