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:
Dec. 02, 2014
Filed:
Jun. 13, 2012
Monika Haberecht, Ludwigshafen, DE;
Juergen Detering, Limburgerhof, DE;
Bernd Bruchmann, Freinsheim, DE;
Helmut Witteler, Wachenheim, DE;
Heike Weber, Mannheim, DE;
Karl Kolter, Limburgerhof, DE;
Monika Haberecht, Ludwigshafen, DE;
Juergen Detering, Limburgerhof, DE;
Bernd Bruchmann, Freinsheim, DE;
Helmut Witteler, Wachenheim, DE;
Heike Weber, Mannheim, DE;
Karl Kolter, Limburgerhof, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Branched polyesters with sulfonate groups can be obtained by reacting components A, B, optionally C, and optionally D to yield branched polyesters, then reacting these branched polyesters with hydrogen sulfite. Component A is at least one α,β-olefinically unsaturated dicarboxylic acid, component B is at least one di- or higher-functional alcohol, optional component C is at least one di- or higher-functional carboxylic acid or hydroxycarboxylic acid without an α,β-olefinically unsaturated bond, and optional component D is at least one compound of formula CH(—O—CH—CH)—OH. In reacting the branched polyesters with hydrogen sulfite, a molar amount of hydrogen sulfite is at most 95 mol %, based on an amount of α,β-olefinically unsaturated dicarboxylic acid.