JPS63222106A - Saccharide ether-containing cosmetic - Google Patents

Abstract

PURPOSE:To obtain a cosmetic such as cream or shampoo, having excellent chemical stability and mild properties to the skin, containing a specific sugar ester having cleaning properties, dispersibility, emulsifiability and touch improving properties. CONSTITUTION:A cosmetic such as cream, lotion, milky lotion, rinse, treatment, foundation, hair agent, perfume, stick and detergent, containing a sugar ester shown by formula I (A is residue after removal of n OH groups from disaccharide or trisaccharide except maltitol; R<1> and R<2> are H, alkyl or alkenyl; sum of R<1> and R<2> is 6-24C; n is >=1 and is number <=50% number of OH groups existing disaccharide and trisaccharide except maltitol). The sugar ether shown by formula, for example, is obtained by reacting a saccharide (e.g. sucrose) with a compound (e.g. 6C straight-chain 1,2-epoxyalkane) shown by formula II.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to sugar ether-containing cosmetics. More specifically, the present invention relates to a sugar ether-containing cosmetic that has excellent chemical stability and is gentle on the skin.

(Problems to be solved by conventional technology/invention) Conventionally, nonionic surfactants, especially nonionic surfactants that do not contain nitrogen atoms as constituent atoms, have been used in large quantities as ingredients in cosmetics. has been done.

Typical examples of the nonionic surfactants that do not contain a nitrogen atom include those containing low molecular weight oxyalkylene groups such as oxyethylene groups and oxypropylene groups as polyoxyalkylene groups, glycerin, pentaerythritol, sorbitan, Examples include higher fatty acid partial esters of polyhydric alcohol type compounds such as sorbitol and sucrose.

While nonionic surfactants containing low molecular weight oxyalkylene groups have the advantage of being able to adjust the HLB range widely and arbitrarily, they generally decompose over time and have stinging properties compared to low molecular weight aldehydes. The problem is that cosmetics using this material tend to be irritating and toxic.

For example, if a nonionic surfactant of the higher fatty acid partial ester type of a polyhydric alcohol type compound such as sorbitan partial ester, which is a sugar long chain fatty acid partial ester currently widely used, is used as a component of cosmetics. In particular, when used as an ingredient in cosmetics that contain water and have a pH deviating from neutrality, the ester bonds are likely to decompose, causing problems such as stability over time and skin irritation.

Furthermore, when polyoxyalkylene ester-based emulsifiers are used as emulsifiers, in addition to decomposition of ester bonds, problems may occur due to aldehydes as mentioned above, and there is a limit to the shelf life of cosmetics, that is, the shelf life and storage period. Easy to occur.

Furthermore, recently, especially in the cosmetics industry, it is required that the quality of surfactants be constant and that their functions be clear.
There is a tendency to seek something as pure as possible, and from this point of view, nonionic surfactants made from mixtures of various polyols are not preferred.

The present invention was made in order to solve the above-mentioned problems associated with conventionally used nonionic surfactants.

[Means for solving problems]

The present invention is based on the general formula (I): (wherein A is a residue obtained by removing n hydroxyl groups from a sugar belonging to the disaccharide or trisaccharide order other than maltitol, R1 and R
2 is a hydrogen atom, an alkyl group, or an alkenyl group, the total number of carbon atoms of R1 and R2 is 6 to 24, n is a number of 1 or more, and it is a sugar belonging to disaccharides or trisaccharides other than maltitol. The present invention relates to a cosmetic containing a sugar ether whose number is 50% or less of the number of hydroxyl groups present.

[Example] The sugar ether used in the present invention has the general formula (I): (wherein,
A is a residue obtained by removing n hydroxyl groups from a sugar belonging to a disaccharide or trisaccharide other than maltitol, R1 and R2 are both a hydrogen atom, an alkyl group, or an alkenyl group, and R1
and the total number of carbon atoms in R2 is 6 to 24, n is 1
The above numbers represent 50% or less of the number of hydroxyl groups present in sugars belonging to disaccharides or trisaccharides other than maltitol.

Specific examples of sugars belonging to the disaccharide order other than maltitol include sucrose, maltose, lactose, cellbiose, gentibiose, sucrose, etc.
Specific examples of sugars belonging to trisaccharides include raffinose, gentibiose, maltotriose, maltotriitol, which is a partially reduced product of maltotriose, panose, and isonurtotriose.

The sugar ether used in the present invention does not contain sugar ethers derived from monosaccharides or tetrasaccharide or higher sugars, but since monosaccharides have a hydroxyl group number of 6 or less, they are etherified and used as surfactants. This is because only those with relatively low hydrophilicity can be obtained, and also because sugar ethers from tetrasaccharide or higher sugars are difficult to obtain at low cost with few impurities. It is.

01 which is a specific example of R1 and R2 other than hydrogen atoms
-C24 alkyl and alkenyl groups include, for example, methyl group, ethyl group, isopropyl group, butyl group, octyl group, lauryl group, palmityl group, stearyl group,
Examples include 2-ethylhexyl group, isostearyl group, oleyl group, palmitoleyl group, and eicosenyl group.

In the compound represented by general formula (I), residue A is a moiety that primarily exhibits hydrophilicity, and the moiety bonded to residue A is a moiety that primarily exhibits hydrophobicity.
Neither 1 nor R2 is a hydrogen atom,
The total number of carbon atoms in R1 and R2 is at least 06 to C
24, and either R1 or R2 is CI2 to C+
It is preferably a group of s, and n is a number of 1 or more,
50% or less of the number of hydroxyl groups present in sugars belonging to disaccharides or trisaccharides other than maltitol, preferably 1 to 2
is the number of

When R1, R2, and n are out of the above range, general formula (1)
The balance between hydrophilicity and hydrophobicity in the sugar ether represented by is disrupted, making it difficult to dissolve in water and narrowing the range of use as an active agent.

Furthermore, if the sum of the carbon atoms of R1 and R2 is larger than C2a, it will be difficult to obtain it commercially and the reactivity will decrease when producing the compound represented by general formula (1). , making sugar ether production difficult.

The sugar ether represented by the general formula CI) can be obtained by the method described in Japanese Patent Application No. 180989/1989 by the present inventors.
It is produced by a method of reacting a sugar with a compound represented by the general formula (I): υ (wherein R1 and R2 are the same as above).

From the viewpoint of reactivity, it is generally preferable for either RL or R2 to be a small group, and preferably a hydrogen atom.

The sugar ether obtained in this way has functions such as detergency, dispersibility, emulsification, solubilization, and texture-improving properties, so it can be used as an ingredient in various cosmetics and can be decomposed. Because it does not contain oxyalkylene groups or polyoxyalkylene groups that easily generate aldehydes, or ester bonds that are easily hydrolyzed, it has excellent chemical stability. When cosmetics are produced using surfactants instead of surfactants, cosmetics having the above-mentioned characteristics can be produced.

Note that the term "cosmetics" as used herein refers not only to cosmetics under the Pharmaceutical Affairs Law, but also to products used for cosmetics even if they belong to quasi-drugs or medicines, such as creams, lotions, etc.
The concept includes shampoos, emulsions, conditioners, treatments, foundations, hair products, perfumes, sticks, cleaning products, etc.

Next, the cosmetics of the present invention will be explained based on Examples.

Synthesis Example 1 50 g of sucrose and 150 g of dimethyl sulfoxide were placed in a flask, heated and dissolved at 100° C., and dehydrated for about 15 minutes by blowing dry nitrogen gas. After adding 0.3 g of tetraethylammonium hydroxide to this, 16 g of linear 1,2-epoxy alkane having 6 carbon atoms was added.
(1/1 molar ratio of sucrose/epoxyalkane) was added,
The reaction was carried out at 120° C. for 8 hours with vigorous stirring.

After the reaction, neutralize the catalyst and add dimethyl sulfoxide under reduced pressure.
The residue was almost completely distilled off at 80° C., the residue was extracted with 99% ethanol to remove unreacted sucrose, and the ethanol was further distilled off to obtain 60 g of crude hydroxyalkyl sucrose ether.

When this crude product was divided using silica gel column chromatography using n-hexane and then acetone as developing solvents, a very small amount of epoxyalkane was observed as the initial n-hexane fraction, and the main component was the acetone fraction. (yield: 55 g) (hereinafter referred to as sucrose ether 1).

In thin layer chromatography using a mixed solvent of chloroform:methanol:acetic acid:water-s,o; 10:8:2 (volume ratio) as a TLC developing solvent,
It was of high purity, showing 1 spot.

Furthermore, analysis by the Griffin method revealed that approximately 10% (approximately 1 hydroxyl group) of sucrose was etherified.

Synthesis Example 2 50jj of sucrose and 150g of dimethyl sulfoxide were placed in a flask, heated and dissolved at 100°C, and dehydrated for about 15 minutes by blowing dry nitrogen gas. After adding 0.5 g of sodium hydroxide to this, carbon atoms of 18 and I
35 g of a mixture of straight chain 1,2-epoxyalkane B in a weight ratio of 1/1 (sucrose/epoxyalkane in a molar ratio of 1/1)
1) was added and reacted at 120°C for 8 hours with vigorous stirring.

After the reaction, neutralize the catalyst and add dimethyl sulfoxide under reduced pressure.
The residue was almost completely distilled off at 80° C., the residue was extracted with 99% ethanol to remove unreacted sucrose, and the ethanol was further distilled off to obtain crude hydroxy long-chain alkyl sucrose ether 7i.

When this crude product was divided using silica gel column chromatography using first n-hexane and then acetone as developing solvents, a very small amount of epoxyalkane was recognized as the initial n-hexane fraction, and the main component was the acetone distillate. (Yield: 5170g) (hereinafter referred to as sucrose ether 2).

This product is of high purity, showing 1 spot in thin layer chromatography using a mixed solvent of chloroform:methanol:acetic acid:water-80:10:8:2 (volume ratio) as a TLC developing solvent. It was.

Furthermore, analysis by the Grff'fin method revealed that about 12% (about 1 hydroxyl group) of sucrose was etherified.

Synthesis Example 3 50 g of maltose was dissolved in 150 g of N-methylpyrrolidone, dried and dehydrated in the same manner as in Synthesis Example 1, and then 0.5 g of sodium hydroxide was added as a catalyst to dissolve linear 1,2- The weight ratio of epoxy alkane is 1
After adding 27 g of a 1/1 mixture (maltose/epoxyalkane molar ratio of 1/1), the mixture was reacted at 120°C for 5 hours. Thereafter, the solvent was almost completely distilled off at 80°C under reduced pressure, and methyl ethyl ketone/saturated saline-50150
(volume ratio) was added to a two-phase system liquid, stirred, and then allowed to stand still to separate the layers. The separated methyl ethyl ketone layer was dehydrated with anhydrous soap and filtered, and the methyl ethyl ketone was distilled off to obtain crude hydroxyalkyl maltose ether 89.
g (hereinafter referred to as maltose ether 1).

According to analysis by the Gr1ffin method, about 12% (about 1 hydroxyl group) of the maltose hydroxyl groups in the obtained maltose ether 1 had been etherified.

Synthesis Example 4 50g of lactose was dissolved in 150g of N-methylpyrrolidone, dried and dehydrated in the same manner as in Synthesis Example 1, and then 0.8g of sodium ethoxide was added as a catalyst to obtain a carbon atom having 16 carbon atoms.
After adding 35 g of a mixture of 18 straight-chain 1,2-epoxyalkanes in a weight ratio of 1/1 (lactose/epoxyalkane in a molar ratio of 1/1), the mixture was reacted at 100° C. for 5 hours. Thereafter, the solvent was almost completely distilled off at 80°C under reduced pressure, and methyl ethyl ketone/saturated saline-50/
It was added to a two-phase liquid of 50% (volume ratio) and stirred, then allowed to stand still to separate the layers. The separated methyl ethyl ketone layer was dehydrated with anhydrous soap and then filtered, and the methyl ethyl ketone was distilled off to obtain 80 g of crude hydroxyalkyl lactose ether (hereinafter referred to as lactose ether 1).
.

- The obtained lactose ether 1 is about 12% (about 1 hydroxyl group) of lactose according to the analysis by the Griffin method.
was etherified.

Synthesis Example 5 100 g of raffinose was mixed with 150 g of N-methylpyrrolidone.
g and dried and dehydrated in the same manner as in Synthesis Example 1, followed by sodium hydroxide. After adding Or as a catalyst and adding 60 g of a mixture of linear 1,2-epoxyalkanes having 20 and 22 carbon atoms in a weight ratio of 1/1 (raffinose/epoxyalkane in a molar ratio of 1/1), 120
The reaction was carried out at ℃ for 5 hours. Thereafter, the solvent was almost completely distilled off at 80° C. under reduced pressure, and the mixture was added to a two-phase solution of methyl ethyl ketone/saturated saline-50150 (volume ratio), stirred, and left to separate into layers. The separated methyl ethyl ketone layer was dehydrated with anhydrous filtrate and filtered, and the methyl ethyl ketone was distilled off to obtain 155 g of crude hydroxyalkyl raffinose ether (hereinafter referred to as raffinose ether 1).

The obtained raffinose ether 1 is about 9% (about 1 hydroxyl group) of raffinose according to analysis by the Griffin method.
was etherified.

Synthesis Example 6 100 g of gentianose was mixed with 150 g of dimethyl sulfoxide.
After drying and dehydrating in the same manner as in Synthesis Example 1, 1.0 g of sodium hydroxide was added as a catalyst, and the weight ratio of linear 1,2-epoxyalkanes having 8 and 10 carbon atoms was 1/1. After adding 25 g of the mixture (kentianose/epoxyalkane in a molar ratio of 1/1), the mixture was heated to 120°C.
The reaction was carried out for 5 hours. Thereafter, the solvent was almost completely distilled off at 80° C. under reduced pressure, and the mixture was added to a two-phase solution of methyl ethyl ketone/saturated saline-50150 (volume ratio), stirred, and left to separate into layers. The separated methyl ethyl ketone layer was dehydrated and filtered using anhydrous soap, and the methyl ethyl ketone was distilled off to obtain 120 g of crude hydroxyalkyl raffinose ether (hereinafter referred to as gentianose ether 1).

The obtained gentianose ether 1 was analyzed by the Griffin method, and it was found that about 9% (about 1.0%) of the hydroxyl groups of gentianose were etherified.・Synthesis Example 7 100 g of maltotriose was mixed with 1 part of N-methylpyrrolidone.
After drying and dehydrating in the same manner as in Synthesis Example 1, 1.0 g of sodium hydroxide was added as a catalyst, and the weight ratio of linear 1,2-epoxy alkanes having 12 and 14 carbon atoms was 1/1. After adding 39 g of a mixture (maltotriose/epoxyalkane in a molar ratio of 1/1),
The reaction was carried out at 120°C for 5 hours. After that, under reduced pressure, 80
The solvent was almost completely distilled off at °C, and the mixture was added to a two-phase solution of methyl ethyl ketone/saturated saline-50150 (volume ratio), stirred, and allowed to stand still to separate the layers. The separated methyl ethyl ketone layer was dehydrated with anhydrous filtrate and filtered, and the methyl ethyl ketone was distilled off to obtain 125 g of crude hydroxyalkyl maltotriose ether (hereinafter referred to as maltotriose ether 1).

The obtained maltotriose ether 1 is Griffin
According to analysis using the method, approximately 9% of the hydroxyl groups in maltotriose (
Approximately 1 piece) was etherified.

Synthesis Example 8 100 g of maltotriitol was dissolved in 150 g of dimethyl sulfoxide, dried and dehydrated in the same manner as in Synthesis Example 1, and then 0.5 g of sodium hydroxide was added as a catalyst to form a straight chain 1.2 with a carbon number IB and 18. - After adding 50 g of a mixture of epoxyalkanes in a weight ratio of 1/1 (maltotriitol/epoxyalkane in a molar ratio of 171), the mixture was reacted at 120°C for 5 hours. After that, under reduced pressure, 8
The solvent was almost completely distilled off at 0°C, and methyl ethyl ketone/
It was added to a two-phase solution of saturated saline-5015G (volume ratio), stirred, and then left to separate into layers. The separated methyl ethyl ketone layer was dehydrated and filtered using anhydrous soap, and the methyl ethyl ketone was distilled off to obtain 180 g of crude hydroxyalkyl maltotriitol ether (hereinafter referred to as
maltotriitol ether 1).

The obtained maltotriitol ether 1 is Griffl
According to analysis using the n method, approximately 9 of the hydroxyl groups of maltotriitol
% (approximately 1 piece) was etherified.

Reference Example 1 (Hydrolyzability) A 1% aqueous solution of each of the sugar ethers obtained in Synthesis Examples 1 to 8 was heated at 90° C. for 5 hours, but almost no hydrolysis was observed in any of the samples.

On the other hand, commercially available sucrose laurate (approximately 10% (approximately 1) of the hydroxyl groups of sucrose is esterified),
As shown in the table, about 20% decomposition of the ester group was observed under the same conditions.

In addition, as shown in Table 1, in commercially available polyethylene glycol (PEG) lauric acid ester, decomposition of about 2% of ester groups was observed.

The degree of hydrolysis was determined by taking a certain amount of the cooled aqueous solution, extracting it with ethyl ether, and determining the neutralization titer of the extract. When emulsifying during the extraction process,
Ethanol was added, layer separation was performed, and titration was performed.

Reference Example 2 (Oxidizing) Each of the sugar ethers given in Synthesis Examples 1 to 8 was heated to 80°C.
After leaving it on the container for 100 hours, each sample 5
g was collected. After that, 500 ml of water and 3 ml of diluted phosphoric acid were added and distilled until the distillate amount was 190 ml.
Distillation was stopped when the concentration reached 1, water was added to make 200 ml, and this was used as a test solution.

Take 10 ml of this test solution and add 5 ml of acetylacetone.
ml was added, shaken, and heated in a 60°C water bath for 10 minutes. After cooling, the absorbance at a maximum absorption wavelength around 420 nm was measured, but as shown in Table 1, no aldehyde was observed.

On the other hand, when polyethylene glycol laurate was similarly treated and evaluated, the presence of aldehyde was observed as shown in Table 1.

Furthermore, even if sucrose lauric acid ester was treated in the same manner instead of sucrose ether 1 and evaluated, as shown in Table 1,
Archito's presence was not recognized.

[Margin below]

Example 1 and Comparative Example 1 Using sucrose ether 2 obtained in Synthesis Example 2 and manthotriitol ether 1 obtained in Synthesis Example 8, a cosmetic cream base having the following formulation was prepared.

(Cream base formulation) (%) Liquid paraffin #70 20 cetanol
10 Maltotriitol ether 10.5 Sucrose ether 23.0 Hydroxyethyl cellulose 0.5 Propylene glycol 4.0 Purified water
The remaining cream base was O/W type, not oily, and had very smooth properties, and did not change at all even after being stored for 5 months.

Further, even when stored at 30° C. for 100 hours, there was almost no hydrolysis, and when evaluated in the same manner as in Reference Example 2, no aldehyde was observed.

On the other hand, when the same test as in Reference Example 2 was conducted using polyethylene glycol laurate diester instead of sucrose ether 2 and polyethylene glycol oleate diester instead of maltotriitol ether, the presence of aldehyde was observed.

Example 2 and Comparative Example 2 Using maltose ether 1 obtained in Synthesis Example 3, a shampoo having the following formulation was prepared.

(Shampoo formulation) (%) Maltose ether 1 15.0 Triethanolamine e Lauryl sulfate 10.0 Imidacillin type amphoteric surfactant (Amogen manufactured by Daiichi Kogyo Seiyaku ■) 4) 25.0 Lauric acid diethanolamide 5.0 Flavorings, preservatives, pigments Appropriate amounts of purified water
30% of the remaining amount of shampoo
℃, I) H-8,5, There was almost no hydrolysis even when stored under the conditions of 5,100 hours, and even when treated and evaluated in the same manner as in Reference Example 2, the presence of aldehyde was barely detected. I couldn't.

On the other hand, when polyethylene glycol oleate diester was used instead of maltose ether 1, aldehyde was found to be present when the same test as in Reference Example 2 was conducted.

Example 3 and Comparative Example 3 Using the raffinose ether 1 obtained in Synthesis Example 5, a lotion with the following formulation was prepared.

(Lotion formulation) (%) Glycerin 4.0 Propylene glycol 4.0 Oleyl alcohol
0.1 Raffinose ether 11.5 Ethanol 8.0 Fragrance
Material Trace amount of methyl parahydroxybenzoate 0.3 Purified water Even if the remaining amount of raw scene was stored under the conditions of 30°C, 9H distillate, and 5.100 hours, there was almost no hydrolysis, and the same as in Reference Example 2. Even when evaluated, almost no aldehyde was detected.

On the other hand, when polyethylene glycol 400 oleic acid monoester was used instead of raffinose ether 1, aldehyde was found to be present when the same test as in Reference Example 2 was conducted.

Example 4 and Comparative Example 4 Using gentianose ether 1 obtained in Synthesis Example 6, a milky lotion having the following formulation was prepared.

(Emulsion formulation) (%) Stearic acid 2.0 cetanol
1,5 Vaseline
2.0 lanolin alcohol 2.
0 Liquid paraffin 1 O90 Gentianose ether 12.0 Glycerin 4.0 Triethanolamine 1.0 Fragrance, preservative
Micro-purified water Even if the remaining amount of emulsion was stored under the conditions of 30°C, pH-8, 5, 100 hours, there was almost no hydrolysis, and Reference Example 2
Even when evaluated in the same manner as above, almost no aldehyde was detected.

On the other hand, in the case where polyethylene glycol lauryl acid diester was used instead of gentianose ether 1,
When the same test as in Reference Example 2 was conducted, aldehyde was found to be present.

Example 5 and Comparative Example 5 Maltotriose ether 1 obtained in Synthesis Example 7 was used to prepare a rinse with the following formulation.

(Rinse prescription) (%) Stearyltrimethylammonium chloride 2.0 Lanolin alcohol 3.0 Propylene glycol
5.0 citric acid
0.1 Maltotriose ether 11.0 Fragrance, preservative Micro-purified water Even if the remaining rinse is stored at 30℃, pH-8, 5, 100 hours, there is almost no hydrolysis. Even when treated and evaluated in the same manner as in Reference Example 2, almost no aldehyde was observed.

On the other hand, when polyethylene glycol 400 oleic acid monoester was used instead of maltotriose ether 1, aldehyde was found to be present when the same test as in Reference Example 2 was conducted.

Example 6 and Comparative Example 6 Using maltotriitol ether 1 obtained in Synthesis Example 8, a hair styling product having the following formulation was prepared.

(Hair conditioner formulation) (%) Liquid paraffin 15.0 Lanolin alcohol 2.1 Maltotriitol ether I
B, 0 Lauric acid diethanolamide 3.0 Purification
Water Even if the remaining hair conditioner was stored at 30°C and pH -8, 5, for 100 hours, there was almost no hydrolysis, and when evaluated in the same manner as in Reference Example 2, almost no aldehyde was present. I was not able to admit.

On the other hand, when polyethylene glycol oleate diester was used instead of maltotriitol ether 1, aldehyde was found to be present when the same test as in Reference Example 2 was conducted.

Example 7 and Comparative Example 7 Using raffinose ester 1 obtained in Synthesis Example 5, a foundation with the following formulation was prepared.

(Foundation prescription) (%) Stearic acid 2.8 Liquid paraffin
25.0 Triethanolamine
1.4 propylene glycol 1o,
0 Raffinose ether 15.0 Titanium oxide 6.0 Bentonite 10.0 Pigment (iron oxide)
Minor fragrances, preservatives
Micro-purified water
The remaining foundation was heated to 30℃, pH-8,
Even when stored under conditions of 5,100 hours, there was almost no hydrolysis, and when evaluated in the same manner as in Reference Example 2, almost no aldehyde was produced.

On the other hand, when polyethylene glycol lauryl diester was used instead of raffinose ether 1, aldehyde was found to be present when the same test as in Reference Example 2 was conducted.

Example 8 and Comparative Example 8 Using maltose ether 1 obtained in Synthesis Example 3, a perfume with the following formulation was prepared.

(Perfume formulation) (%) Ethyl alcohol 40.0 Fragrance
5.0 Maltose ether 11.5 Water 5
3.5 total
100.0 perfume at 30℃, pl-8,5,
Even when stored for 100 hours, there was almost no hydrolysis, and when evaluated in the same manner as in Reference Example 2, almost no aldehyde was observed.

On the other hand, when polyethylene glycol 400 oleic acid monoester was used instead of maltose ether 1, aldehyde was found to be present when the same test as in Reference Example 2 was conducted.

[Effects of the Invention] The sugar ether used in the cosmetics of the present invention does not have a low molecular weight oxy-1 alkyl group or an ester group, so it is chemically stable and does not easily hydrolyze. , no aldehyde is generated. Therefore, cosmetics using this sugar ether have similar characteristics, are less irritating to the skin, and have an excellent feel as a cosmetic.

Claims (1)

[Claims] 1. General formula (I): ▲Mathematical formulas, chemical formulas, tables, etc.▼(I) (In the formula, A represents n hydroxyl groups from a sugar belonging to a disaccharide or trisaccharide other than maltitol. The removed residues, R^1 and R^2, are all hydrogen atoms, alkyl groups, or alkenyl groups, and the total number of carbon atoms of R^1 and R^2 is 6 to 2.
4, n is a number greater than or equal to 50, which is the number of hydroxyl groups present in sugars belonging to disaccharides or trisaccharides other than maltitol.
Cosmetics containing sugar ether expressed as % or less.