JP2017160133A - Creamy cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a creamy cosmetic which has good spreadability in use, can obtain a sufficient amount of foam and creamy quality of foam in a short foaming time, has excellent feel during rinsing or after drying and can sustain a moisturized feeling.SOLUTION: There is provided a creamy cosmetic which comprises (A) 20 to 40 mass% of a potassium salt of a saturated fatty acid having 12 to 18 carbon atoms, (B) 0.005 to 0.5 mass% of a polymer comprising 2-methacryloyloxyethylphosphorylcholine and 2-hydroxy-3-methacryloyloxypropyltrimethylammonium chloride as constituting monomers, (C) 10 to 35 mass% of glycerin and (D) water.SELECTED DRAWING: None

Description

  The present invention relates to a creamy detergent.

  Conventionally, fatty acid soap has been used as a main component in creamy detergents because of its excellent spread, foam amount, foam quality, detergency, and lack of sliminess during rinsing. However, fatty acid soap has a problem in that it has a squeaky feeling during rinsing because of its high detergency and ease of metal soap. Furthermore, since the degreasing power is strong, there are cases where the skin may be irritated and the skin is dried by causing a decrease in the moisture content of the skin.

  In order to reduce the burden on the skin during washing, it is desirable to wash with a sufficient amount of creamy quality foam, but in order to obtain a sufficient amount of creamy quality foam, foaming for about 1 minute It takes time. On the other hand, as women become more active in the society and there are increasing opportunities for overnight stays during travel and business trips, there is an increasing demand for skin care in a shorter time, so a shorter time is required. Therefore, there has been a demand for a cleaning material that can provide a sufficient amount of creamy foam.

 As a method for comparing the foam performance of the cleaning material, a test method using a Milcer is generally performed, but since the stirring force of the Milcer is too strong, a sufficient amount of creamy quality foam is obtained. It is difficult to evaluate the foaming time by the Milcer test. Therefore, as a method for evaluating the foaming time for obtaining a sufficient quantity of creamy quality foam, an evaluation method assuming actual use is suitable.

  The squeaky feeling during rinsing with the fatty acid soap can be reduced by using in combination with other surfactants. For example, Patent Document 1 discloses a cleaning composition containing a fatty acid salt, an amide ether sulfate type anionic surfactant, an amphoteric surfactant, and a sorbitan ester type nonionic surfactant.

  Patent Document 2 discloses a detergent composition containing a fatty acid compound, a polymethyl methacrylate resin, and a cationic polymer as a detergent composition that has excellent foam performance and can impart a feeling of slipping to the skin after washing. Is disclosed. Although this detergent composition has sufficient foam volume and foam quality and can give a feeling of slip to the skin after washing, it is not possible to obtain a sufficient quantity and creamy quality foam in a short time. The moist feel after towel drying was not enough.

  On the other hand, Patent Document 3 contains a polymer containing fatty acid soap, amphoteric surfactant, (meth) acryloyloxyethyl phosphorylcholine as a constituent monomer for the purpose of giving moisture to the skin after washing and giving the skin a skin tone. A cleaning composition is disclosed. However, this detergent composition was unable to obtain a sufficient amount and creamy quality foam in a short time.

JP-A-8-325594 JP 2005-162719 A Japanese Patent Laid-Open No. 2001-72998

  Thus, it has been known that blending a water-soluble polymer with a detergent containing a fatty acid soap can improve the amount of foam and the quality of the foam and give the skin after washing a moist feeling. However, the present situation is that a cleaning agent capable of obtaining a sufficient amount of creamy quality foam in a short foaming time and maintaining a moist feeling has not yet been developed.

  It is an object of the present invention to have a good spread during use, to obtain a sufficient amount and creamy quality foam in a short foaming time, to be excellent in touch after rinsing and drying, and to maintain a moisturizing feeling. It is to provide a creamy cleaning material that can be used.

The present invention relates to the following (1) and (2).
(1) A creamy detergent comprising the following component (A), component (B), component (C) and component (D).
(A) 20 to 40% by mass of a potassium salt of a saturated fatty acid having 12 to 18 carbon atoms,
(B) 0.005 to 0.5% by mass of a polymer containing 2-methacryloyloxyethyl phosphorylcholine and 2-hydroxy-3-methacryloyloxypropyltrimethylammonium chloride as constituent monomers;
(C) 10-35% by mass of glycerin, and (D) water

(2) (E) 0.005 to 0.5% by mass of a polymer having 2-methacryloyloxyethyl phosphorylcholine and butyl methacrylate as constituent monomers, and a mass ratio of the component (B) to the component (E) { (B) / (E)} is 1/10 to 20/1, and the creamy detergent according to (1).

  According to the cream-like cleaning material of the present invention, the foaming at the time of use is good, a sufficient amount and creamy quality foam can be obtained in a short foaming time, excellent in feeling after rinsing and after drying, moisturizing A feeling lasts.

Embodiments of the present invention will be described below.
In the present specification, a numerical range defined using the symbol “to” includes numerical values at both ends (upper limit and lower limit) of “to”. For example, “2 to 5” represents 2 or more and 5 or less. In this specification, (meth) acryl represents acryl or methacryl, and (meth) acryloyl represents acryloyl or methacryloyl, respectively.

[(A) Potassium salt of saturated fatty acid having 12 to 18 carbon atoms]
Component (A) used in the present invention is a potassium salt of a saturated fatty acid having 12 to 18 carbon atoms. A potassium salt of a saturated fatty acid may be used in advance, or a saturated fatty acid having 12 to 18 carbon atoms in the system may be mixed with a considerable amount of an alkali agent. Moreover, it is preferable that the saturated fatty acid potassium salt of a component (A) is a mixture from the point of foam amount and foam quality.

  In a creamy detergent, it is common to use a system containing free fatty acids (overfat). In the present invention, the fatty acid may be added after the fatty acid salt is prepared, or when the fatty acid and the alkaline agent are reacted, the addition amount of the alkaline agent may be reduced to leave unreacted free fatty acid. Good. Under the present circumstances, it is preferable that content of alkaline agents, such as potassium hydroxide, is 0.7-0.9 equivalent with respect to a fatty acid.

  The fatty acid salt may be a single substance or a mixture, and specific examples thereof include lauric acid, myristic acid, palmitic acid, potassium salt of stearic acid, and mixtures thereof.

[(B) Polymer containing 2-methacryloyloxyethyl phosphorylcholine and 2-hydroxy-3-methacryloyloxypropyltrimethylammonium chloride as constituent monomers]
Component (B) used in the present invention is a polymer having 2-methacryloyloxyethyl phosphorylcholine and 2-hydroxy-3-methacryloyloxypropyltrimethylammonium chloride as constituent monomers. Specifically, it is a copolymer obtained by copolymerizing 2-methacryloyloxyethyl phosphorylcholine and 2-hydroxy-3-methacryloyloxypropyltrimethylammonium chloride. The molar ratio of 2-methacryloyloxyethyl phosphorylcholine to 2-hydroxy-3-methacryloyloxypropyltrimethylammonium chloride in the copolymer is preferably 19: 1 to 1: 1, more preferably 5: 1 to 2: 1. In the component (B), monomers other than the two components described above can be added.

The weight average molecular weight of the component (B) polymer is preferably 5,000 to 2,000,000, more preferably 100,000 to 1,000,000. The weight average molecular weight can be measured by gel permeation chromatography.
Specifically, as a polymer having 2-methacryloyloxyethyl phosphorylcholine and 2-hydroxy-3-methacryloyloxypropyltrimethylammonium chloride as constituent monomers, the product name “LIPIDURE-C” [manufactured by NOF Corporation, 2-methacryloyloxy] Ethyl phosphorylcholine 70 mol%, 2-hydroxy-3-methacryloyloxypropyltrimethylammonium chloride 30 mol%, weight average molecular weight: 420,000].

[(C) Glycerin]
Component (C) used in the present invention is glycerin. Glycerin can be produced by a method in which an aqueous solution obtained by hydrolyzing fats and oils is purified by distillation or the like.

[(D) Water]
The creamy detergent of the present invention contains water as a component (D) in addition to the components (A) to (C).

[(E) Polymer containing 2-methacryloyloxyethyl phosphorylcholine and butyl methacrylate as constituent monomers]
In the present invention, it is more preferable to add the component (E) for the purpose of further improving the moist feeling immediately after towel drying and maintaining the moist feeling after drying. Component (E) used in the present invention is a polymer having 2-methacryloyloxyethyl phosphorylcholine and butyl methacrylate as constituent monomers. Specifically, it is a polymer obtained by copolymerizing 2-methacryloyloxyethyl phosphorylcholine and butyl methacrylate, and the molar ratio of 2-methacryloyloxyethyl phosphorylcholine and butyl methacrylate in the polymer is preferably 1: 0. .1 to 1: 3, more preferably 1: 0.2 to 1: 1.
In component (E), monomers other than the two components described above can be added.

The weight average molecular weight of the component (E) polymer is preferably 10,000 to 2,000,000, and more preferably 100,000 to 1,000,000. The weight average molecular weight can be measured by gel permeation chromatography.
Specifically, as a polymer having 2-methacryloyloxyethyl phosphorylcholine and butyl methacrylate as constituent monomers, trade name “LIPIDURE-PMB” [manufactured by NOF Corporation, 80 mol% of 2-methacryloyloxyethyl phosphorylcholine, butyl methacrylate] 20 mol%, weight average molecular weight: 600,000].

  Content of (A) component in the cream-like cleaning material of this invention is 20-40 mass% with respect to cleaning material whole quantity, Preferably it is 24-38 mass%, More preferably, it is 28-36 mass%. . If the content of the component (A) is less than 20%, the amount and quality of the foam are not sufficient, and if it exceeds 40% by mass, the spread during use is poor and a squeaky sensation may occur during rinsing.

  Content of a component (B) is 0.005-0.5 mass% with respect to the washing | cleaning agent whole quantity, Preferably it is 0.01-0.4, More preferably, it is 0.025-0.3. % By mass, particularly preferably 0.05 to 0.2% by mass. When the content of the component (B) is less than 0.005% by mass, there is a feeling of squeezing at the time of rinsing, and the effect of shortening the foaming time and the moist feeling immediately after towel drying are insufficient. The amount may be insufficient.

  Content of a component (C) is 10-35 mass% with respect to cleaning material whole quantity, Preferably it is 15-30 mass%, More preferably, it is 20-25 mass%. When the content of the component (C) is less than 10% by mass, the spread during use may be deteriorated, and when it exceeds 35% by mass, a slimy feeling may be generated at the time of rinsing.

  Content of a component (E) is 0.005-0.5 mass%. Within such a range, the moisturizing feeling after drying is good, and a slimy feeling does not occur during rinsing. Preferably it is 0.025-0.4 mass%, More preferably, it is 0.025-0.3 mass%, More preferably, it is 0.05-0.2 mass%.

  The mass ratio {(B) / (E)} of the components (B) and (E) is 1/10 to 20/1, and within this range, the moist feeling immediately after towel drying and the moist feeling persistence Is good. Preferably it is 1/5 to 15/1, more preferably 1/4 to 10/1, still more preferably 1/1 to 10/1, and particularly preferably 1/1 to 4/1. .

  Content of a component (D) can be calculated | required by deducting the sum total of content of each other component from 100 mass% as a remainder.

  In addition to the above components (A) to (E), the creamy cleaning material of the present invention may further contain general components used in cosmetics and cleaning materials as additive components.

  The creamy detergent of the present invention can be produced by a known method. For example, a saturated fatty acid potassium salt as component (A), glycerin as component (C), water as component (D) and the like are mixed, heated and melted, and then component (B) and component (E After adding the water-soluble polymer as () and mixing uniformly, this can be stirred and cooled to near room temperature to produce the creamy detergent of the present invention.

  Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

The creamy detergents shown in Table 2 (Examples 1 to 10) and Table 3 (Comparative Examples 1 to 5) with the composition of the saturated fatty acid potassium salt shown in Table 1 were prepared and evaluated by the following methods.
In Tables 2 and 3, the numerical value of each component indicates the content (% by mass) relative to the total amount of the cleaning material.

Moreover, the following compounds were used as component (B), component (B '), and (E).
Component (B): Polymer B1: “LIPIDURE-C” (manufactured by NOF Corporation) (70 mol% of 2-methacryloyloxyethyl phosphorylcholine, 30 mol% of 2-hydroxy-3-methacryloyloxypropyltrimethylammonium chloride, weight average molecular weight: 420,000)
Component (B ′): Polymer B′1: “MERQUAT 550” manufactured by Nalco Japan Co., Ltd. (copolymer of 30 mol% dimethyldiallylammonium chloride and 70 mol% acrylamide. Weight average molecular weight: 1.6 million)
Component (E): Polymer E1: NOF Corporation “LIPIDURE-PMB” (2-methacryloyloxyethyl phosphorylcholine 80 mol%, butyl methacrylate 20 mol%, weight average molecular weight: 600,000)

<Evaluation method>
(1) Evaluation of spread at the time of use 20 women from the age of 25 to 55 years were panelists, and 1 g of the creamy washing material was taken and the spread was extended to the whole palm was evaluated according to the following criteria. .
2 points: When feeling that the spread is very good.
1 point: When feeling that the spread is slightly good.
0 point: When feeling that the spread is bad.

(2) Evaluation of foam with short whipping time Following (1), add a small amount of warm water of about 35 ° C. on the palm where the cream-like detergent is well extended, and then whipping 20-30 times in 10 seconds. The amount and quality of foam when foamed 20-30 times in 10 seconds after adding a small amount of warm water of about 35 ° C. were evaluated according to the following criteria as foam in a total foaming time of 20 seconds.
(Foam standard)
2 points: When the amount of foam is felt to be very large.
1 point: When it is felt that the amount of foam is slightly large.
0 point: When the amount of foam is felt to be small.
(Standard for foam quality)
2 points: When the foam feels very fine and creamy.
1 point: When the foam is slightly fine and creamy.
0 points: When the foam feels not creamy.

(3) Evaluation of foam with long foaming time Following (2), the amount and quality of foam when foamed for 40 seconds at a pace of 20-30 times in 10 seconds, the foam as total foaming time of 60 seconds is as follows. Evaluation was performed based on criteria.
(Foam standard)
2 points: When the amount of foam is felt to be very large.
1 point: When it is felt that the amount of foam is slightly large.
0 point: When the amount of foam is felt to be small.
(Standard for foam quality)
2 points: When the foam feels very fine and creamy.
1 point: When the foam is slightly fine and creamy.
0 points: When the foam feels not creamy.

(4) Evaluation of squeaky feeling and sliminess during rinsing Following (3), the face was washed with foamed foam. Thereafter, it was rinsed with lukewarm water, and the crispness and sliminess were evaluated according to the following criteria.
(Standard for squeaking)
2 points: When there is no squeaky feeling.
1 point: When it is felt that there is almost no squeaky feeling.
0 points: When a squeak is felt.
(Standard for slimy feeling)
2 points: When you feel that there is no sliminess.
1 point: When feeling that there is almost no sliminess.
0 points: When the user feels slimy.

(5) Evaluation of moist feeling immediately after towel drying Following (4), the moist feeling immediately after towel drying was evaluated according to the following criteria.
2 points: When feeling very moist.
1 point: When you feel a little moist.
0 point: When it feels that there is no moist feeling.

(6) Evaluation of moist feeling of the next morning Following (5), the skin moist feeling using skin lotion, emulsion, cream, etc. was not performed, and the moist feeling of the skin was evaluated the next morning.
2 points: When feeling very moist.
1 point: When you feel a little moist.
0 point: When it feels that there is no moist feeling.

The evaluations (1) to (6) above were determined according to the following criteria and are shown in Table 2 and Table 3, respectively. Note that “お よ び” and “◯” were determined to be acceptable.
◎: Total score is 35 or more ○: Total score is 30 or more and less than 35 △: Total score is 20 or more and less than 30 ×: Total score is less than 20

  Each of the creamy detergents of Examples 1 to 10 has good stretchability at the time of use, can obtain a sufficient amount of creamy foam with a short foaming time, and feels squeaky and slimy at the time of rinsing. There was no. Also, there was a moist feeling immediately after towel drying, and the moist feeling persisted until the next morning.

On the other hand, in Comparative Examples 1-5, sufficient performance is not obtained.
In Comparative Example 1, since the content of the component (A) was small, the amount and quality of the foam were not sufficient, and there was a slimy feeling at the time of rinsing.
In Comparative Example 2, since the component (B) was not blended, the foam quality was poor when foamed in a short time, and there was a squeaky feeling during rinsing, and the moist feeling was insufficient.
In Comparative Example 3, polymer 3 was blended in place of component (B), but foaming was not sufficient when foamed in a short time, and the moist feeling was insufficient.
In Comparative Example 4, since the content of the component (C) is small, the spread at the time of use is poor, the amount and quality of the foam are insufficient, there is a squeaky feeling at the time of rinsing, and the moist feeling does not last until the next morning. .
In Comparative Example 5, propylene glycol is blended in place of the component (C), but the spread during use is poor, the amount and quality of the foam are insufficient, and there is a squeaky feeling when rinsing, and a moist feeling is not good. It was enough.

Claims (2)

A creamy detergent comprising the following component (A), component (B), component (C) and component (D).

(A) 20 to 40% by mass of a potassium salt of a saturated fatty acid having 12 to 18 carbon atoms,
(B) 0.005 to 0.5% by mass of a polymer containing 2-methacryloyloxyethyl phosphorylcholine and 2-hydroxy-3-methacryloyloxypropyltrimethylammonium chloride as constituent monomers;
(C) 10-35% by mass of glycerin, and (D) water
  (E) 0.005 to 0.5% by mass of a polymer having 2-methacryloyloxyethyl phosphorylcholine and butyl methacrylate as constituent monomers, and a mass ratio of the component (B) to the component (E) {(B) / (E)} is 1/10 to 20/1, The creamy detergent according to claim 1 characterized by things.