JPS6187612A - Cosmetic - Google Patents

Abstract

PURPOSE:To provide a black or brown cosmetic having high dispersion stability and UV-absorbing property, by using an ester of humic acid or nitrohumic acid with an acid and/or alcohol, as a component. CONSTITUTION:The objective cosmetic contains an ester of humic acid or nitrohumic acid and an acid and/or alcohol (e.g. ethyl humate) in an amount of 0.01-40wt%. The ester is black or brown powder insoluble in water and oil, resistant to coagulation, having excellent dispersibility in water or oil, and resistant to oxidation. Accordingly, the salt can be pulverized to fine powder, and the obtained powder has strong coloring power, high thermal stability and resistant to acid, and giving hardly separable intimate mixture with other powder since the specific gravity of the ester is 1-2. Humic acid and nitrohumic acid is a solid having black or brown color according to the kind of the extracted soil, and has carboxyl group and alcoholic OH group.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention relates to humic acid or nitrofumic acid, an acid and (
or) A novel cosmetic composition characterized by incorporating an ester compound with an alcohol as a cosmetic component, and having good dispersion stability and ultraviolet absorbing ability.

[Prior Art] Conventionally, black iron oxide has been widely used as a black pigment in cosmetics. Furthermore, since it is difficult to obtain the required color tone with a single pigment, black iron oxide has been used in combination with yellow and red pigments.

[Problems to be Solved by the Invention] However, black iron oxide, which is a conventional black pigment, has the following drawbacks. That is, black iron oxide tends to aggregate in water or oil, has poor dispersibility, and is easily oxidized, making it difficult to form fine particles and having weak coloring power. Furthermore,
At temperatures above 160°C, it changes to brown gamma iron oxide, making it difficult to apply heat and being sensitive to acids. In addition, since it has a heavy specific gravity of 5.5, it is easy to separate when mixed with other powders. Therefore, even cosmetics containing black iron oxide have the same problems as described above. On the other hand, carbon black, which is excellent in these properties, is questionable in terms of skin safety, and its use is currently discouraged.

As mentioned above, the brown pigment was obtained by mixing a yellow pigment and a red pigment in addition to black iron oxide to obtain the necessary color tone. Therefore, depending on the conditions, there was a drawback that the pigments of each color could separate.

This is how the invention store won first prize! J-In consideration of the circumstances, it is necessary to resolve the drawbacks associated with cosmetics containing black pigments and brown pigments (after extensive studies, it has been found that ester compounds of humic acid or nitrofumic acid and acids and/or alcohols are After solving all of these RGI problems, we surprisingly discovered that it also has strong ultraviolet absorption ability, and completed the present invention.

[Means for Solving the Problems] In other words, the present invention comprises one or two selected from the group consisting of ester compounds of humic acid or nitrofumic acid and acids and/or alcohols. It is a cosmetic that is characterized by the fact that it is formulated with

The configuration of the present invention will be described below.

The ester compound used in the present invention is obtained by reacting humic acid or nitrohumic acid with an acid and/or an alcohol. Humic acid is extracted from natural soil, grass charcoal, peat, etc. with water, an aqueous alkaline solution, etc. It is an organic acid derived from plants and has a molecular weight of several hundred to several million. Nitrohumic acid is extracted by oxidizing it with nitric acid during extraction. It is a solid that is black or brownish in color depending on the soil.
It has a carboxyl group and an alcoholic hydroxyl group in its molecule.

In order to obtain esters of humic acid or nitrohumic acid, these are treated with acids or alcohols under appropriate conditions. Various acids can be used as the acid, but fatty acids, oxalic acid, citric acid, succinic acid, etc. are preferable.

As the alcohol according to the present invention, both monohydric alcohols having one alcoholic hydroxyl group and polyhydric alcohols having two or more alcoholic hydroxyl groups can be used, but those having 1 to 30 carbon atoms are preferable, and preferably ethanol, furopanol, Buknol, lauryl alcohol, myristyl alcohol,
Cetyl alcohol, stearyl alcohol, etc. are suitable, and ethylene glycol, glycerin, etc. are also suitable.

For example, to obtain ethyl humate, humic acid is dispersed and dissolved in ethanol, a small amount of sulfuric acid is added, and this is heated.
After esterification, the obtained ethyl humate is washed and dried to obtain ethyl humate.

In the present invention, two or more of the esters of humic acid or nitrohumic acid are o, ooo, i to 60Ji amount% (hereinafter referred to as %) in the total amount of the cosmetic,
It is preferably blended in an amount of 0.01 to 40%, but 0.000%
If it is less than 1%, the color strength and UV absorption ability will be weak, and the
%, it is difficult to adjust the color.

In addition to the above-mentioned essential ingredients, the cosmetics of the present invention may include oil, water, surfactants, humectants, lower alcohols, thickeners, fragrances, antioxidants, etc., depending on the type of cosmetics, if necessary. Ingredients commonly used in cosmetics, such as chelating agents, pigments, and preservatives, can be blended.

The dosage form of the cosmetic composition of the present invention is arbitrary, and may be any dosage form, such as a dispersion system, an emulsion system, or a powder system.

The cosmetics of the present invention can also be used in any way, including makeup cosmetics such as foundation, lipstick, eye shadow, eyeliner, and enamel, as well as facial cosmetics such as sun care products, lotions, milky lotions, creams, and bags. It can also be used in body cosmetics, hair cosmetics, aromatic cosmetics, etc.

[Effects of the Invention] The esters of humic acid and nitrofumic acid according to the present invention are black or brown powders that are insoluble in water and oil, are resistant to agglomeration, have excellent dispersibility in water and oil, and are oxidized. Because it is hard to powder, it can be made into fine particles, has strong coloring power, good thermal stability, is resistant to acids, and has a specific gravity of 1 to 2, so it is difficult to separate even when mixed with other powders and incorporated into cosmetics. Furthermore, these esters of humic acid and nitrofumic acid have strong ultraviolet absorption ability, and have the effect of preventing sunburn, preventing skin aging, and preventing skin cancer.

By blending the above-mentioned black or brown humic acid or nitrogenic humic acid esters into cosmetics, novel cosmetics with excellent properties and high functionality were obtained.

[Examples] Next, examples and comparative examples will be given to specifically clarify the present invention. The present invention is not limited thereby. Compounding materials are in weight percent.

Example 1-8 A dispersion having the following composition was mixed at room temperature and dispersed for 1 minute using a disperser to prepare a dispersion. Dispersion stability was evaluated by the amount of pigment sedimentation after one day at room temperature.

The results are shown in Table-1.

(Composition) 1: Water or oil 95 2: Pigment 5 (Dispersion stability evaluation criteria) ○: Almost no sedimentation Δ: Sedimentation of less than half of the volume X: Sedimentation of more than half of 8 volumes Comparative example 1- 2 Dispersions with the following compositions were prepared in the same manner as in Examples 1-8 and evaluated using the same criteria. Results +, shown in Table 1-2.

(Composition) 1: Water or oil 95 2: Black iron oxide 5 As shown in Tables 1 and 2, when the pigment of the present invention is dispersed, its dispersion stability is extremely high regardless of whether it is in water or oil. Although the results were good, the dispersion stability of black iron oxide was extremely poor.

Table 2 Comparative Example 1-6 Example 9 Knead 40% ethyl humate and 60% castor oil with a roller, disperse 25% of this mixture and 75% castor oil with a disperser, and place on a quartz plate using a doctor blade. The absorbance was measured using a spectrophotometer.

Castor oil was used as a reference. Table 3 shows the results.
Shown below.

Comparative Example-7 Absorbance was measured in the same manner as in Example-9, except that ethyl humate in Example-9 was replaced with black iron oxide (the following is a blank space).
The results are shown in Table 4.

As shown in Tables 3 and 4, ethyl humate has a strong ultraviolet absorption ability, but that of black iron oxide was small.

Example 10 The following composition was dispersed with a disper, kneaded with a roller, poured into a mold, and the color tone was observed.

(Composition) Liquid paraffin 5 Titanium dioxide 48 Ethyl humate 2 Comparative example-8 The color tone was observed under the same conditions as in Example-1O except that ethyl humate was replaced with black iron oxide.

As a result, in the comparative example, separation of black iron oxide occurred and white or black stripes were seen on the poured surface, whereas in the example, dispersibility was good and the surface was fairly uniform.

Example-11 Santan gel (composition) 1) Ryupara, 67 2) Microcrystalline wax 3 3) Ceresin 7 4) Vaseline 5 5) Lanolin 3 6) Ethyl fluorophosphate 15 (N method) 1) to 6) The mixture was stirred and mixed at 80°C, dispersed with a disper, and cooled to obtain Santangel.

The humic acid ester had good dispersibility, and the dispersion stability of Santangel was good. A strong UV protection effect was also obtained.

Example-12 Foundation (composition) 1) Titanium dioxide 62) Talc 63) Kaolin
34) Stearic acid
25) Cetyl alcohol 0
．． 36) Liquid paraffin 207) Polyoxyethylene 1 (10 mol) oleate ester 8) Sorbitan trioleate 19) Purpylene glycol 510) Polyethylene glycol 4000 511) Triethanolamine
112) Peagam
O, 513) Purified water
47.9914) Red iron oxide 0
．． 215) Yellow iron oxide O,51
6) Ethyl nitrofumate 0.00117) Flavor 0.118) Methyl parahydroxybenzoate 0.1 (Production method) 1)-3) and 141-16) are mixed and processed in a pulverizer to form a powder. 9)-13) are mixed and heated to dissolve.

The powder part is dispersed in this and kept at 70°C to form an aqueous phase part. 4)-8) and 17).

18) was dissolved by heating and kept at 70°C to form an oil phase.

The oil phase was added to the water phase for reaction emulsification, and the mixture was uniformly emulsified and dispersed using a homomixer, and then cooled with stirring to obtain a foundation.

Example-13 Eyeliner (formulation) 1) Ultramarine 52) Humic acid acetate 303) Talc
64) Palmitic acid
165) Carnauba Rou
56) Lanolin derivatives
107) Polyethylene glycol 1500 1
08) Triethanolamine 189) Perfume Appropriate amount 10) Antioxidant Appropriate amount (Production method) 1) -3) are thoroughly stirred in a kneader to form a powder.

Add purified water equivalent to 50% to 7) and 8), heat and dissolve, and maintain at 70°C to form an aqueous phase.

4) Dissolve -6) and 10) by heating and keep at 70°C to form an oil phase. The oil phase is added to the aqueous phase and uniformly emulsified using a homomixer, and this is added to the powder section and kneaded using a kneader, after which water is removed and the mixture is processed using a powder P& machine. Further, while stirring the mixture well, fragrance was uniformly sprayed on the mixture, and the mixture was compression molded to obtain an eyeliner.

Example-14 Mascara (formulation) 1) Humic acid triglyceride 102) Polyacrylic acid ester emulsion 303) Solid paraffin 84) Lanolin wax
85) Isoparaffinic hydrocarbon 306) Sorbitan sesquioleate 47) Joseicei 108
) Fragrance: Appropriate amount 9) Preservative: Appropriate amount (manufacturing method) Add 1) to 7) and disperse with a homomixer, then add 2) and heat and keep at 70°C to form an aqueous phase.

Mix 3)-6), 8) and 9), heat and melt to 70
Keep at ℃ to form oil phase. The aqueous phase was added to the oil phase, uniformly emulsified and dispersed using a homomixer, and then cooled to obtain mascara.

Example-15 Eyeshadow (Formulation) 1) Humic acid propyl acetate 62) Cetyl humate 63) Talc
54) Titanium dioxide
35) Pearl pigment
186) Carnauba Rou
107) Solid paraffin 58)
Lanolin derivatives 59) Squalane 2110) Glyceryl tri2-ethylhexanoic acid 20 ester 11) Sorvicunseschioleic acid ester 112)
Fragrance Appropriate amount (manufacturing method) 1) Add part of 9) and 11) to -5) and process in a colloid mill. Pigment part. The rest of 9) and 6)-8)
, 10) and 12) are added and dissolved by heating, and the pigment part is added to this and homogenized to disperse it uniformly. After dispersion, it was poured into a mold and rapidly cooled to obtain an eye shadow.

Claims (1)

[Claims] humic acid or nitrofumic acid and acid and/or
Cosmetics characterized by containing one or more selected from the group consisting of esters with alcohols.