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US 4,208,301 AGranted
Microemulsion defoamer compositions and processes for their production and use
AssigneeDiamond Shamrock Corporation
InventorCharles T. Gammon
Life of this patent
Estimating the term…
Abstract
Microemulsion defoamer compositions which are oil in water colloidal dispersions are useful in defoaming aqueous systems such as in paper machines and latex paints. These compositions are prepared by mixing a water dispersible organic material, ethylene oxide condensate, coupling agent, water, basic material and antigelling agent.
Claims16
A microemulsion defoamer composition comprising:
- (a) from about 1 to about 20 parts by weight of water dispersible organic material,
- (b) from about 20 to about 50 parts by weight of ethylene oxide condensate selected from the group consisting of ethoxylated polyoxypropylene glycol, ethoxylated alkylphenol, ethoxylated alcohol, ethoxylated fatty acid, ethoxylated ester of fatty acid, ethoxylated amide of fatty acid and ethoxylated alkylamine wherein there are at least ten carbon atoms in the hydrophobic moiety,
- (c) from about 1 to about 15 parts by weight of coupling agent selected from the group consisting of hexylene glycol, butylene glycol, propylene glycol, ethylene glycol, diethylene glycol, dipropylene glycol, dibutylene glycol, triethylene glycol, tripropylene glycol, monomethyl ether of propylene glycol, monomethyl ether of dipropylene glycol, monomethyl ether of tripropylene glycol, monobutyl ether of ethylene glycol, monobutyl ether of diethylene glycol and monoethyl ether of ethylene glycol,
- (d) from about 76 to about 10 parts by weight of water,
- (e) from about 0.5 to about 3 parts by weight of basic material, and
- (f) from about 1 to about 5 parts by weight of antigelling agent which is an alcohol having less than eight carbon atoms.
3 more elements
A microemulsion defoamer composition comprising:
- (a) from about 1 to about 20 parts by weight of water dispersible organic material selected from the group consisting of mineral seal oil, fuel oil, paraffinic mineral oil, naphthenic mineral oil, Oxo alcohol bottoms, methyl fatty ester, mustard seed oil, alkyl amide having from about 10 to about 22 carbon atoms in the alkyl radical, propylene oxide condensates of aliphatic acid having at least ten carbon atoms, silicone oil and propoxylated butanol,
- (b) from about 20 to about 50 parts by weight of ethylene oxide condensate selected from the group consisting of ethoxylated fatty acid and ethoxylated ester of fatty acid,
- (c) from about 1 to about 15 parts by weight of coupling agent selected from the group consisting of hexylene glycol, dipropylene glycol ether and monobutyl ether of ethylene glycol,
- (d) from about 76 to about 10 parts by weight of water,
- (e) from about 0.5 to about 3 parts by weight of basic material selected from the group consisting of potassium hydroxide and secondary amine wherein these are less than ten carbon atoms in each alkyl radical in the amine, and
- (f) from about 1 to about 5 parts by weight of antigelling agent which is an alcohol having less than eight carbon atoms.
3 more elements
A microemulsion defoamer composition comprising:
- (a) from about 1 to about 20 parts by weight of mineral seal oil,
- (b) from about 20 to about 50 parts by weight of ethylene oxide condensate of ditallow ester of polyoxyethylene glycol having a molecular weight of 600,
- (c) from about 1 to about 15 parts by weight of hexylene glycol, monobutyl ether of ethylene glycol and dipropylene glycol ether,
- (d) from about 76 to about 10 parts by weight of water,
- (e) from about 0.5 to about 3 parts by weight of diethanolamine, and
- (f) from about 1 to about 5 parts by weight of isopropanol.
3 more elements
Dependencies are inferred from the claim text.