JP2007326820A - Transparent liquid cleaning agent - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transparent liquid cleaning agent which can continue to be highly transparent over a long term in a wide temperature range and is sliminess-free and well-foamable. <P>SOLUTION: The transparent liquid cleaning agent comprises (a) 5-30 mass% fatty acid soap, (b) 0.1-5 mass% nonionic surfactant having an HLB of 10 or higher and desirably having a 18-40C branched saturated alkyl group, (c) 0.0001-1 mass% oil-soluble agent (e.g., oil-soluble vitamin), (d)1-7 mass% ethanol, and (e) the balance of water. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a transparent liquid cleaning material. More specifically, the present invention relates to a transparent liquid cleaning material that stably maintains transparency in a wide temperature range, has excellent foaming, and ensures good usability (freshness).

  As the transparent cleaning material base, a base mainly composed of fatty acid soap is the mainstream (see, for example, Patent Document 1).

  In recent years, detergents also require added value and compounding of effective ingredients is desired, but oil-soluble vitamins that are widely used as cosmetic ingredients are formulated into fatty acid soap-based transparent skin cleanser bases. In many cases, transparency was lowered, which was an obstacle to the formulation design.

  In order to incorporate oil-soluble substances into fatty acid soap-based transparent skin cleansing bases, it is conceivable to use nonionic surfactants together. There is a need to.

  However, when a relatively large amount of nonionic surfactant was blended, a feeling of slimness after use was generated, and the refreshing usability of the fatty acid soap system was impaired, or foaming was inhibited.

  As nonionic surfactants, those having fatty acid residues such as lauryl and oleyl tend to be used, but they are effective in improving transparency, but the base odor is strong and the quality is adversely affected. There are concerns about giving and safety to the skin.

Japanese Patent Laid-Open No. 11-12599

  As a result of diligent research in view of the above circumstances, the present inventors have incorporated a specific amount of HLB10 or higher nonionic surfactant and ethanol into a system containing fatty acid soap as a main component and an oil-soluble drug. The present invention is completed by finding that a transparent liquid cleaning material that maintains transparency over a long period of time in the region, does not inhibit foaming, has a slimy feeling, is not sticky, and has a refreshed usability can be obtained. It came to.

  That is, the present invention includes (a) 5 to 30% by mass of fatty acid soap, (b) 0.1 to 5% by mass of HLB10 or more nonionic surfactant, and (c) 0.0001 to 1% by mass of oil-soluble drug. %, (D) 1 to 7% by mass of ethanol, and (e) a balance of water.

  Moreover, this invention provides the said transparent liquid washing | cleaning agent whose (b) component is a nonionic surfactant more than HLB10 which has a C18-C40 branched saturated alkyl group.

  Moreover, this invention provides the said transparent liquid cleaning material whose (c) component is oil-soluble vitamins.

  According to the present invention, it is possible to provide a transparent liquid cleaning material that maintains transparency over a long period of time in a wide temperature range, does not inhibit foaming, and does not have a slimy feeling or stickiness, and has a refreshed usability. .

  Hereinafter, the present invention will be described in detail.

  As the fatty acid used in the fatty acid soap as the component (a) of the present invention, a fatty acid having 12 or more carbon atoms is preferably used, and more preferably a fatty acid having 12 to 18 carbon atoms. Specific examples include lauric acid, myristic acid, palmitic acid, and stearic acid. These fatty acids are used alone or in combination of two or more.

  Examples of the counter ion of the fatty acid soap include alkali metals such as sodium and potassium, and organic amines such as triethanolamine and aminomethylpropanol.

  The fatty acid soap in the present invention refers to a product obtained by neutralizing a part or all of a fatty acid with a base. In the present invention, there may be free fatty acids that remain unreacted without being neutralized. In particular, a neutralization rate of 30 to 100% is preferable from the viewpoint of pH stability in the system. In the present invention, the blending amount of the fatty acid soap refers to the total amount of the fatty acid and the base that neutralizes a part to all of the fatty acid.

  In the present invention, the fatty acid soap can be obtained by a method in which, for example, an aqueous alkaline solution containing a fatty acid and the above counter ion is mixed with other components to produce a fatty acid soap in the system, but the method is limited to this method. Of course not.

  (A) The compounding quantity of a component is 5-30 mass% in this invention cleaning material, Preferably it is 5-20 mass%. If the blending amount is less than 5% by mass, it is difficult to obtain a sufficient cleaning power as a product. On the other hand, if it exceeds 30% by mass, it is difficult to design a liquid dosage form.

  The component (b) is a nonionic surfactant of HLB 10 or higher, preferably HLB 11 or higher.

  HLB is the following number 1

[Equation 1]
HLB = 7 + 11.7.log (MW / MO)

(However, MW represents the molecular weight of the hydrophilic base, and MO represents the molecular weight of the lipophilic base)
It is calculated by the Kawakami equation represented by

  In the present invention, those having a branched saturated alkyl group having 18 to 40 carbon atoms are preferably used from the viewpoint of ensuring transparency and dissolving an oil-soluble drug, for example, POE alkyl (carbon number 20 to 36) ether. POE / POP alkyl (carbon number 20 to 36) ether, POE hydrogenated castor oil monoisostearate, POE glyceryl monoisostearate and the like are preferable examples.

  More specifically, POE (40) hydrogenated castor oil monoisostearate [HLB11], POE (50) hydrogenated castor oil monoisostearate [HLB12], POE (16) octyldodecyl ether [HLB12], POE (25) Octyldodecyl ether [HLB14], POE (24) POP (13) decyltetradecyl ether, POE (20) monoisostearate [HLB14], POE (10) glyceryl monoisostearate [HLB10], POE ( 60) Glyceryl monoisostearate [HLB19] and the like.

  (B) The compounding quantity of a component is 0.1-5 mass% in this invention cleaning material, Preferably it is 0.1-3 mass%. If the blending amount is less than 0.1% by mass, it is difficult to obtain sufficient transparency. On the other hand, if it exceeds 5% by mass, a refreshing feeling after use, a feeling of foaming, etc. cannot be obtained, which is not preferable.

The oil-soluble drug as the component (c) is not particularly limited as long as it can be generally blended into cosmetics. For example, retinol, 3-dehydroretinol, retinal, 3-dehydroretinal, retinoic acid, Vitamin A esters such as 3-dehydroretinoic acid, vitamin A acetate and vitamin A palmitate, vitamins such as carotenoids such as α-carotene, β-carotene, γ-carotene, β-cryptoxanthin and echinone, and provitamins such as xanthophylls Vitamin D types such as vitamins D _{2 to} D ₇ ; α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol, α-tocotriere, β-tocotriere, γ-tocotriere, δ-tocotriere , Vitamin E acetate, vitamin E nicotinate, etc. Glutamic E group; vitamin C derivatives such as ascorbyl dipalmitate; and the like of the oil-soluble vitamins. Examples of oil-soluble drugs other than oil-soluble vitamins include Photosensitive Element 201, Photosensitive Element 301, Stearyl Glycyrrhetinate, Glycyrrhetinic Acid, γ-Oryzanol, Hinokitiol, Musidin, Bisabolol, Inositol and the like. It is not limited. (C) 1 type (s) or 2 or more types are used for a component.

  (C) The compounding quantity of a component is 0.0001-1 mass% in this invention cleaning material, Preferably it is 0.05-0.5 mass%. If it is less than 0.0001% by mass, it is difficult to sufficiently exert the effect of the component (c), whereas if it exceeds 1% by mass, it becomes difficult to dissolve transparently.

  (D) The compounding quantity of ethanol as a component is 1-7 mass% in this invention cleaning material, More preferably, it is 1-5 mass%. If the blending amount is less than 1% by mass, it is difficult to maintain good transparency in a wide temperature range. On the other hand, if it exceeds 7% by mass, it is not preferable in terms of foaming feeling, usability, etc., and the viscosity of the cleaning system is reduced. Leading to a decrease in use.

  The remainder of the water as component (e) is blended.

  In the cleaning material of the present invention, “transparent” refers to a region having a transparency of 98 to 100 when the transparency of purified water is 100 and 0 is not transmitted at all.

  In addition to the above-mentioned components, the cleaning agent of the present invention can be arbitrarily mixed with components that can generally be blended with the cleaning agent as long as the objects and effects of the present invention are not impaired. Examples of such components include humectants such as glycerin, butylene glycol and dipropylene glycol, buffers such as citric acid and sodium citrate, chelating agents such as EDTA, dyes, fragrances, water-soluble polymers (cellulose-based polymers) Molecules), surfactants and the like. However, it is not limited to these components.

  The cleaning agent of the present invention is suitably used for cleaning skin and hair.

  The cleaning agent of the present invention can be obtained by a conventional method such as preparing an oil phase and an aqueous phase in advance and solubilizing by mixing, stirring, etc. while gradually adding the oil phase to the aqueous phase thus prepared. However, it is not limited to these exemplified production methods.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not limited to a following example. In addition, all compounding quantities are shown by the mass%.

  Test methods and evaluation criteria for each evaluation used in this example will be described.

[transparency]
After preparing each sample, the transparency immediately after production, the transparency after storage at 0 ° C. for 1 month, and the transparency after storage at 40 ° C. for 1 month were visually observed and evaluated.
(Evaluation criteria)
○: Transparent △: Slightly opaque ×: Opaque

[Refreshing after use]
Using a special panel (10 women), each sample was used for an actual use test (face washing), and the freshness after use was sensory-evaluated, and each person's evaluation was comprehensively evaluated. The evaluation criteria are as follows.
(Evaluation)
○: Refreshing △: Slightly sticky ×: Sticky

[Bubbling]
An actual use test (face washing) was performed using a special panel (10 women), and the foaming at the time of use was sensory-evaluated, and each person's evaluation was comprehensively evaluated. The evaluation criteria are as follows.
(Evaluation)
○: Excellent foaming △: Slightly foamy ×: Not foamy

(Examples 1-3, Comparative Examples 1-5)
The cleaning materials having the compositions shown in Table 1 below were prepared, and these cleaning materials were evaluated for transparency, freshness after use, and foaming feeling according to the above test methods and evaluation criteria. The results are shown in Table 1.

  As is clear from the results shown in Table 1, the cleaning materials of the present invention (Examples 1 to 3) can maintain excellent transparency over a long period of time in a wide temperature range, and also have a feeling of foaming and refreshing. Good usability was obtained. On the other hand, Comparative Examples 1 to 5 could not have all the effects of the present invention.

  Further formulation examples are shown below.

[Example 4]
(Mixed component) (mass%)
Lauric acid 5
Myristic acid 6
Stearic acid 2
Potassium hydroxide 3.5
Glycerin 2
Propylene glycol 7
POE (24) POP (13) decyl tetradecyl ether 0.1
Ethyl alcohol 3
Ascorbyl dipalmitate 0.01
Red 504 appropriate amount EDTA-3Na appropriate amount Fragrance appropriate amount Purified water residue

[Example 5]
(Mixed component) (mass%)
Lauric acid 3.5
Myristic acid 0.8
Methyl taurine sodium salt 6.9
Dipropylene glycol 5
Butylene glycol 5
Sorbitol 15
Palm fatty acid arginine 2.5
Palm fatty acid potassium 0.3
Lauryl Betaine 12
POE (50) hydrogenated castor oil monoisostearate [HLB12] 0.5
Ethyl alcohol 5
Carotene 0.0005
Purified water residue

[Example 6]
(Mixed component) (mass%)
Lauric acid 3
Myristic acid 2
Potassium hydroxide 1.5
Glycerin 1
POE (50) hydrogenated castor oil monoisostearate [HLB12] 0.5
Ethyl alcohol 5
Retinol palmitate 0.2
Sodium citrate 0.05
EDTA-3Na 0.1
Purified water residue

[Example 7]
(Mixed component) (mass%)
Lauric acid 2
Myristic acid 4
Triethanolamine 4.5
Propylene glycol 8
Xanthan gum 0.25
POE (25) octyldodecyl ether [HLB14] 1
Ethyl alcohol 1
Stearyl glycyrrhetinate 0.02
Metaphosphate sodium salt 0.1
Yellow 4 Appropriate amount Fragrance Appropriate amount Purified water residue

Claims (3)

  (A) 5 to 30% by mass of fatty acid soap, (b) 0.1 to 5% by mass of HLB10 or more nonionic surfactant, (c) 0.0001 to 1% by mass of oil-soluble drug, (d) A transparent liquid cleaning material comprising 1 to 7% by mass of ethanol and (e) the balance of water.   The transparent liquid cleaning material according to claim 1, wherein the component (b) is a nonionic surfactant having a branched saturated alkyl group having 18 to 40 carbon atoms and having an HLB of 10 or more.   (C) The transparent liquid cleaning material of Claim 1 or 2 whose components are oil-soluble vitamins.