Emulsifiers and a process for the production of large particle size, homodisperse polymer dispersions using these emulsifiers

US5071946A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Adolf Schmidt · Adelsheim, DE
• Herbert Eichenauer · Dormagen, DE
• Karl-Heinz Ott
• Alfred Pischtschan · Gundelsheim, DE

Key dates

• Filing date: Apr 16, 1990
• Grant date: Dec 10, 1991
• Expiry date: Apr 16, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2/26
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Reaction products of 1 mol of a cycloaliphatic diol corresponding to formula I EQU HO--R--OH I with 2 mols cycloaliphatic carboxylic anhydrides corresponding to formulae II and/or III ##STR1## in which R is a cycloaliphatic hydrocarbon radical having 6 to 20 carbon atoms onto which the hydroxy groups are bonded directly or via methylene groups and PA1 X represents ##STR2## chemical bond obtainable by fusion of the cycloaliphatic diol and the cycloaliphatic carboxylic anhydride in an inert gas atmosphere at temperatures of from 100.degree. C. to 250.degree. C., and the alkali and ammonium salts of these reaction products, and their use as emulsifiers.