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. 08, 2003
Filed:
Aug. 22, 2000
Applicant:
Inventor:
Hannu Nousiainen, Porvoo, FI;
Assignee:
Neste Chemicals Oy, Espoo, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 2/704 ; C07C 2/914 ; C07C 3/118 ;
U.S. Cl.
CPC ...
C07C 2/704 ; C07C 2/914 ; C07C 3/118 ;
Abstract
The invention relates to a process for the preparation of neopentyl glycol by hydrogenation of hydroxypivaldehyde (HPA) in the presence of hydrogen and a hydrogenation catalyst at an elevated temperature. According to the invention, hydroxypivaldehyde is hydrogenated in the presence of a nickel-containing catalyst and at a temperature below 100° C. in a liquid phase containing a solvent an amount of 1-70% by weight and water in an amount of 0-15% by weight. Aliphatic alcohol or ether or a mixture thereof is used as solvent.