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:
Sep. 20, 2005
Filed:
Aug. 29, 2001
Wolfgang Breuer, Korschenbroich, DE;
Paul Birnbrich, Solingen, DE;
Claus-peter Herold, Mettmann, DE;
Stephan Von Tapavicza, Erkrath, DE;
Didier Groffe, Manosque, FR;
Matthias Hof, Duisburg, DE;
Wolfgang Breuer, Korschenbroich, DE;
Paul Birnbrich, Solingen, DE;
Claus-Peter Herold, Mettmann, DE;
Stephan Von Tapavicza, Erkrath, DE;
Didier Groffe, Manosque, FR;
Matthias Hof, Duisburg, DE;
Cognis Deutschland GmbH & Co. KG, Duesseldorf, DE;
Abstract
Processes for producing polyester amides, by reacting a polyisobutylene with a first reagent selected from the group consisting of at least monounsaturated acids having from 3 to 21 carbon atoms and derivatives thereof; and a second reagent selected from the group consisting of monoethanolamine and alkylamines of the general formula R—NH, wherein R represents an alkyl group having from 1 to 4 carbon atoms; are described. The polyester amides thus produced and their uses in stabilizing asphaltenes in crude oil and crude oil derivatives are also described.