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US4618446A Expired / Lapsed US ⏱️ 0.0 years remaining

Spherulitic liquid detergent composition

Assignee: Solvay Solutions UK Ltd
•
Filing: 1984-12-21
•
Granted: 1986-10-21
•
Expires: 2004-12-21
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Abstract

Abstract Liquid detergent compositions suitable for laundry use consist essentially of water, Electrolyte, Active Ingredient and preferably a Builder. They comprise a space-filling, floc-like aggregate of surfactant containing spherulites, substantially cocontinuous with an aqueous liquid micellar solution. They are shear thinning, mobile, stable to shear stress, storage under extreme climatic conditions and high pH.

Inventors

  • 👤 William P. Haslop
  • 👤 John M. Allonby
  • 👤 Brian J. Akred
  • 👤 Edward T. Messenger

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 10:59
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/14; C11D17/00; C11D17/0008; C11D17/0013; C11D17/0026

Claims Analysis

Total Claims: 22
Claim 1
Independent Claim 38 words
A Stable, Pourable, fluid, detergent composition consisting essentially of water, about 5% to about 30%, by weight, Active Ingredients and sufficient Electrolyte to form with at least part of said Active Ingredients a space filling floc of Spherulites.
Claim 2
Dependent Claim 38 words
A Stable, Pourable, fluid, detergent composition consisting essentially of water, about 5% to about 30%, by weight, Active Ingredients and sufficient Electrolyte to form with at least part of said Active Ingredients a space filling floc of Spherulites.
Claim 3
Dependent Claim 66 words
A composition according to claim 1 wherein said Active Ingredients consist essentially of a mixture of (i) a non alkoxylated anionic surfactant with (ii) a cosurfactant selected from ethoxylated anionic surfactants, alkanolamides, amine oxides and mixtures thereof in a relative proportion of (i):(ii) of from 5:1 to 1:3 and (iii) from 0 to 20% of the total weight of Active Ingredient of an ethoxylated non-ionic surfactant.
Claim 4
Dependent Claim 131 words
A composition according to claim 1 consisting essentially of: A--A mixture of (i) a sodium alkylbenzene sulphonate having an average of 10 to 18, aliphatic carbon atoms with (ii) a sodium alkyl ether sulphate having an alkyl group with an average of from 8 to 18 carbon atoms, and from 1 to 20, ethylene-oxy and/or propylene-oxy groups; in a weight ratio of (i):(ii), of between 10:1 and 1:10; B--A Builder selected from sodium tripolyphosphate, zeolite, sodium nitrilotriacetate and mixtures thereof in a weight ratio of B:A of from 1.1:1 to 4:1; C--An Electrolyte selected from sodium carbonate, sodium silicate, sodium nitrate, sodium chloride and mixtures thereof in a concentration of from 2 to 20% by weight of the composition; said composition having a Pay Load of 30 to 50% by weight.
Claim 5
Dependent Claim 16 words
A composition according to claim 3 wherein the proportion of (i):(ii) is from 10:2 to 10:4.
Claim 6
Dependent Claim 17 words
A composition according to claim 4 wherein the weight ratio of B:A is from 2:1 to 3:1.
Claim 7
Dependent Claim 22 words
A composition according to claim 5 wherein the component C is present in a concentration of from 7 to 15% by weight.
Claim 8
Dependent Claim 15 words
A composition according to claim 6 having a Pay Load of from 38 to 45%.
Claim 9
Dependent Claim 27 words
A composition according to claim 7 wherein the component (ii) has an average of C 10-14 alkyl group and from 3 to 6 ethyleneoxy groups per molecule.
Claim 10
Dependent Claim 20 words
A composition according to claim 8 wherein the component C is selected from sodium carbonate, sodium silicate and mixtures thereof.
Claim 11
Dependent Claim 19 words
A composition according to claim 9 wherein the component B is selected from sodium tripolyphosphate, zeolite and mixtures thereof.
Claim 12
Dependent Claim 163 words
A Pourable, Stable, fluid, detergent composition consisting essentially of: water; a concentration of from 5 to 30% by weight of the composition of Active Ingredients which consist essentially of (i) at least one non-ethoxylated anionic surfactant and (ii) at least one cosurfactant that is capable of forming stable foams, the proportions of (i) to (ii) being such that when a soluble Electrolyte is added progressively to an aqueous mixture containing said Active Ingredients at said concentration, a First Conductivity Minimum is reached at which the mixture is turbid and Stable; suspended Solid Builder, the total weight ration of Builder to Active Ingredients being from 1:1 to 4:1; and dissolved Electrolyte in a proportion sufficient to form a Stable composition corresponding to the Conductivity trough containing said First Conductivity Minimum, and greater than any concentration below which the composition is Shear Sensitive but below the maximum concentration at which it is Temperature Stable, said composition being characterized by a space filling floc of Spherulites.
Claim 13
Dependent Claim 163 words
A Pourable, Stable, fluid, detergent composition consisting essentially of: water; a concentration of from 5 to 30% by weight of the composition of Active Ingredients which consist essentially of (i) at least one non-ethoxylated anionic surfactant and (ii) at least one cosurfactant that is capable of forming stable foams, the proportions of (i) to (ii) being such that when a soluble Electrolyte is added progressively to an aqueous mixture containing said Active Ingredients at said concentration, a First Conductivity Minimum is reached at which the mixture is turbid and Stable; suspended Solid Builder, the total weight ration of Builder to Active Ingredients being from 1:1 to 4:1; and dissolved Electrolyte in a proportion sufficient to form a Stable composition corresponding to the Conductivity trough containing said First Conductivity Minimum, and greater than any concentration below which the composition is Shear Sensitive but below the maximum concentration at which it is Temperature Stable, said composition being characterized by a space filling floc of Spherulites.
Claim 14
Dependent Claim 10 words
A detergent composition in accordance with claim 1 containing Builder.
Claim 15
Dependent Claim 22 words
A detergent composition in accordance with claim 1 wherein said spherulites have an average size of about 0.1 to about 5 microns.
Claim 16
Dependent Claim 13 words
A detergent composition in accordance with claim 1 containing a suspended solid abrasive.
Claim 17
Dependent Claim 21 words
A detergent composition in accordance with claim 1 having a Yield Point of from 1 to 15 dynes cm -2 .
Claim 18
Dependent Claim 43 words
A detergent composition in accordance with claim 1 which separates on centrifuging at 800 G for 17 hours at 25° C. into a Solid Layer and a liquid layer containing from about 60% to about 90% of the total weight of Active Ingredients.
Claim 19
Dependent Claim 16 words
A detergent composition in accordance with claim 1 having a Payload greater than 32% by weight.
Claim 20
Dependent Claim 28 words
A detergent composition in accordance with claim 1 which is Non-Lamellar and does not form more than one liquid layer on centrifugation at 20,000 G for 90 minutes.
Claim 21
Dependent Claim 35 words
A detergent composition in accordance with claim 12 in which said builder is selected from the group consisting of alkali metal condensed phosphates, phosphonates, alkali metal carbonates, silicates, zeolites, nitrilotriacetates, citrates, ethylenediamine tetraacetates, and polycarboxylates.
Claim 22
Dependent Claim 20 words
A detergent composition in accordance with claim 19 wherein said builder is present at least in part as suspended solid.

References Cited (Backward Citations)

GB948617A Cited
US4299740A Cited
GB2031455A Cited
EP0079646A2 Cited
US4537708A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-10-20 1990-04-21 1990-10-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-10-20 1994-04-21 1994-10-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-10-20 1998-04-21 1998-10-21 $7700.00 Window Closed / Lapsed

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