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:
Mar. 29, 2005
Filed:
Dec. 14, 2001
Matthias Kroner, Eisenberg, DE;
Jürgen Pfister, Speyer, DE;
Dieter Faul, Niederkirchen, DE;
Hans-jürgen Raubenheimer, Ketsch, DE;
Karl-heinz Büchner, Altlussheim, DE;
Matthias Kroner, Eisenberg, DE;
Jürgen Pfister, Speyer, DE;
Dieter Faul, Niederkirchen, DE;
Hans-Jürgen Raubenheimer, Ketsch, DE;
Karl-Heinz Büchner, Altlussheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Alkylpolyalkylene glycol esters of monoethylenically unsaturated carboxylic acids are prepared by esterifying (a) monoethylenically unsaturated carboxylic acids with (b) polyalkylene glycols which are endcapped at one end, in the absence of a solvent and in the presence of polymerization inhibitors and esterification catalysts at not more than 160° C. by a process in which the esterification is first carried out under atmospheric pressure or at up to 50 bar, the water formed in the esterification is then distilled from the reaction mixture at from 10 to 500 mbar and the esterification is then continued under atmospheric pressure or at up to 50 bar.