JPH0648927A - Depilatory composition - Google Patents

Abstract

PURPOSE:To provide a depilatory composition capable of accomplishing easy depilation without any pain. CONSTITUTION:The depilatory composition made up of (A) a paste comprising a polysulfide polymer with specified average molecular weight, and each specified amount of a liquid ingredient and filler and (B) another kind of paste comprising each specified amount of a metallic oxide, peroxide, curing promoter, filter and liquid ingredient. For this composition, the pastes A and B are mutually mixed in its application.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a depilatory composition for removing waste hair from a cosmetic point of view. In particular, the hair-removing composition of the present invention is applied to a hair-removing portion to remove the lumps from the hair root portion at once, so that the hair can be completely removed with a small pain without pulling.

[0002]

2. Description of the Related Art Conventionally, there has been a strong desire for women, especially for women, to remove waste hair for cosmetic purposes, and various methods and materials have been provided for that purpose, but it is safe, simple, and can completely remove hair. The reality is that nothing has appeared. Generally, attach an adhesive to the tape and pull the hair with adhesive force,
It is something to pull out. This method is very painful because it pulls hair and cannot completely remove hair. The method of heat-melting and applying wax is also due to the adhesiveness of wax, and it has drawbacks that it is painful because hair is pulled and pulled out, hair loss is incomplete, and handling is difficult because it is heated.

In addition, there is a method of mechanically pulling out the hair or a jelly-like method, but there is a drawback that it causes considerable pain during hair removal. In addition, there are materials that can be applied with a depilatory cream to chemically decompose, soften and dissolve the hair, but they do not completely remove the hair and have drawbacks such as skin irritation. As mentioned above, there is no effective and effective depilatory which is easy to handle.

[0004]

The present invention focuses on a polysulfide rubber having a chemical structure similar to that of the hair, and has a compatibility with the hair, and the polysulfide rubber cured by wrapping the hair is peeled from the skin to remove the hair root. It provides a material that is completely removed from the area, relieves pain and is completely easier to handle. The present invention was created as a result of earnest research by focusing on polysulfide rubber having a high affinity for keratin of hair.

[0005] General structural formulas of polysulfide rubber polymer HS (R-S-S) 23 -R-SH - a. R is a _{C 2 H 4 -O-CH 2} -O-C 2 H 4. By adding a vulcanizing agent to this polysulfide polymer, the polymer chain is lengthened by the oxidation of the terminal mercapto group (SH group), and crosslinking is carried out by the oxidation of the mercapto group which appears sideways in the middle of the chain, Hardens into a rubber.

[0006]

[Chemical 1]

When the polysulphide polymer is cured from the skin by the hair removal composition according to the present invention, it penetrates into the inside of the hair and adheres to keratin to be cured into a rubbery shape, so that the hair is removed at once. Those having an average molecular weight of less than 1000 have high fluidity and are difficult to apply. If the average molecular weight exceeds 7500, the paste becomes extremely hard and difficult to handle. Therefore, the polysulfite polymer used in the present invention is limited to those having an average molecular weight of 1000 to 7500 and an average viscosity (27 ° C.) of 10 to 1100 poise.

If the blending ratio of the polysulfide polymer is less than 55% by weight of the A paste, the rubber strength will be insufficient, while if it exceeds 85% by weight, the hardness will be lowered. Therefore, the blending amount of the polysulfide polymer used in the present invention is limited to 55 to 85% by weight. The oxides and peroxides of the metal contained in the B paste as the curing agent are zinc oxide, zinc peroxide, lead peroxide, magnesium peroxide, calcium peroxide, manganese dioxide, and antimony trioxide, which are easy to handle and moderate curing Shows sufficient rubber strength. As the curing agent, one kind or two or more kinds of metal oxides and peroxides may be combined in any way, but if the compounding amount is less than 30% by weight, a complete rubber cured product cannot be obtained. Even if it exceeds 60% by weight, the effect of the curing agent is the same and is meaningless. Therefore, the compounding amount of the metal oxide and the peroxide as the curing agent is limited to 30 to 60% by weight.

The vulcanization accelerator of the present invention has a curing property at room temperature, and therefore, it is characterized by thiuram-based tetramethylthiuram monosulfide, tetramethylthiuram disulfide, tetraethylthiuram disulfide, tetrabutylthiuram disulfide, dipentamethylenethiuram tetrasulfide. Sulfide, thiazole-based 2-mercaptobenzothiazole, 2-benzothiazyl disulfide and dithiocarbamate-based zinc dimethyl dithiocarbamate,
Limited to diethyl diethyl zinc dithiocarbamate, zinc dibutyl dithiocarbamate, and zinc ethyl phenyl dithiocarbamate, which may be used alone or in any combination of two or more, but the blending amount in the B paste is 2% by weight. If it is less than 10% by weight, proper curing cannot be obtained at room temperature, and if it exceeds 10% by weight, the operating time is lost and reversion occurs. Therefore, the compounding amount of the vulcanization accelerator in the B paste is
It is limited to 2 to 10% by weight.

The filler is an inert inorganic component such as silica,
Titanium oxide, alumina, calcium carbonate, calcium sulfate, barium sulfate are suitable. 1 or 2 of these
Any combination of one or more kinds may be used, and the compounding amount that can be formed into the paste is limited to 10 to 40% by weight for the A paste and 2 to 30% by weight for the B paste. The liquid component is an inert liquid at room temperature. That is, dimethyl phthalate, diethyl phthalate, isobutyl phthalate, dibutyl phthalate, phthalate of dioctyl phthalate, dioctyl adipate, dioctyl azelate, dibutyl sebacate, dioctyl sebacate, butyl oleate, butyl stearate. Limited to oily components such as fatty acid ester, vegetable oil, chlorinated paraffin, liquid paraffin, etc., one kind or two or more kinds may be combined in any way. With A paste, viscosity is lowered to give easy kneading, and B paste is used. Then, it makes it possible to knead into a paste. Therefore, the liquid component is 1 to 10% by weight for the A paste and 20 to 50% for the B paste.
Limited to wt%. Further, it is preferable to add sulfur as a reaction aid to the depilatory composition of the present invention because the vulcanization reaction of the polysulfide polymer can proceed uniformly and a uniform cured product can be obtained. Sulfur as the reaction aid may be added to either the A paste or the B paste. In addition, it is possible to add known coloring agents, fragrances and the like which are usually used to the hair removing composition of the present invention.

[0011]

The present invention will be described below with reference to examples, but the invention is not limited thereto.

Example 1 A paste (% by weight) Thiokol LP-270 (polysulfide polymer, average molecular weight 4000, manufactured by Thiokol) Silica fine powder 10 Alumina fine powder 15 Dibutyl phthalate 3 Dioctyl azelate 2 Sulfur powder 0.5 The above components Was weighed, charged into a kneader, kneaded for 30 minutes, and kneaded into a paste to give an A paste.

B paste (% by weight) Zinc peroxide 12 Antimony trioxide 20 Tetramethylthiuram disulfide 4 Ethyl phenyl dithiocarbamate zinc 3 Silica fine powder 16 Chlorinated paraffin 35 Butyl stearate 10 Weigh the above components, The mixture was put into a kneading machine, kneaded for 60 minutes, and kneaded into a paste to obtain a B paste. Equal volumes of paste A and paste B were taken on kneading paper, and kneaded and mixed for 60 seconds using a plastic spatula. Curing time is 10
It was a minute.

Example 2 A paste (% by weight) Thiokol LP-358 (polysulfide polymer, average molecular weight 1000, manufactured by Thiokol) Calcium carbonate 20 Calcium sulfate 10 Barium sulfate 10 Dioctyl sebacate 2 Sulfur 0.2 Weigh the above components Then, the mixture was put into a kneader and kneaded for 50 minutes, and kneaded into a paste to obtain an A paste.

B paste (% by weight) Lead dioxide 45 Tetrabutylthiuram disulfide 2 Titanium oxide 28 Diethyl phthalate 3 Chlorinated paraffin 20 Butyl oleate 2 Weigh the above ingredients into a kneader and knead for 80 minutes. Then, the mixture was kneaded into a paste to obtain B paste. Equal volumes of paste A and paste B were taken on kneading paper, and kneaded and mixed for 60 seconds using a plastic spatula. Curing time is 1
It was 2 minutes.

Example 3 A paste (% by weight) Thiokol LP-31 82 (polysulfide polymer, average molecular weight 7500, manufactured by Thiokol) Titanium oxide 6 Alumina fine powder 2 Dioctyl phthalate 5 Dioctyl adipate 5 Sulfur 0.1 The above components Was weighed, charged into a kneader, kneaded for 30 minutes, and kneaded into a paste to give an A paste.

B paste (% by weight) Zinc oxide 40 Manganese dioxide 16 2-Benzothiazyl disulfide 1 Tetraethylthiuram disulfide 4 Calcium carbonate 4 Olive oil 5 Liquid paraffin 15 Dioctyl phthalate 15 Dioctyl phthalate 15 Weigh the above ingredients into a kneader The mixture was kneaded for 60 minutes and kneaded into a paste to obtain B paste. Equal volumes of paste A and paste B were taken on kneading paper, and kneaded and mixed for 60 seconds using a plastic spatula. Curing time is 1
It was 5 minutes.

Example 4 A paste (% by weight) Thiokol LP-3280 (polysulfide polymer, average molecular weight 4000, manufactured by Thiokol) Titanium oxide 16 Dibutyl phthalate 4 The above components were weighed and put into a kneading machine, and kneading for 40 minutes. And then
It was kneaded into a paste to give an A paste.

B paste (% by weight) Zinc oxide 40 Calcium carbonate 20 Tetramethylthiuram disulfide 6 Chlorinated paraffin 28 Dibutyl phthalate 6 Weigh the above ingredients into a kneader and knead for 60 minutes,
The paste was kneaded into a paste to prepare a B paste. Equal volumes of paste A and paste B were taken on kneading paper, and kneaded and mixed for 60 seconds using a plastic spatula. The curing time was 20 minutes.

Comparative Example 1 A commercially available depilatory wax was heated and melted to perform a depilation test.
I felt a lot of pain when it was hot and I lost my hair. The hair was still in a dehaired state.

Comparative Example 2 A commercially available adhesive depilatory tape was attached to the skin and peeled off to carry out a depilation test. When peeling or hair loss from the skin, the hair is pulled and the pain is extremely great. A lot of residual hair was observed in the hair loss state.

Comparative Example 3 A hair removal test was conducted by applying a commercially available hair removal foam to the skin.
Part of the skin was peeled off by wiping with a cotton ball. Although the hair root remained, the hair removal condition was almost good. However, waste hair grew quickly and returned to the state within a month.

As mentioned above, as shown in the comparative example, the conventional commercially available system is hot and difficult to handle.
Those having severe tension pain and those having hair removed by chemical treatment have important drawbacks such as the possibility of affecting the skin. As can be seen from the table, the hair removal composition according to the present invention has a slight pain, is easy to handle, has no skin peeling, is safe, lays down from the root of the hair, can be cleanly removed, and is a waste product. The hair is thin and it takes three months to return to its original state, and it is characterized by the delay in the growth of waste hair.

[0024]

[Table 1]

Measurement of curing time: temperature 23 ± 2 ° C., humidity 5
In a thermostatic chamber of 0 ± 10%, height 8.0 mm, inner diameter 24.
The sample was put into a stainless steel ring having a thickness of 0 mm and a thickness of 1.0 mm, and a Vickers needle (diameter: 3.
(0 mm), and when it could not be pierced to 1.0 mm or less, the curing time was calculated from the start of kneading. Effects on skin: Sensation / observation when used directly on the skin. Severity of hair loss: I hardly feel it. 2 Minor 3 Normal pain 4 Quite painful 5 Very painful Hair loss: Observing skin loss

[0026]

The feature of the present invention is that the whole hair is wrapped with a slight pain and the hair is removed from the root of the hair. Therefore, it takes a long time until the hair grows and the hair is kept in a good condition for a long time. Moreover, the effect of cleanly cleaning the skin surface is also recognized. In this way, it can be said that this was the first development of hair loss that has never been seen before.

Claims (7)

[Claims] 1. The A paste has an average molecular weight of 1,000 to 75.
00 liquid polysulfide polymer of 55-85 wt%, liquid component of 1-10 wt% and filler of 10-40
The B paste comprises 30 to 60% by weight of metal oxide and peroxide, 2 to 10% by weight of vulcanization accelerator, 2 to 30% by weight of filler, and 20 to 50% by weight of liquid component. %
A composition for depilation, which comprises a mixture of A paste and B paste and curing at room temperature. 2. The filler according to claim 1, wherein the filler contains one or more components selected from the group consisting of silica, titanium oxide, alumina, calcium carbonate, calcium sulfate and barium sulfate. Hair removal composition. 3. The liquid component is dimethyl phthalate, diethyl phthalate, isobutyl phthalate, dibutyl phthalate, dioctyl phthalate phthalate, dioctyl adipate, dioctyl azelate, dibutyl sebacate, dioctyl sebacate, oleic acid. The depilatory composition according to claim 1 or 2, which contains one or more components selected from the group consisting of butyl, a fatty acid ester of butyl stearate, vegetable oil, chlorinated paraffin, and liquid paraffin. object. 4. A metal oxide / peroxide selected from the group consisting of zinc oxide / zinc peroxide, lead peroxide, magnesium peroxide, calcium peroxide, manganese dioxide, and antimony trioxide. The hair removal composition according to any one of claims 1 to 3, which contains the above components. 5. A 2-mercaptobenzo compound wherein the vulcanization accelerator is a thiuram-based tetramethylthiuram monosulfide, tetramethylthiuram disulfide, tetraethylthiuram disulfide, tetrabutylthiuram disulfide, dipentamethylenethiuram tetrasulfide, or a thiazole-based 2-mercaptobenzo. Thiazole, 2-benzothiazyl disulfide, dithiocarbamate-based zinc dimethyl dithiocarbamate, zinc diethyl dithiocarbamate,
5. Hair removal according to any one of claims 1 to 4, characterized in that it contains one or more components selected from the group consisting of dibutyl zinc dithiocarbamate and zinc ethyl phenyl dithiocarbamate. Composition. 6. The depilatory composition according to claim 1, wherein sulfur is added as a reaction aid to either the A paste or the B paste. 7. The hair removing composition according to claim 1, wherein a colorant or a fragrance is added to either or both of the A paste and the B paste.