Patent EP0220024A2 successfully refreshed from Google Patents.
EP0220024A2
Expired / Lapsed
EP
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Granular detergent compositions having improved solubility
Assignee: Procter and Gamble Co
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Filing: 1986-10-09
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Granted: —
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Expires: 2006-10-09
Abstract
Abstract Spray dried detergent granules containing high levels of certain surfactants are compacted under certain conditions and admixed with other ingredients to form dense, rapidly dissolving detergent compositions.
Inventors
- 👤 Jeffrey Elijah Moore
- 👤 Brett Alan Evans
- 👤 Richard Hansen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 23:03
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/37; C11D11/00; C11D11/02; C11D17/00; C11D17/06; C11D17/065; C11D3/00; C11D3/02; C11D3/04; C11D3/08; C11D1/12; C11D1/14; C11D1/22
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
210 words
A granular detergent composition prepared by: (1) forming base granules comprising, by weight: (a) from 30% to 85% of a mixture of a C₁₁-C₁₃ alkylbenzene sulfonate surfactant and a C₁₂-C₁₆ alkyl sulfate surfactant in a weight ratio of sulfonate surfactant to sulfate surfactant of from 4:1 to 1:4; (b) an alkali metal silicate having a molar ratio of SiO₂ to alkali metal oxide of from 1.0 to 3.2; the weight ratio of (a) to (b) being from 1.5:1 to 6:1; (c) from 10% to 60% of a water-soluble sulfate; and (d) from 0% to 20% of a pyrophosphate or anhydrous Form 1 tripolyphosphate material or mixtures thereof; said base granules being prepared by drying an aqueous slurry comprising the above components; (2) mixing said base granules with from 0% to 300%, by weight of the base granules, of a detergent builder material; (3) compacting said base granules or said base granule-builder material mixture at a pressure of from 137.9 to 1379 kPa; (4) granulating the resulting compacted mass and (5) admixing an additional 0% to 300%, by weight of the base granules, of a detergent builder material; said composition having a bulk density of from 0.55 to 1.2 g/cc and an average particle size of from 20 to 1500 micrometers.
Claim 2
Dependent Claim
210 words
A granular detergent composition prepared by: (1) forming base granules comprising, by weight: (a) from 30% to 85% of a mixture of a C₁₁-C₁₃ alkylbenzene sulfonate surfactant and a C₁₂-C₁₆ alkyl sulfate surfactant in a weight ratio of sulfonate surfactant to sulfate surfactant of from 4:1 to 1:4; (b) an alkali metal silicate having a molar ratio of SiO₂ to alkali metal oxide of from 1.0 to 3.2; the weight ratio of (a) to (b) being from 1.5:1 to 6:1; (c) from 10% to 60% of a water-soluble sulfate; and (d) from 0% to 20% of a pyrophosphate or anhydrous Form 1 tripolyphosphate material or mixtures thereof; said base granules being prepared by drying an aqueous slurry comprising the above components; (2) mixing said base granules with from 0% to 300%, by weight of the base granules, of a detergent builder material; (3) compacting said base granules or said base granule-builder material mixture at a pressure of from 137.9 to 1379 kPa; (4) granulating the resulting compacted mass and (5) admixing an additional 0% to 300%, by weight of the base granules, of a detergent builder material; said composition having a bulk density of from 0.55 to 1.2 g/cc and an average particle size of from 20 to 1500 micrometers.
Claim 3
Dependent Claim
36 words
A composition according to Claim 1 wherein the base granules comprise from 35% to 60% of the sulfonate and sulfate surfactants, in a weight ratio of sulfonate surfactant to sulfate surfactant of from 2:1 to 1:2.
Claim 4
Dependent Claim
31 words
A composition according to either one of Claims 1 and 2 wherein the sulfonate surfactant is sodium C₁₂-C₁₃ linear alkylbenzene sulfonate and the sulfate surfactant is sodium C₁₄-C₁₅ linear alkyl sulfate.
Claim 5
Dependent Claim
22 words
A composition according to any one of Claims 1-3 wherein the weight ratio of (a) to (b) is from 2.0:1 to 4.0:1.
Claim 6
Dependent Claim
30 words
A composition according to any one of Claims 1-4 wherein the silicate is sodium silicate having a molar ratio of SiO₂ to alkali metal oxide of from 1.6 to 2.4.
Claim 7
Dependent Claim
34 words
A composition according to any one of Claims 1-5 wherein the base granules are mixed with from 50% to 150%, by weight of the base granules, of a detergent builder material in step (2).
Claim 8
Dependent Claim
23 words
A composition according to any one of Claims 1-6 wherein the detergent builder material mixed with the base granules comprises sodium tripolyphosphate hexahydrate.
Claim 9
Dependent Claim
33 words
A composition according to any one of Claims 1-7 wherein the mixture of step (2) is compacted at a pressure of from 275.8 to 1034 kPa, preferably of from 344.8 to 689.4 kPa.
Claim 10
Dependent Claim
40 words
A composition according to Claim 8 wherein the compacted mixture is admixed with additional (50% to 150%, by weight of the base granules) detergent builder material in an amount of from 50% to 150%, by weight of the base granules.
Claim 11
Dependent Claim
19 words
A composition according to any one of Claims 1-9 having a bulk density of from 0.70 to 0.9 g/cc.
Claim 12
Dependent Claim
91 words
A laminated laundry product comprising two plies of water insoluble tissue in which: (1) at least one ply is water permeable; (2) at least one ply defines more than one cup, each cup being surrounded by a rim of that ply; (3) the second ply is sealed to the first ply at least at the rims of the cups to physically separate the cups so that the contents of the cups remain in place; and more than one cup contains a granular detergent composition according to any one of Claims 1-13.
References Cited (Backward Citations)
No citation records indexed.
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