JP2000159624A - Cosmetic material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic material excellent in safety, having no sticky feeling, good spreading owing to its thixotropic nature and good feeling in use. SOLUTION: This cosmetic material is extracted from seaweeds containing 1-10% of sulfate radical with neutral hot water, has <=600 g/cm2 jelly strength in 1.5% agar concentration and contains agar having 400,000-2,000,000 average molecular weight and specified in having >=15 cp viscosity at 85 deg.C in a sol of 1.5% agar concentration.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to cosmetics such as skin cosmetics and cleansing agents, and more particularly to cosmetics containing agar.

[0002]

2. Description of the Related Art Generally, the rheological properties of a conventional agar solution are such that it has a low viscosity in a solution state, but the viscosity rapidly increases due to an increase in agar concentration and gels. The gel also has a strong elasticity as a property of the gel. However, in the solution state, the interaction with water is weak, the function as a thickener is weak, and the gel preparation has high gel strength, but has a disadvantage that it is brittle.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide an excellent stability, no stickiness and high thixotropy as compared with conventional agar-containing cosmetics, so that it has good spreadability.
Another object of the present invention is to provide a cosmetic that has a good feeling in use.

[0004]

Means for Solving the Problems The cosmetic according to the present invention comprises:
Sol is extracted from raw seaweed having a sulfate content of 1 to 10% with neutral hot water, and has a jelly strength of 600 g / cm ² or less and 1.5% agar concentration in a gel having a 1.5% agar concentration. Agar having an average molecular weight of 400,000 to 2,000,000 characterized by having a viscosity at 85 ° C of 15 cp or more.

[0005] The cosmetic according to the present invention is also extracted from raw seaweed having a sulfate content of 1 to 10% with neutral hot water.
Share rate of 5% agar gel is 0.
The stress when deformed 20% at 005 (1 / s) is 20,000
It is characterized by containing agar having a characteristic of not less than Pa and a time required for reducing the stress by half at that time to be not less than 8 seconds.

[0006] In general, cosmetics containing agar are excellent in gel-forming ability, but when in the form of a solution, have low hydrophilicity, so that cosmetics having viscous solution properties can be prepared. Was difficult. This time, the product of the present invention takes a viscous solution form even in a solution state, and when the concentration of the product of the present invention is increased, the rheological properties of the formed gel are examined. It has been found that there is a property of forming a gel having a certainty. The present invention has been made based on such knowledge, and by using agar under the above conditions, growth, which was a drawback of conventional agar, has been improved, and a cosmetic composition having no sticky feeling can be obtained. Was.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The cosmetic of the present invention is disclosed in
Agar described in No. 86351 or a sulfate group content of 1 to 1
Gels extracted from 0% raw seaweed with neutral hot water and adjusted to 1 mm thickness with 1.5% agar concentration
(re rate) 0.005 (1 / s) that the stress at the time of 20% deformation is 20,000 Pa or more, and that the time until the 20% deformation stress relaxation time becomes half of the initial stress is 8 seconds or more. The agar to be characterized is contained in a total composition of 0.0001-3.
It is preferable to add 0.0% by weight, especially 0.01 to 1%.
It is preferable to add 0% by weight, more preferably 0.05 to 3% by weight, since a less sticky feeling and a more comfortable use feeling can be obtained.

Further, in addition to the above essential components, components commonly used in cosmetics, quasi-drugs, pharmaceuticals, and the like can be appropriately added to the cosmetic of the present invention as long as the effects are not impaired. Such components include, for example, ceramides and ceramide-like substances (for example, JP-A-8-3192).
No. 63) and various metal oxides such as various titanium oxides (for example, JP-A No.
No. 7-67681), various zinc oxides (JP-A-62-1987)
228006, JP-A-1-175921, etc.), humectants, amino acids, plant extracts, whitening agents, anti-inflammatory agents, singlet oxygen scavengers, antioxidants, polysaccharides, alcohols, sterols , Blood circulation promoter, purified water, ethanol, surfactant, oily component, silicones, fluorine-based oil agent, UV protection agent, powder, oil gelling agent, film forming agent, sebum secretion inhibitor, softener, pH adjustment Agents, preservatives, sequestering agents, hydroxy acids, dyes, fragrances and the like.
Specific examples include those disclosed in JP-A-08-092054 and JP-A-08-109120. The shampoo composition further includes components used in ordinary shampoo compositions, such as commonly used anionic, cationic, and betaine-type surfactants, silicone derivatives, cationic polymers, humectants, and viscosity modifiers. Agents, fragrances, dyes, ultraviolet absorbers, antioxidants, antibacterial agents, preservatives, and the like can be appropriately compounded as long as the effects of the present invention are not impaired. The dentifrice composition of the present invention includes components used in conventional dentifrice compositions, such as anionic, cationic, and betaine type surfactants; calcium hydrogen phosphate, calcium carbonate, calcium pyrophosphate, insoluble sodium metaphosphate, Abrasives such as silicic anhydride; wetting agents such as sorbitol, xylitol, glycerin, propylene glycol, polyethylene glycol; binders such as sodium carboxymethylcellulose, carrageenan, sodium alginate, xanthan gum, hydroxyethylcellulose, sodium polyacrylate; saccharin sodium; Sweeteners such as glycyrrhizin salts, stevioside and aspartame; preservatives such as methyl paraoxybenzoate and sodium benzoate; menthol;
Flavors such as carvone, anethole, and peppermint oil; astringents such as sodium bicarbonate and aluminum lactate; sodium chloride;
Lysozyme chloride, dextranase, chlorhexidine hydrochloride, benzethonium chloride, cetylpyrimidium chloride,
β-glycyrrhetinic acid, tranexamic acid, vitamin E,
Active ingredients such as hinokitiol, sodium monofluorophosphate, sodium fluoride and the like can be appropriately compounded within a range that does not impair the effects of the present invention.

[0009] The cosmetic of the present invention is prepared by
It is preferably in the range of 3 to 10, especially pH 4 to 8. The cosmetic of the present invention can be produced according to a conventional method.
In addition, the cosmetic of the present invention is not limited to general skin cosmetics, but includes quasi-drugs, topical drugs, and the like, and its dosage form may be arbitrarily selected according to the purpose. Cream, ointment, emulsion, lotion, solution, gel, powder, stick, etc. In addition, the cosmetic of the present invention may be in various forms, for example, cream, cosmetic emulsion, lotion, oily cosmetic,
Skin cosmetics such as massage cosmetics, packs, lipsticks, foundations, skin cleansers, hair cosmetics such as hair tonics, hair styling, hair restoration, hair restorer, shampoo, rinse, conditioner, aerosol products, toothpaste,
It can be used as a cosmetic such as a mouthwash.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an agar manufacturing process applied to the present invention. As shown in the figure, the raw seaweed is first treated with an alkali, if necessary. The degree of the alkali treatment is determined by the sulfate content of the raw seaweed, the details of which will be described later. After that, extraction with neutral hot water is performed, followed by filtration, gelation, freeze-drying, and drying steps according to the usual steps to produce dry agar.

The degree of alkali treatment is adjusted by the type and concentration of the alkaline aqueous solution used, the treatment temperature and the treatment time. Specifically, FIG. 2 shows a change in the sulfate content of seaweed (Ogonori C and Amakusa C) when the treatment temperature was fixed at 50 ° C. and the treatment time was a factor, and the degree of alkali treatment was changed. is there. FIG. 3 shows that the processing time is 6
It is the same data when the degree of alkali treatment is changed with the treatment temperature as a factor, which is fixed at 0 minutes. When the sulfate content of the raw material is 4 or less, a product having a jelly strength of 200 g / cm ² or more and a sol viscosity of 15 cp or more can be obtained without alkali treatment of seaweed.

Actually, Amakusa A (from South Africa), Amakusa B (from Chile), Ogonori A (from Argentina), and Ogonori B (from Chile) as raw seaweed are not subjected to alkali treatment according to the flow of FIG. Table 1 shows the physical properties of the agar obtained when the agar was subjected to the alkali treatment (40 ° C., 1 hour and 80 ° C., 1 hour).

[0013]

[Table 1]

From Table 1, Amakusa A is untreated, Amakusa B is untreated and treated at 40 ° C., and Ogonori A is untreated and treated at 40 ° C.
In the treatment, the target properties of each of Ogonori B are obtained at 40 ° C. In the case of the examples, the physical properties change under each condition, and in order to obtain the target physical properties, the degree of alkali treatment is changed depending on the content of the sulfate group of the seaweed, and the molecule is further cut by extracting near neutrality. This can be achieved by increasing the molecular weight without any increase. As a result, 1.
The jelly strength is 600 g / cm ² or less at 5% agar concentration, and the physical properties of the sol having a viscosity of 15 cp or more at 85 ° C. are obtained.

Table 2 shows that, as in Table 1, Amakusa C (from the Mediterranean) and Ogonori C (from Brazil) were untreated.
After the alkali treatment at 40 ° C. for 1 hour, the extract was extracted with neutral hot water, the extract was extracted with alkali treatment under the condition of a conventional commercially available agar, and the same jelly strength was obtained. This is a comparison of the molecular weight and the sol viscosity of agar with a reduced extraction pH.

[0016]

[Table 2]

As is clear from Table 2, the agar according to the present invention has a large molecular weight and a high sol viscosity despite the same jelly strength as that of the conventional agar. Further, as shown in Table 1, it was confirmed that the agar according to the present invention was lower in the amount of syneresis as compared with those having a jelly strength of 600 g / cm ² or more, and was excellent in water retention. Further, agar (a) obtained by treating Amakusa C at 40 ° C. for 1 hour and neutral extraction, and treating at 80 ° C. for 1 hour, pH 6
The agar (b) obtained by the extraction described above was adjusted to a gel having a thickness of 1 mm at a concentration of 1.5% agar and RSA manufactured by Rheometrics Co., Ltd.
2 and a parallel plate having a diameter of 4.75 mmφ, in the compression mode, (1) share rate (Sharer).
ate) Stress at 20% deformation when stress-strain measurement is performed at 0.005 (1 / s), and (2) Time until stress is reduced from 20% deformation state and initial stress is reduced to half. And were measured. Table 3 shows the results.

[0018]

[Table 3] Time until the stress is reduced by half Stress at the time of 20% deformation (a) 10.3 sec 24,600 Pa (b) 5.25 sec 16,500 Pa

Similarly, Table 4 shows the results of similar tests performed on a conventional commercially available agar (trade name (Ina agar) manufactured by Ina Food Industry Co., Ltd.).

[0020]

Table 4 Time until the stress is reduced by half Stress at the time of 20% deformation Ina agar M-7 4.25 sec 17,800 Pa Ina agar S-9 5.25 sec 18,700 Pa Ina agar UM-11 1.25 sec 9,880 Pa Ina agar UP-37 5.25 sec 17,700 Pa Ina agar KT 6.75 sec 19,400 Pa

Table 5 below shows changes in stress (unit: gmf) with respect to the stress relaxation time (horizontal is sec) in the stress relaxation measurement when a 20% deformation stress is applied.

[0022]

[Table 5]

As is clear from Tables 3 and 4, the agar according to the present invention [Table 3 (a)] has a stress at 20% deformation of 2%.
It can be seen that the rheological properties of the two agars are significantly different from those of the conventional agar [Table 3 (b), Table 4], which is less than 20,000 Pa. As is clear from Table 5, in the agar according to the present invention, the stress after 20 seconds was 1/3 or more of the initial stress in the stress relaxation measurement when a 20% deformation stress was applied. Was less than / 3. Therefore, this agar has a new property in which the gel is sticky and imparts a rubber-like property to the fragility of the conventional agar, and its extensibility and handleability are improved, and it has many potential applications. are doing.

FIG. 4 summarizes the relationship between the jelly strength and the molecular weight obtained for various agars extracted from more seaweeds. From FIG. 4, the specificity of the agar according to the present invention, which has low jelly strength and excellent viscosity and water retention, can be understood.

[0025]

Next, the present invention will be described in more detail with reference to examples using the agar thus produced (hereinafter referred to as the present agar).

Example 1 (Sunscreen cosmetic) A sunscreen cosmetic having the following composition was produced by a conventional method. Initial viscosity, aging viscosity, appearance, lack of stickiness, evaluation of good spreadability and overall feeling of use, initial viscosity 0,
The viscosities over time were 0, the appearance over time did not change, and no stickiness, good spreadability and overall feeling of use were all ◎.

(Composition) (% by weight) 1) Main agar 0.15 2) 2-Ethylhexyl paramethoxycinnamate 3.0 3) Methylpolysiloxane (50cs) 5.0 4) Methylcyclopolysiloxane (DC246: Toray Industries, Inc.) 25.0 5) Zinc paraphenolsulfonate 0.2 6) Silicone-coated zinc oxide 3.0 7) Arginine succinate 1.0 8) Water balance

Example 2 (Lotion) A lotion having the following composition was produced by a conventional method. Initial viscosity, aging viscosity, appearance, lack of stickiness, good spreadability and overall feeling of use were evaluated in the same manner as in Example 1. Initial viscosity ○, aging viscosity 、, appearance in aging did not change, Non-stickiness, good spreadability and overall feeling of use are all ◎
Met.

(Composition) (% by weight) 1) Ethanol 5.0 2) Glycerin 3.0 3) Polyethylene glycol 1500 4.0 4) Polyoxyethylene oleyl ether (20EO) 0.3 5) Polyoxyethylene cured castor Oil (30EO) 0.2 6) Main agar 0.15 7) Arginine succinate 0.5 8) Ceramide 0.5 9) Zinc paraphenol sulfonate 0.2 10) Water balance

Example 3 (Serum) A serum having the following composition was produced by a conventional method. The initial viscosity, the viscosity over time, the emulsion stability, the lack of stickiness, the good spreadability, and the feeling upon use were all good.

(Composition) (% by weight) 1) Poly (N-propionylethyleneimine) -modified silicone 2.0 2) Ceramide 1.0 3) Arginine succinate 1.0 4) 2-Ethylhexyl paramethoxycinnamate 0 .3 5) Horsetail extract (Phyteren EG-199 <BG>: manufactured by Ichimaru Falcos) 0.5 6) Main agar 0.3 7) Acrylic acid polymer (Pemran TR-2: BF manufactured by Goodrich) 0. 05 8) Acrylic acid-based polymer (Carbopol 981: BF Goodrich) 0.05 9) Xanthan gum 0.1 10) Sodium hyaluronate 0.1 11) Arbutin 2.0 12) Sodium citrate 1.0 13 14) Ethanol 5.0 15) 1,3-butylene glycol 2.0 16) L-arginine 0.4 17) Fragrance 0.1 8) water balance

Example 4 (Gel-like cosmetic) A gel-like cosmetic having the following composition was produced by a conventional method. The initial viscosity, the viscosity over time, the emulsion stability, the lack of stickiness, the good spreadability, and the feeling upon use were all good.

(Composition) (% by weight) 1) Main agar 0.5 2) Glycerin 5.0 3) 1,3-butylene glycol 2.0 4) Ethanol 5.0 5) Citric acid 3.0 6) L Arginine 2.0 7) Ethyl paraben 0.1 8) Methyl polysiloxane (6cs) 2.0 9) Polyoxyethylene hydrogenated castor oil (40EO) 1.0 10) Tris (stearyl) phosphate 1.0 11) N -Sodium acylglutamate (Amisoft MS-11: Ajinomoto) 0.5 12) Hyaluronic acid 0.1 13) Lactic acid 0.05 14) Sodium lactate (50%) 1.0 15) Nylon powder (Toray) 1.0 16) Water balance

Example 5 (Sun care cream) A sun care cream having the following composition was produced by a conventional method. The initial viscosity, aging viscosity, emulsion stability, lack of stickiness, good spreadability and feeling of use were all い ず れ.

(Composition) (% by weight) 1) Dimethylsiloxane methyl (polyoxyethylene) siloxane polymer 2.0 2) Polyoxyethylene (20EO) sorbitan monooleate 0.5 3) Methylpolysiloxane (5cs) 7.0) 4) Methylphenylpolysiloxane (20cs) 2.0 5) Jojoba oil 2.0 6) Dextrin palmitate 0.5 7) Octyldimethyl paraaminobenzoic acid 4.0 8) Silica, alumina coated fine particle oxidation Titanium 3.0 9) Cerium oxide 1.0 10) Zirconium oxide 1.0 11) Magnesium sulfate 0.5 12) Glycerin 5.0 13) Dibutylhydroxytoluene 0.05 14) Main agar 0.3 15) Water balance

Example 6 (Foundation) A foundation having the following composition was produced by a conventional method. The initial viscosity, the viscosity over time, the emulsion stability, the lack of stickiness, the good spreadability, and the feeling upon use were all good.

(Composition) (% by weight) 1) Main agar 0.5 2) α-monoisostearyl glyceryl ether 2.0 3) Aluminum diisostearate 0.2 4) Liquid paraffin 10.0 5) Dioctanoic acid Neopentyl glycol 5.0 6) methylphenylpolysiloxane (14cs) 10.0 7) 2-ethylhexyl p-methoxycinnamate 3.0 8) 2-hydroxy-4-methoxybenzophenone 1.0 9) perfluoroalkyl phosphorus Acid ester coated fine titanium oxide 5.0 10) Silicone coated fine zinc oxide 1.0 11) Mica titanium 0.5 12) Colored mica titanium 1.5 13) Bengala 0.2 14) Yellow iron oxide 0.7 15) Black iron oxide 0.05 16) Magnesium sulfate 1.0 17) Methyl paraben 0.2 18) Fragrance trace amount 1 9) Water balance

Example 7 (Massage Cosmetic) A massage cosmetic having the following composition was produced by a conventional method. The initial viscosity, the viscosity over time, the emulsion stability, the lack of stickiness, the good spreadability, and the feeling upon use were all good.

(Composition) (% by weight) 1) Main agar 1.0 2) Sodium chloride 5.0 3) Zeolite 1.0 4) Glycerin 93.0

Example 8 (Hand cream) A hand cream having the following composition was produced by a conventional method. The initial viscosity, the viscosity over time, the emulsion stability, the lack of stickiness, the good spreadability, and the feeling upon use were all good. (Composition) (% by weight) 1) Squalane 15.0 2) Methylpolysiloxane (2cs) 5.0 3) Vaseline 15.0 4) Preservative / perfume appropriate amount 5) Purified water balance 6) Glycerin 2.0 7) Sodium benzoate 0.3 8) Main agar 0.5

Example 9 (Packing agent) A packing agent having the following composition was produced by a conventional method. The initial viscosity, the viscosity over time, the emulsion stability, the lack of stickiness, the good spreadability, and the feeling upon use were all good. (Composition) (% by weight) 1) Poly (N-propionylethyleneimine) -modified silicone 2.0 2) Dipropylene glycol 3.0 3) Ceramide 1.0 4) Polyethylene glycol 3.0 5) 1,3-butylene Glycol 1.0 6) Acrylic acid polymer (Sepigel 305: manufactured by Sepic) 0.2 7) Main agar 2.8 8) Polyvinyl alcohol 12.09 9) Lactic acid 0.5 10) Aloe extract (Aloe extract) : Maruzen Pharmaceutical) 0.1 11) hyaluronic acids 0.1 12) sodium citrate 1.0 13) glycerin 0.5 14) tea extract 0.5 15) L-arginine 0.2 16) ethanol 0 .1 17) Fragrance 0.1 18) Water balance

Example 10 (Washing agent) A hair / body washing agent having the following composition was produced by a conventional method. Initial viscosity, aging viscosity, and washability were all good.

(Composition) (% by weight) 1) polyoxyethylene (12) laurate 15.0 2) sorbitol 10.0 3) main agar 3.0 4) smectite 2.0 5) parabens 0.2 6) Appropriate amount of fragrance 7) Purified water balance

Example 11 (Washing agent) A hair / body washing agent having the following composition was produced by a conventional method. Initial viscosity, aging viscosity, and washability were all good.

(Composition) (% by weight) 1) polyoxyethylene lauryl (3.3) sodium ether sulfate 10.0 2) polyoxyethylene (12) laurate 6.0 3) stearyl alcohol 4.0 4) polyoxyethylene ( PEG6000) 3.0 5) Main agar 3.0 6) Alkyl glucoside 2.0 (Sugar ether surfactant AG-104, manufactured by Kao Corporation) 7) Crystalline cellulose (φ30 μm) 8.0 8) Ethanol 3.2 9) Suitable amount of fragrance 10) Purified water balance

Example 12 (Washing agent) A hair / body washing agent having the following composition was produced by a conventional method. Initial viscosity, aging viscosity, and washability were all good.

(Composition) (% by weight) 1) Polyoxyethylene (12) laurate 2.0 2) Isoprene glycol 5.0 3) Polyoxyethylene (PEG6000) 25.0 4) 1, 3-butylene glycol 0 5) Glycerin 25.0 6) Crystalline cellulose (φ30 μm) 10.0 7) Main agar 5.0 8) Polyethylene beads (φ50 μm) 3.2 9) Perfume appropriate amount 10) Purified water balance

Example 13 (Washing agent) A hair / body washing agent having the following composition was produced by a conventional method. Initial viscosity, aging viscosity, and washability were all good.

(Composition) (% by weight) 1) polyoxyethylene lauryl (3.3) sodium ether sulfate 2.0 2) cocoylamide propyl betaine 5.0 3) glycerin 25.0 4) lauric acid ethanolamide 5.0 5 6) Xanthan gum 25.0 6) Main agar 5.0 7) Parabens 0.2 8) Perfume qs 9) Purified water balance

[0050]

As described above, according to the present invention, as a skin cosmetic, compared with a conventional agar-containing cosmetic,
Excellent stability, no stickiness, high thixotropy, good spreadability, good feel,
The effect is obtained. In addition, as a cleaning agent, it is possible to obtain an effect that foaming is good, finger passing during hair washing and at the start of rinsing is smooth, and a refreshing feeling can be obtained after washing.

[Brief description of the drawings]

FIG. 1 is a diagram showing processing steps of an embodiment.

FIG. 2 is data showing the relationship between alkali treatment time and sulfate content.

FIG. 3 is data showing the relationship between alkali treatment temperature and sulfate content.

FIG. 4 shows the relationship between jelly strength and molecular weight of various agars.

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Yuji Utsuhashi 5074 Nishiharuka, Ina-shi, Nagano Ina Food Industry Co., Ltd.F-term (reference) 4C083 AA112 AA122 AB052 AB172 AB212 AB232 AB242 AB362 AB432 AB442 AB472 AC012 AC072 AC102 AC112 AC122 AC132 AC172 AC182 AC212 AC302 AC312 AC332 AC392 AC402 AC432 AC472 AC552 AC582 AC642 AC662 AC712 AC782 AC792 AC902 AD042 AD072 AD092 AD112 AD152 AD162 AD172 AD211 AD212 AD242 AD262 AD332 AD352 AD392 CC04 CC05 CC07 CC12 CC19 CC23 CC38 DD23 DD31 EE01 EE01 EE01 EE01 EE01

Claims (2)

[Claims] 1. A gel extracted from a raw seaweed having a sulfate content of 1 to 10% with neutral hot water and having a 1.5% agar concentration has a jelly strength of 600 g / cm ² or less;
The viscosity in a 5% agar concentration sol is 15 at 85 ° C.
A cosmetic containing agar having an average molecular weight of 400,000 to 2,000,000, which is characterized by being at least cp. 2. A gel extracted from raw seaweed having a sulfate content of 1 to 10% with neutral hot water and having a 1.5% agar concentration at a share rate of 0.005 (1 / s). 20%
A cosmetic containing agar, which has a characteristic that the stress when deformed is 20,000 Pa or more and the time until the stress at that time is reduced to half is 8 seconds or more.