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:
Sep. 19, 2006
Filed:
Feb. 24, 2003
Applicants:
Gabriele Lang, Mannheim, DE;
Stephan Hueffer, Ludwigshafen, DE;
Arno Lange, Bad Duerkheim, DE;
Hans Peter Rath, Gruenstadt, DE;
Inventors:
Gabriele Lang, Mannheim, DE;
Stephan Hueffer, Ludwigshafen, DE;
Arno Lange, Bad Duerkheim, DE;
Hans Peter Rath, Gruenstadt, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 22/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
α-Chloroisopropyl-substituted aromatics are obtained in high yield by treating isopropenyl-substituted aromatics with hydrogen chloride gas in the absence of a solvent. The α-chloroisopropyl-substituted aromatics serve as initiators for the cationic polymerization of isobutene.