JP6457765B2 - Oil-in-water emulsified cosmetic - Google Patents

Description

  The present invention relates to an oil-in-water emulsified cosmetic, and more specifically, contains a polybutene having a number average molecular weight of 1000 to 3000 or a hydrogenated polyisobutene, diisostearyl malate, and an oil which is an esterified product of diglycerin and a fatty acid. An oil-in-water emulsified cosmetic characterized in that the total content of these is 20% by mass or more based on the total amount of oil, which imparts a firm feeling to the skin and maintains the firmness. The present invention relates to an oil-in-water emulsified cosmetic having characteristics that it is excellent and further has no stickiness.

  In recent years, the application functions of cosmetics have been diversified, and in terms of making the skin look beautiful, not only the purpose of imparting a whitening effect and a moisturizing effect, but also for the purpose of skin firmness and elasticity. ing. For example, cosmetics (for example, refer to Patent Document 1) in which an oily component including liquid oil and solid fat and a cationic water-soluble polymer are combined, or stearyl stearate and hydrocarbon are combined to provide immediate effect and durability. In addition, an emulsified cosmetic material that is excellent in imparting firmness to the skin has also been proposed (for example, see Patent Document 2). Moreover, what blends a specific copolymer and forms the film by a copolymer on skin and gives a firm feeling is known (for example, refer patent document 3). In addition, a combination of an oil-soluble film-forming agent and a highly volatile oil agent can give a fast-acting feeling of elasticity, and a combination of a higher alcohol, a higher fatty acid and an N-long chain acylamino acid surfactant. It is also known to maintain a quick feeling of elasticity, to maintain the feeling of elasticity, to improve usability and usability such as good stretch and no stickiness, and to improve moisture retention (for example, Patent Document 4). reference).

JP 2009-286768 A JP 2010-235472 A JP 10-316550 A JP2013-136546A

However, in the technology of Patent Document 1, the solid fat and the cationic water-soluble polymer give a firm feeling, but when a relatively large amount of solid oil is blended, the feeling of stickiness is used. There was a case.
With the technology of Patent Document 2, it is possible to obtain an immediate firmness due to stearyl stearate or the like to be blended, but depending on the blending amount, it may be difficult to achieve an appropriate firmness unique to solid oil, In some cases, the durability was not excellent.
In the technique of Patent Document 3, when a firm feeling is given by forming a film with a copolymer, a firm feeling may be felt immediately after use by the film with the copolymer. Because of the weak feeling of adhesion, the film tends to tear due to the movement of the skin at places where the movement of the eyes, the mouth, etc. is large, and it may be peeled off.
In the technique of Patent Document 4, when an oil-soluble film forming agent and a highly volatile oil agent, a higher alcohol, a higher fatty acid and an N-long chain acylamino acid surfactant are used in combination, Immediate firmness obtained by volatilization of the volatile oil agent was not satisfactory in use feeling because a firm film was formed because the volatilization speed was too high.
In consideration of the above-mentioned problems in the prior art, in the present invention, not only gives the skin a firm feeling, but also has an excellent non-stickiness, and the firmness persists. The aim was to develop an oil-in-water emulsified cosmetic that is easy to embody.

  In view of the above situation, as a result of earnest research, the present inventor is effective to use polybutene or hydrogenated polyisobutene (hereinafter sometimes abbreviated as polybutene) having a specific number average molecular weight as a component that gives a firm feeling to the skin. I found out. We tried to apply to oil-in-water emulsified cosmetics that have good spreadability and excellent usability when using these, but it is possible to give a firm feeling such as polybutene, but if you feel the stickiness peculiar to oil was there. Therefore, it was considered necessary to prevent the polybutene from having a sticky feeling due to its high compatibility with these polybutenes, and an oil agent having such a function was examined. At the same time, it is also necessary to improve the persistence of firmness after imparting firmness, and as a result of repeated studies, diisostearyl malate is particularly effective against polybutene that imparts firmness. The oil-in-water emulsified cosmetics that have been found to have a high effect of reducing stickiness, and that an ester of a specific fatty acid and diglycerin further improves the firmness of polybutene, etc. As a result, the present inventors have found that the above problems can be solved, and have completed the present invention.

That is, the present invention includes the following components (A) to (C);
(A) A polybutene having a number average molecular weight of 1000 to 3000 or a hydrogenated polyisobutene (B) an oil which is an esterified product of diisostearyl malate (C) diglycerin and a fatty acid, and components (A) and (B) The total content of (C) is about 20% by mass or more based on the total oil amount, and relates to an oil-in-water emulsified cosmetic.

It said components (A), the present invention relates to content mass ratio (A) / (B) is, in the water you characterized in that from 0.1 to 10 oil type emulsified cosmetic composition of (B).

  The content ratio (B) / (C) of the components (B) and (C) is from 0.1 to 10. The present invention relates to an oil-in-water emulsified cosmetic.

  Furthermore, it is related with the oil-in-water type emulsion cosmetic characterized by containing a component (D) hydrogenated phospholipid.

  The oil-in-water emulsified cosmetic composition of the present invention imparts a firm feeling to the skin, is excellent in the sustainability of the firm feeling, and further has no stickiness.

Hereinafter, the present invention will be described in detail. In the present specification, “to” means a range including numerical values before and after.
Component (A) used in the present invention is polybutene or hydrogenated polyisobutene having a number average molecular weight of 1000 to 3000. Polybutene is a copolymer of isobutene. For example, polybutene obtained by polymerizing isobutene (C4 gas) using a catalyst can be used. Hydrogenated polyisobutene is obtained by hydrogenating polyisobutene composed of long-chain hydrocarbons by polymerization of isobutene. Those having a number average molecular weight of 1000 to 3000 are necessary in the present invention. By setting the number average molecular weight within this range, the firmness of the skin can be improved after applying the cosmetic. In addition, the number average molecular weight was measured by GPC (polystyrene conversion). Examples of commercially available polybutenes include Idemitsu Polybutene 2000H food additive (number average molecular weight 2900), Idemitsu Polybutene 300H (number average molecular weight 1330) (both manufactured by Idemitsu Kosan Co., Ltd.), and purified polybutene HV-100F (SB) (number average molecular weight). 940) (manufactured by Nippon Natural Products), polybutene 30N (number average molecular weight 1350), polybutene 200N (number average molecular weight 2650) (both manufactured by NOF Corporation), Nisseki Polybutene Grade HV-300 (number average molecular weight 1400) Nisseki There is polybutene grade HV-1900 (number average molecular weight 2900) (both manufactured by JX Nippon Oil & Energy Corporation). Examples of the hydrogenated polyisobutene include Pearl Ream 18 (number average molecular weight 1000), Pearl Ream 24 (number average molecular weight 1350), Pearl Ream 46 (number average molecular weight 2650) (both manufactured by NOF Corporation) and the like.
In addition, the number average molecular weight in this invention measured the number average molecular weight (polystyrene conversion) using Shimadzu GPC (gel permeation chromatography) measuring apparatus. The average molecular weight of the component (A) is preferably 1000 to 3000, but if the average molecular weight is less than 1000, a sufficient sense of tension may not be obtained, and if it exceeds 3000, In some cases, the spread of the skin during application may cause a burden on the skin.

  The content of the component (A) used in the oil-in-water emulsified cosmetic of the present invention is not particularly limited, but it is not only the effect of imparting a sense of firmness immediately after application, but also the sustainability of the sense of firmness. Is preferably 0.1 to 20% by mass (hereinafter simply referred to as “%”), more preferably 0.5 to 10%, and still more preferably 3 to 10%.

  The component (B) diisostearyl malate used in the present invention is a diester of malic acid and isostearyl alcohol, and is a colorless to pale yellow transparent viscous liquid oil, but a liquid oil having high polarity. It is. An example of isostearyl alcohol is 5,7,7-trimethyl-2- (1,3,3-trimethylbutyl) -octanol. The component (A) described above is contained mainly in anticipation of the effect of imparting firmness to the skin, but when this content is increased, a sticky feeling may be felt on the skin during cosmetic application. The component (B) is a component that is compatible with the component (A) as a non-emulsified oil of an oil-in-water emulsified cosmetic, and is mainly contained with the expectation of reducing such a sticky feeling. . Examples of commercially available diisostearyl malate include Cosmol 222 (manufactured by Nisshin Oillio Co., Ltd.), Esterol DISM (manufactured by National Mimatsu Co., Ltd.), Hymalate DIS (manufactured by Higher Alcohol Industry Co., Ltd.) and the like.

  The content of the component (B) used in the oil-in-water emulsified cosmetic of the present invention is 0 from the viewpoint that the stickiness to the skin can be reduced by being compatible with the component (A). 0.1 to 30%, and more preferably 0.5 to 15%.

  Furthermore, by making the content ratio (A) / (B) of the components (A) and (B) into a specific ratio range, the effect of reducing the stickiness of the component (B) and the elasticity of the component (C) described later The effect of improving the sustainability of the feeling can be made more effective, which is preferable. As such a range, it is 0.1-10, Preferably it is 0.2-5, More preferably, by making it 0.5-2, the oil-in-water which is excellent in the further reduction of a stickiness feeling Type emulsified cosmetics are obtained and preferred.

  The oil agent which is an esterified product of component (C) diglycerin and fatty acid used in the present invention is expected to be effective in improving the sustainability of firmness in the present invention. The fatty acid part can be variously selected, and examples thereof include saturated, unsaturated, straight-chain, and branched fatty acids having 8 to 20 carbon atoms, and the carbon number is preferably 14 to 20, More preferably, it is 16-20. Further, isostearic acid is preferable because a branched structure is preferable from the viewpoint of compatibility with the component (B). Examples of the ester with diglycerin include mono-, di-, tri-, and tetra-esters, and more preferred are diesters and triesters. Such components (C) are commercially available as Cosmol 41V, Cosmol 42V, Cosmol 43V, Cosmol 44V, Saracos DG-158 (manufactured by Nisshin Oilio), NIKKOL DGTIS, NIKKOL DGNO-CV (Nikko Chemicals) Manufactured), EMALEX DSG-2, EMALEX DISG-2, EMALEX DISG-2EX, EMALEX TISG-2 (manufactured by Nihon Emulsion Co., Ltd.), Risolex PGIS21, Risolex PGIS22, Risolex PGIS23 (manufactured by Higher Alcohol), and the like. This is thought to be due to the fact that the isostearic acid skeleton of the component (B) described above has in common, leading to the effect of sustaining firmness in the present invention.

  The content of the component (C) used in the oil-in-water emulsified cosmetic of the present invention is 0.1 to 20 from the viewpoint that in addition to reducing the sticky feeling, it is possible to improve the sustainability of the firmness. %, And more preferably 0.5 to 10%.

  In the present invention, these components (A), (B) and (C) are essential. The total amount of oil containing these is not particularly limited, but is preferably 10 to 60% and more preferably 20 to 50% with respect to the total amount of the oil-in-water emulsified cosmetic.

The total content of components (A), (B), and (C) needs to be 20% or more based on the total oil amount in the oil-in-water emulsion cosmetic. That is, in the present invention, the components (A), (B) and (C) are contained in a specific ratio with respect to the total amount of oil in the oil-in-water emulsified cosmetic, and the invention is further increased by increasing this ratio. The effect can be further improved. Such a ratio is more preferably 30% or more, further preferably 40% or more, and further preferably 50% or more. Such a range is preferable because it is excellent in improving the firmness and stickiness, as well as improving the sustainability of the firmness.
In addition, as oil agents other than component (A), (B), (C) in this invention, if it is an oil agent normally used for cosmetics, it will not specifically limit, Origin of animal oil, vegetable oil, synthetic oil, etc., and solid Regardless of properties such as oil, semi-solid oil, liquid oil, etc., hydrocarbons, oils and fats, waxes, hardened oils, ester oils, higher alcohols, silicone oils, fluorine oils, lanolin derivatives, etc. The oil agent is mentioned.

  Furthermore, by making the content ratio (B) / (C) of the components (B) and (C) within a specific ratio range, the effect of reducing the stickiness of the component (B) and the elasticity of the component (C) The effect of improving sustainability can be made more effective, which is preferable. As such a range, it is 0.1-10, Preferably it is 0.2-5, More preferably, by setting it as 0.5-2, the improvement of a further tension feeling and a tension feeling are also carried out. An oil-in-water emulsified cosmetic material that is excellent in improving the sustainability is preferable.

  The oil-in-water emulsified cosmetic of the present invention preferably further contains a component (D) hydrogenated phospholipid in order to reduce stickiness. The phospholipid is a lipid derived from a living body and is not particularly limited as long as it is used as a raw material for cosmetics because it has biocompatibility, skin moisture retention, and skin protection properties. In the present invention, the phospholipid can also be used as an emulsifier in an oil-in-water emulsified cosmetic. In this case, it is preferable to contain the component (D) because it may not be necessary to contain other surfactants. The component (D) is particularly preferable because it can be expected to provide a firmness-imparting effect as the component (D) in addition to the firmness-feeling effect of the components (A), (B), and (C). Can do.

Examples of such hydrogenated phospholipids include hydrogenated soybean phospholipid, hydrogenated egg yolk phospholipid, hydrogenated phosphatidylcholine, hydrogenated phosphatidylserine, etc., and hydrogenation in which one fatty acid group is removed from the hydrogenated phospholipid. It may be lysophospholipid. Examples of commercially available hydrogenated phospholipids are Resinol S-10, Resinol S-10E, Resinol S-10M, Resinol S-10EX, Resinol S-PIE (manufactured by Nikko Chemicals), COATSOME NC-21 (manufactured by NOF) ), Phospholipon 100H, Phosphopon 90H, Phospholipon 80H, Phospholipon 90G (manufactured by Phospholipid). Examples of the hydrogenated lysophospholipid include LP70H (manufactured by Nippon Seika Co., Ltd.), SLP-white lyso H, SLP-LPC 70H (manufactured by Sakai Oil Co., Ltd.), and the like.
In general, phospholipids having a high phosphatidylcholine purity are often used as cosmetics. However, in the present invention, it is not necessary that the phosphatidylcholine (PC) purity be high. In the present invention, it is preferable to contain diethanolamine, phosphatyl diinositol and the like. Therefore, the PC purity is preferably 90% or less, more preferably 70% or less, and even more preferably 50% or less. Of the commercial products, Resinol S-10 is particularly suitable.

  The content of the component (D) used in the oil-in-water emulsified cosmetic of the present invention is 0.1 to 10% from the viewpoint of reducing stickiness at the time of application and the effect in the oil-in-water emulsified cosmetic. Yes, more preferably 0.5 to 5%.

  The present invention is an oil-in-water emulsified cosmetic and contains water. Here, water is used as a dispersion medium of the oil-in-water emulsified cosmetic of the present invention, and is not particularly limited as long as it is usually used in cosmetics. For example, purified water, distilled water, ion-exchanged water, Examples include tap water. Although not particularly limited, the content is preferably 10 to 60%, more preferably 20 to 50%.

  The oil-in-water emulsified cosmetic of the present invention comprises the above-mentioned essential components, but it is preferable to add a polyhydric alcohol as an agent for further improving the effect of firmness in addition to these components. . Such polyhydric alcohols are not particularly limited, but include sugar alcohols such as sorbitol and mannitol in addition to glycerin, 1,3-butylene glycol, and dipropylene glycol. In addition, polyhydric alcohol will not be specifically limited if normally used for cosmetics. Furthermore, in the present invention, the total content of these polyhydric alcohols is in the range of 0.1 to 10 with respect to the total content of components (A) to (C), so that the persistence of firmness is maintained. It contributes to improvement and can be made more preferable.

  In the oil-in-water emulsified cosmetic of the present invention, in addition to the above-described essential components, various components usually used in cosmetics can be appropriately blended as necessary. Examples of such components include surfactants, oil agents other than components (A) to (C), aqueous components such as alcohols and water-soluble polymers, humectants, thickeners, preservatives, and UV absorbers. , PH adjusters, fragrances, antioxidants, powders, medicinal ingredients and the like.

  Although the manufacturing method of the oil-in-water type emulsion cosmetics of this invention is not specifically limited, what mixed component (A)-(C) and other additives etc. as needed was used for component (D ) And an optional component (surfactant or the like) mixed and dispersed as required, and then water is added and emulsified. Moreover, it is preferable to mix | blend, after mixing and dispersing component (A)-(C) previously as mentioned above.

  The oil-in-water emulsified cosmetic of the present invention is not particularly limited, but examples of the shape include liquid, gel, emulsion, cream, semi-solid, and solid. The product forms include facial cleansing foams, facial cleansing creams, cleansings, massages, packs, skin lotions, milky lotions, creams, serums, makeup bases, sunscreens and other skin cosmetics, foundations, white powder, eye shadows, eye Liner, mascara, eyebrow, concealer, lipstick, lip balm and other finishing cosmetics, hair mist, shampoo, rinse, treatment, hair tonic, hair cream, pomade, tic, liquid hair conditioner, set lotion, hair spray, etc. Cosmetics etc. can be illustrated. Among these, eye creams for the eyes are oil-in-water emulsified cosmetics that are easy to exert the effects of the present invention as those used for areas of concern such as wrinkles. Moreover, as the usage method, a method of taking an appropriate amount in a normal hand, a method of using it by impregnating a nonwoven fabric or the like, and the like are mentioned.

  The oil-in-water emulsified cosmetic of the present invention thus obtained is excellent in firmness immediately after use, but does not give a sticky feeling, and is also excellent in sustainability of firmness. There is a feature.

Hereinafter, the present invention will be described in detail with reference to examples. Note that these do not limit the present invention.
Invention products 1-16 and comparative products 1-5: oil-in-water emulsified cosmetic (eye cream)
Eye creams were prepared using the compositions shown in Tables 1 to 3 and the following production method. After applying 1 g of each sample to the eye cream shown in Tables 1 to 3 on a side of about 2 cm around the eye area by 20 panelists specializing in cosmetics evaluation, "skin firmness (immediately after application)", "skin firmness" Each item of “property (after 5 hours of application)” and “no stickiness” was evaluated and determined by the following evaluation methods and criteria, and the results are shown in Tables 1 to 3.

(Production method)
A: Components (1), (2) and (20) are mixed uniformly at room temperature and heated to 70 ° C.
B: Components (3) to (16) are heated to 70 ° C. and added to A to form a gel.
C: Components (17) to (21) are heated to 70 ° C., added to B and emulsified.
D: After cooling C to 40 ° C., component (23) was added and mixed to obtain an eye cream.

(Evaluation method 1: Skin firmness (immediately after application))
Samples of the present invention products 1-16 and comparative products 1-5 were applied to the eyes of 20 professional evaluators, a questionnaire was conducted on the sense of firmness immediately after application, and evaluation was performed according to the following criteria.

(A) Four-level evaluation criteria (evaluation)
A: More than 16 evaluators answered that the skin after application was firm.
A: 12 to 15 evaluators who answered that the skin after application had a firm feeling.
Δ: Eight to eleven evaluators who answered that the skin after application had a firmness.
X: Seven or less evaluators answered that the skin after application had a firm feeling.

(Evaluation method 2: Persistence of firmness of skin (5 hours after application))
The samples of the inventive products 1 to 13 and the comparative products 1 to 5 are applied to the eyes of 20 professional evaluators, and a questionnaire is conducted on “skin persistence (after 5 hours)”, and the following criteria It was evaluated with.

(B) Four-level evaluation criteria (evaluation)
A: More than 16 evaluators answered that the skin after 5 hours of application had a firm feeling.
A: 12 to 15 evaluators who answered that the skin after 5 hours of application had a firm feeling.
(Triangle | delta): Eight to eleven evaluators who answered that there was a firmness in the skin after 5 hours of application.
X: Seven or less evaluators answered that the skin after 5 hours of application had a firm feeling.

(Evaluation Method 3: No stickiness)
Samples of the present invention products 1 to 13 and comparative products 1 to 5 were applied to the eyes of 20 professional evaluators, and a questionnaire was conducted on “no stickiness” and evaluated according to the following criteria.

(B) Four-level evaluation criteria (evaluation)
A: More than 16 evaluators answered that there was no stickiness on the skin after application.
A: 12 to 15 evaluators who answered that the skin after application was not sticky.
Δ: Eight to eleven evaluators who answered that the skin after application had no stickiness.
X: Seven or less evaluators answered that there was no stickiness on the skin after application.

In the present invention products 1 to 16, oil-in-water emulsified cosmetics are excellent in the firmness of the skin (immediately after application), but do not give a sticky feeling and are also excellent in the sustainability of the firmness. It was.
In contrast, Comparative Product 1 using polybutene having a number average molecular weight of 350 instead of component (A) was inferior in skin firmness (immediately after application) and its sustainability. In Comparative Product 2 containing no component (A), the firmness immediately after application and its sustainability were sufficient, but the stickiness was inferior. It is considered that the number average molecular weight in the range of 1000 to 3000 affects the strength of stickiness and stickiness. In comparative product 3 in which trimethylolpropane triisostearate was used instead of component (C), the firmness immediately after coating and the durability thereof were inferior. Further, Comparative Product 4 in which propylene glycolicol isostearate is used instead of component (D) is inferior in elasticity and particularly in its sustainability, and is diglycerin and saturated, unsaturated or linear chain having 8 to 20 carbon atoms. An oil agent having a diglycerin skeleton that is a mono-, di-, tri-, or tetra-esterified product with any branched fatty acid is a particularly excellent component in sustainability, and the effect of the invention is obtained when the component is not contained. I found out I couldn't (A + B + C) / Comparative product 5 having a total oil amount of 10% was inferior in the firmness and durability of the skin immediately after application.

Example 2: Oil-in-water emulsified cosmetic (cream for eyes)
(Ingredient) (%)
1. Hydrogenated lecithin 2
2. Concentrated glycerin 10
3. Cetostearyl alcohol 1
4). Polybutene (* 5) 2
5. Diglyceryl triisostearate 3
6). Diisostearyl malate 2
7). Purified water remaining amount 8. Birch extract 0.1
9. Sandalwood extract 0.1
10. Carboxyvinyl polymer 1
11. Sodium hydroxide 0.35
12 Polyvinyl alcohol 4

(Production method)
A: Components (1) to (2) are uniformly mixed at room temperature and heated to 70 ° C.
B: Components (3) to (6) are heated to 70 ° C. and added to A to form a gel.
C: The component (7) is heated to 70 ° C., added to B and emulsified.
D: After cooling C to 40 ° C., components (8) to (12) were added to obtain an eye cream.

  The eye cream of Example 2 was an oil-in-water emulsified cosmetic that is excellent in firmness immediately after use but does not give a sticky feeling and also has excellent persistence.

Example 3: Oil-in-water emulsified cosmetic (massage cream)
(Ingredient) (%)
1. Hydrogenated lecithin 2
2. Diglycerin 10
3. Vaseline 1
4). Hydrogenated polyisobutene (* 2) 3
5. Diglyceryl monoisostearate 5
6). Diisostearyl malate 7
7). Liquid paraffin 10
8). Purified water remaining 9. Alkyl-modified carboxyvinyl polymer 1
10. Triethanolamine appropriate amount 11.1,3-butylene glycol 5
12 Hyaluronic acid 0.1
13. Rice bran extract 0.1
14 Royal Jelly Extract 0.1

(Production method)
A: Components (1) to (2) are uniformly mixed at room temperature and heated to 70 ° C.
B: Components (3) to (7) are heated to 70 ° C. and added to A to form a gel.
C: Components (8) to (11) are heated to 70 ° C., added to B and emulsified.
D: After cooling C to 40 ° C., components (12) to (14) were added to obtain a massage cream.

The massage cream of Example 3 was an oil-in-water emulsified cosmetic that imparted firmness to the skin, was excellent in the sustainability of the firmness, and was also excellent in no stickiness.

Example 4: Oil-in-water emulsified cosmetic (sunscreen cream)
(Ingredient) (%)
1. Hydrogenated lecithin 2
2. Concentrated glycerin 10
3. 1,3-butylene glycol 5
4). Ethyl hexyl methoxycinnamate 7
5. Polybutene (* 5) 3
6). Diglyceryl tetraisostearate 5
7). Diisostearyl malate 5
8). Squalane 8
9. Purified water remaining amount 10. Alkyl-modified carboxyvinyl polymer (* 8) 1
11. Triethanolamine appropriate amount 12. Sorbitol 1
(* 8) Pemulen TR-1 (manufactured by NOVEON)

(Production method)
A: Components (1) to (3) are uniformly mixed at room temperature and heated to 70 ° C.
B: Components (4) to (8) are heated to 70 ° C. and added to A to form a gel.
C: Components (9) to (11) are heated to 70 ° C., added to B and emulsified.
D: After cooling C to 40 ° C., component (12) was added to obtain a sunscreen cream.

The sunscreen cream of Example 4 was an oil-in-water emulsified cosmetic that imparts firmness to the skin, is excellent in the sustainability of the firmness, and is also excellent in no stickiness.

Example 5: Oil-in-water emulsified cosmetic (cream for eyes)
(Ingredient) (%)
1. Hydrogenated lecithin 2
2. N-stearoyl-N-methyltaurine sodium 0.5
3. Concentrated glycerin 10
4). Cetostearyl alcohol 1
5. Polybutene (* 5) 2
6). Diglyceryl triisostearate 3
7). Diisostearyl malate 2
8). Oleic acid cholesterol ester 0.1
9. Purified water remaining amount 10. Birch extract 0.1
11. Sandalwood extract 0.1
12 Carboxyvinyl polymer 1
13. Sodium hydroxide 0.35
14 Polyvinyl alcohol 4

(Production method)
A: Components (1) to (3) are uniformly mixed at room temperature and heated to 70 ° C.
B: Components (4) to (8) are heated to 70 ° C. and added to A to form a gel.
C: The component (9) is heated to 70 ° C., added to B and emulsified.
D: After cooling C to 40 degreeC, component (10)-(14) was added and the cream for eyes was obtained.

  The eye cream of Example 5 was excellent in firmness immediately after use, but did not give a sticky feeling, and was also excellent in sustainability of the firmness.

Example 6: Oil-in-water emulsified cosmetic (massage cream)
(Ingredient) (%)
1. Hydrogenated lecithin 2
2. Diglycerin 8
3. Dipentaerythritol fatty acid ester (* 9) 1
4). Hydrogenated polyisobutene (* 2) 3
5. Diglyceryl diisostearate 5
6). Diisostearyl malate 7
7). Liquid paraffin 10
8). Purified water remaining 9. Alkyl-modified carboxyvinyl polymer 1
10. (PEG-240 / decyltetradeces-20 / HDI)
Copolymer (* 10) 1
11. Triethanolamine adequate amount 12.1,3-butylene glycol 5
(* 9) Cosmall 168ARNV (Nisshin Oilio Co., Ltd.)
(* 10) Adecanol GT-700 (manufactured by ADEKA)

(Production method)
A: Components (1) to (2) are uniformly mixed at room temperature and heated to 70 ° C.
B: Components (3) to (7) are heated to 70 ° C. and added to A to form a gel.
C: The component (8) is heated to 70 ° C., added to B and emulsified.
D: After cooling C to 40 degreeC, component (9)-(12) was added and the massage cream was obtained.

The massage cream of Example 6 was an oil-in-water emulsified cosmetic that is excellent in firmness immediately after use but does not give a sticky feeling and also has excellent persistence.

Claims (5)

The following components (A) to (C);
(A) polybutene having a number average molecular weight of 1000 to 3000 or hydrogenated polyisobutene (B) diisostearyl malate (C) diglyceryl diisostearate or diglyceryl triisostearate , component (A) , (B), (C) is 20% by mass or more with respect to the total oil amount, and the content ratio (B) / (C) of the components (B), (C) is 0. 1 to 10 oil-in-water emulsified cosmetics. The oil-in-water emulsified cosmetic according to claim 1, wherein the content ratio (A) / (B) of the components (A) and (B) is 0.1 to 10. The oil-in-water emulsion cosmetic according to claim 1 or 2, wherein the content of the component (C) is 0.1 to 20%. Furthermore, component (D) hydrogenated phospholipid is contained, The oil-in-water type emulsified cosmetics of any one of Claims 1-3 characterized by the above-mentioned. The following components (A) to (C);
(A) Polybutene or hydrogenated polyisobutene having a number average molecular weight of 1000 to 3000
(B) Diisostearyl malate
(C) Diglyceryl monoisostearate
The total content of components (A), (B), and (C) is 20% by mass or more based on the total oil amount, and the content ratio of components (B) and (C) (B) / (C) is 0.1-10, The oil-in-water type emulsified cosmetic characterized by the above-mentioned.