Composite elements containing polyisocyanate-polyaddition products

US6790537B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Thomas Bartz · Lynden, US
• Georg Knoblauch · Birkenfeld, DE
• Heike Wild · Olching, DE
• Heinz Forster · Wuppertal, DE
• Jurgen Mertes · Gau-Algesheim, DE
• Hans-Juergen Reese · Olching, DE
• Mathäus Rank · Olching, DE
• Karl-Werner Hohl · Fürstenfeldbruck, DE

Key dates

• Filing date: Sep 28, 2001
• Grant date: Sep 14, 2004
• Expiry date: Sep 28, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31605
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Composite elements have the following layer structure:(i) from 2 to 20 mm of metal,(ii) from 10 to 300 mm of polyisocyanate polyaddition products obtainable by reacting (a) isocyanates with (b) compounds which are reactive toward isocyanates in the presence of from 1 to 50% by volume, based on the volume of the polyisocyanate polyaddition products, of at least one gas (c) and also, if desired, (d) catalysts and/or (f) auxiliaries and/or additives,(iii) from 2 to 20 mm of metal.