Polyoxypropylene polyamine derivatives as defoamers

Details Polyoxypropylene polyamine derivatives as defoamers Polyoxypropylene polyamine derivatives as defoamers

1976-08-30

1978-02-21

Willis, Jr., P.E.

Compositions

Fluent dielectric

N-containing

252 89R, 252135, 252321, 252358, 252525, 252529, 252535, 252539, 252540, 252544, 252554, 252558, 252559, C11D 110, C11D 148, C11D 330

Patent

active

040751309

ABSTRACT:
Novel defoamer and foam inhibitor compositions comprising the reaction product obtained by alkoxylating a polyoxypropylene polyamine having a molecular weight of 190-3000 and selected from the group consisting of a polyoxypropylene diamine of the formula ##STR1## wherein x is an integer of from about 1 to about 40, and a polyoxypropylene triamine of the formula ##STR2## where x, y and z represent integers in the range of about 1 to 15, and the sum of x, y and z is from 3 to about 50, said alkoxylation being carried out with ethylene oxide and a higher alkylene oxide of three carbons or more in a manner such that said defoamer composition has a cloud point of 10-60.degree. C. Said defoamer compositions are particularly useful as a minor portion of a dishwater detergent, and can be used in defoaming and inhibiting foam formation and in diverse types of normally foamable systems, particularly aqueous systems.

REFERENCES:
patent: 2766288 (1956-10-01), Erickson
patent: 2979528 (1961-04-01), Lundsted
patent: 3165477 (1965-01-01), Crowe et al.
patent: 3496138 (1970-02-01), Sellers et al.
patent: 3531527 (1970-09-01), Li et al.
patent: 3654370 (1972-04-01), Yeakey
patent: 3660319 (1972-05-01), Yeakey
patent: 3696057 (1972-10-01), Schussler et al.

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