Spray-dried granular detergent containing aluminosilicate, silicate, and pyrophosphate

Claim 2

A spray-dried granular detergent product comprising: a. from about 1% to about 40% by weight of an organic detergent component selected from the group consisting of anionic, nonionic, zwitterionic, and ampholytic detergents and mixtures thereof; b. from about 3% to about 25% by weight of a water insoluble crystalling aluminoslicate ion exchange material of the formula Na.sub.12 [AlO.sub.2.sup.. SiO.sub.2 ].sub.12.sup.. x H.sub.2 O

Claim 3

wherein x is an integer of from about 20 to about 30, said aluminosilicate having a particle size range of from about 0.2 micron to about 10 microns, having a calcium ion exchange capacity of at least about 200 mg. eq. CaCO 3 /g. and an ion exchange rate with calcium of at least about 2 grains of calcium ion per gallon per minute per gram; c. from about 5% by weight of alkali metal pyrophosphate; d. from about 7% to about 25% by weight of an alkali metal silicate having the weight ratio SiO 2 :M 2 O of from about 2.0:1 to about 4.0:1 wherein M is sodium metal; said product having a total free moisture content of from about 4.5% to about 7% by weight of the composition.

Claim 4

wherein x is an integer of from about 20 to about 30, said aluminosilicate having a particle size range of from about 0.2 micron to about 10 microns, having a calcium ion exchange capacity of at least about 200 mg. eq. CaCO 3 /g. and an ion exchange rate with calcium of at least about 2 grains of calcium ion per gallon per minute per gram; c. from about 5% by weight of alkali metal pyrophosphate; d. from about 7% to about 25% by weight of an alkali metal silicate having the weight ratio SiO 2 :M 2 O of from about 2.0:1 to about 4.0:1 wherein M is sodium metal; said product having a total free moisture content of from about 4.5% to about 7% by weight of the composition.

Claim 5

The composition of claim 1 wherein the alkali metal pyrophosphate is the sodium salt thereof.

Claim 6

The composition of claim 2 wherein the detergent component is anionic.

Claim 7

The composition of claim 3 wherein the alkali metal pyrophosphate is present at from about 10% to about 25% by weight.

Claim 8

The composition of claim 4 additionally comprising from about 5% to about 25% by weight of an alkali metal carbonate.

Claim 9

The composition of claim 4 wherein the free moisture content is from about 4.5% to about 6.5% by weight of the composition.

Claim 10

The composition of claim 6 wherein the alkali metal silicate is present at from about 7% to about 15% by weight.

Claim 11

The composition of claim 7 wherein the anionic detergent is selected from the group consisting of alkyl benzene sulfonates, alkyl ethoxy sulfates, and alkyl sulfates and mixtures thereof.

Claim 12

The composition of claim 8 wherein the aluminosilicate is present at from about 10% to about 20% by weight.

Claim 13

The composition of claim 9 wherein the silicate ratio is from about 2.4:1 to about 3.75:1.

Claim 14

The composition of claim 10 wherein the anionic detergent component is a mixture comprising: a. from about 2% to about 15% by weight of an alkyl benzene sulfonate; b. from about 2% to about 15% by weight of an alkyl ethoxy sulfate; and c. from about 2% to about 15% by weight of an alkyl sulfate.

Claim 15

The composition of claim 5 wherein the alkali metal carbonate is the sodium salt thereof.

Claim 16

The composition of claim 4 additionally comprising from about 3% to about 25% by weight of a member selected from the group consisting of the alkali metal citrates and the acid salts thereof.

Claim 17

The composition of claim 4 additionally comprising from about 0.1% to about 4% by weight of a glassy phosphate of the formula (M.sub.2 O).sub.x (P.sub.2 O.sub.5).sub.y wherein y is from about 5 to 50 and the weight ratio of y:x is from about 1:1 to about 1:1.5.

Claim 18

The composition of claim 4 additionally comrising from about 0.1% to about 10% by weight of a polyethylene glycol soil suspending agent having a molecuolar weight of from about 400 to about 10,000.

Claim 19

The composition of claim 4 wherein the weight ratio of the phosphate builder to the aluminosilicate is less than about 1:1.