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:
Sep. 15, 2015
Filed:
Sep. 30, 2013
Applicant:
Oxea Gmbh, Oberhausen, DE;
Inventors:
Matthias Eisenacher, Wesel, DE;
Kurt Schalapski, Oberhausen, DE;
Peter Heymanns, Essen, DE;
Rainer Lukas, Essen, DE;
Heinz Strutz, Moers, DE;
Assignee:
OXEA GMBH, Oberhausen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 29/141 (2006.01); B01J 23/889 (2006.01);
U.S. Cl.
CPC ...
C07C 29/141 (2013.01); B01J 23/8892 (2013.01);
Abstract
A continuous method for preparing neopentyl glycol by addition of isobutyraldehyde and formaldehyde in the presence of a tertiary alkylamine as catalyst to give hydroxypivaldehyde with subsequent hydrogenation in the gas phase at a temperature of 125 to 180° C., is characterized in that the hydrogenation is carried out in the presence of a copper chromite catalyst comprising the activators barium and manganese and at a superatmospheric pressure of 30 to 120 kPa.