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US 4,274,975 AGranted
Detergent composition
AssigneeThe Procter & Gamble Company
InventorsJohn M. Corkill, Bryan L. Madison, Michael E. Burns
Life of this patent
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Abstract
Detergent compositions containing aluminosilicate ion exchange materials as builders are provided. The aluminosilicate builders are characterized by the speed and efficiency with which they remove hardness ions from water.
Claims2
A detergent composition for use as a scouring cleanser and capable of rapidly reducing the free polyvalent metal ion content of an aqueous solution, comprising:
- (a) from about 25% to about 95% by weight of an abrasive;
- (b) from about 10% to about 35% by weight of a water-insoluble crystalline aluminosilicate ion exchange material of the formula
- Na.sub.z [(AlO.sub.2).sub.z.(SiO.sub.2).sub.y ].times.H.sub.2 O
- wherein z and y are integers of at least 6;
- the molar ratio of z to y is in the range from 1.0 to about 0.5, and x is an integer from about 15 to about 264;
- said aluminosilicate ion exchange material having a particle size diameter from about 0.1 micron to about 100 microns;
- a calcium ion exchange capacity on an anhydrous basis of at least about 200 milligrams equivalent of CaCO.sub.3 hardness/gram;
- and a calcium ion exchange rate on an anhydrous basis of at least about 2 grains/gallon/minute/gram;
- (c) from about 0% to about 20% by weight of an auxiliary builder salt selected from the group consisting of sodium tripolyphosphate, sodium carbonate, sodium bicarbonate, sodium silicate, sodium citrate, sodium oxydisuccinate, sodium mellitate, sodium nitrilotriacetate, sodium ethylenediaminetetraacetate, sodium polymaleate, sodium polyitaconate, sodium polymesaconate, sodium polyfumarate, sodium polyaconitate, sodium polycitraconate, sodium polymethylenemalonate, sodium carboxymethyloxymalonate, sodium carboxymethyloxysuccinate, sodium cis-cyclohexanehexacarboxylate, cis-cyclopentanetetracarboxylate, and sodium phloroglucinol trisulsulphonate;
- and
- (d) from about 0.2% to about 10% by weight of a water soluble organic surface-active agent selected from the group consisting of anionic, nonionic, ampholytic and zwitterionic surface-active agents and mixtures thereof.
8 more elements
Dependencies are inferred from the claim text.