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US 2022/0031599 A1Published application
Cleanser
AssigneeKao Corporation
InventorsYuko NAGASAKI, Toshiaki OZAWA
Life of this patent
Estimating the term…
Abstract
A cleanser including a non-aerosol foaming container and a liquid cleansing agent filled in the non-aerosol foaming container, the liquid cleansing agent containing the following components (A), (B) and (C): (A) an anionic surfactant, (B) from 0.1 to 2.5 mass % of a water-soluble polymer, wherein, in terms of the viscosity of a 1-mass % aqueous solution thereof, the ratio of viscosity v2 at a shear rate of 1.0×10−2 (s−1) to viscosity v1 at a shear rate of 1.0×10−1 (s−1) is v2/v1≥5, and (C) water.
Claims25
1:
- A cleanser, comprising:
- a non-aerosol foaming container and,
- a liquid cleansing agent filled in the non-aerosol foaming container, wherein the liquid cleansing agent comprises the following components (A), (B) and (C):
- (A) an anionic surfactant,
- (B) from 0.1 to 2.5 mass % of a water-soluble polymer, wherein, in terms of a viscosity of a 1-mass % aqueous solution thereof, a ratio of viscosity v2 at a shear rate of 1.0×10−2 (s−1) to viscosity v1 at a shear rate of 1.0×10−1 (s−1) is v2/v1≥5, and
- (C) water.
3 more elements
2:
- The cleanser according to claim 1, wherein a mass ratio of the component (A) to the component (B), (A)/(B), is from 1 to 100.
3:
- The cleanser according to claim 1, wherein the liquid cleansing agent comprises from 1 to 20 mass % of the component (A).
4:
- The cleanser according to claim 1, wherein the liquid cleansing agent comprises from 0.2 to 2.3 mass % of the component (B).
5:
- The cleanser according to claim 1, wherein the component (A) comprises at least one selected from the group consisting of alkyl ether carboxylates, fatty acid salts, N-acyl amino acid salts, and alkyl ether sulfates.
6:
- The cleanser according to claim 5, wherein the component (A) comprises a fatty acid salt having a linear or branched alkyl group or alkenyl group having from 9 to 21 carbon atoms.
7:
- The cleanser according to claim 5, wherein the component (A) comprises at least one selected from the group consisting of N-lauroyl glutamic acid, N-myristoyl glutamic acid, N-cocoyl glutamic acid, N-palmoyl glutamic acid, N-lauroyl aspartic acid, N-cocoyl glycine, N-cocoyl alanine and the salts thereof.
8:
- The cleanser according to claim 5, wherein the component (A) comprises an alkyl ether carboxylate represented by formula (1):
- R1—O—(CH2CH2O)n—CH2—COOX (1)
- wherein:
- R1 represents an alkyl group or an alkenyl group having from 8 to 20 carbon atoms;
- n represents the average number of moles of ethylene oxide added, and represents on average a number from 0.5 to 10;
- and X represents an alkali metal, an alkali earth metal, ammonium (NH4+), an organic ammonium or a basic amino acid.
3 more elements
9:
- The cleanser according to claim 1, wherein the component (B) is an anionic polymer, and when the polymer is neutralized, the ratio of viscosity v2 at a shear rate of 1.0×10−2 (s−1) to viscosity v1 at a shear rate of 1.0×104 (s−1) is v2/v1≥5, in terms of the viscosity of a 1-mass % aqueous solution thereof.
10:
- The cleanser according to claim 1, wherein the component (B) is a polymer comprising a repeating unit derived from acrylic acid and/or alkyl acrylate.
11-12. (canceled)
13:
- The cleanser according to claim 1, wherein the viscosity v2 at a shear rate of 1.0×10−2 (s−1) of a 1-mass % aqueous solution of the component (B) is 1 Pa-s or more.
14:
- The cleanser according to claim 1, wherein the liquid cleansing agent further comprises (D), a polyol.
15:
- The cleanser according to claim 14, wherein the liquid cleansing agent comprises from 2 to 50 mass % of the component (D).
16:
- The cleanser according to claim 14, wherein the component (D) is a dihydric or trihydric alcohol.
(canceled)
18:
- The cleanser according to claim 1, wherein the liquid cleansing agent further comprises an amphoteric surfactant.
(canceled)
20:
- The cleanser according to claim 1, wherein a viscosity at 30° C. of the liquid cleansing agent is from 5 to 1,000 mPa·s.
21:
- The cleanser according to claim 1, wherein the non-aerosol foaming container is a pump foamer or a squeeze foamer.
22:
- The cleanser according to claim 21, wherein the non-aerosol foaming container is a pump foamer equipped with a filter from 90 to 400 mesh in a dispensing passage.
23-24. (canceled)
25:
- A cleansing method, the method comprising dispensing a foam of a liquid cleansing agent in a non-aerosol foaming container from the container, wherein the liquid cleansing agent comprises the following components (A), (B) and (C):
- (A) an anionic surfactant,
- (B) from 0.1 to 2.5 mass % of a water-soluble polymer, wherein, in terms of a viscosity of a 1-mass % aqueous solution thereof, a ratio of viscosity v2 at a shear rate of 1.0×10−2 (s−1) to viscosity v1 at a shear rate of 1.0×10−1 (s−1) is v2/v1≥5, and
- (C) water;
- and
- spreading the foam over a skin to wash the skin.
3 more elements
26:
- The cleansing method according to claim 25, wherein the foam is poured onto one's hands, and spread directly by hand over the skin to wash the skin.
(canceled)
Dependencies are inferred from the claim text.