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Abstract

A low-foaming surfactant composition comprising: (a) a hydroxy mixed ether corresponding to formula I: R.sup.1O[CH.sub.2CH(CH.sub.3)O].sub.x(CH.sub.2CHR.sup.2O).sub.y[CH.sub.2C-H(OH)R.sup.3].sub.z (I) wherein R.sup.1 is an alkyl and/or alkylene group containing from 4 to 18 carbon atoms, R.sup.2 is hydrogen, R.sup.3 is an alkyl group having from 2 to 22 carbon atoms, x is 0, y is a number from 1 to 30, and z is a number from 1 to 3; and (b) a low-foaming nonionic surfactant selected from the group consisting of an optionally end-capped fatty alcohol polyethylene glycol/polypropylene glycol ether corresponding to formula II: R.sup.4O(CH.sub.2CH.sub.2O).sub.n[CH.sub.2(CH.sub.3)CHO].sub.mR.sup.5 (II) wherein R.sup.4 is an alkyl and/or alkylene group containing from 8 to 22 carbon atoms, R.sup.5 is hydrogen or an alkyl group containing from 1 to 8 carbon atoms, n is a number from 1 to 15 and m is a number up to 10, an optionally end-capped fatty alcohol polypropylene glycol/polyethylene glycol ether corresponding to formula II: R.sup.6O[CH.sub.2(CH.sub.3)CHO].sub.p(CH.sub.2CH.sub.2O).sub.qR.sup.7 (III) wherein R.sup.6 is an alkyl and/or alkylene group having from 8 to 22 carbon atoms, R.sup.7 is hydrogen or an alkyl group having from 1 to 8 carbon atoms, p is a number from 1 to 5, and q is a number up to 15, and mixtures thereof.

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First Claim