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. 08, 2011
Filed:
Apr. 13, 2004
Applicants:
Hubert Spreitzer, Viernheim, DE;
Heinrich Becker, Eppstein-Niederjosbach, DE;
Elfriede Hufsky, Frankfurt, DE;
Inventors:
Hubert Spreitzer, Viernheim, DE;
Heinrich Becker, Eppstein-Niederjosbach, DE;
Elfriede Hufsky, Frankfurt, DE;
Assignee:
Merck Patent GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 75/00 (2006.01); C08G 61/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process in which addition of certain bis(methyl)aryl compounds which have a further substituent other than hydrogen and on which at least one of the two methyl groups bears a leaving group, the molecular weight in the synthesis of poly(arylenevinylenes) is controlled reproducibly and can be deduced by the GILCH polymerization or by the sulfinyl precursor route, and to the polymers obtainable by means of the process according to the invention.