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. 28, 1978
Filed:
Jul. 20, 1977
Applicant:
Inventors:
Bernhard Schulz, Schwetzingen, DE;
Hans Grassner, Heidelberg, DE;
Peter Jaeger, Ludwigshafen, DE;
Heinz Nohe, Meckenheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen am Rhein, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ; C07C / ;
U.S. Cl.
CPC ...
204 78 ; 204 72 ; 2606 / ;
Abstract
Symmetrical carotenoids are manufactured from the molecular halves thereof by a process wherein phosphonium salts of the molecular halves of these symmetrical carotenoids are oxidized electrochemically in a solvent and in the presence of a base, causing the molecular halves to dimerize, with elimination of substituted phosphine oxide.