Polyurethanes and graft mixed polymers based on polyurethane and their use for producing coating materials, adhesives and sealing masses

US6632915B1 · kind B1 · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Stephan Schwarte · Münster, DE
• Egon Wegner · Munster, DE
• Harald Angermüller · Würzburg, DE

Key dates

• Filing date: Mar 20, 2002
• Grant date: Oct 14, 2003
• Expiry date: Mar 20, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/902
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A polyurethane comprising lateral and/or terminal ethenylarylene groups produced by reacting a polyurethane prepolymer containing free isocyanate groups with an adduct obtained by reacting an ethenylarylene monoisocyanate with a polyol, polyamine, and/or a compound containing hydroxyl and amino groups in a molar ratio of 1:1. Also, a graft copolymer comprising a hydrophobic core comprising at least one monomer and a hydrophilic shell comprising the polyurethane, or a hydrophobic core comprising the polyurethane and a hydrophilic shell that comprises at least one monomer. Also, a graft copolymer comprising a hydrophobic core comprising at least one monomer and a hydrophilic shell comprising a polyurethane produced by dispersing at least one hydrophilic olefinic unsaturated polyurethane comprising lateral, and optionally terminal, ethenylarylene groups in an aqueous medium and copolymerizing at least one hydrophobic monomer in the polyurethane in emulsion.