JPS6187610A - Cosmetic - Google Patents

Abstract

PURPOSE:To provide a cosmetic exhibiting moisturizing and UV-proofing effects and surface activity, and capable of remarkable reducing the amount of other surfactant, by using a water-soluble ester of humic acid or nitrohumic acid as a component of natural origin. CONSTITUTION:One or more water-soluble esters of humic acid or nitrohumic acid prepared by reacting humic acid or nitrohumic acid with an acid, polyhydric alcohol, alkylene oxide, etc. under a proper condition are used as the components of the objective cosmetic. The amount of the ester is 0.0001-50wt%, preferably 0.01-10wt% based on the cosmetic. It can be used in the form of skin lotion, milky lotion, cream, pack, foundation, lipstick, eye shadow, hair dressing cosmetic, perfumery cosmetic, etc.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a novel cosmetic that contains a water-soluble ester of humic acid or nitrofumic acid, and has a moisturizing effect and an ultraviolet absorbing effect. It is something to do.

[Prior Art] Moisturizers added to cosmetics are known to have the effect of keeping the skin healthy and improving skin quality, and are one of the important ingredients of cosmetics. Substances used as humectants for cosmetics include glycerin, propylene glycol, sorbitol, and sodium pyrrolidone carboxylate.

Furthermore, ultraviolet absorbers have the effect of absorbing ultraviolet rays that cause sunburn, skin cancer, and skin aging, and include ethyl para-aminobenzoate, hydroxybenzophenone, benzyl cinnamate, and the like.

[Problems to be Solved by the Invention] As described above, the properties of moisturizers and ultraviolet absorbers are important for cosmetics. In view of the above circumstances, the present inventors conducted extensive research to obtain natural raw materials with characteristic usefulness such as moisturizing properties and ultraviolet absorption properties, and as a result, coincidentally, a water-soluble ester of humic acid or nitrofumic acid was discovered. By blending the ester into a cosmetic base, the inventors have found that this problem can be solved at the same time.Furthermore, it has been surprisingly discovered that the ester also has surfactant ability, leading to the completion of the present invention.

c. Means for Solving Problems] That is, the present invention is a cosmetic composition characterized by containing one or more selected from the group consisting of water-soluble esters of humic acid or nitrofumic acid.

The water-soluble ester of humic acid or nitrofumic acid used in the present invention is one obtained by reacting humic acid or nitrofumic acid with a, a polyhydric alcohol, or an alkylene oxide.

Humic acid is a plant-derived organic acid extracted from natural soil, grass charcoal, peat, etc. with water, aqueous alkaline solution, etc., and has a molecular weight of several hundred to several million. Furthermore, nitrofumic acid is extracted by applying nitric acid during extraction and oxidizing it with nitric acid. These humic acids and nitrohumic acids are solids having a black to brown color depending on the soil from which they are extracted, and have a carboxyl group and an alcoholic hydroxyl group in the molecule.

To obtain a water-soluble ester of humic acid or nitrofumic acid, humic acid or nitrofumic acid is reacted with an acid, a polyhydric alcohol, or an alkylene oxide under appropriate conditions.

Acids according to the present invention include sulfuric acid, sulfuric anhydride, fuming wm, chlorosulfonic acid, sulfamic acid, phosphoric acid, phosphorus pentoxide, phosphorus oxychloride, phosphorus trichloride, etc., and polyhydric alcohols include sorbitol, polyethylene glycol, etc. , polyvinyl alcohol, and as the alkylene oxide, ethylene oxide, propylene oxide, etc. are suitable. Especially when reacted with acids,
It may be neutralized in any proportion with a suitable alkali.

In the present invention, among the water-soluble esters of humic acid or nitrohumic acid, the total content of one or more of the water-soluble esters of humic acid or nitrophic acid is 0.0001 to 50% (hereinafter referred to as %) in the cosmetic, preferably 0.01 to 10%. It is. If it is less than 0.0001%, sufficient moisturizing effect or ultraviolet absorption effect cannot be obtained, and if it exceeds 50%, it is difficult to adjust the color tone.

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

The formulation of the cosmetics of the present invention is arbitrary, and includes facial cosmetics such as lotion, milky lotion, cream, and bags, body cosmetics, makeup cosmetics such as foundation, lipstick, and eye shadow, hair cosmetics, It can also be used in aromatic cosmetics.

[Effects of the Invention] The cosmetic of the present invention has two effects: a moisturizing effect and an ultraviolet protection effect, by incorporating natural raw materials such as water-soluble esters of humic acid or nitrofumic acid. Because the compound also has surfactant ability, it is a cosmetic that can significantly reduce the amount of other active agents added.

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

Example-1 Polyethylene glycol humate was made into a 5% aqueous solution, and 0.2 ml of this was applied to a 1 cm x 1 am filter paper,
The evaporation rate of water was measured from the change in weight of the filter paper at 25° C. and 50% humidity.

Comparative example-1 The evaporation rate of water was measured under the same conditions as in Example-1.

The results of Example-1 and Comparative Example-1 are shown in Table-1. In the aqueous solution of polyethylene glycol humate, the evaporation rate of water is suppressed, indicating that polyethylene glycol humate has a moisturizing effect.

Example 2 The absorbance of a 0.01% aqueous solution of sodium humate sulfate was measured using a quartz cell with an optical path length of 1 cm.

Water was used as a reference. The results are shown in Table-2. It can be seen that the sodium humate sulfate aqueous solution has a strong ultraviolet absorption effect.

Example-3 The surface tension of a 5% aqueous solution of sodium phosphate humate is 2
Measured at 5°C. As a result, 45dy n/c
A surface tension of m was obtained, indicating that there is surface activity.

Example-4 Lotion (ingredients) 1) Glycerin 32) Propylene glycol 43) Dipropylene glycol 44) Oleyl alcohol 0
．． 15) Polyoxyethylene (20 mol) 0.1 sorbitan monolaurate 6) Polyoxyethylene (20 mol) 0.1 lauryl alcohol ether 7) Ethyl alcohol 15.08) Purified water 72.69) Humic acid phosphate ester 1.010) Fragrance
0.111) Preservatives
Appropriate amount (manufacturing method) Add 1)-3) and 9) to 8) and dissolve at room temperature.

Dissolve and use as aqueous phase. Also 4)-6) and 10), 11
) is added to 7) and dissolved at room temperature to obtain the alcohol part. An alcohol part was added to the aqueous phase, mixed and solubilized, and filtered to obtain a lotion.As a result, a lotion with a moisturizing effect and an ultraviolet absorbing effect was obtained.

Example-5 Emulsion (ingredients) 1) Stearic acid 2.52) Cetyl alcohol 1.53) Vaseline
5.04) Liquid paraffin
10.05) Polyoxyethylene (10 mol) 2.0 monooleate 6) Polyethylene glycol 1500 3,07) Triethanolamine 1.08) Purified water
73.59) Tulbitol Nitrohumate 1.010) Fragrance
0.511) Preservative
Appropriate amount (manufacturing method) 8) and 6)? ), 9) and heat to dissolve.
Keep at ℃ to form aqueous phase. 1)-5) and 10)11)
are mixed, heated to melt and kept at 70°C to form an oil phase.

The oil phase was added to the water phase and uniformly emulsified using a homomixer. After emulsification, the mixture was cooled to 30° C. with stirring to obtain a milky lotion.

Example-6 Bag (ingredients) 11Ei [Vinyl resin emulsion 3 resin 15.02) Polyvinyl alcohol 10.03) Polyvinyl alcohol humate 10.04) Ethyl alcohol
10.05) Purified water
55.06) Fragrance: Appropriate amount 7) Preservative: Appropriate amount (manufacturing method) Moisten 2) with a part of 4), add 5) to this, and make 70.
℃. This is stirred day and night to form a solution.
The next day, 1) and 3) were added, and while stirring well, the remainder of 4) and the mixture of 6) and 7) were added and stirred to form a uniform paste to obtain a pack.

Example-6 Cream (ingredients) l) Stearyl alcohol 7.02) Stearic acid 2.03) Hydrogenated lanolin 2.04) Squalane
5.05) Octyldodecyl alcohol 6.06) Polyoxyethylene (25 mol)
3,0 cetyl alcohol ether 7) Glyceryl monostearate 2.0 ester 8) Propylene glycol 5.09) Purified water 67.0]0) Potassium nitrofumate sulfate 0.211) Ammonium humate 0.812) Fragrance
Appropriate amount 13) Antioxidant, preservative Appropriate amount (manufacturing method) 8)-11) are heated and dissolved at 70°C to form an aqueous phase. 1)-7), 12), and 13) were heated and dissolved at 70°C.
and the oil phase. The oil phase was gradually added to the water phase while stirring and emulsified, and then the mixture was uniformly emulsified using a homomixer and cooled while stirring to obtain a cream.

Claims (1)

[Claims] Cosmetics characterized by containing one or more selected from the group consisting of water-soluble esters of humic acid or nitrofumic acid.