Defoamer composition and method of using the same

Compositions – Preservative agents – Anti-corrosion

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162 29, 162 60, 252358, B01D 1904, D21H 2112

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active

056457626

ABSTRACT:
A defoamer composition made from the reaction product of an epoxide containing composition selected from epoxide fatty acids, epoxide vegetable oils and mixtures thereof and at least one secondary compound selected from the group consisting of fatty acids and alkoxylated derivatives thereof, alkoxylated polyols, alcohols, alkoxylated alcohols, alkylphenols, alkoxylated alkylphenols, alkylamides, alkoxylated alkylamides, acetylenic glycols, alkoxylated acetylenic glycols, polybasic acids, alkylene oxides, organo silicones and polymers thereof, and methods of using the same especially for defoaming black liquor produced in the pulp and paper industry.

REFERENCES:
patent: 3639240 (1972-02-01), Mutchler
patent: 3671458 (1972-06-01), Sherman et al.
patent: 4332696 (1982-06-01), Slovinsky et al.
patent: 4719084 (1988-01-01), Schmid et al.
patent: 4844744 (1989-07-01), Leiter et al.
patent: 5403440 (1995-04-01), Daute et al.
patent: 5442082 (1995-08-01), Uphues et al.
Hawley's Condensed Chemical Dictionary, (Van Nostrand Reinhold Co., Inc. NY., NY., 1987) p. 31.
Kirk-Othmer Ency. of Chem. Tech., vol. 7, (John Wiley & Sons, Inc., NY, NY, 1979) pp. 430-448.

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