Process for the alkoxylation of amino group containing polymers

US8507613B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Dieter Boeckh · Schifferstadt, DE
• Stefan Frenzel · Weinheim, DE
• Christian Bittner · Bensheim, DE
• Andrea Misske · Speyer, DE
• Ulrich Annen · Nümbrecht, DE
• Wilfried Sager · Mutterstadt, DE
• Sophia Ebert · Mannheim, DE
• Andreas Eichhorn · Munich, DE

Key dates

• Filing date: Nov 17, 2008
• Grant date: Aug 13, 2013
• Expiry date: May 5, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L79/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the alkoxylation of a first polymer comprising at least one monomer unit having NH groups and optionally NH2 groups, wherein the first polymer has a molecular weight Mw of at least 500 g/mol, comprising the steps of (a) reacting the first polymer with alkylene oxide in a reaction mixture comprising a solvent until the average degree of alkoxylation of each NH group and each optional NH2 group, calculated as two NH groups, is from 0.75 to 1.25; (b) adding a second polymer of formula (I), wherein R is a linear or branched alkyl group having from 1 to 20 carbon atoms, each R′ is independently a linear or branched alkyl group having from 1 to 20 carbon atoms or hydrogen, each n is independently from 1 to 5 and m is from 5 to 40, to the reaction mixture of step (a); (c) at least partially removing the solvent from the reaction mixture of step (b); and (d) further reacting the reaction mixture of step (c) with alkylene oxide at a given temperature until the average degree of alkoxylation of each NH group and each optional NH2 group, calculated as two NH groups, of the first polymer is from 2 to 40. The present invention also relates to a pol…