JP5756946B2 - Skin cleanser - Google Patents

Description

  The present invention relates to a skin cleanser used for hand washing and the like.

Conventionally, as a cleaning agent used for hand washing, a composition in which water-insoluble particles are dispersed in an aqueous surfactant solution is provided.
Light-weight particles such as shirasu balloons are used as the water-insoluble particles.
In addition to the detergency of the surfactant, the water-insoluble particles have a role of removing scratches by polishing dirt that is difficult to remove.
The water-insoluble particles must be stably dispersed in the aqueous surfactant solution. For this purpose, a water-soluble polymer such as CMC is added as a dispersion stabilizer.

Japanese Patent Laid-Open No. 10-204491 Japanese Patent Laid-Open No. 62-039507 Japanese Patent Laid-Open No. 10-001424

The water-insoluble particles are desirably light-weight particles that float on water so as not to cause clogging in the drain pipe or the like. However, conventional water-soluble polymers have insufficient dispersion stability, and there is a possibility that water-insoluble particles may float and separate. When added in a large amount to prevent the particles from floating and separating, the spreadability of the cleaning agent is inferior. There was a problem that skinning occurred.

The present invention provides a surfactant and a high-boiling organic solvent that does not irritate the skin as a means for solving the above conventional problems , and includes benzyl alcohol, liquid paraffin, propylene glycol, ethylene glycol, glycerin, orange oil, and limonene. An oil removing agent composed of one or more organic solvents selected from the group consisting of : acrylic acid / methacrylic acid ester having 4 or less carbon atoms / polymerizable vinyl group in one molecule. Polyfunctional vinyl compound copolymer having two or more polyfunctional vinyl compound copolymers or methacrylic acid / acrylic acid ester having an alkyl group having 4 or less carbon atoms / polymerizable vinyl group in one molecule A skin cleanser in which water-floating inorganic hollow body particles are dispersed in an aqueous solution containing
In the cleaning agent, 5 to 20% by mass of the surfactant, 5 to 15% by mass of the oil removing agent, acrylic acid / methacrylic acid ester having 4 or less carbon atoms / polymerizable vinyl group. A polyfunctional vinyl compound copolymer having two or more per molecule, or a polyfunctional vinyl compound copolymer having two or more methacrylic acid / acrylic acid ester having an alkyl group having 4 or less carbon atoms / polymerizable vinyl group in one molecule. It is desirable that 0.1 to 0.5% by mass of the functional vinyl compound copolymer and 3 to 15% by mass of the water-floating inorganic hollow body particles are contained.

[Action]
The surfactant is the main role of imparting detergency to the cleaning agent of the present invention. However, an oil remover is added to oil stains to enhance the cleaning performance against oily contaminants.
The inorganic hollow body particles impart abrasiveness to the cleaning agent of the present invention, and scrub off contaminants firmly attached to the skin. Since the inorganic hollow body particles are light and float in water, they do not clog drain pipes and the like.
Acrylic acid / methacrylic acid ester having an alkyl group having 4 or less carbon atoms / polyfunctional vinyl compound copolymer having at least two polymerizable vinyl groups in one molecule, or methacrylic acid / alkyl group having 4 or less carbon atoms The polyfunctional vinyl compound copolymer having two or more acrylate esters / polymerizable vinyl groups in one molecule imparts a non-Newtonian viscosity to the cleaning agent of the present invention, so that the water-insoluble particles can be used even in small amounts. Prevent floating separation. And the above-mentioned acrylic acid / methacrylic acid ester having 4 or less carbon atoms / polyfunctional vinyl compound copolymer having two or more polymerizable vinyl groups in one molecule, or methacrylic acid / 4 or less carbon atoms Acrylic ester having an alkyl group / polyfunctional vinyl compound copolymer having two or more polymerizable vinyl groups in one molecule gives the cleaning agent a viscosity excellent in spreadability, so the feeling of use of the cleaning agent is good. become.

〔effect〕
In the present invention, the dirt on the skin efficiently removed, moreover detergent without Rukoto clog the like drainage tube is provided.

The present invention is described in detail below [Surfactant]
Examples of the surfactant used in the present invention include nonionic surfactants, anionic surfactants, and cationic surfactants. Desirable surfactants include nonionic surfactants that are less irritating to the skin. It is.
Nonionic surfactants include polyoxyethylene alkyl ether, polyoxyethylene alkyl phenol ether, polyoxyethylene alkyl ester, polyoxyethylene alkyl amine, polyoxyethylene alkylol amine, polyoxyethylene alkyl amide, sorbitan alkyl ester, polyoxyethylene alkyl ester, Examples thereof include oxyethylene sorbitan alkyl ester.
Examples of the anionic surfactant include higher alcohol sulfate (Na salt or amine salt), alkylallyl sulfonate (Na salt or amine salt), alkyl naphthalene sulfonate (Na salt or amine salt), alkyl naphthalene sulfonate. Examples include condensates, alkyl phosphates, dialkylsulfosuccinates, rosin soaps, fatty acid salts (Na salts or amine salts), and the like.
Examples of the cationic surfactant include octadecylamine acetate, imidazoline derivative acetate, polyalkylene polyamine derivative or salt thereof, octadecyltrimethylammonium chloride, trimethylaminoethylalkylamide halogenide, alkylpyridinium sulfate, alkyltrimethylammonium halide, and the like. It is done.

[Oil remover]
The oil removing agent used in the present invention is a high-boiling organic solvent that does not irritate the skin, and is selected from the group consisting of benzyl alcohol, liquid paraffin, propylene glycol, ethylene glycol, glycerin, orange oil, and limonene. or two or more organic solvents Ru is used.

[Copolymer]
The copolymer used in the present invention is a polyfunctional vinyl compound copolymer having two or more acrylic acid / methacrylic acid ester / polymerizable vinyl groups in one molecule, or methacrylic acid / acrylic acid ester / polymerizable. It is a polyfunctional vinyl compound copolymer having two or more vinyl groups in one molecule.
As said acrylic acid ester or methacrylic acid ester, carbon number such as methyl (meth) acrylate, ethyl (meth) acrylate, isopropyl (meth) acrylate, isobutyl (meth) acrylate, normal butyl (meth) acrylate, etc. It is an ester having 4 or less alkyl groups.
In addition, a polyfunctional vinyl compound containing two or more polymerizable vinyl groups in one molecule is added to the copolymer as a crosslinking agent so that it does not inhibit water solubility. Examples of the crosslinking agent include divinylbenzene, diallyl phthalate, triallyl phosphate, tetraallyloxyethane, glucose (meth) acrylic ester, and sucrose (meth) acrylic ester.

In the cleaning agent of the present invention, the copolymer may exist in a salt state. In order to salt the copolymer, for example, caustic soda, caustic potash, inorganic alkali such as sodium carbonate,
Diethylamine, triethylamine, diisopropylamine, triisopropylamine,
Organic alkalis such as diethanolamine, triethanolamine, diisopropanolamine and triisopropanolamine are used. If the copolymer is made into a salt form, water solubility is improved. The copolymer may be added to the aqueous solution after having been made into a salt form in advance, or may be added to the aqueous solution and then neutralized with the alkali.

In the above copolymer, the acrylic acid component imparts favorable spreading properties to the cleaning agent, and the methacrylic acid component imparts non-Newtonian viscosity to the cleaning agent to effectively prevent the floating separation of the water-floating inorganic hollow particles described later. . There is almost no adverse effect on the skin.

[Water-floating inorganic hollow particles]
Examples of the water-floating inorganic hollow body particles used in the present invention include silica balloons,
There are Shirasu balloons, glass balloons, barlites, and the like, and the above particles have an apparent specific gravity smaller than that of water so that they float on water, and those having a number average particle diameter in the range of 40 μm to 300 μm are desirable.
In addition, natural materials such as Shirasu Balloon are less toxic and harmless than the artificial materials such as polyethylene powder, and are non-toxic and harmless. Desirable as a floating inorganic hollow body particle. In addition, since the surface of the water-floating inorganic hollow body particles made of an artificial material is irregular, the surface of the water-floating inorganic hollow body particles made of a natural material has a smooth surface. From the viewpoint of environmental protection, it is difficult to get stuck on the inner surface of the sewer pipe.

[Other ingredients]
As other components, for example, a water-soluble organic solvent such as ethanol and isopropanol, a titanium oxide having a photocatalytic action, an antiseptic, an antifungal agent, a fragrance, and a pigment may be added.

[Combination]
In the cleaning agent of the present invention, the surfactant is usually 5 to 20 mass%, the oil removing agent is 5 to 15 mass%, the copolymer is 0.1 to 0.5 mass%, and the inorganic hollow is in an aqueous solution. 3-15 mass% of body particles are mix | blended.
The surfactant exhibits a sufficient detergency in this range, and the cleaning effect is saturated at an amount exceeding this range.
The oil removing agent exhibits a sufficient effect of removing oily contaminants within this range, but if the amount exceeds this range, the removal effect is saturated and the skin may be roughened.
The copolymer exhibits a sufficient dispersing effect in this range. If the amount exceeds this range, the dispersing effect is saturated, and the spreadability of the cleaning agent may be deteriorated or skinning may occur.
The inorganic hollow body particles exhibit a sufficient polishing effect in this range, but if the amount exceeds this range, the cleaning agent may be roughened.

（*１）Ｎｏ．１共重合体組成
アクリル酸 ９０質量部
メタクリル酸メチル １０質量部
アクリル酸グルコースエステル ０．０１質量部
（*２）Ｎｏ．２共重合体組成
メタクリル酸 ８０質量部
アクリル酸エチル ２０質量部
アクリル酸ショ糖エステル ０．０２質量部
〔Example〕
The skin cleansing agents of Formulation 1 and Formulation 2 are prepared with the blending amounts shown in Table 1.

(* 1) No. 1 Copolymer composition Acrylic acid 90 parts by weight Methyl methacrylate 10 parts by weight Acrylic acid glucose ester 0.01 parts by weight (* 2) No. 1 2 Copolymer composition Methacrylic acid 80 parts by weight Ethyl acrylate 20 parts by weight Acrylic acid sucrose ester 0.02 parts by weight

（*１）Ｎｏ．１共重合体組成
アクリル酸 ９０質量部
メタクリル酸メチル １０質量部
アクリル酸グルコースエステル ０．０１質量部
[Comparative Example]
The skin cleansing agents of Comparative Formulation 1 to Comparative Formulation 3 are prepared with the blending amounts shown in Table 2.

(* 1) No. 1 Copolymer composition Acrylic acid 90 parts by weight Methyl methacrylate 10 parts by weight Acrylic acid glucose ester 0.01 parts by weight

[Dispersion stability test]
The cleaning agents according to Formulas 1 and 2 were filled in a sealed container and left at room temperature for 3 months. further,
A cleaning agent prepared by adding Shirasu balloon to Comparative Formulation 1 so as to have the same blending amount as Formulation 1 or Formulation 2 was filled in an airtight container and allowed to stand at room temperature for 3 months. And about these cleaning agents,
The presence or absence of floating separation of the shirasu balloon was observed. The results are shown in Table 3.

[Detergency test]
A point of 1 cm diameter was drawn on the back of the hand with an oil pen (black), the point was made dirty, a small amount of sample was hung on the dirt and rubbed with a finger, and the degree of dirt was observed. The results are shown in Table 4.

[Extensibility test]
A small amount of sample was taken on the back of the hand, spread with fingers and observed. The results are shown in Table 5.

[Rinsability test]
Following the spreadability test, the hands were washed with water and the drop of the sample was observed. The results are shown in Table 6.

The skin cleanser of the present invention has excellent cleanability and abrasiveness, can easily remove strong dirt adhering to the skin, and also has good rinsing properties, so it is easy to use and long. Since it can be stored stably for a period, it can be used industrially.

Claims (2)

A surfactant and a high-boiling organic solvent that does not irritate the skin, and one or more organic compounds selected from the group consisting of benzyl alcohol, liquid paraffin, propylene glycol, ethylene glycol, glycerin, orange oil, and limonene An oil remover comprising a solvent and acrylic acid / methacrylic acid ester having an alkyl group having 4 or less carbon atoms / polyfunctional vinyl compound copolymer having two or more polymerizable vinyl groups in one molecule, or methacrylic acid / Dispersing water-floating inorganic hollow particles in an aqueous solution containing an acrylate ester having an alkyl group having 4 or less carbon atoms / a polyfunctional vinyl compound copolymer having two or more polymerizable vinyl groups in one molecule A cleansing agent for skin. 5 to 20% by mass of the surfactant, 5 to 15% by mass of the oil removing agent, acrylic acid / methacrylic acid ester having an alkyl group having 4 or less carbon atoms / two or more polymerizable vinyl groups in one molecule. Polyfunctional vinyl compound copolymer having methacrylic acid / acrylic acid ester having an alkyl group having 4 or less carbon atoms / polyfunctional vinyl compound copolymer having two or more polymerizable vinyl groups in one molecule. The skin cleanser according to claim 1, wherein 1 to 0.5% by mass and 3 to 15% by mass of the water-floating inorganic hollow body particles are contained.