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Abstract

Thickeners corresponding to the general formula (I): R.sup.1O(CH.sub.2CH.sub.2O).sub.n1CONH--X--NHCOO(CH.sub.2CH.sub.2O).sub.mC-ONH--Y--NHOC(OCH.sub.2CH.sub.2).sub.n2OR.sup.2 (I) wherein R.sup.1 and R.sup.2 each independently represents an alkyl group having from 6 to 22 carbon atoms and up to 3 carbon-carbon double bonds; n1 and n2 each independently represent numbers, the combined value of which is from 0 to 100; m represents a number having a value of from 4 to 500; and X and Y each independently represents an alkylene group corresponding to the general formula (II): --[(CH.sub.2).sub.z1--CR.sup.3R.sup.4].sub.a1--[Ph].sub.x--[CR.sup.5R.sup.-6--(CH.sub.2).sub.z2].sub.a2-- (II) wherein R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each independently represents a hydrogen or an alkyl group having from 1 to 4 carbon atoms, Ph represents a phenyl group or an alkyl-substituted phenyl group, and x, a1, a2, z1, and z2 each independently represents a number having a value of 0 or 1; are described along with processes for producing the same and methods of using the same.

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