Isocyanate/polyol casting resin

US5648421A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Lothar Thiele · Langenfeld, DE
• Hans-Peter Kohlstadt · Velbert, DE
• Nicole Schlingloff · Dressendorf, DE
• Claudia Plutniok · Düsseldorf, DE

Key dates

• Filing date: Dec 14, 1995
• Grant date: Jul 15, 1997
• Expiry date: Dec 14, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249969
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A composition useful as a casting resin is provided. The composition comprises a polyol, a polyisocyanate, a catalyst, and a suspension aid, and said catalyst and said suspension aid are present in the casting resin in such concentrations that, within 10 minutes of mixing, it flows downwards a) by at least 15 cm at 25.degree. C. and b) by 3 to 0.3 cm at 130.degree. C. The casting resin is particularly useful as a binder for a granular material in the production of open-cell moldings which are permeable to water.