Cationic electrolyte-stable dispersions and process for producing polyurethanes useful therein

US4238378A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Peter H. Markusch · McMurray, US
• Klaus Noll · Cologne, DE
• Dieter Dieterich

Key dates

• Filing date: Nov 8, 1977
• Grant date: Dec 9, 1980
• Expiry date: Nov 8, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/7818
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The instant invention is directed to novel polyurethane cationic electrolyte-stable dispersions characterized by lateral or terminal polyalkylene oxide polyether chains containing from 2 to 10%, by weight, of ethylene oxide units, based on the total weight of the polyurethane; a content of ##STR1## groups of from 16 to 100 milliequivalents per 100 g of polyurethane; an average particle size of from 50 to 300 m.mu.; and a solids content of from 10 to 45%.