Process for the preparation of polyurethane resins using stable dispersions as a starting component

US4260530A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Artur Reischl · Leverkusen, DE
• Hanns P. Muller · Leverkusen, DE
• Kuno Wagner · Leverkusen, DE

Key dates

• Filing date: Jun 7, 1979
• Grant date: Apr 7, 1981
• Expiry date: Jun 7, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L75/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to a process for the preparation of a finely divided, stable and relatively low viscosity dispersion of a polyisocyanate polyaddition product and an aminoplast and/or phenoplast and/or copolymer thereof in a hydroxyl containing compound and the use of such a dispersion as the starting component for the production of a polyurethane resin.