Water-in-oil polymer emulsions

US5292800A · kind A · utility

Assignee

• BASF SE

Inventors

• Dietmar Moench · Weinheim, DE
• Heinrich Hartmann · Schifferstadt, DE
• Hans-Ulrich Wekel · Ellerstadt, DE

Key dates

• Filing date: Aug 13, 1992
• Grant date: Mar 8, 1994
• Expiry date: Aug 13, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K8/36
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Water-in-oil emulsions of water-soluble or water-swellable polymers, in which the oil phase of the emulsion consists of not less than 50% by weight of an oil of vegetable or animal origin, contain, as water-in-oil emulsifiers, compounds which are obtainable by PA1 (A) reacting a C.sub.10 -C.sub.22 -fatty alcohol with epichlorohydrin in a molar ratio of from 1:0.5 to 1:1.5 to give a glycidyl ether, PA1 (B) reacting the glycidyl ether with (1) a saturated C.sub.2 -C.sub.6 -alcohol containing from 2 to 6 OH groups or (2) the monoether thereof with a C.sub.10 -C.sub.22 -fatty alcohol, in a molar ratio of glycidyl ether to (1) or (2) of from 1:0.5 to 1:6, in the presence of an acid or base and PA1 (C) alkoxylating the reaction product from (B) with one or more C.sub.2 -C.sub.4 -alkylene oxides in a molar ratio of from 1:1 to 1:6, if necessary, from 5 to 95% by weight of the stated water-in-oil emulsifier being replaced with other water-in-oil emulsifiers.