Polybutene-based foam control composition for aqueous systems
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United States of America Patent
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Oct 8, 1996
Grant Date -
N/A
app pub date -
Apr 6, 1994
filing date -
Apr 6, 1994
priority date (Note) -
Expired
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Abstract
A stable defoamer composition and method of defoaming an aqueous system is disclosed. The composition comprises an alcohol alkoxylate, at least one surfactant having a melting point less than 20.degree. C., and a low HLB, ethylene oxide/propylene oxide block copolymer, said block copolymer carried in a mixture comprising polybutene.
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