Hydroxy ethers, a process for their production, and methods for

Details Hydroxy ethers, a process for their production, and methods for Hydroxy ethers, a process for their production, and methods for

1988-07-14

1990-05-15

Willis, Prince E.

Compositions

Water-softening or purifying or scale-inhibiting agents

252135, 25217421, 252321, 252358, 252DIG1, 568622, 568616, C11D 172

Patent

active

049255878

ABSTRACT:
Hydroxyalkyl polyethylene glycol and hydroxyalkyl polypropylene glycol ethers of the formula ##STR1## in which R.sup.1 is a linear C.sub.6 -C.sub.16 alkyl radical, R.sup.2 is a linear or branched, C.sub.1 -C.sub.22 alkyl or alkenyl radical, R.sup.3 is hydrogen or a methyl group, and n is a number of from 0 to 30, and to mixtures of several such compounds. Also, a process for the preparation of these hydroxy ethers, wherein epoxides are reacted with alcohol alkoxylates at an elevated temperature in the presence of a catalyst and in an inert gas atmosphere. The compounds or their mixtures are used as foam inhibiting additives in low-foam cleaning preparations.

REFERENCES:
patent: 3491029 (1970-01-01), Kasperl et al.
patent: 3696057 (1972-10-01), Schussler et al.
patent: 4600523 (1986-07-01), Piorr et al.

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