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US 4,576,728 AGranted
Cleaning compositions
AssigneeThe Procter & Gamble Company
InventorBarry Stoddart
Life of this patent
Estimating the term…
Abstract
Aqueous cleaning compositions displaying shear thinning behaviour are provided, comprising from 0.1% to 5% by weight C.sub.12 -C.sub.15 alkyl amine oxides, together with from 0.01 to 1% by weight of an aromatic molecule containing ring substitution in at least two positions, one substituent being a carboxylic acid group. Compositions containing alkali metal hypochlorite bleach are disclosed in which the preferred aromatic molecule is m- or p-chlorobenzoic acid.
Claims18
A thickened aqueous cleaning composition consisting essentially of
- (a) from about 0.1% to about 5% by weight of a tertiary amine oxide of formula R.sub.1 R.sub.2 R.sub.3 N--O wherein R.sub.1 is a C.sub.12 -C.sub.15 linear and branched alkyl groups and R.sub.2 and R.sub.3 are independently selected from the group consisting of C.sub.1 -C.sub.4 alkyl groups and C.sub.2 -C.sub.4 hydroxyl alkyl groups;
- (b) from about 0.01% to about 1% by weight of a viscosity enhancing compound selected from the group consisting of [salicylic acid and its 5-sulpho and 3,5-dimethyl derivatives,] m- and p-chloro benzoic acid, p-bromobenzoic acid, p-toluic acid and m-nitrobenzoic acid, and mixtures of any of the foregoing;
- (c) from 0% to about 25% by weight of an ionisable compound selected from the group consisting of non surface active organic and inorganic compounds;
- said composition exhibiting a viscosity of at least about 500 mPa.sec at a shear rate of 10.8 sec.sup.-1 and a viscosity of no more than about 50 mPa sec at a shear rate of 692 sec.sup.-1 at 21.degree. C.
1 more element
A thickened aqueous cleaning composition consisting essentially of
- (a) from about 0.1% to about 5% by weight of a tertiary amine oxide of formula R.sub.1 R.sub.2 R.sub.3 N--O wherein R.sub.1 is a C.sub.12 -C.sub.15 linear and branched alkyl groups and R.sub.2 and R.sub.3 are independently selected from the group consisting of C.sub.1 -C.sub.4 alkyl groups and C.sub.2 -C.sub.4 hydroxyl alkyl groups;
- (b) from about 0.01% to about 1% by weight of a viscosity enhancing compound selected from the group consisting of [salicylic acid and its 5-sulpho and 3,5-dimethyl derivatives,] m- and p-chloro benzoic acid, p-bromobenzoic acid, p-toluic acid and m-nitrobenzoic acid, and mixtures of any of the foregoing;
- (c) from 0% to about 25% by weight of an ionisable compound selected from the group consisting of non surface active organic and inorganic compounds;
- (d) an auxiliary surfactant in an amount not exceeding about 100% by weight of amine oxide present;
- said composition exhibiting a viscosity of at least about 500 mPa.sec at a shear rate of 10.8 sec.sup.-1 and a viscosity of no more than about 50 mPa sec at a shear rate of 692 sec.sup.-1 at 21.degree. C.
2 more elements
A thickened aqueous bleaching composition consisting essentially of
- (a) from about 1% to about 1.5% by weight of a tertiary amine oxide of formula R.sub.1 R.sub.2 R.sub.3 N.fwdarw.O wherein R.sub.1 is a linear or substantially linear alkyl group containing an average of 14-15 carbon atoms, and R.sub.2 and R.sub.3 are methyl groups, said amine oxide constituting the sole surfactant species present in the composition;
- (b) from about 0.075% to about 0.20% of p-chlorobenzoic acid;
- (c) from about 1% to about 10% by weight of sodium hypochlorite, from about 1% to about 10% by weight of sodium chloride and from about 0.5% to about 1.5% by weight of sodium hydroxide said hypochlorite, chloride and hydroxide providing an ionic strength not exceeding about 4.0 g moles/dm.sup.3 ;
- (d) at least about 600 ppm of a compound selected from the group consisting of monocyclic and bicyclic monoterpene alcohols, esters thereof with C.sub.2 -C.sub.3 alkanoic acids, and mixtures of any thereof
- (e) from 0% to about 0.25% of a quaternised alkoxy silane having the general formula ##STR4## wherein R.sub.9 is C.sub.16 -C.sub.20 alkyl, R.sub.10 is C.sub.1 -C.sub.4 alkyl, R.sub.11 is C.sub.1 -C.sub.4 alkyl, y is an integer from 0 to 2, and X.sup.- is a water soluble anion.
2 more elements
Dependencies are inferred from the claim text.