Aqueous polyurethane compositions

US5541251A · kind A · utility

Assignee

• UCB S.A. · BE

Inventors

• Dirk Bontinck · Ertvelde, BE
• Michel Tielemans · Wemmel, BE
• Jean-Marie Loutz · Brussels, BE
• Andr e Vandersmissen · Brussels, BE
• Luc De Koninck · Brussels, BE

Key dates

• Filing date: Jan 12, 1995
• Grant date: Jul 30, 1996
• Expiry date: Jan 12, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L75/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous selfcrosslinkable resin composition comprising an aqueous dispersion of at least one polyurethane polymer having anionic salt groups as sole chain-pendant functional group and at least one vinyl polymer having chain-pendant acetoacetoxyalkyl ester groups. A selfcrosslinking reaction between the polyurethane polymer and the vinyl polymer will take place during and/or after film formation, resulting in the formation of a polymeric film having properties not found to be those of the non-functional polymer components.