JPS6045841B2 - cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cosmetic composition containing a novel base, and an object of the present invention is to provide a cosmetic composition that has excellent color, odor, stability, and usability, and is of constant quality. shall be.

Typical low melting point waxes conventionally used in cosmetics include lanolin and petrolatum.

Lanolin has high affinity, adhesion, and wettability for the skin, and also has excellent water-holding and emulsifying power.
Although it has been used in many cosmetics including basic cosmetics and makeup cosmetics, it has disadvantages as a cosmetic raw material in terms of color and odor. Furthermore, since it is a natural product, its price fluctuates widely even though its quality remains constant, and it has the property of becoming rancid over a long period of time, so its use directly in cosmetics has decreased significantly in recent years. For this reason, derivatives are used as cosmetic raw materials by extracting some of the constituent components of lanolin or reacting them with other substances to retain the properties and reduce the defects. Despite these modifications, essential drawbacks still remain. On the other hand, petrolatum is colorless, odorless, chemically inert, has strong adhesive properties, and has an oily property, so it is used in various cosmetics such as creams, lipsticks, and ticks.

However, since petrolatum is a hydrocarbon, it has drawbacks such as not being soluble in castor oil, which is an important raw material for cosmetics, and having low dissolving power for drugs.

In view of this situation, the present inventors have conducted extensive research and found that the products obtained by esterifying trimethylolethane or Solpit with a monobasic acid and a dibasic acid have the above-mentioned drawbacks, and that they do not have the characteristics of both. I found out that it has both.

This product has excellent affinity for the skin, adhesion, and wettability. It is colorless, odorless, and chemically inert. It has an appropriate adhesive strength, is highly compatible with waxes, and is compatible with castor oil. It has excellent properties such as complete dissolution and high dissolving power for drugs, making it suitable as a base for cosmetics. The present invention was completed based on the above-mentioned findings.

That is, the present invention combines (1) trimethylolethane or Solpit with (2) one of straight chain fatty acids, branched fatty acids, unsaturated fatty acids, or hydroxy fatty acids having 8 to 22 carbon atoms.
species or two or more species and (3) one or two products obtained by esterification with a linear and/or branched dibasic acid having 12 to 20 carbon atoms in an amount not more than 112 times the mole of (1). This cosmetic is characterized by containing more than one species.

Next, the configuration and effects of the present invention will be explained in detail.

First, by reacting a straight chain, branched, unsaturated, hydroxy fatty acid having 8 to 22 carbon atoms and a straight chain, branched dibasic acid having 12 to 20 carbon atoms with trimethylolethane or sorbitol in the present invention. The obtained mixed ester has a structure represented by the following general formula [1] as a main component, but
In addition, it also includes those with a network structure and those with a cyclic structure.

(In the formula, x represents an alkylene group derived from a linear and/or branched dibasic acid having 12 to 20 carbon atoms. Y represents a polyhydric alcohol (trimethylolethane, sorbit) residue and/or a carbon number of 8 to 20. 22 represents the ester residue of polyhydric alcohol (trimethylolethane, sorbitol) made of straight chain fatty acids, branched fatty acids, unsaturated fatty acids, and hydroxy fatty acids.) Next, each raw material component in the present invention will be explained. Monobasic acid used in the present invention has 8 to 2 carbon atoms
2 was specified because hydrolytic stability, skin irritation, and usability were considered.

That is, when a monobasic acid having less than 8 carbon atoms is used, there are disadvantages such as poor hydrolytic stability and skin irritation, and inability to obtain viscosity. The reason why a dibasic acid having 12 to 20 carbon atoms was used is as follows.

(1) Reduce skin irritation by increasing the molecular weight of the product.

(2) When a dibasic acid having 6 or fewer carbon atoms is used, the target compound cannot be obtained in a one-step reaction.

In this case, when polyhydric alcohols (trimethylolethane, sorbit) are reacted with monobasic acids and dibasic acids at the same time, the polyhydric alcohols (trimethylolethane, sorbit) and dibasic acids react selectively and polymerize. Things are generated. Therefore, to obtain the desired compound, first synthesize an ester of a polyhydric alcohol (trimethylolethane, sorbit) and a monobasic acid, and then remove the unreacted polyhydric alcohol (trimethylolethane, sorbit). Since dibasic acids must be reacted, at least two stages of reaction are required.

This tendency is slightly observed even when dibasic acids with 8 to 10 carbon atoms are used, but this does not occur when dibasic acids with 12 to 20 carbon atoms are used, and the desired reaction can be achieved in one step. compound can be obtained. (3) Not only when a dibasic acid is not used, but even when a dibasic acid is used, when the number of carbon atoms is less than 12, it is impossible to impart the viscosity and stiffness characteristic of lanolin and petrolatum.

(4) When a dibasic acid is used, the number of hydroxyl groups per molecule of the product increases, so the polarity can vary widely depending on the degree of esterification.

Therefore, it is possible to synthesize an optimal polar compound according to the formulation. (5) Since the molecular weight of the dibasic acid is large, the starting materials do not volatilize even if the reaction temperature is raised.

Straight chain, branched, unsaturated, hydroxy fatty acids with 8 to 22 carbon atoms include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, 2-ethylhexanoic acid, neotridecanoic acid, isostearic acid, oleic acid, Examples include 12-hydroxystearic acid.

Straight-chain and branched dibasic acids having 12 to 20 carbon atoms include dodecanoic acid, tetradecanoic acid, hexadecanoic acid, octadecanoic acid, eicosanniic acid, 7-ethylocdecanoic acid, and the like.

In addition, the known technology regarding esters consisting of polyhydric alcohols, monobasic acids, and dibasic acids is disclosed in Japanese Patent Publication No. 51-2.
7447, JP-A-51-79731, JP-A-52-66
637, and the technique described in Japanese Patent Application Laid-Open No. 54-3522.

However, since all of the dibasic acids used in these known techniques have a carbon number of about 1, the above-mentioned (1)
, (2), (3), and (5), it is difficult to say that this is completely satisfactory. The mixed ester in the present invention is a polyhydric alcohol (trimethylolethane, sorbitol).
is obtained by esterifying with monobasic acid and dibasic acid by a known method.

Esterification includes, for example, a method using an acid halide, a transesterification method, and synthesis of a polyhydric alcohol (trimethylolethane, sorbitol) ester of a monobasic acid under normal pressure or reduced pressure in the absence of a catalyst or in the presence of a catalyst. , a method of esterifying with a dibasic acid, the complete opposite method, and a method of esterifying by simultaneously reacting a polyhydric alcohol (trimethylolethane, sorbit), a monobasic acid, and a dibasic acid, etc. From an economic point of view, a method in which a polyhydric alcohol (trimethylolethane, sorbitol), a monobasic acid and a dibasic acid are reacted simultaneously is desirable. Next, an example of synthesis of mixed ester in the present invention will be shown.

Synthesis Example 1 Polyhydric alcohol, monobasic acid, dibasic acid, xylene, and baratoluenesulfonic acid were each added to a four-bottle flask equipped with a stirrer, a thermometer, a nitrogen gas suction tube, and a water separator, based on the total amount charged. 5%, 0.2% added, 150-25
The reaction was carried out at 0° C. until the calculated amount of water was collected in the water separator, and after the reaction was completed, deodorization and decolorization were carried out in a conventional manner.

Table 1 shows the compounds of the present invention synthesized by the above method.

In addition, the odor of the polyhydric alcohol ester shown in Table 1,
Test results for tackiness and solubility evaluation. The results are shown in Table 2.

(a) 10 g of the compound shown in Table 2 is melted at 70° C., 0.1 ml of a 5% W/■ ethanol solution of linalool is added, and the mixture is stirred for 1 minute.

0.1 g of the solution was applied to the inner side of the forearm while being left to reach room temperature, and the odor upon application and adhesion to the skin were evaluated. The odor evaluation is based on the following criteria. 3. No smell of raw materials.

2. There is a slight smell of raw materials.

1 I can smell the raw materials.

0 There is a strong raw material odor.

(The numerical values shown in Table 2 are the average values of the evaluations of 10 expert panelists.

) Skin adhesion evaluation is based on the following criteria.

4 Very good.

3 Good.

2 Normal.

1 Bad.

0 Very bad.

(The numerical values shown in Table 2 are the average values of the evaluations of 10 expert panelists.

) (b) Castor oil? Compounds in Table 2? was added and stirred at 70°C, and the state was observed.

0...Dissolved transparently.

×...Does not dissolve.

(c) According to Synthesis Example 1, glycerin (a). 4 mol), isostearic acid (manufactured by Emery, USA, 0.4 mol) and sebacic acid (A). It was a viscous liquid with an acid value of 1.8.

(d) According to Synthesis Example 1, 0.5 mol of sorbitol, 0.5 mol of oleic acid, and 0.5 mol of palmitic acid were reacted, and the melting point was 18 and the NOCl acid value was 19.1.

(e) These compounds with high melting points were evaluated by the following method.

Melt 10 g of the compound in Table 2 at 70°C, and melt 5 g of linalool.
Add 0.1 ml of %W/V ethanol solution and stir for 1 minute.

After being left to stand until it reached room temperature, the odor of each compound was evaluated by a 4-step method by a panel of 10 experts. The odor evaluation is based on the following criteria. (The numerical values in Table 2 are the average values of the evaluations of 10 expert panelists.

)3 No odor of raw materials is detected.

2. There is a slight smell of raw materials.

1 I can smell the raw materials.

0 There is a strong raw material odor.

As is clear from the above test results, the polyhydric alcohol ester used in the present invention has excellent solubility and is odorless, making it optimal as a raw material for cosmetics.

Next, the cosmetic composition containing the polyhydric alcohol ester according to the present invention will be specifically explained with reference to Examples.

Example 1 Cream part A (aqueous phase part) Propylene glycol 5.0% purified water
30.0B part (oil phase part)
Polyhydric alcohol ester (No.4 in Table 1) 8.0
Beeswax 10.0 Cetyl Alcohol 5.0 Squalane
37.5 Stearic acid monoglyceride 2.01 Polyoxyethylene (20 mol)
Zorbitan L monolaurate 2
．． 0 Fragrance 0.5 Preservative/Antioxidant Mix appropriate amount of Part A 7
Keep at 0℃.

Next, part B is mixed, heated and dissolved, and kept at 70°C. Pre-emulsify by adding part B to part A, and homogeneously emulsify with a homomixer.
After emulsification, stir while cooling. This cream had good adhesion to the skin and had a thick feel.

Example 2 Emulsion Part A (aqueous phase) Polyethylene glycol 1500 3.0% Triethanolamine 1.0 Purified water
74.5B part (oil phase part) Polyhydric alcohol ester (No.7 in Table 1) 5.0 Stearic acid
2.5 cetyl alcohol
1.5 liquid paraffin
10.0 polyoxyethylene (10 mol) 2
．． 0 monooleate fragrance
0.5 Preservative appropriate amount A
Mix the parts and keep at 70°C.

Next, part B is mixed, heated and melted, and maintained at 70°C. Pre-emulsify by adding part B to part A, uniformly emulsify with a homomixer, and cool to 30°C while cooling after emulsification. This emulsion blended well into the skin and had a moist feel. Example 3 Lipstick titanium dioxide 5.0% red 20
No. 4 0.6 Daidai 20
No. 3 1.0 Red No. 223
0.2 Kyandelilla Row
7.0 Solid paraffin 8
．． 0 Polyhydric alcohol ester (No.5 in Table 1) 2
．． 0 Polyhydric alcohol ester (NO.O5.O carnauba wax in Table 1) 2.0 Castor oil
59.2 Isopropyl myristate 10.0 Fragrance
Appropriate amount of antioxidant
Appropriate amount of titanium dioxide, red No. 204, orange 2
Add No. 03 to a portion of castor oil and process with a roller (pigment part).

Dissolve Red No. 223 in a portion of castor oil (dye part).
After mixing the other ingredients and heating and dissolving them, add the pigment part and dye part and uniformly disperse with a homomixer. After dispersion, pour into molds and cool. This lipstick had excellent adhesion to the lips.
Example 4 Lip-grown titanium oxide 0.5% red 20
No. 4 0.2 Ozokerite
5.0 solid paraffin
7.0 polyhydric alcohol ester (N in Table 1
O. 3) 20.0 polyhydric alcohol ester (N in Table 1
O. 2) 30.0 castor oil
27.3 Isopropyl myristate 10
．． 0 Fragrance Appropriate amount Antioxidant Appropriate amount Titanium dioxide and Red No. 204 are added to a portion of castor oil and processed with a roller (pigment section).

After mixing the other ingredients and heating and dissolving them, add the pigment part and uniformly disperse with a homomixer. After dispersion, pour into molds and cool. This lip glow had excellent adhesiveness and gloss when applied to the lips.

Example 5 Foundation kaolin 10.0% titanium dioxide 15.0 zinc white
8.0 iron oxide (red)
2.0 iron oxide (yellow)
4.7 Iron oxide (black) 0
．． 3 Solid paraffin 5.0 Polyhydric alcohol ester (No.l in Table 1) 6.0 Polyhydric alcohol ester (No. 6 in Table 1) 6.0 Octyldodecyl myristate 11.0 Liquid paraffin
30.0 Sorbitan Sesquiolate 2.0 Fragrance
Appropriate amount of preservatives and antioxidants
Mix appropriate amounts of titanium dioxide, zinc white, and iron oxide and process in a pulverizer (powder section).

A part of liquid paraffin and sorbitan sesquiolate are added to the powder part and uniformly dispersed with a homomixer, and the other ingredients are added by heating and melting, and the mixture is filled into a container and cooled to 40°C.
This foundation had strong adhesion and did not cause makeup to come off easily. Further, there was no precipitation of preservatives or antioxidants.
Example 6 Part A polyhydric alcohol ester (No. 4 in Table 1) 15.0
% Beeswax 12.0 Mokuro 10.0 Castor oil
59.0 Antioxidant
Appropriate amount of Part B fragrance
4.0% dye
Mix an appropriate amount of part A and heat to dissolve.

Part B is added to this, poured into a mold, and cooled. This chitsuku had extremely good hair styling ability.

Example 7 Pomade A part Polyhydric alcohol ester (No.l in Table 1) 3.0
% Castor oil 88.0 Mokuro 7.0 Antioxidant
Appropriate amount of Part B fragrance
2.0% dye
Mix an appropriate amount of part A and heat to dissolve.

Add part B to this and cool. This pomade had excellent hair styling properties.

Note that No. 1 in Table 1. In place of the polyhydric alcohol ester of No. 1 in Table 1, Pomades were prepared using the above formulation using 2-7 polyhydric alcohol esters and the control compounds in Table 2.

The hair styling ability when using the obtained pomade was evaluated as 10.
The results were evaluated using a five-point scale by a panel of experts.

The results are shown in Table 3. Evaluation of hair styling ability is based on the criteria below.

4 very good 3 Good 9 Song chant 1 bad 0 very bad The numerical values shown in Table 3 are the average values of the evaluations of 10 people.

It is clear that the pomade according to the invention is superior to the control compound.

Example 8 Shampoo lauryl polyoxyethylene (3 mol) Sodium sulfate (30% aqueous solution) 30.0% Sodium lauryl sulfate (30% aqueous solution) 15.0 Ethylene glycol monostearate 3.0 Lauroyl diethanolamide 2.0 Polyhydric Alcohol ester (
No. 1 in Table 1. 3) 1.0 protein derivative
3.0 Purified water
46.0 Fragrance, appropriate amount of dye, appropriate amount of preservative,
Ultraviolet absorber/metal ion sequestering agent
Heat an appropriate amount of purified water, add other ingredients to it, dissolve, stir well, and then leave to cool.

This jumper had a smooth finish.

Example 9 Rinse stearyltrimethylammonium chloride
2.0% cetyl alcohol 2.0% silicone oil
2.0 Polyhydric alcohol ester (No.6 in Table 1) 1.0 Polyoxyethylene (10 mol)
oleyl ether
1.0 Glycerin 5.
0 Protein derivative 2.0 Purified water
85.0 fragrance
appropriate amount of dye
Appropriate amount of preservatives and UV absorbers
Add glycerin, protein derivative, and dye to an appropriate amount of purified water, dissolve by heating, and keep at 70°C (aqueous phase).

Mix other ingredients (a), heat and melt and maintain at 70°C (oil phase). Add the water phase to the oil phase and stir well. Thereafter, the mixture is further stirred while cooling. This conditioner gave the hair flexibility and natural shine.

Claims (1)

[Claims] 1 Trimethylolethane or sorbitol 2 One or more types of straight chain fatty acids, branched fatty acids, unsaturated fatty acids, or hydroxy fatty acids having 8 to 22 carbon atoms, and 3 1/2 times the mole or less per 1 A cosmetic comprising one or more products obtained by esterification with a linear and/or branched dibasic acid having 12 to 20 carbon atoms.