초록 ▼

Detergent compositions containing organic surface active agents, water-insoluble aluminosilicate ion exchange materials, sodium silicate having an SiO2: 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 produc

Detergent compositions containing organic surface active agents, water-insoluble aluminosilicate ion exchange materials, sodium silicate having an SiO2: 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.

대표청구항 ▼

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 exchan

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: Naz[(AlO2)z.(SiO2)y.xH2O 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. CaCO3 eq./g. and a calcium ion exchange rate of at least about 2 grains Ca++/gallon/minute/gram; (b) amorphous hydrated aluminosilicate material of the empirical formula Mz(zAlO2.ySiO2) 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 CaCO3 hardness per gram of anhydrous aluminosilicate and a Mg++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 SiO2: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. 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: Naz[(AlO2)z.(SiO2)y. xH2O 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. CaCO3 eq./g. and a calcium ion exchange rate of at least about 2 grains Ca++/gallon/minute/gram; (1.2) amorphous hydrated aluminosilicate material of the empirical formula: Mz(zAlO2.ySiO2) 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 CaCO3 hardness per gram of anhydrous aluminosilicate and a Mg++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 SiO2: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.