Detergent composition comprising synergistic hydrotrope mixture of two classes of organic phosphate esters

Claim 2

A detergent composition consisting essentially of I. a low-foaming, non-ionic surfactant and, Ii. a synergistic hydrotrope mixture of; A. a first phosphate ester which is the reaction product of: (1) phosphorus pentoxide with (2) a compound of Formula I: r -- och.sub.2 -- ch.sub.2 --.sub.n OH (I) wherein R is alkyl, aryl, aralkyl or alkaryl and wherein n is 1 to 10, and the molar ratio of (1) to (2) is 1:2 to 1:4.5 and B. a second phosphate ester which is the reaction product of: (1) 105-130% polyphosphoric acid with (2) a compound of Formula I and the molar ratio of (1) to (2) is 1:0.3 to 1:1.5 and wherein the weight ratio of A:B is 1:9 to 9:1, and Iii. a builder selected from the group consisting of alkali metal hydroxides, carbonates, bicarbonates, phosphates, silicates, sulfates, and chlorides.

Claim 3

The detergent composition of claim 1 wherein the weight ratio of surfactant (I) to synergistic hydrotrope mixture (II) is 1:20 to 5:1.

Claim 4

The detergent composition of claim 1 wherein the weight ratio of surfactant (I) to synergistic hydrotrope mixture (II) is 1:10 to 2:1.

Claim 5

The detergent composition of claim 1 wherein the weight ratio of surfactant (I) to builder (III) is 1:5 to 1:100.

Claim 6

A detergent composition of claim 1 wherein the second phosphate ester is a mixture of two different phosphate esters.

Claim 7

A composition according to claim 1 wherein A is the reaction product of phosphorous pentoxide with a compound of the formula C 6 H 5 OCH 2 CH 2 6 OH, and B is the reaction product of 115% polyphosphoric acid with a compound of the formula iso C 5 H 11 OCH 2 CH 2 4 OH .

Claim 8

A composition according to claim 1 wherein A is the reaction product of phosphorous pentoxide with a compound of the formula C 6 H 5 OCH 2 CH 2 6 OH and B is the reaction product of 115% polyphosphoric acid with a compound of the formula C 4 H 9 OCH 2 CH 2 OH.

Claim 9

A detergent composition consisting essentially of I. a low-foaming non-ionic surfactant and, Ii. a synergistic hydrotrope mixture of: A. a first phosphate ester which is the reaction product of: (1) phosphorus pentoxide with (2) a compound of Formula I: R -- OCH.sub.2 -- CH.sub.2 --.sub.n OH (I) wherein R is an alkyl group with 4 to 10 carbon atoms, a phenyl group or an alkyl-phenylene group whose alkyl portion has 1 to 4 carbon atoms and wherein n is 1 to 10, and the molar ratio of (1) to (2) is 1:2 to 1:4 and B. a second phosphate ester which is the reaction product of (1) 110-120% polyphosphoric acid with (2) a compound of Formula I wherein the molar ratio of (1) to (2) is 1:0.75 to 1:1.25, and wherein the weight ratio of A:B is 1:4 to 4:1, and Iii. a builder selected from the group consisting of alkali metal hydroxides, carbonates, bicarbonates, phosphates, silicates, sulfates and chlorides.

Claim 10

A detergent composition consisting essentially of I. a low-foaming non-ionic surfactant and, Ii. a synergistic hydrotrope mixture of: A. a first phosphate ester which is the reaction product of: (1) phosphorus pentoxide with (2) a compound of Formula I: R -- OCH.sub.2 -- CH.sub.2 --.sub.n OH (I) wherein R is an alkyl group with 4 to 10 carbon atoms, a phenyl group or an alkyl-phenylene group whose alkyl portion has 1 to 4 carbon atoms and wherein n is 1 to 10, and the molar ratio of (1) to (2) is 1:2 to 1:4 and B. a second phosphate ester which is the reaction product of (1) 110-120% polyphosphoric acid with (2) a compound of Formula I wherein the molar ratio of (1) to (2) is 1:0.75 to 1:1.25, and wherein the weight ratio of A:B is 1:4 to 4:1, and Iii. a builder selected from the group consisting of alkali metal hydroxides, carbonates, bicarbonates, phosphates, silicates, sulfates and chlorides.