Aqueous solutions or dispersions of polyisocyanate addition products, a process for their preparation, and their use as coating compounds or as sizing agents for paper

US4670100A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wolfgang Henning · Zorneding, DE
• Walter Meckel · Neuss, DE
• Ulrich Beck · Bornheim, DE
• Heinz Baumgen · Leverkusen, DE
• Joachim Konig

Key dates

• Filing date: Jun 19, 1986
• Grant date: Jun 2, 1987
• Expiry date: Jun 19, 2006

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H17/57
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to aqueous solutions or dispersions of polyisocyanate addition products which contain about 2 to 300 milliequivalents per 100 g of solids of chemically incorporated ternary or quaternary ammonium groups and up to about 25% by weight, based on solids, of chemically incorporated ethylene oxide units, --CH.sub.2 --CH.sub.2 --O--, present within a polyether chain, the ternary or quaternary ammonium groups and the ethylene oxide units being present in an amount sufficient to guarantee the solubility or dispersibility of the polyisocyanate addition products in water, characterized in that the polyisocyanate addition products have segments incorporated in the polymer chain which correspond to the following general formula ##STR1## in an amount of about 0.1 to 20% by weight based on the above formula, but excluding the weight of R. The present invention also relates to a process for the production of polyisocyanate addition products and to their use as coating agents for flexible or inflexible substrates and as sizing agents for paper or for the production sizing agents for paper.