COMPACT FLUID LAUNDRY DETERGENT COMPOSITION

• US 20110061174A1
• Filed: 09/14/2010
• Published: 03/17/2011
• Est. Priority Date: 09/14/2009
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Bouilliche, Myriam, Roger Burckett-St. Laurent, James Charles Theophile, Vandenberghe, Frederik, Boutique, Jean-Pol
• Granted Patent: US 8,940,677 B2
• Time in Patent Office: Days
• US Class Current: 8/137
• CPC Class Codes: C11D 1/02 Anionic compounds C11D1/002, C11D1/004, C11D1/008 take precedence
• CPC Class Codes: C11D 1/29 Sulfates of polyoxyalkylene ethers
• CPC Class Codes: C11D 1/83 Mixtures of non-ionic with anionic compounds
• CPC Class Codes: C11D 1/94 Mixtures with anionic, cationic or non-ionic compounds
• CPC Class Codes: C11D 17/0026 Structured liquid compositions, e.g. liquid crystalline phases or network containing non-Newtonian phase
• CPC Class Codes: C11D 17/046 Insoluble free body dispenser
• CPC Class Codes: C11D 3/2086 Hydroxy carboxylic acids-salts thereof
• CPC Class Codes: C11D 3/2093 Esters; Carbonates
• CPC Class Codes: C11D 3/30 Amines; Substituted amines ; Quaternized amines
• CPC Class Codes: C11D 3/3723 Polyamines or polyalkyleneimines
• CPC Class Codes: C11D 3/386 Preparations containing enzymes , e.g. protease or amylase
• CPC Class Codes: C11D 3/40 Dyes ; Pigments
• CPC Class Codes: C11D 3/42 Brightening agents ; Blueing agents
• CPC Class Codes: C11D 3/43 Solvents

Abstract

Compact liquid or gel-form laundry detergent compositions processes for manufacturing such compositions, wherein the compositions comprise at least a stabilization system against phase splitting having an alkanolamine and a coupling polymer component and preferably a stabilization system against phase splitting having an alkanolamine, a coupling polymer and a crystalline structurant component.

Claims

1. A process for manufacturing a concentrated aqueous liquid or gel-form laundry detergent comprising at least 10% of at least one anionic nonsoap surfactant;

at least 0.1% of other surfactants such that the total surfactant level is at least 20% by weight of said detergent; and

no more than 15% organic nonaminofunctional solvent by weight of said detergent;

said process comprising in any order (i) at least one step of formulating said detergent with an alkanolamine;

(ii) at least one step of formulating said detergent with a coupling polymer; and

(iii) at least one step of formulating said detergent with a laundering adjunct selected from detergent-active enzymes, textile optical brighteners and fabric-hueing dyes.

2. The process according to claim 1 wherein said coupling polymer is at a level of from 0.1% to 5% by weight of said detergent and is selected from the group of water-soluble, polar amphiphilic copolymers having an aliphatic backbone comprising at least two nitrogen atoms to which backbone are connected at least two side-chains comprising poly(ethoxylate) moieties.

3. The process according to claim 2 further comprising a step (iv) in any order with respect to steps (i), (ii) and (iii) of formulating into said detergent from 0.05% to 2%, by weight of said detergent, of a crystalline structurant.

4. The process according to claim 3 wherein said crystalline structurant is hydrogenated castor oil and wherein said alkanolamine is selected from monoethanolamine;

diethanolamine;

triethanolamine;

triisopropanolamine and mixtures thereof.

5. A packaged aqueous laundry detergent composition comprising:

(I) a package capable of variable dose delivery, said package preferably being equipped with a pretreating spout,

(II) a label affixed with dosing instructions recommending a dose per wash in an automatic laundry washing machine of no more than 50 ml; and

(III) said detergent;

wherein said detergent comprises by weight percentage from about 25% to about 55% by weight of said detergent of total surfactant, said surfactant including at least an anionic nonsoap surfactant and a nonionic surfactant at a ratio by weight of from 1;

2 to about 100;

0; and

said detergent comprises a stabilization system against phase splitting, said stabilization system comprising;

(a) alkanolamine;

(b) crystalline structurant; and

(c) coupling polymer;

wherein said detergent has an aqueous pH at 5% in water of from 6 to 9 and said detergent has a pour viscosity of greater than about 1000 centipoises at 20 s<sup>−

1</sup> and a low shear viscosity of greater than about 100,000 centipoises at 0.01 s<sup>−

1</sup>.

6. The aqueous laundry detergent composition according to claim 5 wherein said coupling polymer is present at a level of from 0.1% to 5% by weight of said detergent and said coupling polymer is characterized by (i) an aliphatic backbone comprising at least two nitrogen atoms to which backbone are connected (ii) at least two side-chains comprising poly(alkoxylate) moieties.

7. The aqueous laundry detergent composition according to claim 6 further comprising from 2% to not more than 15% of a non-aminofunctional organic solvent.

8. The aqueous laundry detergent composition according to claim 7 wherein said non-aminofunctional organic solvent comprises at least two alkanols other than methanol or ethanol.

9. The laundry detergent composition according to claim 7, wherein said alkanolamine is selected from:

monoethanolamine;

diethanolamine;

triethanolamine;

triisopropanolamine and mixtures thereof.

10. The laundry detergent composition according to claim 9, wherein said coupling polymer is selected from polymers having molecular weight below about 110,000 and comprising an aliphatic backbone comprising at least two nitrogen atoms to which backbone are connected (ii) at least two side-chains comprising poly(alkoxylate) moieties, and wherein said poly(alkoxylate) moieties consist essentially of poly(ethoxylate) moieties.

13. A method of laundering fabric comprising the steps of:

a. placing said laundry detergent composition of claim 5 into water in an automatic clothes laundering machine to a concentration of from about 20 to 50 grams of composition per from 10 to 70 litres of water to create a wash liquor; and

b. adding textiles to said wash liquor.

14. The method of claim 13 wherein from about 0.01 kilograms to about 2 kilograms of fabric is added to from about 10 liters to about 20 liters of said wash liquor.

15. The method of claim 14 wherein said wash liquor is unheated or is heated to a temperature of no more than 40 deg. C.

11. A laundry detergent composition comprising by weight percentage:

a. from about 15% to about 30% anionic surfactant provided that at least 1% of said anionic surfactant is an alkyl(polyalkoxy)sulfate;

b. from about 5% to about 15% nonionic surfactant;

d. from about 0.1% to about 7% citric acid, chelants or mixtures thereof;

e. from about 2% to about 15% organic non-aminofunctional solvent;

f. from about 0.05% to about 1.5% hydrogenated castor oil;

g. from about 1% to about 15% alkanolamine; and

h. from about 0.1% to about 5% coupling polymer; and

i. from about 5% to no more than about 35% of water;

said detergent having a pour viscosity of greater than about 1000 centipoises at 20 s<sup>−

1</sup> and a low shear viscosity of greater than about 100,000 centipoises at 0.01 s<sup>−

1</sup>.

12. The laundry detergent composition of claim 11, further comprising up to about 15% of fatty acid.