Reactive polymers and isocyanate-reactive polymers obtainable therefrom

US6433124B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Bernd Bruchmann · Ludwigshafen, DE
• Hans Renz · Meckenheim, DE
• Heinz-Dieter Lutter · Diepholz, DE

Key dates

• Filing date: Apr 28, 2000
• Grant date: Aug 13, 2002
• Expiry date: Apr 28, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/6677
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

In a compound of the formula I (reactive polymer), L is a, polymer, XY is a reactive radical which is inert toward NCO groups and splits off one or more protective groups Y under acidic, neutral or basic conditions and the radical X bears, after Y has been split off, at least two groups which are reactive toward isocyanates. Also provided are processes for preparing such a polymer and for preparing V a polymer polyol which is obtainable by reacting a polymer of the formula I with an acid or base. A polymer polyol as is obtainable by treatment of a reactive polymer according to the present invention in the neutral, acidic or basic range can be used to produce a polyaddition product or polycondensation product.