Aqueous polysiloxane-polyurethane dispersion, its preparation and use in coating compositions

US6794445B2 · kind B2 · utility

Assignee

• GOLDSCHMIDT HOLDING GMBH · DE

Inventors

• Gerhard Reusmann · Essen, DE
• Markus Hallack · Schermbeck, DE

Key dates

• Filing date: Apr 15, 2003
• Grant date: Sep 21, 2004
• Expiry date: Apr 15, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to aqueous dispersions of polysiloxane-polyurethanes based on selected, substantially difunctional starting materials, to their preparation and use for preparing coating compositions, and to a coating composition comprising as substantial binder component polysiloxane-polyurethanes of the kind mentioned. The coating compositions of the invention are especially suitable for use as soft feel coatings.