Branched polyesters with sulfonate groups

US8846599B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Monika Haberecht · Ludwigshafen, DE
• Frank Rittig · Worms, DE
• Bernd Bruchmann · Ludwigshafen, DE
• Claudia Esper · Ludwigshafen, DE
• Roland Ettl · Haßloch, DE
• Karl Kolter · Ludwigshafen am Rhein, DE

Key dates

• Filing date: Jun 13, 2012
• Grant date: Sep 30, 2014
• Expiry date: Jun 13, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/918
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Branched polyesters with sulfonate groups obtainable by the reaction of the components A, B, optionally C and optionally D to give branched polyesters, where the component A is selected from the group of α,β-olefinically unsaturated dicarboxylic acids, and the component B is selected from the group of tri- or higher-functional alcohols, the optional component C is selected from the group of difunctional alcohols or of difunctional carboxylic acids without α,β-olefinically unsaturated bonds, the optional component D is selected from fatty acids or fatty alcohols, and the subsequent reaction of the resulting branched polyesters with hydrogen sulfite, where the molar amount of hydrogen sulfite is at most 95 mol %, based on the amount of α,β-olefinically unsaturated dicarboxylic acid.