LOW SURFACTANT, HIGH CARBONATE LIQUID LAUNDRY DETERGENT COMPOSITIONS WITH IMPROVED SUDS PROFILE

• US 20150337236A1
• Filed: 05/11/2015
• Published: 11/26/2015
• Est. Priority Date: 05/20/2014
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: TANG, Ming, CHEN, Qing, NIU, Liyuan, XU, Bing
• Granted Patent: US 9,340,753 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C11D 1/143 Sulfonic acid esters
• CPC Class Codes: C11D 1/146 Sulfuric acid esters
• CPC Class Codes: C11D 1/22 derived from aromatic compounds
• CPC Class Codes: C11D 1/37 Mixtures of compounds all of which are anionic
• CPC Class Codes: C11D 1/62 Quaternary ammonium compounds
• CPC Class Codes: C11D 1/65 Mixtures of anionic with cationic compounds
• CPC Class Codes: C11D 1/72 Ethers of polyoxyalkylene glycols
• CPC Class Codes: C11D 1/75 Amino oxides
• CPC Class Codes: C11D 1/83 Mixtures of non-ionic with anionic compounds
• CPC Class Codes: C11D 2111/12 Soft surfaces, e.g. textile
• CPC Class Codes: C11D 3/10 Carbonates ; Bicarbonates
• CPC Class Codes: C11D 3/2041 Dihydric alcohols
• CPC Class Codes: C11D 3/2065 Polyhydric alcohols
• CPC Class Codes: C11D 3/2068 Ethers
• CPC Class Codes: C11D 3/43 Solvents

Abstract

The present invention relates to a stable liquid laundry detergent composition containing low levels of a C₁₀-C₂₀ linear alkyl benzene sulphonate surfactant in combination with high levels of a water-soluble alkali metal carbonate for achieving improved suds profile.

Claims

1. A liquid laundry detergent composition comprising:

(a) from 5 wt % to 20 wt % of a C₁₀-C₂₀ linear alkyl benzene sulphonate (LAS);

(b) from 2 wt % to 10 wt % of a water-soluble alkali metal carbonate;

(c) from 5 wt % to 40 wt % of one or more solvents selected from the group consisting of diols and combinations thereof; and

(d) from 4 wt % to 20 wt % of glycerin,

wherein said liquid laundry detergent composition is substantially free of alkylethoxy sulfates (AES).

2. The liquid laundry detergent composition of claim 1, comprising from 8 wt % to 18 wt % of LAS.

3. The liquid laundry detergent composition of claim 1, wherein the LAS is selected from the group consisting of monoethanolamine LAS, 2-aminopropanol LAS, monoisopropanolamine LAS, 1-amino-3-propanol LAS, and combinations thereof.

4. The liquid laundry detergent composition of claim 1, comprising from 4 wt % to 7 wt % of the water-soluble alkali metal carbonate.

5. The liquid laundry detergent composition of claim 1, wherein the water-soluble alkali metal carbonate is selected from the group consisting of sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, and combinations thereof, and wherein the water-soluble alkali metal carbonate is preferably sodium carbonate and/or potassium carbonate, and more preferably sodium carbonate.

6. The liquid laundry detergent composition of claim 1, wherein the diols are selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, pentanediols, and combinations thereof, and preferably the one or more diols are selected from the group consisting of ethylene glycol, propylene glycol, diethylene glycol, and combinations thereof.

7. The liquid laundry detergent composition of claim 1, comprising from 3 wt % to 30 wt % of one or more diols selected from the group consisting of ethylene glycol, propylene glycol, diethylene glycol, and combinations thereof, and optionally from 6 wt % to 18 wt % of glycerin.

8. The liquid laundry detergent composition of claim 1, further comprising from 0.1 wt % to 15 wt % of a C₈-C₁₈ linear or branched alkyl sulfate (AS), and preferably said liquid laundry detergent composition comprises from 0.5 wt % to 8 wt % of a C₁₀-C₁₆ linear or branched AS.

9. The liquid laundry detergent composition of claim 1, further comprising from 0.01 wt % to 2 wt % of a cationic surfactant selected from the group consisting of dimethyl hydroxyethyl lauryl ammonium chloride, trimethyl lauryl ammonium chloride, amido propyldimethyl amine, and combinations thereof, and preferably said liquid laundry detergent composition comprises from 0.1 wt % to 1 wt % of dimethyl hydroxyethyl lauryl ammonium chloride and/or trimethyl lauryl ammonium chloride.

10. The liquid laundry detergent composition of claim 1, further comprising from 0.01 wt % to 5 wt % of a nonionic surfactant selected from the group consisting of C₈-C₁₈ amine oxides, C₈-C₁₈ alcohol alkoxylates having an average degree of alkoxylation ranging from 1 to 20, and combinations thereof, and preferably said liquid laundry detergent composition comprises from 0.1 wt % to 2 wt % of a C₁₀-C₁₆ alkyl dimethyl amine oxide and/or from 0.1 wt % to 1 wt % of a C₁₂-C₁₄ alcohol ethoxylate having an average degree of ethoxylation ranging from 7 to 9.

11. The liquid laundry detergent composition of claim 1, having a total surfactant content of from 5 wt % to 30 wt %, preferably from 10 wt % to 25 wt %.

12. The liquid laundry detergent composition of claim 1, further comprising from 0.1 wt % to 10 wt % of an acid selected from citric acid, boric acid, and combinations thereof, and preferably said liquid laundry detergent composition comprises from 1 wt % to 5 wt % of citric acid and/or from 1 wt % to 3 wt % of boric acid.

13. The liquid laundry detergent composition of claim 1, further comprising from 0.1 wt % to 5 wt %, preferably from 0.5 wt % to 4 wt %, and more preferably from 0.7 wt % to 3 wt %, of one or more C₁₂-C₁₈ fatty acids or salts thereof.

14. The liquid laundry detergent composition of claim 1, having a pH value of from 8.5 to 13, preferably from 9 to 11.

15. Use of a liquid laundry detergent composition according to claims 1 for hand-washing fabrics to achieve optimized sudsing profile.

16. A liquid laundry detergent composition comprising:

(a) from 8 wt % to 18 wt % of a monoethanolamine LAS, monoisopropanolamine LAS, 1-amino-3-propanol LAS, and/or 2-aminopropanol LAS;

(b) from 4 wt % to 7 wt % of sodium carbonate;

(c) from 15 wt % to 35 wt % of propylene glycol;

(d) from 6 wt % to 18 wt % of glycerin; and

(e) from 0.7 wt % to 5 wt % of a C₁₀-C₁₆ linear or branched AS,

wherein said liquid laundry detergent composition is substantially free of alkylethoxy sulfates.

17. Use of a liquid laundry detergent composition according to claim 16 for hand-washing fabrics to achieve optimized sudsing profile.