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:
May. 22, 2018
Filed:
Oct. 13, 2014
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Rolf Pinkos, Bad Duerkheim, DE;
Olga Osetska, Mannheim, DE;
Irene de Wispelaere, Mannheim, DE;
Stefan Dudenhoeffer, Ludwigshafen, DE;
Christina Walczuch, Ludwigshafen, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 3/34 (2006.01); C07C 29/80 (2006.01); C07C 29/88 (2006.01); B01D 3/14 (2006.01); C07C 29/94 (2006.01);
U.S. Cl.
CPC ...
C07C 29/80 (2013.01); B01D 3/141 (2013.01); B01D 3/34 (2013.01); C07C 29/88 (2013.01); C07C 29/94 (2013.01);
Abstract
Method for preparing 1,4-butanediol having an APHA color index of less than 30 by treating substance mixtures comprising 1,4-butanediol by distillation of the 1,4-butanediol in the presence of complex hydrides.