Adhesion promoter for adhesive composites composed of plastic and of a polyisocyanate polyaddition product

US9914287B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Christian Renner · Beringen, CH
• Gerlinde Tischer · Ruhland, DE
• Rolf Illguth · Diepholz, DE
• Margit Gehring · Bohmte, DE
• Franz Xaver Redl · Bohmte, DE

Key dates

• Filing date: Dec 10, 2009
• Grant date: Mar 13, 2018
• Expiry date: Dec 10, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249953
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The present invention relates to composite elements comprising (i) plastic, adhering to which there is (ii) a polyisocyanate polyaddition product, where the polyisocyanate polyaddition product is obtained via mixing of (a) isocyanate with (b) compounds having groups reactive toward isocyanates, (c) catalysts and optionally additional products to give a reaction mixture and converting the reaction mixture to a polyisocyanate polyaddition product, where the compounds (b) comprise a polyester polyalcohol as adhesion promoter, capable of production via polycondensation of an acid component and one or more low-molecular-weight diols whose molar mass is less than 500 g/mol, in excess, where the acid component comprises from 83 to 97 mol % of adipic acid and from 3 to 17 mol % of phthalic acid, isophthalic acid, and/or terephthalic acid. The present invention also relates to components in the fitting-out or aircraft, of vehicles, or of buildings, and to insulation comprising this type of composite element.