JPS6019886B2 - Make-up cosmetic remover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a makeup remover that does not irritate the skin when used and is stable over time and has excellent effects.

It is well known that in recent years, efforts have been made to develop makeup cosmetics that do not remove makeup easily, and that many cosmetics are on the market with abbreviations such as "waterproof" and "water resistant."

On the other hand, in parallel with the development of the above-mentioned cosmetics, efforts are also being made to develop removers that can remove the cosmetics without causing excessive irritation, but at present, compared to the development of makeup cosmetics, Therefore, consideration in this field is lagging behind. That is, the current situation is that there are many products that have a contradictory effect on removal effect and skin safety, such that low-irritant removers have poor removal effects, and excellent removers have poor skin safety.

Conventional makeup removers include aqueous solution type,
There are various types such as emulsion type, oily (liquid) type, oil wax type (solid), etc., but it has excellent removal effect without irritating the skin, and is also excellent in stability and usability. There are no compositions available.

When removing makeup cosmetics called "waterproof" and "water resistant",
Of the four types mentioned above, it goes without saying that the oily type and oil wax type have excellent removal effects, but since the oily type can easily get into your eyes, it is usually used by dropping it onto cut cotton, etc. It is not suitable for removing foundations that have a wide area.

On the other hand, ordinary oil-wax types have poor stability over time and are prone to perspiration, so this is prevented by designing the hardness of the composition to increase the softening point.

As a result, the soft feel of emulsified products is lost, and when applying makeup, it is necessary to mash it in the palm of your hand before washing your face. Although this drawback can be avoided if the hardness of the composition is designed to be soft, a fatal drawback arises, such as sweating over time. The inventors of the present invention have conducted intensive research to satisfy the conflicting conditions of removal effect, skin safety, stability over time, and usability, and have found a structure with a limited number of carbon atoms of 17 to 36.
By blending organically modified montmorillonite and hydrous alcohol with one or more types of monoester or gestel, gelling it, and then adding a high melting point wax, it has excellent removal effects and is easy to use. The inventors discovered that it was possible to obtain a highly stable make-up remover that does not cause sweating over time, and thus completed the present invention.

Next, the structural effects of the present invention will be explained.

The carbon number of monoester and gester used in the product of the present invention is 17 to 36, preferably 23 to 28.

When the number of carbon atoms is 16 or less, the irritation to the skin is strong, and when the number of carbon atoms is 36 or more, the removal effect is poor. The compounds constituting the ester in the present invention include alcohol, fatty acid,
It is selected from dibasic acids and glycols, and may be saturated or unsaturated, linear or branched.

Examples of wastes in the present invention include the following.

There are monoesters consisting of fatty acids and alcohols, gestels consisting of dibasic acids and alcohols, and gestels consisting of glycols and fatty acids. Alternatively, a gestal comprising a saturated aliphatic glycol and a saturated fatty acid is preferred. More specific examples of compounds include isopropyl myristate, isopropyl palmitate, decyl myristate, myristyl myristate, 2 palmitate.
-ethylhexyl, oleyl caprate, cetyl 2-ethylhexanoate, 2-octyldecyl 2-ethylhexanoate, 2-octyldodecyl 2-ethylhexanoate, isostearyl isostearate, oleyl isovalerate,
Alcohols and fatty acids such as 2-ethylhexyl isostearate, isostearyl neodecanoate, octyl oleate, isooctyl linoleate, didecyl adipate, di-2-ethylhexyl sebacate, diethyl 7-ethyl octadecanedioate, diisopropyl 7-ethyl octadecanedioate, or Monoesters or gesters of dibasic acids, ethylene glycol dilaurate, neobentyl glycol dioctanoate, neobentyl glycol didecanoate, neobentyl glycol dinonanoate,
Examples include diesters of glycol and fatty acids such as hexylene glycol diisodecanoate and neobentyl glycol diisodecanoate. These esters can be obtained by subjecting the relevant alcohol and fatty acid or dibasic acid, and glycol and fatty acid to a conventional esterification reaction.

The blending amount is required to be 20 to 9% by weight in order to exhibit the removal effect, and if it is less than 2% by weight, the effect cannot be exhibited. Organically modified montmorillonite, which acts as a stabilizer over time and as a wax hardening inhibitor, has a high base substitution ability.

It is made by performing organic substitution on night to give it organophilic properties, and is also called organic pentonite. As the organic compound, fatty amine salts such as octadecylamine acetate, and quaternary ammonium salts such as dimethyldioctadecylammonium salt and dimethylbenzylalkylammonium salt are used, but when used in the present invention, quaternary ammonium Salt is preferred. Alternatively, a composite product of a nonionic trough compound such as fatty acid amide and trimethyloctadecyl ammonium salt may be used. The blending amount is preferably 1 to 1% by weight. A stabilizing effect cannot be exhibited at a concentration of 1% by weight.

Even if it exceeds 1% by weight, a stabilizing effect is exhibited, but it is not necessary for practical use. Hydrous alcohols are hydrated lower alcohols such as methanol, ethanol, propanol, and isopropanol.

Hydrous alcohol has the effect of swelling organically modified montmorillonite, and has a 30%
Amounts between 100% and 100% by weight are suitable. If it is less than 3% by weight, swelling will not occur, and if it exceeds 10% by weight, it will not be sufficient in terms of stability of product quality, irritation, odor, etc.

The water content is "5 to 4% by weight in the hydroalcohol.

Even if it is less than 5% by weight or more than 4% by weight, organically modified montmorillonite cannot be swollen.

In addition, the wax used as a solidifying agent is preferably blended in a ratio of 5 to 6% by weight, with a high melting point (7
0-95oo) The stability is better when using wax. Examples of waxes include mineral waxes such as ceresin, vaseline, solid paraffin, and microcrystalline waxes, animal and vegetable waxes such as carnauba wax, candelilla wax, and millo wax, and synthetic waxes such as polyethylene.

Furthermore, other components include hydrocarbons having 17 or more carbon atoms, silicones, oils such as esters having 17 or more carbon atoms other than the esters of the present invention, surfactants such as petrolatum, polyoxyethylene derivatives, cellulose derivatives, vinyl A polymer compound such as a compound, an amino acid ester, a sugar ester, a heat insulating agent, a fragrance, a coloring agent, a preservative, etc. are added as necessary.

The makeup remover of the present invention is obtained by adding wax to a mixture of the specific ester of the present invention, organically modified montmorillonite, and hydrous alcohol, and solidifying the mixture. If hot filling is used, a make-up remover containing hydrous alcohol can be obtained;
If a natural disintegration method is used, a makeup remover containing little or no hydroalcohol can be obtained. Next, the present invention will be explained in detail with reference to examples.
Using a device similar to 2896, apply 0.2 T of the remover to the movable member, and uniformly apply the test substance (S Company Nacco Liner) to the test member, and apply it 50 times with a load of 53.2 days/ground. I judged it by how it fell when it was moved back and forth.

○: Effective ×: No effect Also, the cumulative irritation to guinea pig skin was determined when the test substance was 0.3M.
(Paste and solid forms take 0.5 days) to be applied to normal skin, and the skin reaction is determined after 2 feeding hours.

After that, the test substance was further applied to the same area twice every 24 hours at a dose of 0.3 mm (0.5 mm for paste and solid forms), and the skin reaction was determined after 7 hours of 3 applications in total, as shown below. The evaluation was performed using numbers with meaning. 1.9 or less: slight irritation or almost no irritation 20 or more: moderate or low irritation .

The temperature conditions were 500, RT. 370, cycle test (5
~400CI twice a day), and the changes over time were investigated for 2 months. Judgment was evaluated using the following symbols. ○: Pass ×: Fail The manufacturing method of Example 1 is to disperse organically modified montmorillonite in the oil part, add and disperse hydrous alcohol, add the wax part, heat and melt, and uniformly disperse the wax part. A make-up cosmetic remover was obtained by a hot filling method, a hot filling method after thinly dispersing raw hydrous alcohol, and a hot filling method followed by natural volatilization.

Further, Examples 2 to 6 were produced by the method of Example 1 above.

Comparative Examples 1 to 7 were also produced by the same method as the method of Example 1. In Comparative Example 8, a wax part was added to an oil part, heated to melt and disperse, and then filled with heat to produce a make-up cosmetic remover. And so.

In either case, fragrances, coloring agents, preservatives, and other additives mentioned above may be included as necessary. The results are shown in Tables 1 and 2. The blending amount is in parts by weight. Table 1 Table 2 As is clear from Table 1, the makeup remover according to the present invention has an excellent removal effect, causes almost no skin irritation, and is stable over time.

Claims (1)

[Scope of Claims] 1. A make-up cosmetic remover comprising one or more monoesters or diesters having 17 to 36 carbon atoms, organically modified montmorillonite, and wax. 2. A make-up cosmetic remover comprising one or more monoesters or diesters having 17 to 36 carbon atoms, organically modified montmorillonite, hydrous alcohol, and wax. 3. A method for producing a make-up cosmetic remover, which comprises adding wax to a mixture of one or more monoesters or diesters having 17 to 36 carbon atoms, organically modified montmorillonite, and hydrous alcohol, and solidifying the mixture. 4. A makeup product characterized by adding wax to a mixture of one or more monoesters or diesters having 17 to 36 carbon atoms, organically modified montmorillonite, and hydrous alcohol, solidifying the mixture, and then volatilizing the hydrous alcohol. A method for producing a cosmetic remover.