Water-in-oil polymer emulsions
AssigneeBASF SE
InventorsDietmar Moench, Heinrich Hartmann, Hans-Ulrich Wekel
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AssigneeBASF SE
InventorsDietmar Moench, Heinrich Hartmann, Hans-Ulrich Wekel
Estimating the term…
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 (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, (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 (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.
A water-in-oil polymer emulsion which contains a water-soluble or water-swellable polymer finely distributed in a continuous, water-immiscible organic phase, a water-in-oil emulsifier and, optionally, a wetting agent, wherein the continuous organic phase consists of an oil of vegetable or animal origin and contains, as a water-in-oil emulsifier, a compound which is obtainable by
Dependencies are inferred from the claim text.