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:
Oct. 20, 2009
Filed:
Jan. 09, 2009
Rudolf Erich Lorenz, Ludwigshafen, DE;
Rolf Pinkos, Bad Duerkheim, DE;
Michael Steiniger, Neustadt, DE;
Gerd Schaefer, Monsheim, DE;
Thomas Danner, Erpolzheim, DE;
Rudolf Erich Lorenz, Ludwigshafen, DE;
Rolf Pinkos, Bad Duerkheim, DE;
Michael Steiniger, Neustadt, DE;
Gerd Schaefer, Monsheim, DE;
Thomas Danner, Erpolzheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The present invention relates to a process for purifying 1,4-butynediol, which comprises compressing 1,4-butynediol to from 50 to 1500 bar, depressurizing it, waiting for phase separation to occur after depressurization and separating off the bottom phase, and a process for the hydrogenation of 1,4-butynediol to 1,4-butenediol and 1,4-butanediol using the purified 1,4-butynediol.