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US 4,379,080 AGranted
Granular detergent compositions containing film-forming polymers
AssigneeThe Procter & Gamble Company
InventorAlan P. Murphy
Life of this patent
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Abstract
Granular detergent compositions containing an organic surfactant, an aluminosilicate ion exchange material, a water-soluble neutral or alkaline salt and a film-forming polymer soluble in an aqueous slurry of the above components are disclosed. The compositions contain no or low levels of phosphate and silicate materials, yet provide granules which exhibit superior free-flowing characteristics and solubility in the laundering solution.
Claims31
A granular detergent composition comprising:
- (a) from about 5% to about 40% by weight of an organic surfactant selected from the group consisting of anionic, nonionic, zwitterionic, ampholytic and cationic surfactants, and mixtures thereof;
- (b) from about 10% to about 60% by weight of a finely divided aluminosilicate ion exchange material selected from the group consisting of:
- (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/gallon;
- (2) 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 and y is 1, said material having 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
- (3) mixtures thereof;
- and
- (c) from about 5% to about 75% by weight of a water-soluble neutral or alkaline salt;
- and
- (d) from about 0.1% to about 10% by weight of a film-forming polymer soluble in an aqueous slurry comprising the above components, said film-forming polymer being an at least partially neutralized salt of:
- a homopolymer or copolymer of acrylic acid, hydroxyacrylic acid, or methacrylic acid, cellulose acetate sulfate;
- cellulose sulfate;
- hydroxyethylcellulose sulfate;
- methylcellulose sulfate;
- or hydroxypropylcellulose sulfate;
- said composition containing less than about 10% by weight of phosphate materials and less than about 3% by weight of alkali metal silicate materials.
17 more elements
Dependencies are inferred from the claim text.