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:
Jul. 10, 1990
Filed:
Aug. 08, 1988
Rolf Fischer, Heidelberg, DE;
Hans-Juergen Gosch, Bad Durkheim, DE;
Wolfgang Harder, Weinheim, DE;
Klaus-Dieter Malsch, Schifferstadt, DE;
Manfred Eggersdorfer, Frankenthal, DE;
Lothar Franz, Ludwigshafen, DE;
Horst Zimmermann, Heidelberg, DE;
Karl Brenner, Ludwigshafen, DE;
Klaus Halbritter, Mannheim, DE;
Wolfgang Sauer, Everberg, BE;
Hans-Juergen Scheiper, Mutterstadt, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Process for the preparation of 1,4-butanediol or tetrahydrofuran or both by the catalytic hydrogenation of maleic anhydride, succinic anhydride, maleic acid, succinic acid, fumaric acid, or the alkyl esters of these acids at temperatures of from 100.degree. C. to 350.degree. C. and pressures of from 50 bar to 350 bar over a catalyst containing cobalt as the active metal and one or both of the elements copper and phosphorus, if necessary in the presence of an aliphatic alcohol.