Compositions – Preservative agents – Anti-corrosion
Patent
1978-12-18
1980-10-28
Lovering, Richard D.
Compositions
Preservative agents
Anti-corrosion
162169, 162173, 252358, B01D 1904, C09K 300
Patent
active
042305993
ABSTRACT:
This invention relates to defoamed compositions and processes for inhibiting foaming in a liquid system containing water. Maleic ester copolymers in admixture with a mineral oil are particularly useful in pulp and paper manufacturing applications. The defoamers of the invention are compositions comprising mineral oil and a polymer which is an alkyl ester of the reaction product of a maleic compound and a monoethylenically unsaturated monomer copolymerizable therewith. The alkyl ester has the formula: ##STR1## wherein X equals hydrogen, alkyl of 1 to about 30 carbon atoms, phenyl, ##STR2## wherein R' is hydrogen or alkyl of 1 to about 30 carbon atoms, R" is alkyl of 1 to about 30 carbon atoms; R is hydrogen or substituted or unsubstituted alkyl or alkyl ethers of about 8 to about 30 carbon atoms, wherein at least one R is said alkyl, y is an integer of 1-5, and the sum of m and n are such that the polymer has a molecular weight of about 1000 to 100,000; the molar ratio of m:n being respectively about 50:50 to about 100:0.
REFERENCES:
patent: 2615843 (1952-10-01), Giammaria
patent: 2704277 (1955-03-01), Giammaria
patent: 2866775 (1958-12-01), Sellers
patent: 3296131 (1967-01-01), Knecht, Jr.
patent: 3388106 (1968-06-01), Muskat
patent: 3515575 (1970-06-01), Arnold
patent: 3530101 (1970-09-01), Haynes et al.
patent: 3697440 (1972-10-01), Lichtman et al.
patent: 3705859 (1972-12-01), Boylan
patent: 3730894 (1973-05-01), Heilweil et al.
patent: 3755264 (1973-08-01), Testa
patent: 3784586 (1974-01-01), Thomas et al.
patent: 3793223 (1974-02-01), Lichtman et al.
patent: 3821069 (1974-06-01), Wurzburg
patent: 3968005 (1976-07-01), Wurzburg
patent: 4024072 (1977-05-01), Shane et al.
Lovering Richard D.
The Diversey Corporation
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