COMPOSITIONS WITH ACYLISETHIONATE SURFACTANT AND METHODS OF USE

Abstract

A composition comprising: (a) an acyl isethionate surfactant; (b) a cationic polymer; and (c) a water insoluble benefit agent: wherein the composition comprises less than 3 wt % amphoteric or zwitterionic surfactants.

Claims

1. A composition comprising: (a) an acyl isethionate surfactant; (h) a cationic polymer; and (c) a water insoluble benefit agent: wherein the composition comprises less than 3 wt % amphoteric or zwitterionic surfactants.

2. The composition according to claim 1 wherein component (a) comprises one or more acyl isethionate surfactants selected from the group consisting of: a compound of formula R.sup.6COOCH.sub.2CH.sub.2SO.sub.3.sup.M.sup.+, compound of formula (I): ##STR00004## wherein R.sup.1 and R.sup.6 each independently represents a C.sub.4-36 substituted or unsubstituted hydrocarbyl group; each of R.sup.2, R.sup.3, R.sup.4 and R.sup.5 independently represents a hydrogen atom or a C.sub.1-4 alkyl group and wherein at least one of R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is not hydrogen and M.sup.+ represents a cation; and mixtures thereof.

3. The composition according to claim 2 wherein component (a) comprises a compound of formula (I).

4. The composition according to claim 1 wherein component (a) comprises one or more of sodium lauroyl methyl isethionate, sodium cocoyl methyl isethionate and sodium oleoyl methyl isethionate.

5. The composition according to claim 1 wherein component (a) comprises one or more of sodium methyl isethionate, sodium cocyl isethionate and sodium oleoyl isethionate.

6. The composition according to claim 2 which comprises at least 8 wt % of a compound of formula (I) and/or less than 2 wt % of a compound of formula R.sup.6COOCH.sub.2CH.sub.2SO.sub.3.sup.M.sup.+.

7. The composition according to claim 1 wherein component (h) is selected from cationic (or cationised) derivatives of guar gum or cationic (or cationised) derivatives of cellulose whereby the cationic group in each case is a quaternary ammonium group where each of the three alkyl groups not forming a link to the polymer hack bone can be, independently from one another, one to thirty carbon atoms in length.

8. The composition according to claim 1 wherein component (c) is a silicone compound.

9. The composition according to claim 1 wherein component (c) is selected from the group consisting of: dimethicone, dimethiconol and divinyldimethicone/dimethicone copolymer.

10. The composition according to claim 1 which comprises an amphoteric or zwitterionic surfactant.

11. The composition according to claim 1 which comprises no amphoteric or zwitterionic surfactant.

12. The composition according to claim 1 which comprises a coacervate.

13. A method of treating a material, the method comprising contacting the material with a composition comprising: (a) an acyl isethionate surfactant; (b) a cationic polymer; and (c) a water insoluble benefit agent; wherein the composition comprises less than 3 wt % amphoteric or zwitterionic surfactants.

14. The method according to claim 13 wherein the material is a keratinous material.

15. The method according to claim 14 wherein the material is human hair or animal hair.

16. A method of treating hair, method comprising the steps of; (i) wetting the hair; (ii) contacting the hair with a composition comprising (a) an acyl isethionate surfactant; (b) a cationic polymer; and (c) a water insoluble benefit agent; and (iii) rinsing the composition from the hair; wherein the composition comprises less than 3 wt % amphoteric or zwitterionic surfactants.

17. The method of treating hair, the method comprising the steps of: (x) providing a composition according to claim 1 which comprises a coacervate; and (y) contacting the composition with the hair.

Description

EXAMPLE 1

[0155] Hair shampoo formulations 1 and 2 shown in the table below were prepared according to the method shown. Clean bleached-hair tresses, each 18 cm in length and weighing 3 g (obtained from International Hair Importers, New York), were treated with 1 ml of shampoo according to the procedure given below and combing measurements were performed on them using a Dia-Stron MTT 175 with vertical stand and combing attachment set, attached to a personal computer with the Dia-Stron applications software installed. The averages of total work of combing for the shampoo treated tresses in the dry and the wet states were compared to the corresponding measurements for the control tresses which were not treated with the shampoos in the table below but just dipped in water. From this, the percentage reduction in the average total work of combing was calculated in each case. FIG. 1 shows the results of wet combing for shampoo formulation 1, according to the invention and comparative shampoo formulation 2. This shows that a sodium lauroyl methyl isethionate containing conditioning shampoo composition gave surprisingly superior wet combing improvement over a similar system which contained sodium laureth sulfate. FIG. 2 shows the dry combing results of shampoo formulation 1 and a market leading 2 in 1 shampoo based on sodium laureth sulfate and containing (inter alia) guar hydroxyproyl trimonium chloride and dimethicone.

Shampoo Formulation Compositions

[0156]

TABLE-US-00001 Amount in Formulation/% w/w * Shampoo Shampoo Ingredient (INCI name) Formulation 1 Formulation 2 Water qs to 100 qs to 100 Carbopol (RTM) Silk 100 0.60 0.60 (Carbomer) Iselux (RTM) LQ-CLR-SB 31.25 (10) (32%) (Sodium Lauroyl Methyl Isethionate) Steol SLES 2EO (27%) 37.04 (10) (Sodium Laureth Sulfate) Sodium Hydroxide qs to pH 7.0 (at qs to pH 7.0 (at this this addition stage) addition stage) Tego (RTM) Betain F50 6.58 (2.5) 6.58 (2.5) (37%) (Cocamidopropyl Betaine) Emulsil DME-504 3.00 3.00 (Dimethicone (and) Laureth-4 (and) Laureth-23) Aqua 20.00 20.00 Jaguar Excel (Guar 0.40 0.40 hydroxypropyltrimonium chloride) Opulyn PQG (Ethalkonium 1.00 1.00 chloride acrylate/HEMA/ styrene copolymer) Water 1.00 1.00 Euxyl K100 0.10 0.10 (Benzyl Alcohol, Methylchloroisothiazolinone, Methylisothiazolinone) Fragrance 0.50 0.50 Citric Acid qs to pH 5.9-6.1 qs to pH 5.9-6.1 (Final pH) (Final pH) * Numbers in brackets are active levels.

Method of Shampoo Formulation Preparation

[0157] 1. Slowly add the Jaguar Excel to water with stirring until all the Jaguar excel dispersed then add 4 drops of citric acid solution to swell the polymer and mix for further 5 mins. [0158] 2. In separate vessel, slowly add the Carbopol Silk 100 in the remainder of the water with stirring and stir for c. 45 mins until all the polymer is dispersed. [0159] 3. To the mixture from (2) above, slowly add the surfactants and mix until uniform. [0160] 4. Adjust the pH of the mixture from (3) above to pH 7.0 with 25% w/w sodium hydroxide solution. [0161] 5. Slowly add Tego Betain F50 to the mixture from (4) above and mix until uniform. [0162] 6. Slowly add the mixture from (1) above to the mixture from (5) above and mix until uniform. [0163] 7. Slowly add Emulsil DME-504 to the resulting mixture and stir until uniform. [0164] 8. Add the Opulyn PQG, the Euxyl K100 and the Fragrance and mix until uniform. [0165] 9. Adjust the pH of final formulation to 5.9-6.1 with 50% citric acid solution.

Method of Shampoo Application to the Hair Tresses and Combing Evaluation

[0166] 1. Wet the tress under warm tap water. [0167] 2. Apply 1 ml of the test formula to the hair tress and massage for 30 seconds. [0168] 3. Rinse the tress under the running water for 30 seconds. [0169] 4. Dry each tress using a hair dryer on a warm setting. [0170] 5. Hand comb each tress to remove any tangles. [0171] 6. Attach the top of the tress to the load cell of the Dia-Stron MTT 175 and place the hair into the teeth of the hard rubber comb attached to the moving bridge of the stand. [0172] 7. Perform the dry combing measurement. [0173] 8. Repeat the measurement/detangling procedure to produce five dry combing readings for each tress. (The result used is the average of the five readings). [0174] 9. Gently dip the tress in tap water three times and squeeze out excess water between the fingers down the length of the tress. [0175] 10. Perform the wet combing measurement as above to produce five wet combing readings.

[0176] (The result used is the average of the five readings).