Aqueous solutions or dispersions of polyisocyanate polyaddition products, a process for their production and their use as, or in the production of, adhesives

US4623416A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wolfgang Henning · Zorneding, DE
• Rudolf Hombach · Leverkusen, DE
• Walter Meckel · Neuss, DE
• Helmut Reiff

Key dates

• Filing date: Nov 26, 1984
• Grant date: Nov 18, 1986
• Expiry date: Nov 26, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31587
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to aqueous solutions or dispersions of polyisocyanate polyaddition products containing from about 2 to 200 milliequivalents per 100 g of solids of chemically incorporated, ternary or quaternary ammonium groups and up to about 25%, based on solids, of incorporated ethylene oxide units present within terminally and/or laterally arranged polyether chains, characterized in that the polyisocyanate polyaddition products contain from about 20 to 95% by weight of polyester segments Q incorporated through urethane groups, wherein PA1 Q represents a radical of the type obtained by removing the hydroxyl groups from PA1 (i) dicarboxylic acid polyester polyols having a molecular weight in the range from about 700 to 1400 and/or PA1 (ii) hydroxyl-terminated lactone homopolymers or copolymers having a molecular weight in the range from about 700 to 2500. The present invention also relates to the preparation of these polyisocyanate polyaddition products and their use for bonding substrates, in particular rubber.