Process for the manufacture of reinforced polyurethane foams

US4243755A · kind A · utility

Assignee

• BASF SE

Inventors

• Matthias Marx · Fürstenfeldbruck, DE
• Dietmar Nissen · Heidelberg, DE
• Wolfgang Jarre · Ludwigshafen, DE

Key dates

• Filing date: Nov 13, 1979
• Grant date: Jan 6, 1981
• Expiry date: Nov 13, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/04
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a process for the manufacture of reinforced polyurethane foams based on the reaction of organic polyisocyanates and polyols in the presence of filler dispersions. These dispersions are prepared by in situ crushing of the filler in the polyisocyanate or polyol to a particle size of less than 7 microns.