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:
Jan. 04, 1977
Filed:
Jun. 30, 1975
Applicant:
Inventors:
Herwig Hoffmann, Frankenthal, DT;
Guenther Boettger, Bad Duerkheim, DT;
Karl Baer, Weinheim, DT;
Harro Wache, Fussgoenheim, DT;
Heinz Graefje, Ludwigshafen, DT;
Wolfgang Koernig, Dossenheim, DT;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen (Rhine), DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2606 / ; 252439 ; 252473 ;
Abstract
A palladium catalyst for the maufacture of butene-2-diol-1,4 from technical butynediol obtained by reacting acetylene and formaldehyde by the Reppe method in contact with copper catalysts and not specially purified contains (in addition to palladium) both zinc and cadmium, or either zinc or cadmium together with bismuth or tellurium.