Surfactant and Composition

Patent metadata

Field	Value
Publication number	US-2022226217-A1
Application number	US-202217713804-A
Country	US
Kind code	A1
Filing date	Apr 5, 2022
Priority date	Oct 10, 2019
Publication date	Jul 21, 2022
Grant date	—

Abstract

The present invention provides a surfactant that has good foaming, foam quality, and solubility even having a pH equivalent to that of the skin, which is weakly acidic, has a low viscosity with high handleability, and can be useful in a product such as a personal care product, for example, a cosmetic. More specifically, the present invention provides a surfactant including an N-monounsaturated acyl acidic amino acid or a salt thereof, wherein the N-monounsaturated acyl is an acyl having 10 to 16 carbon atoms.

First claim

1 . A surfactant comprising an N-monounsaturated acyl acidic amino acid or a salt thereof, wherein the N-monounsaturated acyl has 10 to 16 carbon atoms.

2 . The surfactant according to claim 1 , wherein the N-monounsaturated acyl acidic amino acid is a compound represented by the following (A):

wherein 1 is an integer of 1 or 2, and m is an integer of 0 to 6.

3 . The surfactant according to claim 1 , wherein the N-monounsaturated acyl acidic amino acid is in a cis conformation.

4 . The surfactant according to claim 1 , wherein the N-monounsaturated acyl acidic amino acid is N-monounsaturated acylglutamic acid.

5 . A composition comprising:
component (A): an N-monounsaturated acyl acidic amino acid(s) or a salt(s) thereof, wherein the N-monounsaturated acyl has 10 to 16 carbon atoms; and component (B): an N-saturated acyl acidic amino acid(s) or a salt(s) thereof.

6 . The composition according to claim 5 , wherein the component (A) comprises:
(A1) an N-monounsaturated acyl acidic amino acid or a salt thereof, wherein the N-monounsaturated acyl has 12 carbon atoms; and (A2) an N-monounsaturated acyl acidic amino acid or a salt thereof, wherein the N-monounsaturated acyl has 10, 14, or 16 carbon atoms.

7 . The composition according to claim 5 , wherein the component (B) comprises:
(B1) an N-lauroyl acidic amino acid and/or a salt thereof.

8 . The composition according to claim 7 , wherein the component (B) further comprises
(B2) an N-saturated acyl acidic amino acid or a salt thereof, wherein the N-saturated acyl has 8, 10, 14, 16 carbon atoms.

9 . The composition according to claim 5 , further comprising: (C) an N-unsaturated fatty acid or a salt thereof.

10 . The composition according to claim 5 , further comprising: (D) a water-soluble medium.

11 . The composition according to claim 5 , wherein a weight ratio of component (A) to the total of component (A) and component (B) (A/(A+B)) is 0.001 to 1.

12 . The composition according to claim 5 , having a pH of 3 to 9.

13 . The composition according claim 5 , having a viscosity of 1.5 Pa·s or less.

14 . The composition according to claim 5 , which is formulated for external use on the skin.

15 . The composition according to claim 5 , which is a cleanser composition.

Assignees

• Ajinomoto Kk

Inventors

• Kosono Shuhei

Classifications

• C07C233/49 Primary

  having the carbon atom of the carboxamide group bound to a carbon atom of an acyclic unsaturated carbon skeleton · CPC title

• C11D1/04

  Carboxylic acids or salts thereof (soap C11D9/00) · CPC title

• A61Q5/02

  Preparations for cleaning the hair · CPC title

• C11D1/37

  Mixtures of compounds all of which are anionic · CPC title

• C11D1/10

  Amino carboxylic acids; Imino carboxylic acids; Fatty acid condensates thereof · CPC title