Stabilized triple defoamer composition

Details Stabilized triple defoamer composition Stabilized triple defoamer composition

1997-10-31

1999-01-12

Lieberman, Paul

Compositions

Preservative agents

Anti-corrosion

252358, 510421, 510506, 510511, B01D 1904

Patent

active

058582797

ABSTRACT:
A defoaming composition comprising about 1 to about 90% by weight of a mixture of at least three defoaming agents, (a), (b), and (c) and about 99 to about 10% by weight of at least two stabilizers (d) and (e) therefor, and optionally a carrier therefor, where defoamer (a) is selected from a hydrophilic, fumed, particulate silica; defoamer (b) is an ethylene oxide-propylene oxide block copolymer; and defoamer (c) is a linear alcohol alkoxylate mixture of poly(oxyethylene/polyoxypropylene) mono- C.sub.6, C.sub.8, and C.sub.10 alkyl ethers; stabilizer (d) is an ethoxylated C.sub.12-18 fatty alcohol having a molecular weight of about 820; and stabilizer (e) is a cross-linked (meth)acrylic acid polymer.

REFERENCES:
patent: 5045232 (1991-09-01), Dahanayake
patent: 5283004 (1994-02-01), Miura
patent: 5695575 (1997-12-01), Angevaare et al.
Degussa Technical Library, GP-17, Degussa Synthetic Amorphous Silicas for Foam Control Agents, 1994.

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