Aqueous polyisocyanate emulsions useful as binders in the production of molded articles

US4472230A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hanns I. Sachs · Cologne, DE
• Peter Kasperek · Much, DE
• Robert Bouke Peters · Allentown, US

Key dates

• Filing date: Jan 3, 1983
• Grant date: Sep 18, 1984
• Expiry date: Jan 3, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2125/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Aqueous polyisocyanate emulsions are made by emulsifying 5 to 70 parts by weight (on a basis of 100 parts) of a polyisocyanate which has not been modified to render it hydrophilic and emulsifiable with 30 to 95 parts by weight (on a basis of 100 parts) aqueous paraffin dispersion containing 3 to 65 wt. % paraffin, and optionally known additives in the presence of water. The water is used in a quantity such that the emulsion has a solids content of from 6 to 90 wt. %. These emulsions are particularly useful as binders in the production of molded articles.