Modified polyisocyanates, a process for their production and their use

US5179146A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hanns P. Muller · Leverkusen, DE
• Geza Avar · Leverkusen, DE
• Christian Weber · Elgin, US
• Karl-Heinz Dorner · Pulheim, DE
• Alexander Karbach · Krefeld, DE
• Christian Lindner · Bensheim, DE
• Rolf Dhein · Krefeld, DE

Key dates

• Filing date: Mar 30, 1992
• Grant date: Jan 12, 1993
• Expiry date: Mar 30, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/708
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Modified polyisocyanates having an NCO group content of from 10 to 45% by weight, comprising a a) a polyisocyanate component consisting essentially of an organic polyisocyanate having an NCO group content of from 15 to 50% by weight which is liquid at room temperature, and b) 2 to 100% by weight, based on the weight of component a), of a polymer modifier consisting of at least one graft rubber which is dispersed in swollen form in component a), and a process for the production of the new modified polyisocyanates are described. The modified polyisocyanates are also useful in the production of plastics by the isocyanate polyaddition process.