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US 4,303,556 AGranted
Spray-dried detergent compositions
AssigneeThe Procter & Gamble Company
InventorRamon A. Llendado
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Abstract
Detergent compositions containing organic surface active agents, water-insoluble aluminosilicate ion exchange materials, sodium silicate having an SiO.sub.2 : alkali metal oxide weight ratio of from about 1.4:1 to 2.3:1, and a hydratable salt of a water-soluble weak organic acid. The composition is produced by drying an aqueous slurry. The resulting composition is an effective laundry detergent in the form of crisp, free-flowing granules which are highly soluble when made and which maintain their solubility on aging.
Claims10
A granular detergent composition comprising:
- (1) from about 5% to about 40% of a water-soluble organic surface active agent selected from the group consisting of anionic, nonionic, zwitterionic, and ampholytic detergents;
- (2) from about 10% to about 60% of a finely divided aluminosilicate ion exchange material selected from the group consisting of:
- (a) crystalline aluminosilicate material of the formula:
- Na.sub.z [(AlO.sub.2).sub.z.(SiO.sub.2).sub.y.xH.sub.2 O
- wherein z and y are at least 6, the molar ratio of z to y is from 1.0 to 0.5 and x is from 10 to 264, said material having a particle size diameter of from about 0.1 micron to about 10 microns, a calcium ion exchange capacity of at least about 200 mg. CaCO.sub.3 eq./g. and a calcium ion exchange rate of at least about 2 grains Ca.sup.++ /gallon/minute/gram;
- (b) amorphous hydrated aluminosilicate material of the empirical formula
- M.sub.z (zAlO.sub.2.ySiO.sub.2)
- wherein M is sodium, potassium, ammonium, or substituted ammonium, z is from about 0.5 to about 2, y is 1 and said material has a magnesium ion exchange capacity of at least about 50 milligram equivalents of CaCO.sub.3 hardness per gram of anhydrous aluminosilicate and a Mg.sup.++ exchange rate of at least about 1 grain/gallon/minute/gram/gallon and
- (c) mixtures thereof;
- (3) from about 3.5% to about 15% of an alkali metal oxide silicate solid having a weight ratio of SiO.sub.2 :alkali metal oxide of from about 1.4:1 to about 2.0:1, and
- (4) from about 0.5 to about 20% of a water-soluble salt of nitrilotriacetic acid,
- said granular detergent having been prepared by mixing the above components with water to form a slurry, and then removing water from the slurry by drying.
9 more elements
A process for producing crisp, free-flowing detergent granules comprising the steps of:
- (1) forming an aqueous slurry comprising:
- (a) from about 3.5% to about 30% of a water-soluble organic surface active agent selected from the group consisting of anionic, nonionic, zwitterionic, and ampholytic detergents;
- (b) from about 7% to about 45% of a finely divided aluminosilicate ion exchange material selected from the group consisting of:
- (1.1) crystalline aluminosilicate material of the formula:
- Na.sub.z [(AlO.sub.2).sub.z.(SiO.sub.2).sub.y. xH.sub.2 O
- wherein z and y are at least 6, the molar ratio of z to y is from 1.0 to 0.5 and x is from 10 to 264, said material having a particle size diameter of from about 0.1 micron to about 10 microns, a calcium ion exchange capacity of at least about 200 mg. CaCO.sub.3 eq./g. and a calcium ion exchange rate of at least about 2 grains Ca.sup.++ /gallon/minute/gram;
- (1.2) amorphous hydrated aluminosilicate material of the empirical formula:
- M.sub.z (zAlO.sub.2.ySiO.sub.2)
- wherein M is sodium, potassium, ammonium, z is from about 0.5 to about 2, y is 1 and said material has a magnesium ion exchange capacity of at least about 50 milligram equivalents of CaCO.sub.3 hardness per gram of anhydrous aluminosilicate and a Mg.sup.++ exchange rate of at least about 1 grain/gallon/minute/gram/gallon;
- and
- (1.3) mixtures thereof;
- (c) from about 2.5% to about 15% of an alkali metal oxide silicate solid having a weight ratio of SiO.sub.2 :alkali metal oxide of from about 1.4:1 to about 2.0:1;
- (d) from about 0.4% to about 15% of a water-soluble salt of nitrilotriacetic acid;
- and
- (e) from about 25% to about 50% water;
- (2) drying the slurry to form crisp, free-flowing detergent granules.
13 more elements
Dependencies are inferred from the claim text.