JP2017193507A - Oil gel composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil gel composition having good spreading at the time of application, a feeling of use without feeling of stickiness, excellent gel stability against light exposure, and excellent shape retention at high temperature as well as excellent long-term storage stability.SOLUTION: According to the present invention, an oil gel composition comprises the components (a) to (e), which are described below, in which the content of component (a) is 0.1 to 5% by mass, the content of component (b) is 0.2 to 7% by mass, the content of component (c) is 45 to 95% by mass, and the content of component (d) is 1 to 20% by mass, and the mass ratio [a/b] of component (a) and component (b) is 1/4 to 3/1. Here, component (a) is diacyl type glycerophospholipid; component (b) is fatty acid salt; component (c) is an oil agent that is in liquid at 25°C, component (d) is trihydric to hexahydric alcohol having 3 to 6 carbon atoms, and component (e) is water.SELECTED DRAWING: None

Description

  The present invention relates to an oil gel composition that has a good elongation at the time of coating, a feeling of use without stickiness, is excellent in gel stability against light exposure, and is excellent in shape retention at high temperatures and long-term storage stability.

Gelling technology for designing cosmetics, pharmaceuticals, quasi-drugs, household goods, etc. not only improves the stability of the formulation, but also creates a high-class feel for the formulation and enhances usability and taste. Is also an important technology to influence. In recent years, various gelation techniques have been developed not only for aqueous preparations but also for oil-based preparations.
Examples of gelling techniques for oily formulations include oil gels that form flake crystals and fibrous aggregates in oils, such as 12-hydroxystearic acid, dextrin palmitate, N-lauroyl-L-glutamic acid dibutylamide, and the like. The use of agents is known. However, the oil gel prepared using these oil gelling agents has a problem in that it has a poor elongation when applied and a sticky feeling is felt.

  In response to these problems in use feeling, for example, Patent Document 1 proposes an oil gel composed of reverse lecithin micelles. Specifically, in Patent Document 1, components that are safe for the human body such as lecithin and saccharide are used as an oil gelling agent, and an oil gel with an excellent feeling of use can be obtained. However, since the content of lecithin is usually as high as about 10% by mass, the odor derived from lecithin is strong, and the gel collapses at high temperatures, causing a problem in shape retention.

  Patent Document 2 proposes an oil-containing gel-like composition comprising one or more viscous substances selected from lecithins, glutamic acid polypeptides and fructans, water, water-soluble polyhydroxy compounds, and fats and oils. The oil gel described in Patent Document 2 is an emulsion type oil gel using lysolecithin as lecithins, and can reduce the content of lysolecithin to about 1 to 2% by mass. However, the oil gel prepared using lysolecithin has a problem of low long-term storage stability.

  As a composition with improved storage stability, for example, in Patent Document 3, a multi-chain polyhydrophilic group compound (gemini surfactant) having two or more long-chain hydrophobic groups and two hydrophilic groups in the molecule and oily properties are disclosed. An oily hair cosmetic containing an ingredient has been proposed. Although the oil gel described in Patent Document 3 has good and improved long-term storage stability, there has been a new problem that the stability of the gel is impaired when stored for a long period of time when exposed to light. That is, the oil gel described in Patent Document 3 has insufficient gel stability against light exposure, and a composition having gel storage stability against light exposure has been demanded.

International Publication No. 2010/122694 Japanese Patent Laid-Open No. 11-18697 JP 2006-225370 A

  Therefore, the problem to be solved by the present invention is that the elongation at the time of application is good, a feeling of use without stickiness is obtained, the stability of the gel to light exposure is excellent, and the shape retention at high temperature and long-term storage stability It is providing the oil gel composition excellent in property.

  As a result of intensive studies by the present inventors in order to solve the above-mentioned problems, diacyl glycerophospholipid, fatty acid salt, oil agent that is liquid at 25 ° C., C3-C6 trihydric alcohol, and water are combined in a specific ratio. As a result, the present inventors have found that the oil gel composition used in the present invention can solve the above-mentioned problems without losing the above-mentioned problems, and have completed the present invention. That is, the present invention is as follows.

[1] The following components (a) to (e) are contained, the content of the component (a) in the total amount of the composition is 0.1 to 5% by mass, and the content of the component (b) is 0.2. To 7 mass%, the content of component (c) is 45 to 95 mass%, the content of component (d) is 1 to 20 mass%, and the mass ratio of component (a) to component (b) [a / b] is an oil gel composition of 1/4 to 3/1.
Component (a) Diacyl-type glycerophospholipid Component (b) Fatty acid salt Component (c) Oil agent liquid at 25 ° C. Component (d) C3-C6 trivalent alcohol Component (e) Water

  The oil gel composition of the present invention has good elongation at the time of application, gives a feeling of use without stickiness, is excellent in gel stability against light exposure, and is excellent in shape retention at high temperatures and long-term storage stability. There is an effect.

Embodiments of the present invention will be described below.
The oil gel composition of the present invention contains the following components (a) to (e).

[Component (a)]
The component (a) used in the present invention is a diacyl glycerophospholipid, such as soybean-derived soybean phospholipid, soybean-derived hydrogenated soybean phospholipid, egg yolk-derived egg yolk phospholipid, egg yolk-derived hydrogenated egg yolk phosphorus Examples thereof include lipids. From the viewpoint of durability against heat and light and long-term storage stability, a hydrogenated type is more preferable. These diacyl glycerophospholipids are generally a mixture of phosphatidylcholine (hereinafter abbreviated as PC), phosphatidylethanolamine, phosphatyl diinositol, and the like. Although their composition varies depending on the origin and purification conditions, the phospholipid used in the present invention preferably has a higher PC purity, specifically, preferably 30% by mass or more, particularly preferably 40% by mass or more, and 60% by mass. The above is more preferable.
As the component (a), one or more of the diacyl glycerophospholipids can be used.
When lysolecithin, which is a monoacyl glycerophospholipid, is used in combination with a diacyl glycerophospholipid, the oil gel's long-term storage stability and stability to light exposure may decrease.

  The content of the component (a) in the total composition is 0.1 to 5% by mass, preferably 0.2 to 4% by mass, particularly preferably 0.3 to 3% by mass. is there. When there is too little content of a component (a), the stability with respect to the light exposure of an oil gel and long-term storage stability may fall. Moreover, when there is too much content of a component (a), the smell derived from a lecithin becomes strong and the shape retention property of the gel at high temperature may fall.

[Component (b)]
Component (b) used in the present invention is a fatty acid salt. Examples of the fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, palmitooleic acid, oleic acid, linoleic acid, and isostearic acid. From the viewpoint of long-term storage stability of the oil gel, unsaturated or branched saturated fatty acids having 16 to 20 carbon atoms are preferable, and for example, palmitooleic acid, oleic acid, isostearic acid and the like are preferable.
Examples of the counter ion include alkali metals such as sodium and potassium; organic amines such as triethanolamine; and basic amino acids such as arginine, lysine, hydroxylysine and ornithine. Basic amino acids are preferable from the viewpoint of the stability of the oil gel to light exposure and long-term storage stability, and arginine is particularly preferable from the viewpoint of availability.
Specific examples of the fatty acid salt include arginine isostearate, arginine oleate, and arginine palmitate, and arginine isostearate is particularly preferable.
As the component (b), one or more of the fatty acid salts can be used.

  The content of component (b) in the total composition is 0.2 to 7% by mass, preferably 0.3 to 6% by mass, particularly preferably 0.5 to 5% by mass. is there. When the content of the component (b) is too small, the interfacial tension lowering ability is insufficient, so that an oil gel is difficult to form, resulting in a viscous solution, and long-term storage stability may be insufficient. Moreover, when there is too much content of a component (b), the elongation at the time of application | coating of an oil gel may worsen, and a sticky feeling may be felt.

[Component (c)]
Component (c) used in the present invention is a liquid oil at 25 ° C. One feature of the oil gel composition of the present invention is that it can be gelled without depending on the type of oil such as vegetable oil, hydrocarbon oil, synthetic ester oil, and silicone oil.
Examples of vegetable oils include avocado oil, linseed oil, almond oil, olive oil, kyounin oil, wheat germ oil, sesame oil, rice germ oil, rice bran oil, safflower oil, soybean oil, corn oil, jojoba oil, macadamia nut oil, cottonseed oil And palm oil.
Examples of the hydrocarbon oil include squalane, liquid paraffin, light liquid isoparaffin, and olefin oligomer.
Synthetic ester oils include, for example, lanolin acetate, lanolin fatty acid isopropyl, isocetyl isostearate, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate, tri-2-ethylhexanoic acid Trimethylolpropane, tetra-2-ethylhexanoate pentaerythritol, 2-ethylhexyl palmitate, oleyl oleate, octyldodecyl oleate, neopentyl glycol dicaprate, 2-ethylhexyl succinate, isocetyl isostearate, butyl isostearate, sebacine Examples include di-2-ethylhexyl acid, myristyl lactate, glyceride tri-2-ethylhexanoate, and glyceride di-2-heptylundecanoate.
Examples of the silicone oil include decamethylcyclopentasiloxane, methylpolysiloxane, ethylpolysiloxane, and ethylmethylpolysiloxane.
As the component (c), one or more of the oils that are liquid at 25 ° C. can be used.

  The content of the component (c) in the total composition is 45 to 95% by mass, preferably 50 to 93% by mass, and particularly preferably 55 to 90% by mass. When there is too little content of a component (c), an oil gel cannot form easily and it becomes a viscous solution, and long-term storage stability may become inadequate. Moreover, when there is too much content of a component (c), it becomes difficult to make a gel contain oil, and phase separation may be carried out.

[Component (d)]
The component (d) used in the present invention is a trivalent to hexavalent alcohol having 3 to 6 carbon atoms, and a structure in which 3 to 6 hydrogen atoms in the aliphatic hydrocarbon having 3 to 6 carbon atoms are substituted with hydroxyl groups. Is a compound having Specific examples include glycerin, erythritol, xylitol, sorbitol, pentaerythritol, and the like, preferably glycerin and sorbitol, and particularly preferably glycerin. When monovalent or divalent alcohol is used, it may be difficult to prepare an oil gel.
As a component (d), 1 type (s) or 2 or more types can be used among the said C3-C6 trivalent alcohol.

  The content of the component (d) in the total composition is 1 to 20% by mass, preferably 2 to 18% by mass, particularly preferably 3 to 15% by mass. When there is too little content of a component (d), an oil gel cannot form easily and may phase-separate. Moreover, when there is too much content of a component (d), an oil gel cannot form easily and it becomes a viscous solution, and long-term storage stability may become inadequate.

[Component (e)]
The component (e) used in the present invention is water, and water that is generally used in cosmetics and pharmaceuticals can be used. For example, ion exchange water or purified water can be used.

  The content of the component (e) in the total amount of the composition is a mass fraction, preferably 0.1 to 15% by mass, particularly preferably 0.5 to 13% by mass, and more preferably 1 to 11% by mass. It is. When there is too little content of a component (e), an oil gel cannot form easily and it becomes a viscous solution, and long-term storage stability may become inadequate. Moreover, when there is too much content of a component (e), gel becomes hard and the elongation at the time of application | coating may worsen.

[Ratio of each component]
In the present invention, the mass ratio [a / b] of the component (a) to the component (b) is 1/4 to 3/1, preferably 1/3 to 2/1, particularly preferably 1/2 to 1. / 1. If the mass ratio [a / b] is too small, the stability to light exposure and long-term storage stability may decrease, and if the mass ratio [a / b] is too large, an oil gel is difficult to form and phase separation occurs. There is.

The mass fraction [d / (d + e) × 100] of the component (d) in the total content of the component (d) and the component (e) is preferably 55 to 95% by mass, particularly preferably 60 to It is 90 mass%, More preferably, it is 65-85 mass%. When the mass fraction of the component (d) is too small, the gel tends to be slightly hard, and when the mass fraction of the component (d) is too large, the oil gel tends to have a slightly sticky feeling.
As long as the oil gel composition of the present invention forms an oil gel, the mass fraction of the component (d) in the total content of the component (d) and the component (e) is outside the above range. Is included.
In the oil gel composition of the present invention, the total content of the components (a) to (e) is 100% by mass, and when the following other optional components are further included, the content of the other optional components Can be set by the content relative to 100 parts by mass of the total content of components (a) to (e).

[Preparation method]
The oil gel composition of the present invention can be prepared, for example, by the following procedure.
1) Other components (a) except component (c), component (b), component (d) and component (e) are uniformly mixed to obtain a mixed solution. Although the temperature at the time of mixing is not specifically limited, In order to make it melt | dissolve quickly, it is preferable to raise temperature and to mix. Specifically, mixing is performed at 80 ± 20 ° C., preferably 80 ± 10 ° C.
2) After cooling the mixed solution prepared in the above 1) to 40 ° C. ± 20 ° C., gradually add the component (c) to the mixed solution. The input rate of component (c) is preferably 1 to 500 parts by mass, particularly preferably 10 to 400 parts by mass, and more preferably 50 to 300 parts by mass with respect to 100 parts by mass of the mixed solution. / Hours.

  The oil gel composition of the present invention is used by applying an appropriate amount to the skin or hair. In addition, the oil gel composition of the present invention can be blended with other optional components as long as the effects of the invention are not impaired. Other optional components include, for example, solid fats, waxes, alcohols, polyhydric alcohols other than component (d), saccharides, polysaccharides, amino acids, various surfactants, organic salts, inorganic salts, pH adjusters, chelating agents. Antioxidants, bactericides, blood flow promoters, anti-inflammatory agents, ultraviolet absorbers, ultraviolet scattering agents, vitamins, pigments, fragrances and the like can be appropriately blended.

  Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples.

[Examples 1 to 9 and Comparative Examples 1 to 10]
An oil gel composition was prepared by the following method and evaluated as follows. Tables 1 and 2 show the formulations and results.
All oil gel compositions were prepared on a 100 g scale.

<Preparation method of oil gel composition>
Into a 200 mL beaker, the component (a), the component (b), the component (d) and the component (e) were charged, and a lecithin solution was prepared while mixing with a propeller at 80 ± 5 ° C. After cooling a lecithin solution to 40 degreeC, it stirred at a propeller and it was dripped at 100 mass parts / hour with respect to 100 mass parts of component (c), and the oil gel composition was prepared.
In addition, when using several types of components (c), it mixed and used oil agents beforehand.

<Availability of gel formation>
The gel immediately after preparation was observed and judged according to the following criteria. ◎ and ○ were accepted.
A: An oil gel composition having no fluidity could be prepared.
○: A fluid viscous solution was prepared.
X: The gel could not be prepared, and phase separation was confirmed immediately after the preparation.

<Evaluation of feeling of use>
A usability test was conducted by 20 professional panelists. When the prepared oil gel composition 0.2 g was picked up and applied to the inner part of the forearm, 1) the elongation at the time of application, and 2) the stickiness, each panelist evaluated the following absolute evaluation in four stages. And 5-step evaluation of AA-D was performed from the sum total of a score, and AA, A, and B were set as the pass.
(4-level evaluation based on the total score)
AA: Total score is 50-60 points A: Total score is 40-49 points B: Total score is 30-39 points C: Total score is 20-29 points D: Total score is less than 20 points

1) Elongation during application (absolute evaluation criteria)
(Score): (Evaluation)
3: The elongation during application is very good.
2: Elongation during application is good.
1: The elongation at the time of application is slightly bad.
0: Elongation during application is remarkably bad.

2) Stickiness (absolute evaluation criteria)
(Score): (Evaluation)
3: No stickiness is felt during massage.
2: Not very sticky when massaged.
1: Some stickiness is felt during massage.
0: Remarkably stickiness is felt during massage.

<Stability against light exposure>
30 g of the prepared oil gel composition was filled into a 50 mL screw tube and left for 2 weeks in an environmental test apparatus BEC-II-350 type (manufactured by Shimadzu Corporation) set at a illuminance of 30,000 Lux. The durability against light was evaluated, and ◎ and ○ were accepted.
A: The appearance does not change.
○: A slight change in appearance is observed.
X: A clear change in appearance is observed.

<Shape retention at high temperature>
The state after 30 g of the prepared oil gel composition was filled in a 50 mL screw tube and stored in a constant temperature bath at 60 ° C. for 24 hours was observed. The shape retention was evaluated according to the following criteria, and ◎ and ○ were accepted.
A: The appearance is the same as that immediately after preparation.
○: Slight decrease in viscosity or change in appearance is confirmed.
X: Significant decrease in viscosity or change in appearance is confirmed.

<Long-term storage stability>
30 g of the prepared oil gel composition was filled into a 50 mL screw tube, stored in a constant temperature bath at 40 ° C. for 6 months, and the state was observed. Storage stability was evaluated according to the following criteria, and ◎ and ○ were accepted.
A: The appearance is the same as that immediately after preparation.
○: A slight change in appearance is observed.
X: A clear change in appearance is observed.

The annotations of the symbols described in Table 1 and Table 2 above are described below.
* 1 Product name: COATSOME NC-21, manufactured by NOF Corporation * 2 Product name: COATSOME NC-61, manufactured by NOF Corporation * 3 Product name: Basis LP-20, manufactured by Nisshin Oillio Group * 4 Display name: arginine, product name: L-arginine C grade, manufactured by Ajinomoto Co., Inc. Display name: isostearic acid, product name: SR PRISORINE 3505, manufactured by Croda Japan Co., Ltd. * 5 Display name: oleic acid, product name : EXTRA OS-85, manufactured by Nippon Oil Co., Ltd. * 6 Display name: palmitic acid, product name: NAA-160, manufactured by NOF Corporation * 7 Display name: hydrogenated polyisobutene, product name: PARLEAM EX, * 8 Product name: Refined Macadamia oil, NOF Corporation * 9 Product name: Unistar MB-816, NOF Corporation * 10 Japanese name: Decamethylcyclopentasiloxane, product name : KF-995, manufactured by Shin-Etsu Chemical Co., Ltd. * 11 Standard component name: Concentrated glycerin, Product name: RG Co-P, manufactured by NOF Corporation * 12 Reagent, manufactured by Kanto Chemical Co., Ltd. * 13 Display name: hydrogenated lysolecithin, product name: LP70H, manufactured by Nippon Seika Co., Ltd. * 14 Standard ingredient name: Polyoxyethylene Sodium lauryl ether sulfate, trade name: Persoft EF, manufactured by NOF Corporation * 15 INCI: Fructan, manufactured by Bioland * 16 Product name: 1.3 butanediol (for cosmetics), manufactured by Daicel Corporation

  About Examples 1-9, in any sample, the elongation at the time of application is good, a feeling of use without stickiness is obtained, the stability of the gel to light exposure is excellent, and the shape retention at high temperature and long-term The oil gel composition was excellent in storage stability.

On the other hand, about Comparative Examples 1-10, sufficient effect was not acquired.
That is, in Comparative Example 1, since the mass ratio [a / b] of the component (a) to the component (b) is less than ¼, the durability against light and heat is insufficient.
In Comparative Example 2, oil gelation was not formed because the mass ratio [a / b] exceeded 3/1.
In Comparative Example 3, since the content of the component (a) is less than 0.1% by mass and the mass ratio [a / b] is also less than 1/4, in long-term storage stability, durability against heat and light. It was insufficient.
In Comparative Example 4, the content of component (a) exceeds 5% by mass, forming reverse string micelles. However, in the durability test against heat and light, the odor deteriorated and was rejected. Moreover, the elongation at the time of application was insufficient.
In Comparative Example 5, since the content of the component (c) is less than 45% by mass, a viscous liquid is prepared instead of an oil gel, long-term storage stability, durability against heat and light, elongation during application, and stickiness The feeling was insufficient.

In Comparative Example 6, since the content of component (c) exceeded 95% by mass, phase separation was confirmed immediately after preparation.
In Comparative Example 7, since hydrogenated lysolecithin, which is a monoacyl glycerophospholipid, was used instead of the diacyl glycerophospholipid of component (a), the durability against heat and light was insufficient.
In Comparative Example 8, since sodium laureth sulfate was used in place of the fatty acid arginine salt of component (b), the stability to light and the elongation during application were insufficient.
In Comparative Example 9, since fructan was used in place of the fatty acid arginine salt of component (b), long-term storage stability, durability against heat and light, and stickiness were insufficient.
In Comparative Example 10, since 1,3-butylene glycol, which is a divalent polyhydric alcohol, was used instead of component (d), no oil gel was formed.

  Next, the present invention will be further described with reference to other examples, but the present invention is not limited thereto. In addition, although the preparation method is the same as that of Examples 1-9, in the other component, the water-soluble component was mix | blended with the water phase and the oil-based component was mix | blended with the oil phase.

(Example 10: Body oil jelly) Compounding ratio (mass%)
Component (a) Hydrogenated soybean phospholipid (PC purity 60% or more) 0.8
Component (b) Arginine oleate 1.2
Ingredient (c) Squalane 85.0
Ingredient (d) Glycerin 10.0
Ingredient (e) Water 3.0
Total 100.0 (mass%)
(Other ingredients)
Compounding amount (parts by mass) with respect to 100 parts by mass of the total content of components (a) to (e)
Lauroyl glutamate (octyldodecyl / phytosteryl / behenyl)
1.0
Shea fat 1.0
Tocopherol (d-δ-tocopherol) 0.05
Tocopherol acetate (dl-α-tocopherol acetate) 0.05
Fragrance 0.2
Betaine (trimethylglycine) 0.05
Trehalose 0.05
Hyaluronic acid Na (1% aqueous solution) 0.01
EDTA-2Na 0.01
Polyquaternium-51 (5% aqueous solution) 0.1
Ascorbyl glucoside 0.01
Pentylene glycol 0.05
Allantoin 0.01
Total 2.59 (parts by mass)

Claims (1)

It contains the following components (a) to (e), the content of the component (a) in the total amount of the composition is 0.1 to 5% by mass, and the content of the component (b) is 0.2 to 7% by mass. %, The content of component (c) is 45 to 95% by mass, the content of component (d) is 1 to 20% by mass, and the mass ratio [a / b] of component (a) to component (b) is Oil gel composition that is 1/4 to 3/1.
Component (a) Diacyl-type glycerophospholipid Component (b) Fatty acid salt Component (c) Oil agent liquid at 25 ° C. Component (d) C3-C6 trivalent alcohol Component (e) Water