JP2017114813A - Body rinse agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lotion type body rinse agent capable of effectively improving the adsorption of water-insoluble inorganic powder to a skin and imparting excellent dry feeling to the skin, while satisfactorily suppressing squeaky feeling.SOLUTION: A body rinse agent contains: component (A) 2 mass% or more and 40 mass% or less of water-insoluble inorganic powder; component (B) 1% mass% or more and 20 mass% or less of silicone oil having a molecular weight of 150 or more and less than 50000; component (C) 0.02 mass% or more and 2 mass% or less of silicone oil having a molecular weight of 50000 or more and less than 1000000; component (D) 0.01 mass% or more and 5 mass% or less of one or more kinds of binders selected from xanthan gum, carrageenan, and agar; and component (E) water, wherein the content of each of the components (A), (B) and (C) is a specific mass ratio, and the viscosity at 25°C is less than 5000 mPas.SELECTED DRAWING: None

Description

  The present invention relates to a body rinse agent that is applied to skin and then rinsed with water.

  Conventionally, various skin cosmetics have been developed that can be applied to the skin after bathing or after showering to enhance the skin care effect and skin feel, or to provide a good feeling of use.

  For example, Patent Document 1 discloses an oil-in-water containing an oily component containing silicone oils having different molecular weights in a specific amount in an amount of 10 to 80% by mass and containing a water-soluble polymer such as an alkyl-modified carboxyvinyl polymer. A type of skin cosmetic is disclosed, which enhances moisturizing and moisturizing effects and powdery feeling in the presence of an emulsified and dispersed oily component. Patent Document 2 discloses an oil-in-water skin cosmetic containing nonionic surfactant and l-menthol or the like in a specific mass ratio and further containing silicone oil, and has a viscosity of 5000 to 5000 at 25 ° C. A so-called gel-type cosmetic material having a viscosity of 40,000 mPa · s has been disclosed, and attempts have been made to improve the coolness and the feeling of use.

  On the other hand, Patent Literature 3 discloses a body rinse agent containing a water-insoluble inorganic powder and an oily component that is liquid at 25 ° C. in a specific content and mass ratio. The wettability and spreadability of the components are improved, resulting in a good smooth feeling.

JP 2010-235460 A Japanese Patent Laying-Open No. 2015-89878 JP 2010-189366 A

  However, in the so-called lotion-type body rinse agent having a low viscosity, the technique described in Patent Documents 1 and 2 described above is intended to enhance the dry feeling of water-insoluble inorganic powders such as talc and kaolin. In addition, it is difficult not only to sufficiently exhibit the performance of the water-insoluble inorganic powder, but also a squeaky feeling may be exhibited. On the other hand, even with the technique described in Patent Document 3, there is still room for improvement in order to reduce the squeak feeling well while enhancing the smooth feeling.

  Therefore, the present invention is a lotion-type body rinse that can effectively enhance the adsorptivity of the water-insoluble inorganic powder to the skin to give the skin an excellent dry feeling while also suppressing the squeaky feeling. It relates to the agent.

  Therefore, the present inventor made various investigations, and specified that while containing a specific amount of water-insoluble inorganic powder, a silicone oil having a different molecular weight was used in a specific amount, and a specific binder and water were included. It is possible to obtain a low-viscosity lotion-type body rinse agent that can satisfactorily reduce the squeaky feeling while sufficiently enhancing the smooth feeling derived from the water-insoluble inorganic powder. I found it.

That is, the present invention includes the following components (A), (B), (C), (D), and (E):
(A) Water-insoluble inorganic powder 2 mass% or more and 40 mass% or less,
(B) Silicone oil having a molecular weight of 150 to less than 50000 1% by mass to 20% by mass,
(C) Silicone oil having a molecular weight of 50000 to less than 1000000 0.02% by mass to 2% by mass,
(D) One or more binders selected from xanthan gum, carrageenan, and agar 0.01% by mass or more and 5% by mass or less, and (E) containing water and the content of component (B) The mass ratio ((B) / (C)) to the content of the component (C) is 5 to 100, and the mass ratio of the content of the component (A) to the content of the component (C) ((A ) / (C)) is a body rinse agent having a viscosity of 15 or more and 200 or less and a viscosity at 25 ° C. of less than 5000 mPa · s.

  According to the body rinsing agent of the present invention, as a lotion-type agent, even after rinsing with bathing water or shower water after application, the skin feels smooth due to water-insoluble powders such as talc and kaolin. In addition, it is excellent in suppressing squeakiness and can provide a good feeling of use. Further, even if the content of the water-insoluble organic spherical powder is restricted, it is possible to achieve both the effect of imparting a smooth feeling and the effect of suppressing the smear feeling.

Hereinafter, the present invention will be described in detail.
The body rinse agent of this invention contains 2 mass% or more and 40 mass% or less of water-insoluble inorganic powder as a component (A). Thereby, it can combine with the component (B) and component (C) which are mentioned later, and can bring a favorable smooth feeling to skin.

  The water-insoluble inorganic powder of component (A) includes talc, kaolin, sericite, mica, bengara, clay, bentonite, diatomaceous earth, silica (silicic acid, anhydrous silicic acid), magnesium silicate, mica, magnesium oxide, oxidation From zinc, titanium oxide, aluminum oxide, aluminum sulfate, alum, calcium carbonate, calcium sulfate, barium sulfate, magnesium sulfate and other powders, and those powder surfaces chemically modified with silane coupling agents, etc. 1 type or 2 types or more selected are mentioned. Among these, from the viewpoint of effectively enhancing the smooth feeling combined with the component (B) and the component (C), one or two selected from talc and kaolin are preferable, and talc is more preferable.

  The content of the component (A) is 2% by mass or more, preferably 3% by mass or more, and more preferably 4% by mass in the body rinse agent of the present invention from the viewpoint of imparting a good smooth feeling. % Or more, and more preferably 5% by mass or more. Further, the content of the component (A) is preferably 40% by mass or less in the body rinse agent of the present invention from the viewpoint of favorably dispersing the component (A) in the body rinse agent at the time of use, and preferably Is 35 mass% or less, More preferably, it is 30 mass% or less, More preferably, it is 25 mass% or less. And content of a component (A) is 2 to 40 mass% in the body rinse agent of this invention, Preferably it is 3-35 mass%, More preferably, it is 4-30 mass%. More preferably, it is 5 to 25% by mass.

The body rinse agent of the present invention contains 1% by mass or more and 20% by mass or less of silicone oil having a molecular weight of 150 or more and less than 50000 as the component (B). Thereby, by having a specific mass ratio ((B) / (C)) together with a specific amount of the component (C) described later, the smooth feeling derived from the component (A) can be effectively enhanced. The squeaky feeling can be effectively suppressed.
As the component (B), a silicone oil containing a silicone oil having a molecular weight of 150 or more and less than 50000 may be used. Even if the silicone oil has a molecular weight of 50000 or more, the data on the molecular weight distribution of the silicone oil is used. In addition, a silicone oil corresponding to a molecular weight of 150 or more and less than 50000 may be added as the silicone oil of component (B) and used so as to have the above content in the body rinse agent of the present invention.
The molecular weight distribution of silicone oil can be measured by gel permeation chromatography (GPC). The molecular weight is a weight average molecular weight.

  Specific examples of the silicone oil of component (B) include dimethylpolysiloxane, methylphenylpolysiloxane, decamethyltetrasiloxane, octamethyltrisiloxane, octamethylcyclotetrasiloxane, decamethyl having a weight average molecular weight of 150 to 50,000. 1 type, or 2 or more types chosen from cyclopentasiloxane, dodecamethylcyclohexasiloxane, etc. are mentioned. Among these, from the viewpoint of skin feel, one or more selected from dimethylpolysiloxane, decamethylcyclopentasiloxane, and the like having a weight average molecular weight of 150 to 10,000, preferably 200 to 7000, more preferably 300 to 2000, and the like. Is preferred. In addition, the silicone oil of component (B) is available from Shin-Etsu Chemical Co., Ltd., Toray Dow Corning Co., Ltd., Momentive Performance Materials Japan GK, etc.

  The content of the component (B) is 1% by mass or more, preferably 1.5% in the body rinse agent of the present invention, mainly from the viewpoint of effectively enhancing the smooth feeling brought about by the component (A). It is at least mass%, more preferably at least 2 mass%, and even more preferably at least 2.5 mass%. Moreover, content of a component (B) is 20 mass% or less in the body rinse agent of this invention from a viewpoint of suppressing a sticky feeling, Preferably it is 17 mass% or less, More preferably, it is 12 mass. % Or less, and more preferably 10% by mass or less. And content of a component (B) is 1 to 20 mass% in the body rinse agent of this invention, Preferably it is 1.5 to 17 mass%, More preferably, it is 2 to 12 It is mass%, More preferably, it is 2.5-10 mass%.

The body rinse agent of this invention contains 0.02 mass% or more and 4 mass% or less of silicone oil of molecular weight 50000 or more and less than 1 million as a component (C). By using this component (C) together with the component (B), it is possible to enhance the adsorption power of the component (A) to the skin and effectively enhance the smooth feeling while providing a good feeling of use. .
As the component (C), a silicone oil containing a silicone oil having a molecular weight of 50,000 or more and less than 1,000,000 may be used. Even if the silicone oil has a molecular weight of less than 50,000, the silicone oil may be used. Based on the molecular weight distribution data, a silicone oil component having a molecular weight of 50,000 or more and less than 1,000,000 may be added as the silicone oil of component (C) and used so as to have the above content in the body rinse agent of the present invention.

  Specifically, as the component (C) silicone oil, for example, one or more highly polymerized dimethylpolysiloxanes having a weight average molecular weight of 50,000 to 1,000,000 can be used. Among these, dimethyl having a weight average molecular weight of 60,000 to 1,000,000, preferably 100,000 to 900,000, and more preferably 110,000 to 800,000, from the viewpoint of remarkably enhancing the smooth feeling while effectively increasing the adsorptive power of the component (A) to the skin. Polysiloxane is preferred. The component (C) silicone oil can be obtained from Shin-Etsu Chemical Co., Ltd., Toray Dow Corning Co., Ltd., and Momentive Performance Materials Japan LLC.

  The content of the component (C) increases the adsorptivity of the component (A) to the skin, and mainly enhances the smooth feeling brought about by the component (A), so that the body rinse agent of the present invention contains the component (C). 0.02% by mass or more, preferably 0.03% by mass or more, more preferably 0.04% by mass or more, and further preferably 0.05% by mass or more. In addition, the content of the component (B) is 2% by mass or less, preferably 1.5% by mass or less, in the body rinse agent of the present invention, from the viewpoint of effectively suppressing the squeaky feeling. Preferably it is 1 mass% or less, More preferably, it is 0.5 mass% or less. And content of a component (C) is 0.02 mass% or more and 2 mass% or less in the body rinse agent of this invention, Preferably it is 0.03-1.5 mass%, More preferably Is 0.04 to 1 mass%, more preferably 0.05 to 0.5 mass%.

  The mass ratio ((B) / (C)) of the content of the component (B) and the content of the component (C) is a viewpoint that the component (B) and the component (C) are combined to enhance the smooth feeling effectively. Therefore, it is 5 or more, preferably 6 or more, more preferably 7 or more, and further preferably 10 or more. Further, the mass ratio ((B) / (C)) between the content of the component (B) and the content of the component (C) is 100 or less from the viewpoint of ensuring a good squeaky effect. Preferably, it is 75 or less, More preferably, it is 50 or less, More preferably, it is 30 or less. And mass ratio ((B) / (C)) of content of a component (B) and content of a component (C) is 5-100, Preferably it is 6-75, More preferably Is 7-50, more preferably 10-30.

  The mass ratio ((A) / (C)) of the content of the component (A) and the content of the component (C) is 15 or more mainly from the viewpoint of effectively enhancing the dry feeling due to the component (A). Thus, it is preferably 17.5 or more, more preferably 20 or more, and further preferably 30 or more. The mass ratio ((A) / (C)) between the content of component (A) and the content of component (C) is the same as that of component (A) in the body rinse agent at the time of use as will be described later. From the viewpoint of good dispersion, it is 200 or less, preferably 175 or less, more preferably 150 or less, and even more preferably 100 or less. And mass ratio ((A) / (C)) of content of a component (A) and content of a component (C) is 15 or more and 200 or less, Preferably it is 17.5-175, More preferably, it is 20-150, More preferably, it is 30-100.

  The body rinse agent of the present invention contains 0.01% by mass or more and 5% by mass or less of one or more binders selected from xanthan gum, carrageenan, and agar as the component (D). Thereby, as a lotion type body rinse agent, a favorable feeling of use and application | coating can be provided. Among these, from the viewpoint of favorably dispersing the component (A) in the body rinse agent at the time of use as described later, one or two selected from xanthan gum and agar are preferable, and xanthan gum is more preferable.

  The content of the component (D) is 0.01% by mass or more, preferably 0.05% by mass in the body rinse agent of the present invention from the viewpoint of imparting a viscosity suitable as a lotion type body rinse agent. % Or more, More preferably, it is 0.07 mass% or more, More preferably, it is 0.1 mass% or more. In addition, the content of the component (D) is such that the viscosity rises more than necessary, and in the body rinse agent at the time of use as described later, from the viewpoint of effectively avoiding a decrease in the dispersibility of each component, In the body rinse agent of this invention, it is 5 mass% or less, Preferably it is 3 mass% or less, More preferably, it is 2 mass% or less, More preferably, it is 1 mass% or less. And content of a component (D) is 0.01 to 5 mass% in the body rinse agent of this invention, Preferably it is 0.05 to 3 mass%, More preferably, it is 0. 0.02 to 2 mass%, more preferably 0.1 to 1 mass%.

  The body rinse agent of this invention contains water as a component (E). Thereby, each component can be favorably dispersed in the body rinse agent at the time of use, as will be described later. The content of the component (E) is preferably 40 to 90% by mass, more preferably 45 to 85% by mass, particularly from the viewpoint of securing the dispersibility of the component (A) in the body rinse agent at the time of use. More preferably, it is 50-80 mass%.

  The body rinse agent of the present invention, in combination with the component (A), is further water-insoluble with an average particle size of 1 μm or more and 20 μm or less from the viewpoint of more remarkably enhancing the feeling of smoothness and imparting better coating properties. Organic spherical powder (F) can be contained. Examples of the component (F) include silicone powder, nylon, polystyrene, polyethylene, polypropylene, polytetrafluoroethylene, polyvinyl chloride, acrylic acid or acrylate polymer, methacrylic acid or methacrylic acid ester polymer, acrylic acid / styrene. Mention may be made of spherical powders such as copolymers and styrene / divinylbenzene copolymers. Among these, from the viewpoint of imparting good elongation at the time of application and a smooth feeling, silicone powder, which is obtained by pulverizing silicone resin or silicone rubber, is preferable.

The average particle size of the component (F) is preferably 1 μm or more and 20 μm or less, and more preferably 1 μm or more and 10 μm or less from the viewpoint of further enhancing the feeling of use.
In addition, since the body rinse agent of this invention brings about a favorable smooth feeling, you may restrict | limit the content of a component (F), for example, content of a component (F) is contained in the body rinse agent of this invention. 40 mass% or less, 10 mass% or less, or 4 mass% or less. Moreover, it is preferable that content of a component (F) is 1 mass% or more in the body rinse agent of this invention from a viewpoint of ensuring a high usability | use_condition.

  When the body rinse agent of this invention contains a component (F), mass ratio ((A) / (F)) of content of a component (A) and content of a component (F) is mentioned later. In the body rinse agent at the time of use, from the viewpoint of achieving good dispersion of these components (A) and component (F), and the effect of imparting a feeling of smoothness and the effect of suppressing squeaking, preferably 0.5 It is 15 or less, more preferably 1 or more and 10 or less, and further preferably 4 or more and 8 or less.

The body rinse agent of the present invention has a viewpoint of improving dispersibility of the component (A) and the component (F) contained as necessary in the body rinse agent at the time of use, as described later, and a viewpoint of improving antiseptic properties and the like. Therefore, it is preferable to further contain a monovalent alcohol (G) having 1 to 5 carbon atoms. Examples of the component (G) include one or more selected from ethanol, propanol, isopropanol, and butanol. Of these, ethanol, isopropanol, and a mixture thereof are preferable, and ethanol is more preferable.
Content of a component (G) becomes like this. Preferably it is 0.7-30 mass% in the body rinse agent of this invention, More preferably, it is 3-15%.

The body rinse agent of the present invention preferably restricts the content of the nonionic surfactant from the viewpoint of mainly ensuring the effect of imparting a smooth feeling due to the component (A) and effectively suppressing the squeaky feeling. . Such nonionic surfactants include polyoxyethylene alkyl ether, polyoxyalkylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl Examples include amines, polyglycerin fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene polyoxypropylene alkyl ethers, polyethylene glycol fatty acid esters, and polyether-modified silicone oils.
The content of the nonionic surfactant in the body rinse agent of the present invention is preferably less than 0.1% by mass, more preferably 0.05% by mass or less, or the body rinse agent of the present invention is nonionic. It is preferable not to contain a surfactant.

  The body rinse agent of the present invention has a viscosity at 25 ° C. of less than 5000 mPa · s. Thereby, as a lotion-type body rinse agent, favorable applicability | paintability and usability | use_condition can be implement | achieved. The body rinsing agent of the present invention is an agent that exhibits a two-phase structure of an oil phase and an aqueous phase in a stationary state during production or storage, and the body rinsing agent of the present invention filled in a container or the like during use. The agent is a type of agent that is applied after the components are dispersed, for example, by shaking the entire container. In addition, the viscosity at 25 ° C. in the body rinse agent of the present invention means a viscosity measured immediately after shaking the container filled at the time of use, and is equivalent to the value obtained by the measuring method described in the examples. A value that is considered to be

The viscosity at 25 ° C. of the body rinse agent of the present invention effectively combines the effect of enhancing the smooth feeling and the effect of suppressing the squeaking while maintaining good coating properties and feeling of use as a lotion type body rinse agent. From the viewpoint, and from the viewpoint of dispersing each component well and easily by shaking the container at the time of use, it is less than 5000 mPa · s, preferably 4000 mPa · s or less, more preferably 3500 mPa · s or less. Yes, more preferably 3000 mPa · s or less, preferably 100 mPa · s or more, more preferably 500 mPa · s or more, and still more preferably 800 mPa · s or more.
The viscosity of the body rinse agent at 25 ° C. can be measured using a B-type digital viscometer under the conditions of a rotor M4 and 60 seconds at 25 ° C. In addition, the rotation speed of a rotor is suitably selected according to the viscosity of a composition.

  The body rinse agent of the present invention further includes a moisturizing component, an anti-inflammatory agent, a whitening agent, a UV care agent, a cooling agent, a disinfectant, an antiseptic agent, an oxidation agent, as long as the effects of the present invention are not inhibited. An inhibitor, a fragrance | flavor etc. can be contained.

  Hereinafter, the present invention will be specifically described based on examples. In addition, unless otherwise indicated in a table | surface, content of each component shows the mass%.

[Examples 1-6, Comparative Examples 1-5]
As the silicone oil corresponding to the component (B) and the component (C), the silicone oil described in Table 1 is used, and for the components other than the component (B) and the component (C), the total amount is determined according to the formulation shown in Table 2. A body rinse agent to 100% by mass was prepared.
In addition, content of the component (B) and component (C) shown in Table 2 was calculated | required based on the molecular weight of the silicone oil shown in Table 1.
Each measurement and evaluation was performed according to the following method using the obtained body rinse agent.
The results are shown in Table 2.

<< Viscosity at 25 ° C >>
The viscosity (mPa · s) of the obtained body rinse agent was measured using a B-type digital viscometer (TOKI SANGYO) under the conditions of 25 ° C., rotor M4, rotation speed 12 rpm, and holding time 60 s.

<< Evaluation of smooth feeling >>
Five men and women aged 20 to 40 used it in the following usage.
In a room at 27 ° C. and a relative humidity of 50-60%, 2 mL of body rinse agent obtained on the wet forearm (one arm) after showering was uniformly applied to the whole, lightly rinsed in the shower, and then towel-dried. After 3 minutes, the forearm was lightly rubbed with the palm of the hand, and the smoothness (powderiness) of the skin was evaluated according to the following 5 levels, and the average value was determined.
5: Very powdery 4: Powdery 3: Slightly powdery 2: Not very powdery 1: Not powdery

<< Evaluation of squeaky feeling >>
Similar to the evaluation of dry feeling, towel dry using the obtained body rinse agent, lightly rub the forearm with the palm after 3 minutes, and evaluate the dry feeling of the skin according to the following 5 levels, and obtain the average value It was.
5: Very squeezing 4: Squeaking 3: Slightly squeaking 2: Not very squeezed 1: Not squeaky

Claims (5)

The following components (A), (B), (C), (D) and (E):
(A) Water-insoluble inorganic powder 2 mass% or more and 40 mass% or less,
(B) Silicone oil having a molecular weight of 150 to less than 50000 1% by mass to 20% by mass,
(C) Silicone oil having a molecular weight of 50000 to less than 1000000 0.02% by mass to 2% by mass,
(D) One or more binders selected from xanthan gum, carrageenan, and agar 0.01% by mass or more and 5% by mass or less, and (E) containing water and the content of component (B) The mass ratio ((B) / (C)) to the content of the component (C) is 5 to 100, and the mass ratio of the content of the component (A) to the content of the component (C) ((A ) / (C)) is 15 or more and 200 or less, and the body rinse agent whose viscosity in 25 degreeC is less than 5000 mPa * s.   Furthermore, the water-insoluble organic spherical powder (F) having an average particle diameter of 1 μm or more and 20 μm or less is contained, and the mass ratio of the content of the component (A) to the content of the component (F) ((A) / ( The body rinse agent according to claim 1, wherein F)) is 0.5 or more and 15 or less.   The body rinse agent according to claim 1 or 2, wherein the content of the nonionic surfactant is less than 0.1% by mass.   Furthermore, the body rinse agent of any one of Claims 1-3 containing C1-C5 monohydric alcohol (G).   The body rinse agent according to any one of claims 1 to 4, wherein the component (A) is one or two selected from talc and kaolin.