Novolak derivatives as defoamers

Details Novolak derivatives as defoamers Novolak derivatives as defoamers

1976-08-30

1977-11-29

Willis, Jr., P.E.

Compositions

Fluent dielectric

N-containing

252 89R, 252135, 252321, 252358, 252539, 252540, 252558, 252559, 260 57R, 260 59R, C11D 172, C11D 176, C11D 320

Patent

active

040605019

ABSTRACT:
Novel defoamer and foam inhibitor compositions comprising the reaction product obtained by alkoxylating a novolak resin having a functionality less than 3, said alkoxylation being carried out with ethylene oxide and a higher alkylene oxide of 3 carbons or more in a manner such that the final defoamer composition has a cloud point of 10.degree.-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: 2454541 (1948-11-01), Bock et al.
patent: 2499370 (1950-03-01), De Groote et al.
patent: 2557081 (1951-06-01), De Groote et al.
patent: 2622069 (1952-12-01), Monson
patent: 2629704 (1953-02-01), De Groote et al.
patent: 2748087 (1956-05-01), Monson
patent: 3215635 (1965-11-01), Liebling et al.
patent: 3382178 (1968-05-01), Lissant et al.

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