Liquid detergent compositions
AssigneeThe Procter & Gamble Company
InventorJerome H. Collins
Life of this patent
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Abstract
Heavy duty liquid detergent compositions containing a mixture of particular nonionic surfactants, anionic surfactants, alkanolamines, and minor amounts of fatty acid-based corrosion inhibitors, said compositions being especially adapted for stain and soil removal from fabrics either when applied directly to such fabrics before washing or when employed as detergent compositions for conventional fabric laundering, are provided. In a preferred embodiment an alkali metal base in an amount sufficient to raise the pH of the composition to 7.5 to 10 is added for increased corrosion inhibition.
Claims12
A liquid detergent composition consisting essentially of:
- (a) from about 20% to about 50% by weight of a nonionic surfactant produced by the condensation of from about 5 moles to about 11 moles of ethylene oxide with one mole of a C.sub.13 to C.sub.16 alcohol, said nonionic surfactant being characterized by an HLB of from about 9.5 to about 15, or mixtures thereof;
- (b) an anionic surfactant which is a mixture of an alkanolamine and an alkali metal salt of an alkylbenzene sulfonic acid where the alkyl group contains from about 9 to about 15 carbon atoms and wherein said alkanolamine is selected from the group consisting of mono-, di-, and triethanolamines and said alkali metal is selected from the group consisting of sodium and potassium, at a weight ratio of nonionic surfactant to anionic surfactant of from about 1.8:1 to about 3.5:1 based on the free acid form of the anionic surfactant;
- (c) at least 1% by weight of free alkanolamine selected from the group consisting of mono-, di-, and triethanolamine;
- (d) from about 0.15% to about 2% by weight of a C.sub.10 -C.sub.22 fatty acid, or mixtures thereof;
- (e) from about 0.1% to about 4.0% by weight of an alkali metal base selected from the group consisting of sodium and potassium hydroxides;
- and
- (f) the balance being water or a water-alcohol carrier liquid wherein said alcohol is a monohydric alcohol containing from 1 to to about 5 carbon atoms.
Dependencies are inferred from the claim text.