Aqueous degreaser compositions containing an organic solvent and a solubilizing coupler
AssigneeBuckeye International, Inc.
InventorDonald N. VanEenam
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Abstract
Stable, aqueous degreaser compositions are formulated in the form of totally water soluble solutions containing at least one sparingly soluble organic solvent having specified compositional characteristics, a solubilizing coupler and water. The solubilizing coupler has a surface tension in excess of approximately 45 dynes/cm (at concentrations of approximately 0.01-1.0%) and is present in an amount not substantially exceeding twenty-five percent more than the minmum amount required to completely solubilize the organic solvent. The compositions so formulated exhibit markedly improved degreasing efficacy.
Claims22
A stable, aqueous degreaser composition in the form of a totally water soluble solution comprising at least one sparingly water soluble organic solvent, an organic solubilizing coupler and water and being free from foaming surfactants;
- (a) said sparingly water soluble organic solvent being characterized by:
- (i) having a water solubility in the range of approximately 0.2 to approximately 6 weight percent;
- (ii) not being a hydrocarbon or halocarbon;
- (iii) having one or more similar or dissimilar oxygen, nitrogen, sulfur, or phosphorous containing functional groups;
- (iv) being a solvent for hydrophobic soilants;
- and
- (v) being present in an amount exceeding its aqueous solubility in the absence of a solubilizing coupler;
- and;
- (b) said solubilizing coupler being an organic solubilizing coupler having a hydroprobe chain length in the range of C.sub.4 to C.sub.10 and an aqueous surface tension in excess of approximately 45 dynes/cm (at concentrations of approximately 0.01-1.0%) and being present in an amount not substantially exceeding twenty-five percent more than the minimum amount required to completely solubilize said organic solvent.
A stable, aqueous degreaser composition in the form of a totally water soluble solution and being free from foaming surfactants comprising:
- (a) 2-phenoxyethanol is an amount exceeding its aqueous solubility;
- (b) sodium cumene sulfonate in an amount not substantially exceeding twenty-five percent more than the amount minimally required to completely solubilize said 2-phenoxyethanol;
- and
- (c) water.
A stable, aqueous degreaser composition in the form of a totally water soluble solution and being free from foaming surfactants comprising:
- (a) 1-phenoxy-2-propanol in an amount exceeding its aqueous solubility;
- (b) sodium 2-ethylhexyl sulfate in an amount not substantially exceeding twenty-five percent more than the amount minimally required to completely solubilize said 1-phenoxy-2-propanol;
- and
- (c) water.
A stable, aqueous degreaser composition in the form of a totally water soluble solution and being free from foaming surfactants comprising:
- (a) benzyl alcohol in an amount exceeding its aqueous solubility;
- (b) sodium octane-1-sulfonate in an amount not substantially exceeding twenty-five percent more than the amount minimally required to completely solubilize said benzyl alcohol;
- and
- (c) water.
A stable, aqueous degreaser composition in the form of a totally water soluble solution and being free from foaming surfactants comprising:
- (a) dipropylene glycol mono-n-butyl ether in an amount exceeding its aqueous solubility;
- (b) sodium pelargonate in an amount not substantially exceeding twenty-five percent more than the amount minimally required to completely solubilize said dipropylene glycol mono-n-butyl ether;
- and
- (c) water.
Dependencies are inferred from the claim text.