JP6127699B2 - Cosmetic composition - Google Patents

Description

  The present invention relates to a cosmetic composition having excellent volatility, hair care properties and skin care properties.

Conventional hydrocarbons used as volatile oils include hydrocarbons having 6 to 12 carbon atoms such as n-hexane, isohexane, cyclohexane, n-octane, isooctane, n-nonane, and n-decane. And isododecane are known.
However, these volatile oils have a problem of poor safety because their flash points are as low as 50 ° C. or less. In addition, when these volatile oils are used in cosmetics and cleaning oils, there is a problem of high irritation to the scalp and mucous membranes, and water is easily evaporated from the living body surface due to high volatility. .

  On the other hand, cosmetics and cleaning products for hair are used for the purpose of improving the slipperiness during use and after use, the glossiness at the time of drying, and the texture and firmness of hair that have deteriorated with age. Conventionally, a silicone oil component has been used. For example, Patent Document 1 discloses a hair cosmetic using a cyclic silicone such as cyclomethicone and a high molecular silicone oil as a volatile component for the purpose of improving gloss and texture.

  In addition to skin moisturizing effects, skin cosmetics and cleansing agents such as body lotions for skin care have recently been desired to impart a gloss that makes the skin look beautiful. For example, Patent Document 2 discloses a cosmetic for skin that contains a specific high-polymerization silicone oil and hydrogenated lecithin, and imparts a healthy gloss and soft elasticity to the skin.

However, although the silicone oil used in Patent Document 1 and Patent Document 2 is excellent in volatility, there are concerns about safety to the human body and the environment. There is a problem that the use is not preferable. In addition, since silicone oil has low permeability to hair and skin, only a glossy surface can be obtained.
Thus, in recent years, taking into consideration the harmful effects of silicone oil on the hair and skin, and obtaining sufficient gloss, there has been a demand for an oil agent for cosmetics and cleaning agents that replaces silicone oil.

On the other hand, hydrocarbons having 15 or more carbon atoms such as n-pentadecane and isohexadecane are expected to have improved performance such as increased flash point and decreased irritation to skin and mucous membranes due to their high molecular weight.
However, due to the decrease in volatility, oil tends to remain, and there is a problem that the feeling of use is poor when applied to hair or skin. In particular, it did not have properties required for cosmetics such as improvement of slipperiness, gloss and firmness.

From such a background, as a volatile oil agent having excellent volatility, high flash point and safety for human body, for example, Patent Document 3 includes hydrocarbons having 12 to 14 carbon atoms and carbon atoms having 13 to 16 carbon atoms. A non-silicone composition combining a hydrocarbon and a non-volatile hydrocarbon is disclosed.
However, the non-silicone composition of Patent Document 3 is inferior in feeling of use such as a squeaky feeling when applied to hair, and has a problem that it is difficult to use as an oil agent for cosmetics and cleaning agents. Moreover, since oil which is a non-volatile component is contained in the non-silicone composition, there is also a problem of low volatility. Therefore, since it is necessary to mix several oil in a manufacturing process, there also exists a problem that manufacture is complicated.

JP 2009-286752 A JP 2005-8540 A Special table 2011-503192 gazette

  In view of the above problems, an object of the present invention is to provide a cosmetic composition having excellent volatility, hair care characteristics, and skin care characteristics.

  As a result of intensive studies in view of the above problems, the present inventors have found that cosmetics containing a mixture of paraffins having a specific range of carbon number and boiling point of paraffin and heavy liquid isoparaffin having a predetermined kinematic viscosity in a specific ratio. It has been found that the above object can be achieved by a composition for food.

That is, the present invention includes (a) an isoparaffin having 12 to 16 carbon atoms and a paraffin mixture having a boiling range of 185 to 215 ° C., and (b) a kinematic viscosity at 210 ° F. of 200 to 10,000 mm ² / s. A cosmetic composition comprising heavy liquid isoparaffin, wherein (b) the content of heavy liquid isoparaffin relative to the sum of (a) paraffin mixture and (b) heavy liquid isoparaffin is 1 to 30% by mass. is there.
In addition, the composition for cosmetics in this invention can be applied not only to cosmetics but also to cleaning agents and pharmaceuticals.

  Moreover, this invention provides the oil agent for hair cosmetics containing the composition for cosmetics of this invention, and the oil agent for skin cosmetics containing the composition for cosmetics of this invention.

  The cosmetic composition of the present invention has excellent volatility, safety of operation due to high flash point, safety to human body and environment, and not only gives healthy and natural gloss when applied. Excellent in various hair care properties and skin care properties. Therefore, the cosmetic composition of the present invention is useful as a cosmetic oil and a cleaning oil for hair and skin, and further as a raw material for pharmaceuticals. For example, it is useful as a substitute for cyclic silicones such as cyclopentasiloxane, isododecane and dimethyl silicone.

Embodiments of the present invention will be described below.
The cosmetic composition of the present invention comprises (a) a paraffin mixture having 12 to 16 carbon atoms and a boiling range of 185 to 215 ° C, and (b) a kinematic viscosity at 210 ° F of 200 to 200 ° C. Contains 10000 mm ² / s heavy liquid isoparaffin.

[Cosmetic composition]
The component (a) used in the cosmetic composition of the present invention is a mixture of paraffins (saturated hydrocarbons) containing isoparaffins (branched saturated hydrocarbons) having 12 to 16 carbon atoms, and further has a carbon number. May contain 12-16 straight chain saturated hydrocarbons.
The cosmetic composition of the present invention contains hydrocarbons other than saturated hydrocarbons having 12 to 16 carbon atoms, such as cyclic saturated hydrocarbons and unsaturated hydrocarbons, to the extent that they do not contradict the purpose of the present invention. It may be included.

The paraffin mixture used in the cosmetic composition of the present invention has a boiling point range of 185 to 215 ° C, preferably 186 to 210 ° C. When the boiling point of the paraffin mixture is less than 185 ° C., the flash point becomes low, which is not preferable in terms of safety. When the boiling point exceeds 215 ° C., the volatility decreases and the oil tends to remain, so that the feeling of use when applied to hair or skin may be inferior. The boiling point can be measured by a distillation test according to JIS K2254.
In addition, the flash point of the paraffin mixture in the present invention is preferably 61 to 70 ° C., more preferably 62 to 67 ° C. in a sealing test according to JIS K2265, from the viewpoint of safety and odor. . For example, commercially available isododecane (2,2,4,6,6-pentamethylheptane content of 95% by mass or more) has a boiling point as low as 177 ° C. and a flash point of about 48 ° C. Is necessary and has a strong odor. On the other hand, when the flash point exceeds 70 ° C., the drying property is deteriorated and the feel may be heavy.

  In the paraffin mixture of the present invention, the content of 2, 2, 4, 6, 6-pentamethylheptane (hereinafter also referred to as isododecane) is preferably less than 10% by mass, more preferably less than 8% by mass. Yes, particularly preferably less than 5% by mass. When the content of isododecane in the mixture is 10% by mass or more, the boiling point is lowered, which is not preferable in terms of safety, and the odor becomes strong and the feeling of use on hair and skin is reduced. May be restricted.

The paraffin mixture in this invention can be manufactured through the process containing the following processes 1-4, for example.
Step 1) A step of removing a non-reacted component and a polymer having 20 or more carbon atoms from a polymerization reaction system of isobutylene and normal butene to obtain a polybutene mixture having 16 or less carbon atoms.
Step 2) A step of hydrogenating the polybutene mixture having 16 or less carbon atoms obtained in Step 1 to obtain a paraffin mixture having 16 or less carbon atoms.
Step 3) A step of adsorbing the paraffin mixture having 16 or less carbon atoms obtained in Step 2 with an adsorbent.
Step 4) A step of distilling the paraffin mixture having 16 or less carbon atoms adsorbed in Step 3 under reduced pressure to distill off 15% by mass or more.

The steps 1 to 4 will be described sequentially.
First, the polymerization reaction system of isobutylene and normal butene used in Step 1 uses a known method, for example, a catalyst, using a mixed gas of isobutylene and normal butene which is a C4 fraction in the fraction obtained by cracking of naphtha. It can be obtained by the conventional cationic polymerization method. Therefore, the polymerization reaction system of isobutylene and normal butene includes a polybutene mixture (a copolymer of isobutylene and normal butene, an isobutylene (co) polymer, and a normal butene polymer). A mixture of saturated hydrocarbons), unreacted components (such as isobutylene and normal butene contained in the mixed gas), and a catalyst.

  In normal butene, there are isomers of 1-butene, cis-2-butene and trans-2-butene. The mixed gas composition for obtaining a copolymer of isobutylene and normal butene is 15 to 80% by mass of isobutylene, 10 to 40% by mass of 1-butene and 10 in total of cis-2-butene and trans-2-butene. It is preferably ˜60% by mass, more preferably 15 to 70% by mass of isobutylene, 15 to 40% by mass of 1-butene, and 15 to 60% by mass in total of cis-2-butene and trans-2-butene. Particularly preferably 15 to 60% by weight of isobutylene, 15 to 40% by weight of 1-butene and 15 to 40% by weight in total of cis-2-butene and trans-2-butene, Preferably, isobutylene is 20 to 50% by mass, 1-butene is 18 to 25% by mass, cis-2-butene and trans-2- 10 to 40% by mass in total, more preferably 20 to 33% by mass of isobutylene, 18 to 25% by mass of 1-butene and 18 to 25 in total of cis-2-butene and trans-2-butene % By mass. The mixed gas may contain components that do not contribute to the copolymerization reaction, such as isobutane and butane.

  Examples of the catalyst used in the cationic polymerization method include aluminum chloride, acidic ion exchange resin, sulfuric acid, boron fluoride, and complexes thereof. It is also possible to control the polymerization reaction by adding a base to the catalyst. The polymerization reaction is usually performed at 40 to 120 ° C.

  As described above, the polymerization reaction system of isobutylene and normal butene contains a polybutene mixture which is a polymerization reaction product of isobutylene and normal butene, an unreacted component, and the like. In step 1, unreacted components and a polymer having 20 or more carbon atoms are removed from the polymerization reaction system to obtain a polybutene mixture having 16 or less carbon atoms. As the removal method, distillation is preferred. Examples of the distillation method include a simple distillation method, a continuous distillation method, a steam distillation method, and a thin film distillation method, and these methods can be performed alone or in combination. The apparatus used for distillation is not particularly limited in terms of the material, shape, type, and the like, and examples thereof include a distillation column filled with a packing such as Raschig ring, a plate distillation column having a dish-like shelf, and the like. The number of theoretical plates showing the separation ability of the distillation column is preferably 10 or more. In addition, the conditions for the feed amount to the distillation column, the reflux ratio, and the removal amount can be appropriately selected depending on the distillation apparatus.

  In Step 2, the polybutene mixture having 16 or less carbon atoms obtained in Step 1 is hydrogenated to obtain a polybutene hydride, that is, a mixture of 16 or less carbon atoms containing isoparaffin. The polybutene having 16 or less carbon atoms obtained in Step 1 leaves a double bond at the polymerization terminal, and therefore causes deterioration such as coloring when stored for a long period of time. In order to solve this, a hydrogenation reaction is performed in step 2 to obtain a hydrogenated product. The hydrogenation reaction can be performed, for example, using nickel, palladium, or the like as a hydrogenation catalyst at a temperature of 180 to 230 ° C., and contacting hydrogen at a pressure of 2 to 10 MPa. The degree of hydrogenation for obtaining the paraffin mixture in the present invention is preferably 10 or less in terms of iodine value. A more preferred degree of hydrogenation is 1 or less in terms of iodine value, and a further preferred degree of hydrogenation is 0.1 or less in terms of iodine value. When the iodine value exceeds 10, oxidation by heat and light tends to proceed, and odor is likely to be generated.

  The paraffin mixture having 16 or less carbon atoms obtained in step 2 includes trace metal compounds contained in the catalyst used in the hydrogenation reaction, iron content generated by corrosion of the reactor due to the high acidity of the catalyst, etc. Trace metals may be mixed. These trace metals adversely affect the odor and storage stability of the paraffin mixture. Among trace metals, especially the iron content is a cause of an unpleasant odor due to the further worsening of the odor in the reaction in the subsequent distillation operation for obtaining the paraffin mixture in the present invention. Therefore, for the purpose of suppressing coloring and odor, in Step 3, a paraffin mixture having 16 or less carbon atoms is adsorbed with an adsorbent.

  As the adsorbent, inorganic and organic adsorbents are used. For example, clay, kaolin, talc, calcium carbonate, diatomaceous earth, zeolite, bentonite, acid clay, activated clay, vermiculite, silica gel, molecular sieve, and activated carbon are used. In particular, activated clay and clay are effective. These adsorbents can be used alone or in combination of two or more. The adsorbent is effective not only for physically removing trace metals and iron components derived from the hydrogenation reaction catalyst, but also for removing trace decomposition and by-product low-molecular oxides caused by high temperatures in hydrogenation, This is more effective for maintaining the stability of the product after distillation. The particle size of the adsorbent to be used is not particularly limited. However, when one kind of adsorbent is used, it is preferable to combine two or more adsorbents having different particle sizes. The combination of adsorbents is appropriately selected according to the dispersion of pressure in the column packed with the adsorbent and efficient processing. When two or more kinds of adsorbents are used, it is more effective in terms of production to pack 50 to 80% by volume of the smallest particle size with respect to the column volume.

  The paraffin mixture adsorbed in step 3 contains isododecane with a low flash point and an unpleasant odor. Therefore, in step 4, the paraffin mixture having 16 or less carbon atoms adsorbed in step 3 is distilled under reduced pressure, and 15% by mass or more, preferably 25% by mass or more with respect to the charged amount before performing this vacuum distillation. Distill off. In addition, from a viewpoint of suppressing the fall of the flash point of a paraffin mixture, 40 mass% or less is preferable with respect to the preparation amount before performing vacuum distillation, and 35 mass% or less is more preferable.

For distillation in vacuum distillation, the distillation method and distillation apparatus described in Step 1 above can be employed. The distillation conditions are such that the liquid temperature in the container is 50 to 180 ° C., preferably 100 to 180 ° C., and the internal pressure of the container is 0.5 to 80 kPa, preferably 5 to 80 kPa. By the distillation step of this step, isododecane and other low-boiling substances (such as saturated hydrocarbons having 8 carbon atoms) contained in the paraffin mixture can be distilled off.
Through the steps including the above steps 1 to 4, a paraffin mixture containing isoparaffin having 12 to 16 carbon atoms can be produced.

  The component (b) used in the cosmetic composition of the present invention is a heavy liquid isoparaffin, which is a mixture of long-chain hydrocarbons having side chains. Usually, a polymer of isobutene and n-butene is hydrogenated. It is obtained by adding.

Heavy liquid isoparaffin used in the present invention is 210 ° kinematic viscosity at F is 200~10000mm ² / s, preferably is 270~8000mm ² / s, more preferably 600~5000mm ² / s. If the kinematic viscosity at 210 ° F. is less than 200 mm ² / s, the moist feeling or gloss may be poor, whereas if it exceeds 10000 mm ² / s, blend preparation may be difficult.
The kinematic viscosity of heavy liquid isoparaffin can be measured according to the method described in JIS K 2283.

  Specific products of heavy liquid isoparaffin used in the present invention include “Pearl Reme 18” (average carbon number 72), “Pearl Reme 24” (average carbon number 96), “Pearl Ream 46” manufactured by NOF Corporation. (Average carbon number 184). One or more of these heavy liquid isoparaffins can be used.

In the cosmetic composition of the present invention, the content of (b) heavy liquid isoparaffin relative to the sum of (a) paraffin mixture and (b) heavy liquid isoparaffin is 1 to 30% by mass, preferably 2 to 2. 30 mass%, More preferably, it is 5-30 mass%, Most preferably, it is 5-25 mass%.
When the content of the component (b) is less than 1% by mass, the effect of imparting gloss, firmness, stiffness, and moist feeling may be poor. On the other hand, when the content exceeds 30% by mass, the compatibility with hair is poor. There is a fear.

  The cosmetic composition of the present invention can be produced by mixing (a) a paraffin mixture and (b) heavy liquid isoparaffin by a known mixing method, and is a known mixing device such as a stirrer such as a mill. , And kneaders can be used. In addition, the mixture may be heated, and the heating temperature is preferably 120 ° C. or lower.

  The cosmetic composition of the present invention can be used as a solid and liquid base material used in cosmetics and cleaning agents for hair and skin.

[Oil preparation for hair cosmetics, oil for skin cosmetics]
The hair cosmetic oil and skin cosmetic oil of the present invention contain the cosmetic composition of the present invention, and the content thereof can be appropriately selected. The content of the cosmetic composition in the hair cosmetic oil and the skin cosmetic oil of the present invention varies depending on the purpose of use, but is preferably 1 to 100% by mass, more preferably 1 to 90% by mass, Especially preferably, it is 2-70 mass%.

  The oils for hair cosmetics and skin cosmetics of the present invention comprise auxiliaries and additives such as surfactants, further oil components, humectants, pearlescent waxes, thickeners, thickeners, overfat. Agents, stabilizers, water-soluble and oil-soluble polymers, fats, waxes, lecithins, phospholipids, biogenic active substances, UV absorbers, UV scattering agents, organic and inorganic pigments, antioxidants, deodorants, whitening agents, Antiperspirant, hair restorer, analgesic and anti-inflammatory agent, blood circulation promoter, anti-dandruff agent, anti-dandruff agent, film forming agent, swelling agent, insect repellent, tyrosinase inhibitor (depigmenting agent), hydrotrope, solubilizer, It may contain preservatives, perfume oils, colorants, pH adjusters and chelating agents.

The oil for hair cosmetics and the oil for skin cosmetics of the present invention can be applied to various dosage forms, for example, provided in use forms such as liquid, cream, emulsion, gel, and mousse. Can do. The oils for hair cosmetics and skin cosmetics of the present invention include aerosol sprays, pump sprays, foam sprays, mist lotions, hair mist set lotions, hair styling, hair oils, body oils, and other shampoos and rinses. It is useful for products with conditioning functions such as permanent liquid, hair treatment, skin lotion, sun care, body care, etc.
Such hair cosmetic oils and skin cosmetic oils can also be produced by emulsification or mixing. For example, it can be produced by emulsification and mixing using a stirrer such as a homogenizer, a homomixer, or a mill, or using a stirrer to which another principle such as high pressure or ultrasonic waves is applied.

  Hereinafter, the present invention will be described more specifically with reference to production examples, examples and comparative examples. Various physical property values in each example were measured by the following methods.

<Iodine number>
It conforms to the iodine value test method of JIS K 0070.
<Boiling range>
It conforms to the distillation test method of JIS K 2254.
<Flash point>
Conforms to the closed flash point measurement method of JIS K 2265.

<Number average molecular weight>
The number average molecular weight (polystyrene conversion) was measured using a Shimadzu GPC (gel permeation chromatography) measuring device.

<Method for analyzing isododecane content>
Using isododecane as a sample, the elution position was confirmed by GC-14B gas chromatography analysis made by Shimadzu, and the content of the compound corresponding to the elution position was measured.
Gas chromatography analysis conditions Column: Nonpolar capillary column, 0.55 mm, 30 m, 5 μm
Temperature: 80 ° C-250 ° C, temperature rise analysis at 10 ° C / min

[Production Example 1]
The paraffin mixture was manufactured through the following steps 1-4.
360 g of a mixed gas composed of 30% by mass of isobutylene, 18% by mass of 1-butene and 25% by mass of 2-butene and a mixed gas of 4 carbon atoms and the remaining 27% by mass of butane gas are charged into an autoclave. The polymerization reaction was carried out in the presence to obtain a polymerization reaction system of isobutylene and normal butene.

(Process 1)
After the reaction, the unreacted gas in the autoclave was removed by nitrogen gas replacement, and then the polybutene mixture as the polymerization reaction mixture was extracted. The catalyst was removed by a caustic aqueous solution treatment and a water washing step. Next, the polybutene mixture after water washing is charged into a 1 L four-necked flask, heated by an oil bath, and after removing unreacted gas components dissolved in the polybutene mixture by nitrogen bubbling at an internal temperature of 40 ° C., Simple distillation was performed at an internal temperature of 140 ° C. and a degree of vacuum of 5 kPa. As a result, a polymer having 20 or more carbon atoms was left as a distillation residue in the flask, and a polybutene mixture having 16 or less carbon atoms was obtained. This polybutene mixture had a number average molecular weight of about 185.

(Process 2)
This polybutene mixture was hydrogenated in an autoclave with a hydrogenation catalyst (0.5% Pd-supported alumina catalyst) 10% by mass at a hydrogen pressure of 3 MPa and 220 ° C. to obtain 160 g of a paraffin mixture. The paraffin mixture had an iodine number of 0.1 and a number average molecular weight of about 180.

(Process 3)
A glass cylinder having an outer diameter of 4 cm and a length of 30 cm was filled with attapulgus clay and activated clay in a volume ratio of 50:50 in advance, and then filled with activated clay, and then an adsorption column was obtained. The paraffin mixture obtained in step 2 was continuously fed from the lower part of the adsorption column at a flow rate of 1 ml at a flow rate of 25 ° C. to perform adsorption treatment of trace metal compounds derived from the catalyst and from the apparatus material.

(Process 4)
150 g of the paraffin mixture after the adsorption treatment obtained in Step 3 is charged in the bottom container of the 15-stage Older Show shelf rectification column, put in an oil bath, and dried nitrogen gas until the liquid temperature in the container reaches 110 ° C. Bubbling was performed to avoid contact with air. When the liquid temperature in the container reached 110 ° C., vacuum distillation was performed for 8 hours under reduced pressure (10 kPa) with a reflux ratio of 10 and a distillation outflow temperature of 95 ° C. to distill off 25% by mass of the total amount charged. Thereafter, dry nitrogen gas was bubbled again under reduced pressure to cool the liquid in the bottom container to obtain 112.5 g of a paraffin mixture.
The 2, 2, 4, 6, 6-pentamethylheptane (isododecane) content in the paraffin mixture was 2% by mass. Moreover, the boiling point range was 188-205 degreeC, and flash point was 64 degreeC.

[Production Example 2]
In Step 4, except that 18% of the total amount charged was distilled off, the same operation as in Production Example 1 was performed to obtain 123 g of a paraffin mixture. The content of 2, 2, 4, 6, 6-pentamethylheptane (isododecane) in this paraffin mixture was 8% by mass. The boiling point range was 185 to 205 ° C, and the flash point was 62 ° C.

[Examples 1 to 6]
The oils for hair cosmetics of Examples 1 to 6 were prepared by blending the paraffin mixture of Production Example 1 or 2 and the heavy liquid isoparaffin described in Table 1 in the ratio of Table 1.

[Comparative Examples 1-4]
In addition to changing the blending amount of heavy liquid isoparaffin with respect to the paraffin mixture, instead of the paraffin mixture of Example 1, oils for hair cosmetics of Comparative Examples 1 to 4 in which mineral oil or cyclopentasiloxane was blended were prepared.

  Using the hair cosmetic oils of Examples 1 to 6 and Comparative Examples 1 to 4 (hereinafter, also referred to as hair oil), hair application tests were performed. In the hair application use test, 10 g of bleached hair bundles of healthy Chinese hair were used, and 1 g of each sample was applied to a hair bundle that had been washed in advance with water and dried with a dryer, and each sample was applied by hand. Thereafter, 20 females (23 to 55 years old) were panelists, and each feeling of use was evaluated in comparison with untreated hair. Further, the appearance of the hair oil was visually evaluated. The results are shown in Table 1. In addition, the numerical value of the compounding composition in the following description represents the mass%.

* 1 “Moresco Oil P-55” (Matsumura Oil Co., Ltd.)
* 2 “SH245” (manufactured by Toray Dow Corning Co., Ltd.)
* 3 “Pearl Reme 18” (manufactured by NOF Corporation): 210 ° F kinematic viscosity 290 mm ² / s
* 4 “Pearl Reme 24” (manufactured by NOF Corporation): 210 ° F. kinematic viscosity 740 mm ² / s
* 5 “Pearl Ream 46” (manufactured by NOF Corporation): 210 ° F kinematic viscosity 5000 mm ² / s

Specifically, the panelists evaluated as follows.
(1) Ease of familiarity The panelists evaluated the touch when the hair oil 1g was applied and familiarized with the following criteria.
2 points: When it feels easy to adjust to hair.
1 point: When feeling slightly unfamiliar with hair.
0 point: When it is difficult to adjust to hair.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more. It is a hair oil that is very familiar to hair.
A: The total score is 30 points or more and less than 35 points. It is a hair oil that is well adapted to the hair.
Δ: Total score is 20 points or more and less than 30 points. Hair oil is a little bad for hair.
X: The total score is less than 20 points. It is a hair oil that does not fit well into the hair.

(2) Smooth feeling Each panel was evaluated for smooth feeling when 1 g of each hair oil was applied and blended, according to the following criteria.
2 points: When the finger of the hair is felt good when the hair is scraped with a hand comb.
1 point: When the hair feels normal when scooping up with a hand comb.
0 points: When the hair feels bad when the hair is scraped with a hand comb.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more. It is a hair oil with a very smooth hair.
A: The total score is 30 points or more and less than 35 points. It is a hair oil that gives a smooth feel to the hair.
Δ: Total score is 20 points or more and less than 30 points. The hair oil is a slightly bad hair.
X: The total score is less than 20 points. It is a hair oil that feels bad on the hair.

(3) Stickiness Each hair oil 1g was applied to hair lightly towel-dried after shampooing, and the feel when dried with a dryer was evaluated according to the following criteria.
2 points: When the hair feels non-sticky.
1 point: When the hair feels slightly sticky.
0 points: When the hair feels sticky.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more. Hair oil that does not feel sticky to the hair.
A: The total score is 30 points or more and less than 35 points. A hair oil that feels almost no sticky hair.
Δ: Total score is 20 points or more and less than 30 points. A hair oil that feels slightly sticky.
X: The total score is less than 20 points. A hair oil that feels sticky to the hair.

(4) Gloss About the gloss of the hair, evaluation by visual observation and evaluation of quantitative measurement of internal reflection and external reflection by a goniophotometer (manufactured by Murakami Color Research Laboratory) were performed.
(Visual) 1 g of each hair oil was applied and subjected to panel evaluation according to the following criteria.
2 points: When the gloss feels very good.
1 point: When the gloss feels so good.
0 point: When it feels that there is no gloss.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more. It is a very good hair oil.
A: The total score is 30 points or more and less than 35 points. Hair oil with good gloss.
Δ: Total score is 20 points or more and less than 30 points. Hair oil with a slight gloss.
X: The total score is less than 20 points. Hair oil without gloss.

(Quantitative measurement with goniophotometer)
The hair oils of Examples 1 to 6 and Comparative Examples 1 to 4 were each taken in a 1-g petri dish, and 20 were randomly extracted from the hair bundle so that they were uniformly contacted in the petri dish for 1 minute. Thereafter, the hair was taken out, lightly removed so that excess hair oil would fall naturally, and then removed by being pinched with Kim Towel (registered trademark), and then dried at room temperature for 30 minutes. Thereafter, the gloss of the hair was measured in a constant temperature and humidity chamber at 25 ° C. and 60% RH using a photogoniometer (manufactured by Murakami Color Research Laboratory Co., Ltd.). Specifically, the incident angle of light is set to 30 °, the direction of the incident light is made to coincide with the direction of the hair shaft, the received light angle is changed, the reflected light distribution is measured, and the following formula (A) The surface reflection and the internal reflection were calculated by the formula (B).

Surface reflection (G) = Sf / d (A)
Internal reflection (T) = (Sr / Sf) × 10 (B)

  Here, d is diffuse reflection in the normal direction of the hair, Sf is the specular reflection peak intensity of the hair, and Sr is the maximum peak intensity of internal reflection of the hair. It was shown in Table 1 as a relative value when the hair which did not apply hair oil was made into a blank and the gloss measurement result was set to 100.

(5) Tightness and firmness 1 g of each hair oil was applied, and panel evaluation was performed according to the following criteria.
2 points: When the hair feels firm and firm.
1 point: When the hair feels slightly firm and firm.
0 point: When the hair feels no firmness or firmness.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more. Hair oil with very good elasticity and firmness.
A: The total score is 30 points or more and less than 35 points. Hair oil with good elasticity and firmness of hair.
Δ: Total score is 20 points or more and less than 30 points. Hair oil with slightly insufficient elasticity and firmness.
X: The total score is less than 20 points. Hair oil with insufficient firmness and firmness of hair.

(6) Moist feeling of unity 1 g of each hair oil was applied, and panel evaluation was performed according to the following criteria.
2 points: When the hair feels very moist and coherent.
1 point: When the hair feels moist and coherent.
0 points: When the hair feels not moist and coherent.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more. It is a hair oil with a moist and coherent feeling of hair.
A: The total score is 30 points or more and less than 35 points. It is a hair oil with a moist and coherent feeling of hair.
Δ: Total score is 20 points or more and less than 30 points. It is a hair oil with a moist and coherent feeling of hair.
X: The total score is less than 20 points. It is a hair oil that does not feel moist and coherent.

  From the results of Examples 1 to 6, according to the oils for hair cosmetics of the present invention, all are easy to adjust when applied to the hair and are not sticky after drying. In addition, it can be seen that the effect of finishing with moist and coherent hair can be obtained.

On the other hand, in Comparative Examples 1-4, sufficient performance is not obtained.
That is, in Comparative Example 1, since the blending amount of heavy liquid isoparaffin was lower than the lower limit value with respect to the paraffin mixture, glossiness, firmness, and cohesion were insufficient.
In Comparative Example 2, since the blending amount of heavy liquid isoparaffin was higher than the upper limit value with respect to the paraffin mixture, it was difficult to get used to and was sticky.
In Comparative Example 3, since the paraffin mixture was replaced with mineral oil, the familiarity with the heavy liquid isoparaffin was poor, and overall the evaluation was low.
In Comparative Example 4, cyclopentasiloxane blended in place of the paraffin mixture was preferable as the solvent for the highly polymerized silicone oil, but was not suitable as the solvent for the heavy fluid isoparaffin and did not dissolve, so it could not be evaluated. It was.

[Examples 7 to 11]
The oil composition for skin cosmetics of Examples 7 to 11 (hereinafter referred to as skin cosmetics) was prepared by blending the paraffin mixture of Production Example 1 or 2, the heavy liquid isoparaffin described in Table 2, and the common ingredients in the proportions shown in Table 2. (Also referred to as oil for use).

[Comparative Examples 5 to 7]
The skin cosmetic oils of Comparative Examples 5 to 7 were prepared by blending mineral oil in place of the paraffin mixture of Example 7 in addition to the blended amount of heavy liquid isoparaffin with respect to the paraffin mixture.
About each skin cosmetic oil, 20 women (23-55 years old) were panelists, and the usability was evaluated.

* 1 “Moresco Oil P-55” (Matsumura Oil Co., Ltd.)
* 2 “Pearl Reme 18” (manufactured by NOF Corporation): 210 ° F kinematic viscosity 290 mm ² / s
* 3 “Pearl Reme 24” (manufactured by NOF Corporation): 210 ° F. kinematic viscosity 740 mm ² / s
* 4 “Pearl Ream 46” (manufactured by NOF Corporation): 210 ° F kinematic viscosity 5000 mm ² / s

Specifically, the panelists evaluated as follows.
(1) Ease of familiarity 0.2 g of skin cosmetic oil was applied to the inner side of the human forearm, and the ease of familiarity was subjected to panel evaluation according to the following criteria.
2 points: When it feels easy to adjust to the skin.
1 point: When it is difficult to adjust to the skin.
0 points: When it is difficult to adjust to the skin.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more. It is a skin cosmetic oil that is very familiar to the skin.
A: The total score is 30 points or more and less than 35 points. It is a skin cosmetic oil that is well-familiar with the skin.
Δ: Total score is 20 points or more and less than 30 points. It is a skin cosmetic oil with a slightly poor skin fit.
X: The total score is less than 20 points. It is a skin cosmetic oil that does not fit well into the skin.

(2) Gloss Each skin cosmetic oil (0.2 g) was applied to the inner side of a human forearm, and the gloss after 1 hour was subjected to panel evaluation according to the following criteria.
2 points: When the gloss feels very good.
1 point: When the gloss feels so good.
0 point: When it feels that there is no gloss.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more. It is a skin cosmetic oil with very good gloss.
A: The total score is 30 points or more and less than 35 points. It is a skin cosmetic oil with good gloss.
Δ: Total score is 20 points or more and less than 30 points. It is a skin cosmetic oil with a slight gloss.
X: The total score is less than 20 points. It is a skin cosmetic oil that is not glossy.

(3) Moisturizing feeling Skin cosmetic oil (0.2 g) was applied to the inner side of the human forearm, and the moist feeling after 1 hour was panel-evaluated according to the following criteria.
2 points: When feeling moisturized.
1 point: When feeling normal.
0 point: When there is no moisturizing feeling.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more. It is a skin cosmetic oil with a good moisturizing feeling.
A: The total score is 30 points or more and less than 35 points. Moisturizing feeling is normal skin cosmetic oil.
Δ: Total score is 20 points or more and less than 30 points. A skin cosmetic oil with a low moisturizing feeling.
X: The total score is less than 20 points. It is a skin cosmetic oil with no moisturizing feeling.

(4) Sense of firmness Skin cosmetic oil 0.2g was applied to the inner side of the human forearm, and the elasticity after 1 hour was subjected to panel evaluation according to the following criteria.
2 points: When the skin feels firm.
1 point: When the skin feels somewhat firm.
0 point: When the skin feels not firm.
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more. It is a skin cosmetic oil with very good skin firmness.
A: The total score is 30 points or more and less than 35 points. It is a skin cosmetic oil with good skin firmness.
Δ: Total score is 20 points or more and less than 30 points. It is a skin cosmetic oil with slightly insufficient skin firmness.
X: The total score is less than 20 points. It is a skin cosmetic oil that does not cause skin firmness.

(5) Feel (after use)
Skin cosmetic oil 0.2 g was applied to the inner part of the human forearm, and the touch after use was panel-evaluated according to the following criteria.
2 points: When the feel is good (smooth).
1 point: When feeling normal.
0 points: When feeling uncomfortable (unnatural feel).
The total score of 20 people was calculated | required and it determined as follows.
A: The total score is 35 points or more. It is a skin cosmetic oil with a very good skin feel.
A: The total score is 30 points or more and less than 35 points. Skin cosmetic oil with good skin feel.
Δ: Total score is 20 points or more and less than 30 points. It is a skin cosmetic oil with a slightly bad skin feel.
X: The total score is less than 20 points. It is a skin cosmetic oil with a poor skin feel.

  From the results of Examples 7 to 11, according to the oil for skin cosmetics of the present invention, all are easy to adjust when applied to the skin, give the skin gloss, firmness, and finish in a moisturizing state. It turns out that the effect that the touch after use is also favorable is acquired.

On the other hand, in Comparative Examples 5-7, sufficient performance is not obtained.
That is, in the comparative example 5, since the compounding quantity of heavy fluid isoparaffin exceeded the upper limit with respect to a paraffin mixture, it was difficult to adjust and the touch after use was bad.
In Comparative Example 6, since the blending amount of heavy liquid isoparaffin was lower than the lower limit value with respect to the paraffin mixture, there was not much gloss.
In Comparative Example 7, the paraffin mixture was replaced with mineral oil and heavy fluid isoparaffin was not blended, so there was no gloss, the feeling after use was poor, the feeling of firmness was somewhat insufficient, and overall evaluation It was low.

Claims (3)

(A) a paraffin mixture having an isoparaffin having 12 to 16 carbon atoms and having a boiling range of 185 to 215 ° C., and (b) a heavy liquid isoparaffin having a kinematic viscosity at 210 ° F. of 200 to 10,000 mm ² / s, And (b) a heavy liquid isoparaffin content relative to the total of (a) a paraffin mixture and (b) heavy liquid isoparaffin.   A hair cosmetic oil containing the cosmetic composition according to claim 1.   The oil for skin cosmetics containing the cosmetic composition of Claim 1.