LOW PH COMPOSITION COMPRISING SPECIFIC PRESERVATIVE SYSTEMS

• US 20170333321A1
• Filed: 11/12/2015
• Published: 11/23/2017
• Est. Priority Date: 11/18/2014
• Status: Active Grant

• Current Assignee: Conopco, Inc. (Unilever PLC)
• Original Assignee: Conopco, Inc. (Unilever PLC)
• Inventors: Carnali, Joseph Oreste, SHAH, Pravin, LIU, Hongjie
• Granted Patent: US 10,278,908 B2
• Time in Patent Office: Days
• CPC Class Codes: A61K 2800/262 Transparent; Translucent
• CPC Class Codes: A61K 8/44 Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations
• CPC Class Codes: A61Q 5/02 Preparations for cleaning the hair

Abstract

The present invention relates to compositions comprising salt of acyl glutamate as primary surfactant or primary anionic surfactant and which further comprise specific preservative systems.

Claims

1. Cleansing composition comprising:

a) 0.5 to 35% by wt. total composition of a surfactant system comprising anionic surfactant comprising salt of acyl glutamate, wherein salt of acyl glutamate is present at 50% or more of all surfactant present,

and wherein the surfactant system further comprises 0 to 20% by wt. total composition of a co-surfactant wherein co-surfactant are surfactants which are not anionic, selected from the group consisting of nonionic, cationic, amphoteric surfactants and mixtures thereof;

b) 0% to 30% by wt. total composition water-soluble or oil-soluble skin or hair benefit agent;

c) 0.01 to 1% of an organic acid selected from the group of organic acids having pKa between about 4.0 and 5.5; and

d) water

wherein pH is about 5.1 or below.

2. A composition according to claim 1, wherein the composition is clear, wherein clear is defined by absorbance value of 1.0 or below when measured at wavelength of 550 nm.

3. A composition according to claim 1, wherein salt of glutamate comprises a mixture of C₁₀ and C_coco glutamate, wherein the mixture of C₁₀ and C_coco preferably has a C₈-C₁₀ chain length distribution wherein C₈-C₁₀ is present in an amount of more than 13%.

4. A composition according to any one of the preceding claims, wherein salt of glutamate comprises a mixture of C₁₀ and C₁₂ glutamate.

5. A composition according to any one of the preceding claims, comprising 0.5 to 15% co-surfactant.

6. A composition according to any one of the preceding claims, wherein co-surfactant comprises an amphoteric surfactant.

7. A composition according any one of the preceding claims, further comprising 0.1% to 5% by wt. benefit agent.

8. A composition according to any one of the preceding claims, wherein said benefit agent is an oil-soluble emollient or moisturizing oil.

9. A composition according to any one of the preceding claims, wherein pH of composition is about 3.0 to about 5.0.

10. A composition according to claim 9 wherein pH is about 3.5 to about 5.0.

11. A composition according to any one of the preceding claims, additionally comprising structurant.

12. A composition according to claim 11 which comprises a structurant having formula:

13. An composition formed from the combination of the composition of claim 1 with immiscible benefit agent.

14. A composition according to claim 1 wherein salt of acyl glutamate is selected from the group consisting of C₁₀, C₁₂ and C_coco glutamate and mixtures thereof, co-surfactant is amphoacetate and ratio of amphoacetate to salt of glutamate is 1/7 and higher.

15. A composition according to claim 14, wherein ratio is 1/7 to 1/1.

16. A composition according to any one of the preceding claims, wherein salt of glutamate is selected from the group consisting of C₁₀, C₁₂ and C_coco glutamate and mixtures thereof, co-surfactant is selected from the group consisting of betaine, sultaine and a mixtures thereof and ratio of co-surfactant to glutamate 1/19 and higher.

17. A composition according to claim 16, wherein ratio is 1/19 to 1/1.