Back to results
US 4,072,621 AGranted
Detergent composition
AssigneeThe Procter & Gamble Company
InventorTerence J. Rose
Life of this patent
Estimating the term…
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.
Claims12
A 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 metallo-silicate ion exchange material of the formula
- M.sub.z [(MeO.sub.2).sub.z . (SiO.sub.2).sub.y ] xH.sub.2 O
- wherein M is a calcium exchangeable cation, Me is either aluminum or boron, z and y are integers;
- the molar ratio of z to y is in the range from about 1.0 to about 0.5 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 0.2 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) from about 10 to about 50% by weight of a nonionic surface-active agent selected from the group consisting of:
- (i) a water-soluble nonionic surface-active agent having the formula R(OC.sub.x H.sub.2x).sub.n OH wherein R represents an alkyl or alkenyl group having from 8 to 22 carbon atoms or an alkylated or alkenylated phenyl group having from 6 to 12 carbon atoms in the alkyl or alkenyl group, x is 2 or 3 and n ranges from 1 to 8, said nonionic surface-active agent having a hydrophilic lipophilic balance (HLB) of less than about 10.0.
- (ii) a nonionic polyethoxy surface active agent having a HLB in the range from 11:14.5 in conjunction with a component of the formula ##STR3## wherein R.sub.1 is a straight chain alkyl group, R.sub.2 is H or --CH.sub.3, the total number of carbon atoms in R.sub.1 and R.sub.2 is from 10 to 13, R.sub.2 is CH.sub.3 in from 40 to 60% by weight of the corresponding unethoxylated alcohols, and the average degree of ethoxylation n is from 2.5 to 4;
- (iii) a nonionic polyethoxy surface-active agent having a HLB in the range from 11:14.5 in conjunction with a nonionic surface-active agent of the formula ##STR4## wherein R.sub.1 is a straight chain alkyl group, R.sub.2 is H or --CH.sub.3, the total number of carbon atoms in R.sub.1 and R.sub.2 is from 10 to 13, R.sub.2 is CH.sub.3 in from 15 to 30% by weight of the unethoxylated alcohols, and the average degree of ethoxylation n is from 3 to 4;
- and
- (iv) 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 = CHR wherein one R represents a hydrogen atom and the other R represents an alkyl ether radical containing from one to about four carbon atoms and
- (2) maleic anhydride;
- the ratio of (1) to (2) being from 2:1 to 1:2.
15 more elements
A detergent composition capable of rapidly reducing the free polyvalent metal ion content of an aqueous solution, consisting essentially of:
- (a) from about 10 to about 50% of a water-insoluble alunino-silicate ion exchange material of the formula
- Na.sub.12 (AlO.sub.2.SiO.sub.2).sub.12.x H.sub.2 O
- wherein x is an integer of from about 20 to about 30, said ion exchange material being characterized by a particle size diameter of from about 0.2 micron to about 10 microns, a calcium ion exchange capacity from about 250 mg. eq./g., to about 352 mg CaCO.sub.3 eq./g., and a calcium ion exchange rate of at least about 4 grains/gallon/minute/gram;
- (b) from about 10 to about 50% by weight of a water-soluble nonionic detergent compound selected from the group consisting of:
- (i) a water-insoluble nonionic surface-active agent having the formula R(OC.sub.x H.sub.2x).sub.n OH wherein R represents an alkyl or alkenyl group having from 8 to 22 carbon atoms or an alkylated or alkenylated phenyl group having from 6 to 12 carbon atoms in the alkyl or alkenyl group, x is 2 or 3 and n ranges from 1 to 8, said non-ionic surface-active agent having a hydrophilic lipophilic balance (HLB) of less than about 10.0.
- (ii) a nonionic polyethoxy surface active agent having a HLB in the range from 11:14.5 in conjunction with a component of the formula ##STR5## wherein R.sub.1 is a straight chain alkyl group, R.sub.2 is H or --CH.sub.3, the total number of carbon atoms in R.sub.1 and R.sub.2 is from 10 to 13, R.sub.2 is CH.sub.3 in from 40 to 60% by weight of the corresponding unethoxylated alcohols, and the average degree of ethoxylation n is from 2.5 to 4;
- (iii) a nonionic polyethoxy surface-active agent having a HLB in the range from 11:14.5 in conjunction with nonionic surface-active agent of the formula ##STR6## wherein R.sub.1 is a straight chain alkyl group, R.sub.2 is H or --CH.sub.3, the total number of carbon atoms in R.sub.1 and R.sub.2 is from 10 to 13, R.sub.2 is CH.sub.3 in from 15 to 30% by weight of the unethoxylated alcohols, and the average degree of ethoxylation n is from 3 to 4;
- and
- (iv) mixtures thereof;
- and
- (c) from about 0.25 to about 4% 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 on alkyl ether radical containing from one to about four carbon atoms, and
- (2) maleic anhydride;
- the ratio of (1) to (2) being from 2:1 to 1:2;
- and
- (d) from about 5 to about 50% 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-cyclohexanecarboxylate, cis-cyclopentanetetracarboxylate, and sodium phloroglucinol trisulfonate.
13 more elements
Dependencies are inferred from the claim text.