Method for breaking foams and apparatus useful therefor

Details Method for breaking foams and apparatus useful therefor Method for breaking foams and apparatus useful therefor

1973-02-12

1976-06-22

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

252358, 252361, B01D 1900, B01D 1902

Patent

active

039650340

ABSTRACT:
A method for breaking foams is disclosed which comprises passing the foam to be broken through a packing material which is chemically inert with respect to the foam and which consists essentially of glass, plastic or metal having a coating thereon of a compound of the formula CF.sub.3 --(CF.sub.2).sub.n --X, wherein n is a whole number between 3 and 9, X is a functional group such as C.sub.2 H.sub.4 --SO.sub.3 --C.sub.4 H.sub.9, said coating forming a stable composition with the packing material substrate.

REFERENCES:
patent: 1871004 (1932-08-01), Lopez
patent: 2435205 (1948-02-01), Davis et al.
patent: 2544564 (1951-03-01), Peterson et al.
patent: 3268456 (1966-08-01), Fruth
Chemical Abstracts: vol. 75, 1971, 22032n.

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