Water-in-oil emulsion defoamer compositions, their preparation a

Details Water-in-oil emulsion defoamer compositions, their preparation a Water-in-oil emulsion defoamer compositions, their preparation a

1978-11-06

1980-09-30

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

162168N, 162168R, 252314, 252358, 260 296R, B01D 1904

Patent

active

042254566

ABSTRACT:
Water based defoamer compositions which are invert (water in oil) emulsions containing quick-chilled amides, hydrophobic silica, polymers, emulsifiers, oil and water are useful in defoaming aqueous systems such as found in the kraft pulping process. Optionally, these defoamer compositions may contain silicone surfactants, formaldehyde solution and silicone oil.

REFERENCES:
patent: 2715614 (1955-08-01), Snook
patent: 2843551 (1958-07-01), Leonard et al.
patent: 3652453 (1972-03-01), MacDonnell
patent: 3677963 (1972-07-01), Lichtman et al.
patent: 4021365 (1977-05-01), Sinka et al.
patent: 4032473 (1977-06-01), Berg et al.
patent: 4107073 (1978-08-01), Maciaszek

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