Liquid detergent composition comprising cellulosic polymers and cellulase

• US 10,457,898 B2
• Filed: 09/07/2017
• Issued: 10/29/2019
• Est. Priority Date: 09/07/2016
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Pickering, Carly, Brooker, Alan Thomas, Somerville Roberts, Nigel Patrick, Ure, Colin
• Primary Examiner(s): Mruk, Brian P
• Application Number:
  US15/697,478
• Publication Number:
  US 20180066212A1
• Time in Patent Office: 782 Days
• CPC Class Codes: C11D 1/12 Sulfonic acids or sulfuric acid esters; Salts thereof
• CPC Class Codes: C11D 17/0004 Non aqueous liquid compositions comprising insoluble particles
• CPC Class Codes: C11D 3/2003 Alcohols; Phenols
• CPC Class Codes: C11D 3/222 Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
• CPC Class Codes: C11D 3/225 etherified, e.g. CMC
• CPC Class Codes: C11D 3/227 with nitrogen-containing groups
• CPC Class Codes: C11D 3/30 Amines; Substituted amines ; Quaternized amines
• CPC Class Codes: C11D 3/38636 containing enzymes other than protease, amylase, lipase, cellulase, oxidase or reductase
• CPC Class Codes: C11D 3/38645 containing cellulase

Abstract

Liquid laundry detergent compositions comprising a first and a second cellulosic polymer and a cellulase. Related methods.

Claims

1. A liquid laundry detergent composition comprising:

a. between about 0.0001% and about 0.1% by weight of the liquid laundry detergent composition of a cellulase;

b. between about 0.05% and about 3% by weight of the liquid laundry detergent composition of a first cellulosic polymer, wherein the first cellulosic polymer is a cationically modified cellulosic polymer;

c. between about 0.05% and about 3% by weight of the liquid laundry detergent composition of a second cellulosic polymer wherein the second cellulosic polymer is a hydrophobically modified carboxymethyl cellulose having a degree of substitution (DS) of from about 0.01 to about 0.99 and a degree of blockiness (DB) such that either DS+DB is of at least about 1.00 and/or DB+2DS-DS2 is at least about 1.20.

2. The liquid laundry detergent composition according to claim 1, wherein the first cellulosic polymer is selected from cationically modified hydroxyethyl cellulose, cationically modified hydroxypropyl cellulose, cationically and hydrophobically modified hydroxyethyl cellulose, cationically and hydrophobically modified hydroxypropyl cellulose, or a mixture thereof.

3. The liquid laundry detergent composition according to claim 2, wherein the first cellulosic polymer comprises one or more hydrophobic groups bound to the polymer and wherein the one or more hydrophobic groups can be independently selected from C1-C32 alkyl;

C1-C32 substituted alkyl, C5-C32 alkylaryl, or C5-C32 substituted alkylaryl, (poly)alkoxy C1-C32 alkyl or (poly)alkoxy substituted C1-C32 alkyl or mixtures thereof.

4. The liquid laundry detergent composition according to claim 1 comprising between about 0.1% and about 2% by weight of the liquid laundry detergent composition of the first cellulosic polymer.

5. The liquid laundry detergent composition according to claim 1 comprising between about 0.1% and about 2% by weight of the liquid laundry detergent composition of the second cellulosic polymer.

6. The liquid laundry detergent composition according to claim 1 comprising between about 0.0002% and about 0.05% by weight of the liquid laundry detergent composition of the cellulase.

7. The liquid laundry detergent composition according to claim 1, wherein the cellulase comprises a fungal or microbial-derived endoglucanases, or mixture thereof, exhibiting endo-beta-1,4-glucanase activity.

8. The liquid laundry detergent composition according to claim 1 further comprising a non-soap anionic surfactant.

9. The liquid laundry detergent composition according to claim 8, wherein the non-soap surfactant is selected from linear alkylbenzene sulphonate, alkyl sulphate, alkoxylated alkyl sulphate or a mixture thereof.

10. The liquid laundry detergent composition according to claim 9 wherein the non-soap surfactant is neutralised with an amine, selected from monoethanolamine, diethanolamine, triethanolamine or a mixture thereof.

11. The liquid detergent composition according to claim 8 comprising

a. between about 5% and about 30% by weight of the liquid laundry detergent composition of the amine neutralised C12-14 linear alkylbenzene sulphonate, wherein the amine is an alkanolamine, selected from monoethanolamine, diethanolamine, triethanolamine or a mixture thereof, or

b. between about 5% and about 35% by weight of the liquid laundry detergent composition of an amine neutralised C12-14 linear alkylbenzene sulphonate, wherein the amine is an alkanolamine, selected from monoethanolamine, diethanolamine, triethanolamine or a mixture thereof.

12. The liquid laundry detergent composition according to claim 1 further comprising a non-ionic surfactant, wherein the liquid laundry detergent composition comprises between about 1% and about 25% by weight of the liquid laundry detergent composition of the non-ionic surfactant.

13. The liquid laundry detergent composition according to claim 12 wherein the non-ionic surfactant is selected from a fatty alcohol alkoxylate, an oxo-synthesised fatty alcohol alkoxylate, Guerbet alcohol alkoxylates, alkyl phenol alcohol alkoxylates or a mixture thereof.

14. The liquid laundry detergent composition according to claim 1 comprising between about 1.5% and about 20% by weight of the liquid detergent composition of soap.

15. The liquid detergent composition according to claim 14, wherein the soap is an amine neutralized fatty acid salt, wherein the amine is an alkanolamine selected from monoethanolamine, diethanolamine, triethanolamine or a mixture thereof.

16. A water-soluble unit dose article comprising a water-soluble film and a liquid detergent composition according to claim 1.

17. The water-soluble unit dose article according to claim 16 wherein the water-soluble unit dose article comprises at least two compartments.

18. The water-soluble unit dose article according to claim 17, wherein a first compartment comprises the first cellulosic polymer and the second cellulosic polymer, and a second compartment comprises the cellulase.

19. A method of washing comprising the steps of adding the liquid laundry detergent composition according to claim 1 to sufficient water to dilute the liquid laundry detergent composition by a factor of at least about 300-fold to create a wash liquor and contacting fabrics to be washed with said wash liquor.