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:
Jun. 22, 1982
Filed:
Nov. 03, 1980
Applicant:
Inventors:
Franz Feichtmayr, Ludwigshafen, DE;
Herbert Naarmann, Wattenheim, DE;
Joachim Paust, Neuhofen, DE;
Klaus Penzien, Frankenthal, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C11C / ;
U.S. Cl.
CPC ...
2604 / ; 525326 ; 525340 ; 525344 ; 525353 ; 525355 ; 5253594 ; 525360 ; 525367 ; 525377 ; 560205 ; 568329 ; 568343 ; 568346 ; 568347 ; 585351 ; 549547 ;
Abstract
A process for the preparation of an electrically conductive polyene, wherein a polyene which contains one or more chain members of the formula where R is hydrogen or methyl, and which contains a total of not less than seven aliphatic double bonds, is treated, in the absence of moisture and of oxygen, with a strong Lewis acid having a pk.sub.a of from -10 to +4, or with an alkali metal.