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. 17, 1988
Filed:
Dec. 04, 1984
Applicant:
Inventors:
Robert Becker, Leverkusen, DE;
Ludwig Bottenbruch, Krefeld, DE;
Johann Grolig, Leverkusen, DE;
Helmut Waldmann, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528397 ;
Abstract
Polycumylene of a relatively high degree of polymerization is obtained in a reasonable space-time yield by Friedel-Crafts alkylation of .alpha.-cumyl halide when catalyst composition, catalyst concentration and dilution ratio are selected within certain limits.