Fabric conditioning composition

Patent metadata

Field	Value
Publication number	US-9441188-B2
Application number	US-201214649981-A
Country	US
Kind code	B2
Filing date	Dec 11, 2012
Priority date	Dec 11, 2012
Publication date	Sep 13, 2016
Grant date	Sep 13, 2016

Abstract

A fabric conditioning composition comprising an emulsion of particles in an aqueous vehicle, the particles comprising (a) fatty acid triglyceride, and (b) a water swellable cationic polymer.

First claim

We claim:

1. A fabric conditioning composition comprising an emulsion of particles in an aqueous vehicle, the particles comprising (a) fatty acid triglyceride, and (b) a water swellable cationic polymer,
wherein the water swellable cationic polymer is at least one of (i) a cationic linear copolymer that is derived from the polymerization of acrylic acid and/or methacrylic acid, or a salt of acrylic acid and/or methacrylic acid, and acrylamide or methacrylamide, said copolymer having a molecular weight of from about 10,000 to about 30 million; and (ii) a cationic cross-linked polymer that is derived from the polymerization of from5 to 100 mole percent of cationic vinyl addition monomer, from 0 to 95 mole percent of acrylamide, and from 70 ppm to 300 ppm of a difunctional vinyl addition monomer cross linking agent or a mixture of polymers (i) and (ii).

2. The composition of claim 1 , wherein the fatty acid triglyceride is tallow triglyceride.

3. The composition of claim 1 , wherein the fatty acid triglyceride has a degree of saturation of from 10 to 85%.

4. The composition of claim 1 , wherein the fatty acid triglyceride has an iodine value of from 20 to 140.

5. The composition of claim 1 , wherein the fatty acid triglyceride is present in an amount of 0.01 to 35% by weight of the composition.

6. The composition of claim 1 , wherein the water swellable cationic polymer has a charge density of 4 to 5 meq/g.

7. The composition of claim 1 , wherein the cationic linear copolymer (i) is derived from the polymerization of a salt of methacrylic acid and acrylamide.

8. The composition of claim 1 , wherein in the polymerization of the cationic linear copolymer (i) the salt comprises a quaternary ammonium salt of an acrylate or methacrylate.

9. The composition of claim 1 , wherein the cationic linear copolymer (i) has a molecular weight of from about 2 million to about 3 million.

10. The composition of claim 1 , wherein the cationic cross-linked polymer (ii) is derived from the polymerization using 75 to 200 ppm of the cross-linking agent.

11. The composition of claim 1 , wherein the cationic cross-linked polymer (ii) is derived from the polymerization of a salt of methacrylic acid and acrylamide.

12. The composition of claim 11 , wherein in the polymerization of the cationic cross-linked polymer (ii) the salt comprises a quaternary ammonium salt of an acrylate or methacrylate.

13. The composition of claim 1 , wherein in the polymerization of the cationic cross-linked polymer (ii), the polymer prior to cross-linking has a molecular weight of from about 2 million to about 3 million.

14. The composition of claim 1 , wherein in the polymerization of the cationic cross-linked polymer (ii), the cross-linker comprises methylene bis acrylamide.

15. The composition of claim 1 , wherein the composition comprises from 2.5 to 7.5 wt % fatty acid triglyceride, based on the weight of the composition.

16. The composition of claim 1 , wherein the composition comprises from 0.05 to 0.5 wt % of the water swellable cationic polymer, based on the weight of the composition.

17. The composition of claim 1 , wherein the weight ratio of fatty acid triglyceride to the water swellable cationic polymer is from 30:1 to 20:1.

18. The composition of claim 1 , wherein the particles have an average particle size of from 3 to 10 microns.

19. The composition of claim 1 , wherein the particles have an average particle size of from 0.1 to 2 microns.

20. The composition of claim 1 , wherein the emulsion particles of the fatty acid triglyceride and the water swellable cationic polymer constitute the sole fabric conditioning component in the composition.

21. The composition of claim 1 , wherein the composition comprises no chelating compound.

22. A method of producing a fabric conditioning composition according to claim 1 , the method comprising the steps of:
a) providing water at a temperature of from 30 to 65° C.;
b) dispersing the fatty acid triglyceride and the water swellable cationic polymer, either together or independently in any order, into the water; and
c) mixing the resultant dispersion to produce the composition in which the fatty acid triglyceride is dispersed as an aqueous emulsion, and the aqueous emulsion comprises particles including a mixture of the fatty acid triglyceride and the water swellable cationic polymer.

23. The method of claim 22 , wherein in step a) the water is at a temperature of from 40 to 60° C.

24. The method of claim 22 , wherein in step c) the mixing is carried out so that the particles have an average particle size of from 3 to 10 microns.

25. The method of claim 22 , wherein in step c) the mixing is carried out for a period of from 1 to 4 minutes using a shearing mixer to form the emulsion.

26. The method of claim 22 , wherein in step b) an oil phase comprising a mixture of the fatty acid triglyceride and the water swellable cationic polymer is dispersed into the water in the form of a molten liquid.

27. The method of claim 26 , wherein the molten liquid includes fragrance.

28. The method of claim 22 , the method further comprising the step of:
d) homogenizing the aqueous emulsion formed in step c) by passing the emulsion through a homogenizer at a pressure of from 2.1× 10 7 to 1.03× 10 8 Pa (3,000 to 15,000 psi) to form a homogenized emulsion.

29. The method of claim 28 , wherein the homogenizing step d) is carried out at a pressure of from 3.4× 10 7 to 8.9× 10 7 Pa (5,000 to 13,000 psi).

30. The method of claim 28 , wherein the homogenized emulsion comprises particles having an average particle size of from 0.1 to 2 microns.

31. The method of claim 28 , wherein in the homogenizing step d) the emulsion is at a temperature of from 30 to 75° C.

32. The method of claim 28 , wherein no chelating agent is mixed with the triglyceride prior to addition to water.

33. The method of claim 22 wherein the composition further comprises a fragrance and the method provides fragrance delivery onto the fabric.

Assignees

• Colgate Palmolive Co

Inventors

• Schramm Jr Charles J
• Truong Katie

Classifications

• C11D17/0017

  Multi-phase liquid compositions · CPC title

• C11D3/2093

  Esters; Carbonates · CPC title

• C11D1/521

  Carboxylic amides (R1-CO-NR2R3), where R1, R2 and R3 are alkyl or alkenyl groups · CPC title

• C11D3/001 Primary

  Softening compositions · CPC title

• C11D3/3773

  in liquid compositions · CPC title