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:
Apr. 01, 2003
Filed:
Mar. 27, 2002
Applicant:
Inventors:
Udo Rheude, Otterstadt, DE;
Maximilian Vicari, Limburgerhof, DE;
Werner Aquila, Mannheim, DE;
Günter Wegner, Römerberg, DE;
Jörg Niekerken, Holzminden, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 6/738 ; C07C 6/736 ; C07C 6/966 ; C07C 6/705 ; C07C 2/710 ;
U.S. Cl.
CPC ...
C07C 6/738 ; C07C 6/736 ; C07C 6/966 ; C07C 6/705 ; C07C 2/710 ;
Abstract
A process is proposed for preparing C acetate for Vitamin A synthesis by hydroformylation of 3,4-diacetoxybut-1-ene (3,4-DABE), according to which a 3,4-DABE is used which is obtained by acetoxylation of 1,3-butadiene with acetic acid and air in the presence of a catalyst and removing by distillation the 3,4-DABE formed in this case as by-product.