Abrasion resistant spray dried aluminosilicate detergent composition
AssigneeThe Procter & Gamble Company
InventorTerence J. Rose
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Abstract
Detergent compositions containing particular water-insoluble metallo-silicate ion exchange builder materials, organic surface-active agents and a water-soluble vinyl copolymeric ingredient are provided. These compositions are capable of providing a cleaning performance, especially in hard water, which is substantially identical to what can be obtained from all polyphosphate built detergent compositions. Additionally, a process is disclosed for preparing detergent granules having improved physical properties, particularly breaking resistance and reduced dusting.
Claims13
A spray-dried granular detergent composition capable of rapidly reducing the free polyvalent metal ion content of an aqueous solution, comprising:
- (a) from about 5% to about 65% by weight of a water-insoluble hydrated metallo-silicate ion exchange material of a formula
- M.sub.z [(MeO.sub.2).sub.z.(SiO.sub.2).sub.y ] xH.sub.2 O
- wherein M is an alkali metal ion, Me is aluminum;
- the molar ratio of z to y is in the range from about 0.8 to about 1.0, and x is an integer from about 15 to about 264, said metallo-silicate ion exchange material having a particle size diameter of from about 0.1 micron to about 10 microns;
- a calcium 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) from about 5% to about 65% by weight of an organic surface active agent selected from the group consisting of anionic and nonionic surface-active agents and mixtures thereof;
- said anionic surface-active agents being selected from the group consisting of water-soluble salts of sulfates or sulfonates of reaction products having an alkyl group containing from about 8 to 22 carbon atoms and mixtures thereof;
- said nonionic surface active agents being selected from the group consisting of condensation products of synthetic fatty alcohols having from about 12 to about 16 carbon atoms with an average of about 4 to about 9 moles of ethylene oxide and the condensation product of tallow fatty alcohol with 11 moles of ethylene oxide and mixtures thereof;
- and
- (c) from about 0.10% to about 6% by weight of a water-soluble derivative of a copolymer of
- (1) a vinyl compound having the general formula RCH.dbd.CHR wherein one R represents a hydrogen atom and the other R represents an alkyl ether radical containing one carbon atom, and
- (2) maleic anhydride;
- the ratio of (1) to (2) being 2:1 to 1:2;
- the anhydride form of the maleic anhydride-vinyl alkyl ether copolymer having a specific viscosity (defined by measuring the viscosity of the solution of one gram of said anhydride form in 100 cc methylethylketone in a Cannon-Fenske Series 100 viscosity meter at 25.degree. C.) ranging from 0.1 to 6.0;
- (d) from about 0.5% to about 3% alkali metal silicate solids having a molar ratio of SiO.sub.2 /alkali metal.sub.2 O in the range from about 0.5 to about 4.0.
Dependencies are inferred from the claim text.