JPH09255524A - Cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic capable of imparting light feeling free from tackiness to skin and hair and excellent long-term moisture-retaining effect to skin and hair by combinedly using a specific glycol and a specific glycerol derivative. SOLUTION: This cosmetic is obtained by combinedly using a glycol of the formula (R1 and R2 are each H or a 1-10C alkyl) with a propylene oxide adduct of diglycerol. 3-Methyl-1,3-butanediol, 2-methyl-2,4-pentadiol, etc., is used as the glycol of the formula and the glycol may alone be used or may be used in combination of two or more kinds of glycols. The blend amount is preferably 0.1-40wt.%, especially preferably about 0.5-40wt.%. The propylene oxide adduct of diglycerol is obtained by adding propylene oxide to dimer of glycerol and mol number added is preferably 2-30, especially preferably 5-20 and the blend amount is preferably 0.5-20wt.%, especially preferably about 1-10wt.%. The cosmetic can retain moistened and comfortable feeling over a long time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic which gives skin and hair a light feeling without stickiness and an excellent moisturizing effect for a long time.

[0002]

2. Description of the Related Art Conventionally, many cosmetics which are expected to have a moisturizing effect on the skin and hair are commercially available. Most of such cosmetics are blended with various water-soluble polyhydric alcohols having excellent water retention and water absorption. However, cosmetics containing these water-soluble polyhydric alcohols have a moisturizing effect, but have a greasy and heavy feel, and thus are inferior in usability and are not preferable in terms of sensory aspects. In addition, cosmetics containing a general-purpose water-soluble polyhydric alcohol such as propylene glycol, 1,3-butylene glycol, and glycerin have a drawback that the moisturizing effect is poorly maintained.

[0003]

DISCLOSURE OF THE INVENTION The present invention overcomes the drawbacks of the conventional cosmetics, gives a light feeling without stickiness, and imparts an excellent moisturizing effect to the skin and hair for a long time. The purpose is to provide cosmetics.

[0004]

Means for Solving the Problems The present inventors have conducted various studies to develop a cosmetic composition (in particular, a hair cosmetic composition) having the above-mentioned preferable properties, and as a result, have identified a specific glycol and a specific glycerin derivative. It has been found that a cosmetic composition having a light feeling without stickiness and having an excellent moisturizing effect for a long time can be obtained by using together with, and thus completed the present invention.

That is, according to the present invention, there is provided a cosmetic comprising a glycol represented by the following general formula (I) and a propylene oxide adduct of diglycerin.

Embedded image (R ₁ and R ₂ in the formula are each a hydrogen atom or a carbon number of 1 to
The 10 alkyl groups may be the same or different from each other. )

The glycol represented by the above general formula (I) used in the present invention includes 3-methyl-1,3-butanediol, 2-methyl-2,4-pentadiol and 3-ethyl-1,3-. Butanediol, 2-ethyl-2,4-
Pentadiol, 3-isopropyl-1,3-butanediol, 2-isopropyl-2,4-pentadiol,
3-t-butyl-1,3-butanediol, 3-butyl-1,3-butanediol and the like can be mentioned. Among them, 3-methyl-1,3-butanediol and 2-methyl are particularly preferable from the viewpoint of exhibiting effects. -2,4-pentadiol and 3-ethyl-1,3-butanediol are preferred. These glycols may be used alone or in combination of two or more.

In the cosmetics of the present invention, these glycols are usually selected in the range of 0.1 to 40% by weight, preferably 0.5 to 40% by weight, based on the total amount of the cosmetics.
If this amount is less than 0.1% by weight, a light feel without stickiness cannot be sufficiently obtained, and the moisturizing effect is insufficiently maintained, and if it exceeds 40% by weight, the expression of a heavy feel with stickiness is avoided. I can't.

The propylene oxide adduct of diglycerin used in the present invention can be obtained by adding propylene oxide to a dimer of glycerin and has an addition mole number of 2 to 30, particularly 5 to 20. Is preferred. If the number of added moles is less than 2, an oily feeling may not be exhibited, and if it exceeds 30, the hydrophobicity may be increased and it may be difficult to dissolve in water. Such a polyoxypropylene adduct of diglycerin can be easily obtained by addition-polymerizing propylene oxide with diglycerin as described in JP-A-53-15435.

In the cosmetic of the present invention, the content of these propylene oxide adducts of diglycerin is usually 0.5 to 20% by weight, preferably 1 based on the total amount of the cosmetic.
It is selected in the range of 10 to 10% by weight. If it is less than 0.5% by weight, a light feel without stickiness is not sufficiently exerted, and the moisturizing effect is insufficient, and if it exceeds 20% by weight, a heavy feel with stickiness is developed, which is not preferable.

In addition to the above-mentioned essential components, the cosmetic composition of the present invention may contain, if desired, various additive components commonly used in conventional cosmetic compositions within a range that does not impair the object of the present invention. it can.

Examples of the additive component include polymers for setting anionic polymer resin, nonionic polymer resin, amphoteric polymer resin, etc., cationic surfactants, anionic surfactants, nonionics. Surfactant, amphoteric surfactant, highly polymerized silicone, polyether modified silicone,
Silicone oils such as amino-modified silicones, organic acids such as citric acid and succinic acid and salts thereof, amino acids such as glycine and alanine, bactericides, ultraviolet absorbers, higher alcohols, animal and vegetable oils, hydrocarbons, ester oils, colorants, Fragrance,
Examples thereof include solvents (ethanol, water, etc.), fatty acids and the like. These additive components may be used alone or in combination of two or more, and may be blended at an appropriate stage of cosmetic preparation.

[0012]

EFFECTS OF THE INVENTION Since the cosmetic composition of the present invention has the above-mentioned constitution, unlike the conventional cosmetic composition, it gives a light-feeling finish without stickiness, and is excellent in moisturizing for a long time on the skin and hair. Since the effect is imparted, the moist and pleasant feeling is maintained for a long time, which is of extremely high practical value. Therefore, the cosmetics of the present invention can be widely used in hair styling foams, hair sprays, hair gels, hair cosmetics such as hair creams, and also skin creams, emulsions, lotions and the like.

[0013]

Next, the present invention will be described in more detail by way of examples. The amount of each component is% by weight. Example 1, Comparative Examples 1-4

The hair cosmetics shown in Table 1 were prepared and evaluated for their moisturizing effect (moisturizing feeling), their sustainability and lack of stickiness. The results are also shown in Table 1. (1) Moisturizing effect (moisturizing effect) A hair bundle (30 cm, 10 g) is washed and rinsed with shampoo, water is removed with a dry cotton cloth, 0.5 g of a sample is applied, and combing is sufficiently performed. Furthermore, after air-drying for 3 hours in a constant temperature / humidity chamber at 25 ° C. and 65% RH, sensory evaluation was performed by 10 professional evaluators according to the following criteria. 3 points: considerably moist compared to the uncoated hair bundle 2 points: slightly moist compared to the uncoated hair bundle 1 point: almost the same as the uncoated hair bundle And a weighted average was calculated and displayed according to the following criteria. ⊚: Average score of 2.5 or more ○: Average score of 2.0 to less than 2.5 Δ: Average score of 1.5 to less than 2.0 ×: Average score of less than 1.5 (2) No stickiness The hair bundle used for the evaluation of the moisturizing effect (moisturizing feeling) was organoleptically evaluated by 10 professional evaluators according to the following criteria. 3 points: It is almost the same as the hair bundle not coated with the sample and no stickiness is felt. 2 points: A little stickiness is felt compared to the hair bundle not coated with the sample. 1 point: Clearly compared with the hair bundle not coated with the sample. There is stickiness. Furthermore, a weighted average of the evaluation points was calculated for each sample and displayed according to the following criteria. ⊚: Average score of 2.5 or more ○: Average score of 2.0 to less than 2.5 Δ: Average score of 1.5 to less than 2.0 ×: Average score of less than 1.5 (3) Moisturizing effect ( Moisture feeling) The hair bundle used for evaluation of the moisturizing effect (moisturizing feeling) is further left to stand in a constant temperature / humidity room at 25 ° C and 65% RH for 24 hours after application of the sample. evaluated.

[0015]

[Table 1]

Example 2 Hair Styling Foam A hair styling foam having the following composition was prepared and its moisturizing effect (moisturizing feeling), its durability and non-stickiness were evaluated in the same manner as in Example 1, and all evaluation items were evaluated. It was ◎. Amphoteric polymer resin * 4% 3-methyl-1,3-butanediol 10% Polyoxypropylene (14) diglyceryl ether 4% Polyoxyethylene (10) -methylsiloxane copolymer 2% Polyoxyethylene (40) Hydrogenated castor oil 1% oxybenzosulfonic acid 0.1% methylparaben 0.1% ethanol 20% fragrance 0.5% liquefied petroleum gas 8% purified water balance *: N-methacryloyloxyethyl N, N-dimethylammonium-α- N-methyl carboxybetaine / methacrylic acid alkyl ester copolymer (Diachem Co., Yukaformer AM-75 510)

Example 3 Hair Styling Gel A hair styling gel having the following composition was prepared and its moisturizing effect (moisturizing feeling), its durability and non-stickiness were evaluated in the same manner as in Example 1, and all evaluation items were evaluated. It was ◎. Polyvinylpyrrolidone (K-30) 2% Amphoteric polymer resin * 3% 2-Methyl-2,4-pentadiol 5% Polyoxypropylene (4) diglyceryl ether 4% Polyoxyethylene (10) -Hethyl polysiloxane Copolymer 2% Carboxyvinyl polymer 0.5% Triethanolamine 0.4% Polyexethylene (20) Isocetyl ether 0.5% Polyoxyethylene (30) Hydrogenated castor oil 0.3% Sodium bisulfite 0. 2% Dihydroxybenzophenone 0.1% Disodium edetate 0.1% Perfume 0.3% Ethanol 10% Purified water Balance *: N-methacryloyloxyethyl N, N-dimethylammonium-α-N-methylcarboxybetaine methacryl Acid alkyl ester copolymer (Diachem Co., Ltd. Former AM-75 301)

Example 4 Hair Spray A hair spray having the following composition was prepared and its moisturizing effect (moisturizing feeling), its durability and non-stickiness were evaluated in the same manner as in Example 1, and all the evaluation items were ◎. there were. Amphoteric polymer resin * 4% 2-amino-2-methyl-1-propanol 0.8% 3-methyl-1,3-butanediol 5% polyoxopropylene (20) diglyceryl ether 2% polyoxyethylene (10 ) Sorbitan monolaurate 0.5% Coconut oil fatty acid diethanolamide 0.5% Perfume 0.5% Ethanol 40% Liquefied petroleum gas 40% Purified water balance *: Octylamide acrylate / Hydroxypropyl acrylate / Butylamino methacrylate Ethyl copolymer (Kanebo NSC, Unformer 28-4910)

Example 5 Emollient Cream An emollient cream having the following composition was prepared and its moisturizing effect (moisturizing feeling), its durability and non-greasiness were evaluated in the same manner as in Example 1.
Met. Beeswax 2% Paraffin wax 3% Liquid paraffin 5% Stearic acid 3% Polyoxypropylene (14) diglyceryl ether 2% 3-Methyl-1,3-butanediol 2% Behenyl alcohol 3% Polyoxyethylene (10) sorbitan monostea Rate 1% Polyoxyethylene (40) sorbitan tetraolate 2% Coconut oil fatty acid diethanolamide 0.5% Methylparaben 0.1% Propylparaben 0.1% Perfume 0.5% Purified water balance

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C07C 31/20 9155-4H C07C 31/20 B 9155-4H Z C08G 65/28 NQP C08G 65/28 NQP C08K 5/05 C08K 5/05 C08L 71/02 LQC C08L 71/02 LQC

Claims (1)

[Claims] 1. A cosmetic comprising a glycol represented by the following general formula (I) and a propylene oxide adduct of diglycerin. Embedded image (R ₁ and R ₂ in the formula are each a hydrogen atom or a carbon number of 1 to
The 10 alkyl groups may be the same or different from each other. )