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US 4,492,646 AGranted
Liquid dishwashing detergent containing anionic surfactant, suds stabilizer and highly ethoxylated nonionic drainage promotor
AssigneeThe Procter & Gamble Company
InventorJohn B. Welch
Life of this patent
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Abstract
Aqueous liquid dishwashing detergent compositions are prepared containing from about 10% to about 50% of an anionic surfactant, from about 2% to about 20% of a relatively highly ethoxylated draining promoting nonionic surfactant, from about 1.5% to about 10% of a suds stabilizing nonionic surfactant, and from about 20% to about 88% water. The compositions exhibit advantages of less filming and spotting for tableware washed in dilute solutions of the compositions after rinsing and drain drying.
Claims8
A liquid detergent composition comprising, by weight:
- (a) from about 10% to about 50% of an anionic surfactant;
- (b) from about 3% to about 8% of a drainage promoting nonionic surfactant selected from the group consisting of:
- (i) an ethoxylated aliphatic alcohol of the formula
- R(OC.sub.2 H.sub.4).sub.n OH
- wherein R is an aliphatic hydrocarbyl radical containing from about 16 to about 30 carbon atoms, and n is from about 16 to about 100;
- (ii) an ethoxylated alkyl phenol of the formula
- R(OC.sub.2 H.sub.4).sub.n OH
- wherein R is an alkyl phenyl radical containing a total of from about 18 to about 30 carbon atoms and at least one alkyl group containing at least about 12 carbon atoms, and n is from about 16 to about 100;
- (iii) the condensation product of mono C.sub.16-22 fatty acid esters of polyglycols with from about 13 to about 100 moles of ethylene oxide per mole of the monoester;
- (iv) the condensation product of cholesterol and from about 13 to about 100 moles of ethylene oxide;
- (v) a material which is a condensate of ethylene oxide, propylene oxide and a compound containing hydroxy or amine groups onto which alkylene oxides can be polymerized, said polymer having a molecular weight of from about 500 to about 15,000, an ethylene oxide content of from about 30% to about 70% by weight and a propylene oxide content of from about 30% to about 70% by weight;
- and
- (vi) mixtures thereof;
- (c) from about 2% to about 8% of a suds stabilizing nonionic surfactant selected from the group consisting of amine oxides, ammonia, monoethanol and diethanol amides of fatty acids having an acyl moiety of from about 8 to about 18 carbon atoms, and mixtures thereof;
- (d) from 0% to about 10% of a detergency builder selected from inorganic phosphates, polyphosphates, silicates and carbonates, organic carboxylates, phosphonates and mixtures thereof;
- and
- (e) from about 20% to about 88% water.
14 more elements
Dependencies are inferred from the claim text.