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US 4,397,776 AGranted
Liquid detergent compositions containing alpha-amine oxide surfactants
AssigneeThe Procter & Gamble Company
InventorJames F. Ward
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Abstract
Liquid detergent compositions containing alpha-amine oxide surfactants and having a pH of from about 9.0 to about 13.0 are disclosed. The alpha-amine oxides have improved stability against metal-catalyzed decomposition in the present compositions. The compositions preferably contain heavy-metal chelating agents, and also other surfactants and detergent adjunct materials.
Claims15
A liquid detergent composition having a pH of from about 9.0 to about 13.0, comprising:
- (a) from about 0.005% to about 40% by weight of an amine oxide surfactant of the formula ##STR2## wherein R.sup.1 is hydrogen or a C.sub.1 -C.sub.20 hydrocarbyl group;
- each R.sup.2 is a C.sub.1 -C.sub.20 hydrocarbyl group or a C.sub.2 -C.sub.3 alkylene oxide group containing from 1 to about 10 alkylene oxide units;
- and X is hydrogen or a water-soluble metal, ammonium or substituted ammonium cation;
- provided that the total number of carbon atoms in hydrocarbyl groups at the R.sup.1 and R.sup.2 substituents is from about 8 to about 36;
- and
- (b) from about 0.001% to about 35% by weight of a heavy-metal chelating agent selected from the group consisting of alkali-metal, ammonium and substituted ammonium polycarboxylates, aminopolycarboxylates, polyphosphonates, aminopolyphosphonates, and polyphosphates, and mixtures thereof.
3 more elements
Dependencies are inferred from the claim text.