Defoamers for aqueous systems
AssigneeCognis Corporation
InventorsMichael S. Wiggins, Ronald W. Broadbent
Life of this patent
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Abstract
The products of the reaction of epichlorohydrin and compounds having the formula II R3(EO)n(PO)mOH (II) wherein R3 is an alkyl, alkenyl or arenyl group having from 4 to 22 carbon atoms; a substituted alkyl or alkenyl group having from 4 to 22 carbon atoms wherein; n is a number from 0 to 50 and m is a number from 0 to 50; wherein the mole ratio of epichlorohydrin to (II) is from about 0.60/1 to about 2/1 are used in defoaming compositions for defoaming aqueous systems such as latex paints.
Claims12
A composition consisting essentially of (a) a product of the process which consisting essentially of reacting epichlorohydrin and a compound of the formula II
- R3(EO)n(PO)mOH (II)
- wherein R3 is an organic group having from 4 to 22 carbon atoms selected from the group consisting of a linear or branched alkyl group, a linear or branched alkenyl or alkynyl group, a saturated carbocyclic moiety, an unsaturated carbocyclic moiety having one or more multiple bonds, a saturated heterocyclic moiety, an unsaturated heterocyclic moiety having one or more multiple bonds, a substituted linear or branched alkyl group, a substituted linear or branched alkenyl or alkynyl group, a substituted saturated carbocyclic moiety, a substituted unsaturated carbocyclic moiety having one or more multiple bonds, a substituted saturated heterocyclic moiety, a substituted unsaturated heterocyclic moiety having one or more multiple bonds, and a arenyl group;
- wherein EO is an ethylene oxide unit and PO is a propylene oxide unit;
- n is a number from 0 to 50 and m is a number from 0 to 50;
- wherein the mole ratio of epichlorohydrin to (II) is from about 0.60/1 to about 2/1;
- and (b) a water-insoluble liquid carrier capable of dissolving or dispersing component (a).
Dependencies are inferred from the claim text.