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. 27, 1990
Filed:
Feb. 03, 1989
Applicant:
Inventors:
Herbert Mueller, Frankenthal, DE;
Walter Mesch, Ludwigshafen, DE;
Klaus Broellos, Seeheim-Jugenheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568864 ;
Abstract
1,2,4-Butanetriol is prepared by catalytic hydrogenation of malic esters over a copper-containing catalyst by passing the esters over the fixed-bed catalyst at from 130.degree. to 190.degree. C. under hydrogen partial pressures of from 100 to 300 bar while substantially avoiding the formation of a gas phase.