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. 19, 1992
Filed:
Aug. 20, 1990
Applicant:
Inventors:
Rainer Kupfer, Kastl, DE;
Martin Hille, Liederbach, DE;
Roland Bohm, Kelkheim/Taunus, DE;
Friedrich Staiss, Wiesbaden, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
252337 ; 252342 ; 252358 ; 560 85 ; 560 86 ; 560127 ; 560194 ;
Abstract
The novel glycidyl ether addition products are obtained by esterification of a diol compound, selected from the group comprising linear oxyalkylates and other amine-free aliphatic diols, and an addition compound of polyether block polymers and glycidyl ethers with dicarboxylic acids. They are advantageously employed for demulsifying crude oil emulsions.