Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
305 words
In a liquid hand dishwashing composition of the type having a pH of not more than 7 and comprising from about 10 to about 50% by weight of a detergent active compound from 5 to 40% by weight of which is a calcium/magnesium sensitive anionic synthetic detergent selected from the group consisting essentially of C 11-18 α and random alkene sulphonates, random C 13-18 alkane sulphonates, C 10 -C 15 alkyl benzene sulphonates, C 11 -C 15 primary and secondary alcohol sulphates and mixtures thereof, and water the improvement which comprises in incorporating in the composition from 0.01 to 2% by weight of a phosphate monoester having the general formulae ##EQU5## wherein x + y + z is from 9-17 and one of x,y and z may be zero, and n is zero or 1, ##EQU6## wherein R and R 1 are C 8 -C 18 alkyl groups and one of R and R 1 may be hydrogen, ##EQU7## where a + b is from 10-16 and one of a and b may be zero and n is zero or 1, and (iv) analogues of said esters having the formulae (i), (ii) and (iii), the alkyl groups being substituted by alkenyl groups, and from 1 to 40% by weight of a nonionic or anionic solubilizer, a 0.05% aqueous solution of which will remain clear at 24°H of hardness and neutral pH at temperatures of from 20°-45°C the ratio of the total amount of detergent active compound and solubilizer to the amount of phosphate monoester in the composition being from 1500:1 to 30:1 when the phosphate monoester is derived from a linear primary alcohol, from 1000:1 to 50:1 when the phosphate monoester is derived from a branched chain primary alcohol, and from 600:1 to 150:1 when the phosphate monoester is derived from a linear secondary alcohol.
Claim 2
Dependent Claim
305 words
In a liquid hand dishwashing composition of the type having a pH of not more than 7 and comprising from about 10 to about 50% by weight of a detergent active compound from 5 to 40% by weight of which is a calcium/magnesium sensitive anionic synthetic detergent selected from the group consisting essentially of C 11-18 α and random alkene sulphonates, random C 13-18 alkane sulphonates, C 10 -C 15 alkyl benzene sulphonates, C 11 -C 15 primary and secondary alcohol sulphates and mixtures thereof, and water the improvement which comprises in incorporating in the composition from 0.01 to 2% by weight of a phosphate monoester having the general formulae ##EQU5## wherein x + y + z is from 9-17 and one of x,y and z may be zero, and n is zero or 1, ##EQU6## wherein R and R 1 are C 8 -C 18 alkyl groups and one of R and R 1 may be hydrogen, ##EQU7## where a + b is from 10-16 and one of a and b may be zero and n is zero or 1, and (iv) analogues of said esters having the formulae (i), (ii) and (iii), the alkyl groups being substituted by alkenyl groups, and from 1 to 40% by weight of a nonionic or anionic solubilizer, a 0.05% aqueous solution of which will remain clear at 24°H of hardness and neutral pH at temperatures of from 20°-45°C the ratio of the total amount of detergent active compound and solubilizer to the amount of phosphate monoester in the composition being from 1500:1 to 30:1 when the phosphate monoester is derived from a linear primary alcohol, from 1000:1 to 50:1 when the phosphate monoester is derived from a branched chain primary alcohol, and from 600:1 to 150:1 when the phosphate monoester is derived from a linear secondary alcohol.
Claim 3
Dependent Claim
24 words
A dishwashing composition according to claim 1 wherein the alkyl phosphate ester is in the form of a sodium, potassium or ammonium half salt.
Claim 4
Dependent Claim
18 words
A dishwashing composition according to claim 1 comprising from 0.02 to 0.1% by weight of the phosphate monoester.
Claim 5
Dependent Claim
27 words
A dishwashing composition according to claim 1 comprising from 0.5 to 5% by weight of an acid pH controller having a pKa in the range of 3-6.
Claim 6
Dependent Claim
29 words
A dishwashing composition according to claim 4 wherein the pH controller is selected from the group consisting of malonic, succinic, glutaric, citric, tartaric and lactic acid, and mixtures thereof.
Claim 7
Dependent Claim
27 words
A dishwashing composition according to claim 4 wherein the pH controller is selected from the group consisting of phthalic, adipic, fumaric and benzoic acid, and mixtures thereof.