Particulate defoaming compositions

Details Particulate defoaming compositions Particulate defoaming compositions

1989-04-20

1990-09-11

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

162 5, 162DIG4, 252321, B01D 1904, C09K 300

Patent

active

049561197

ABSTRACT:
The present invention involves new anti-foam compositions which control foaming in aqueous systems and by nature of their unique cloud point characteristics are insoluble and particulate above their inverse cloud point, and soluble below it. This property makes them particulate non-depositing defoamers. As the defoamed aqueous system cools down these novel products become soluble, preventing insoluble material (pitch) from depositing on process equipment and matter being processed.

REFERENCES:
patent: 2965658 (1960-12-01), Kirkpatrick
patent: 3180836 (1965-04-01), Jursich
patent: 3793223 (1974-02-01), Lichtman et al.
patent: 4071468 (1978-01-01), Abel et al.
patent: 4107073 (1978-08-01), Maciaszek
patent: 4132694 (1979-01-01), Heyden et al.
patent: 4225456 (1980-09-01), Schmidt et al.
patent: 4518459 (1985-05-01), Freis et al.

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