Detergent compositions

Abstract

A surfactant component comprising a compound of formula (I): (I) wherein R.sup.1 is a C.sub.5 to C.sub.39 alkyl or alkenyl group and R.sup.2 is a group of formula (a) wherein one of W, X, Y and Z is a covalent bond and the remaining groups are independently selected from H, M, SO.sub.3M and a further group of formula R.sup.1CO provided at least one of W, X, Y and Z is SO.sub.3M; and each M is independently a hydrogen ion, an ammonium ion or a metal ion. ##STR00001##

Claims

1. A composition comprising one or more compounds of formula (I): ##STR00031## wherein R.sup.1 is a C.sub.5 to C.sub.39 alkyl or alkenyl group and R.sup.2 is a group of formula (a) ##STR00032## wherein one of W, X, Y and Z is a covalent bond and the remaining groups are independently selected from H, M, SO.sub.3M and a further group of formula R.sup.1CO provided at least one of W, X, Y and Z is SO.sub.3M; and each M is independently a hydrogen ion, an ammonium ion or a metal ion; and one or more of sodium lauroyl methyl isethionate sodium cocoyl methyl isethionate or sodium oleoyl methyl isethionate.

2. The composition according to claim 1 which is a personal care composition.

3. The composition according to claim 2 selected from shampoo, a shower gel, a toothpaste, a moisturiser, a shaving foam or gel, a hand wash, a body wash, a bath foam, a bubble bath, a soap bar, a liquid soap, a toilet bar, a facial cleanser, a skin cleanser and a make-up remover.

4. The composition according to claim 1 which is of low irritancy to the skin and/or eyes.

5. The composition according to claim 1 which is high foaming.

6. The composition according to claim 1 which comprises a compound of formula (III): ##STR00033## and/or a compound of formula (IV): ##STR00034##

7. The composition according to claim 1 wherein R.sup.1 is a C.sub.9 to C.sub.15 alkyl or alkenyl group or mixtures thereof.

8. A method of cleansing the skin and/or hair, the method comprising: wetting the skin and/or hair: applying a composition comprising one or more compounds of formula (I) to the skin and/or hair; said compound having the formula: ##STR00035## wherein R.sup.1 is a C.sub.5 to C.sub.19 alkyl or alkenyl group and R.sup.2 is a group of formula (a) ##STR00036## wherein one of W, X, Y or Z is a covalent bond and the remaining groups are independently selected from H, M. SO.sub.3M or R.sup.1CO provided at least one of W, X, Y or Z is SO.sub.3M; and each M is independently a hydrogen ion, an ammonium ion or a metal ion; and rinsing the composition from the skin and/or hair, wherein when used in the method, composition produces tight, long lasting foam having a reasonable foam volume.

9. The method according to claim 8, wherein the one or more compounds comprise a compound of formula. (III): ##STR00037## and/or a compound of formula ##STR00038##

10. The method according to claim 8, wherein R.sup.1 is a C.sub.9 to C.sub.15 alkyl or alkenyl group or mixtures thereof.

11. The method according to claim 8, wherein said composition further comprises one or more surfactants selected from the group consisting of: anionic, cationic, non ionic and amphoteric surfactants.

12. The method according to claim 8. wherein said composition is in the form of a shampoo, a shower gel, a shaving foam or gel, a hand wash, a body wash, a bath foam, a bubble bath, a soap bar, a liquid soap, a toilet bar, a facial cleanser, a skin cleanser or a make-up remover.

13. The method according to claim 8, wherein said composition is of low irritancy to the skin and/or eyes.

14. The method according to claim 8, Wherein said composition further comprises a surfactant selected from the group consisting of: alkyl or alkenyl sulfates, alkyl or alkenyl ether sulfates, taurates, isethionates, acyl substituted amino acids, sarcosinates and sulfosuccinates.

15. The method according to claim 8, wherein said composition further comprises one or more isethionate selected from the group consisting of: sodium lauroyl methyl isethionate, sodium cocoyl methyl isethionate and sodium oleoyl methyl isethionate.

Description

EXAMPLE 1

Synthesis of Ascorbyl Monolaurate (Comparative)

(1) 7.5 g Ascorbic acid (42 mmol) and 0.3 g 4-Dimethylaminopyridine were weighed into a 500 ml beaker. 250 ml de-ionised water was added and reaction stirred. The pH was increased to 9.5 using 50% NaOH and reaction cooled to 0 C. 9.28 g Lauroyl chloride (42 mmol) was added dropwise over 10 minutes whilst the pH was maintained at 9.5-10. After full addition the reaction was allowed to warm to room temperature and left to stir for 2 hr. The pH was reduced to 2 using conc. HCl acid to precipitate the product. The white solid was filtered off and dried. Yield was 87%.

EXAMPLE 2

Synthesis of Ascorbyl Monolaurate Sulphate Solution

(2) 1.03 g ascorbyl monolaurate (2.8 mmol) was weighed into 100 ml beaker and 50 ml ether added. 0.33 g Chlorosulphonic acid (2.8 mmol) was added and the reaction stirred for 1 h. The reaction was then purged for 15 minutes with N.sub.2. 20 ml de-ionised water and 4 g NaOH (50 wt %) were added. The ether was allowed to evaporate.

EXAMPLE 3

Comparative Foam Heights

(3) A 1 wt % surfactant solution was prepared. The foam heights were measured using an in house foaming test and the results were compared with those obtained using a composition comprising 1 wt % Sodium Laureth Sulphate (3EO) [SLES]. The percentage increases in foam compared to SLES are shown in table 1.

(4) TABLE-US-00001 Relative foam height compared to SLES as % Sodium Laureth Sulphate (3EO) 100 Compound 1 - Lauroyl Ascorbic 32 acid (comparative) Compound 2 - Lauroyl Ascorbate 105 Sulphated

EXAMPLE 4

(5) An in house qualitative test based on the Zein test was used to assess irritancy/mildness of a 1% surfactant solution. In this test, Compound 2 was found to be milder than many commercially available personal care surfactants including Sodium Laureth Sulfate (3EO) [SLES].