JP6609437B2 - Oil-in-water emulsified composition - Google Patents

Description

  The present invention relates to an oil-in-water emulsion-type composition characterized by utilizing the self-assembling property of hydrophobically modified polyether urethane and having resilience, and more specifically, a higher alcohol and a specific content ratio at 25 ° C. The present invention relates to an oil-in-water emulsified composition that contains a liquid oil, has a restoring property, and is excellent in stability over time.

  In an oil-in-water emulsified composition, the ability to maintain stability in various temperature ranges as a dosage form is one of the important items required for continuous use of cosmetics produced by the composition. It is. At the same time, cosmetics are also required to have an effect typified by an excellent feeling of use for continuous use. As a component for maintaining stability, it is generally known to improve the viscosity of the whole dosage form by using a thickener, and to reduce creaming and coalescence of emulsified droplets due to the difference in specific gravity between water and oil. . Typical examples of the thickener include water-soluble polymers, and various water-soluble thickeners have been studied so far. For example, as the water-soluble thickener, polysaccharides, acrylic acid polymers, carboxyvinyl polymers, associative thickeners, clay minerals, and the like are appropriately selected depending on the purpose. Among the various associative thickeners selected, the hydrophobically modified polyether urethane is a thickener that gives a good texture (texture) and an excellent feeling on the skin and / or hair in addition to a good thickening power. Has been used as. In addition, taking advantage of its thickening properties and excellent usability characteristics, it is known to combine with other water-soluble thickeners to achieve stability in various temperature ranges and better usability. (See Patent Documents 1 and 2).

  On the other hand, in the case of an oil-in-water emulsion composition used in combination with an oil agent, the use of an associative thickener alone does not have a sufficient yield value, so other water-soluble materials such as xanthan gum, carbomer, and alkyl-modified carboxyvinyl polymer are not used. A method of giving a yield value in combination with a functional polymer (see Patent Document 1), a method of giving a yield value by using an acrylic acid polymer (see Patent Document 2) and cetyl alcohol (see Patent Documents 3 and 4) Discloses a stabilization method for preventing creaming.

JP 2006-62996 A JP 2007-291026 A JP 2000-239120 A Special table 2011-523630 gazette

However, in the techniques of Patent Documents 1 and 2, the oil-in-water emulsion type gel is stabilized by using carbomer, carboxyvinyl polymer, acrylic acid polymer, etc., but yielding by using these water-soluble polymers together. As the value increased, it was difficult to exhibit restorability, and a satisfactory feeling of use was not obtained due to the slimy feeling peculiar to water-soluble polymers. Further, in the techniques of Patent Documents 3 and 4, cetyl alcohol is used. However, since the strength of the gel to be formed is not sufficient, the stability over time is inferior, and the usability required due to the resilience cannot be expressed. Further, when the amount of higher alcohol is increased, the stability over time is improved, but the viscosity of the cosmetic is increased and the feeling of use may be impaired.
That is, in the oil-in-water emulsion compositions disclosed in these conventional techniques, emphasis is placed on considering the stability over time, and the property of restoring the thickener has not been fully utilized. Accordingly, an object of the present invention is to provide an oil-in-water emulsified composition that retains its resilience.

  In view of such circumstances, the present inventor has intensively studied to solve the above problems, and as a result, a hydrophobic saturated polyether urethane as an associative thickener and a linear saturated alcohol having 14 to 18 carbon atoms and It was found that the stability over time was improved by containing a linear saturated alcohol having 20 to 22 carbon atoms in combination at a specific ratio, and based on this finding, a specific amount of liquid oil was further contained. By using an oil-in-water emulsified type, the present invention, which is an oil-in-water emulsified composition having excellent usability and stability over time while having the recoverability of an associative thickener as the above-mentioned problem, has been completed. It was.

That is, the present invention includes the following components (a) to (d);
(A) The following general formula (1):
R ¹ -{(O-R ² ) _k -OCONH-R ³ [-NHCOO- (R ⁴ -O) _n -R ⁵ ] _h } _m (1)
[Wherein R ¹ , R ² and R ⁴ represent a hydrocarbon group which may be the same or different from each other, R ³ represents a hydrocarbon group which may have a urethane bond, and R ⁵ represents a straight chain. Represents a branched chain or a secondary hydrocarbon group, m is a number of 2 or more, h is a number of 1 or more, and k and n are independently numbers in the range of 0 to 1000. ]
(B) a linear saturated alcohol having 14 to 18 carbon atoms (c) a linear saturated alcohol having 20 to 22 carbon atoms (d) an oil agent that is liquid at 25 ° C. .5-9% by mass
The oil-in-water emulsion composition is characterized in that the content mass ratio (b) / (c) of the components (b) and (c) is in the range of 1 to 5.

  The oil-in-water emulsion composition, wherein the content mass ratio (a) / [(b) + (c)] of the component (a), the component (b), and the component (c) is in the range of 1 to 5. It provides things.

The component (d) is an oil-in-water emulsion composition characterized in that it is an oil having an ester bond.

The component (d) is an oil having two or more ester bonds, and provides an oil-in-water emulsion composition.

Furthermore, the present invention provides an oil-in-water emulsion composition comprising an acylmethyl taurine salt as component (e).

Furthermore, the said component (d) provides the oil-in-water emulsion type composition characterized by including the triglycerol derived from a C8-C22 fatty acid and glycerol.

A desired oil-in-water emulsion composition by containing a hydrophobically modified polyether urethane, a linear saturated alcohol having 14 to 18 and 20 to 22 carbon atoms in a specific ratio, and a liquid oil at 25 ° C. Things can be provided.

Hereinafter, the present invention will be specifically described with a focus on preferred embodiments. In the present specification, “to” means a range including numerical values before and after.

The (a) hydrophobically modified polyether urethane used in the present invention is an amphiphilic copolymer having a hydrophilic group as a skeleton and having a hydrophobic part at the end, and the hydrophobic parts of the copolymer are associated with each other in an aqueous medium to increase the viscosity. An associative thickener having an action (hereinafter, the hydrophobic modified polyether urethane of component (a) may be referred to as an associative thickener in the present specification). Component (a) is represented by the following general formula (1).

R ¹ -{(O-R ² ) _k -OCONH-R ³ [-NHCOO- (R ⁴ -O) _n -R ⁵ ] _h } _m (1)

In the above formula ^{(1), R 1, R} 2 and R ⁴ represents a hydrocarbon group which may be the same or different, R ³ represents a hydrocarbon group which may have a urethane bond, R ⁵ Represents a linear, branched or secondary hydrocarbon group, m is a number of 2 or more, h is a number of 1 or more, and k and n are independently numbers in the range of 0 to 1000. R ¹ , R ² and R ⁴ preferably have 2 to ⁴ carbon atoms, R ³ has 1 to 10 carbon atoms, and R ⁵ has 8 to 36 carbon atoms. M is preferably 2, h is preferably 1, and k is preferably 1 to 500, more preferably 100 to 300. N is preferably 1 to 200, and more preferably 10 to 100.

The hydrophobically modified polyether urethane represented by the general formula (1) is, for example, one or more polyether polyols represented by R ¹ -[(O—R ² ) _k —OH] _m , and R 1 or 2 or more types of polyisocyanate represented by ^3- (NCO) _{h + 1} , and 1 or 2 or more types of polyether monoalcohol represented by HO— (R ⁴ —O) _n —R ⁵ It can be obtained by reacting.

In this case, R ^{1 to} R ⁵ in the general formula (1) are R ¹ -[(O—R ² ) _k —OH] _m , R ³ — (NCO) _{h + 1} , HO— (R ⁴ —O) to be used. It is determined by the _n -R ^5. The charging ratio of the three members is not particularly limited, but the ratio of the hydroxyl group derived from polyether polyol and polyether monoalcohol to the isocyanate group derived from polyisocyanate is NCO / OH = 0.8: 1 to 1.4: 1. It is preferable that

  Among them, those having a structure in which both ends of polyethylene glycol are modified with decyltetradecyl alcohol and having an average weight molecular weight of about 50,000 (GPC method) are preferably used. Examples of such commercially available products of hydrophobically modified polyether urethane include “Adecanol GT-700” (manufactured by ADEKA Co., Ltd.), which is a PEG-240 / decyltetradeceth-20 / hexamethylene diisocyanate copolymer.

  The content of the component (a) in the present invention is not particularly limited, but is 0.1 to 5% by mass (hereinafter simply referred to as “%”), preferably 1 to 2%, and more preferably 1.2 to 1.8%. By setting it as content of this range, it can be made excellent as a peculiar use feeling as hydrophobically modified polyether urethane, and is preferable.

  The component (b) linear saturated alcohol having 14 to 18 carbon atoms used in the present invention functions as an emulsification aid in the oil-in-water emulsion composition of the present invention. Any linear saturated alcohol having 14 to 18 carbon atoms can be used. Specific examples include myristyl alcohol, hexadecyl alcohol, cetyl alcohol, cetostearyl alcohol, stearyl alcohol, and the like. One or more of these can be used. Among these, when either cetostearyl alcohol or stearyl alcohol is selected as the component (b), it is easy to obtain finer emulsion droplets, and an oil-in-water emulsion type composition having particularly good temporal stability can be obtained. ,preferable. More preferred is cetostearyl alcohol.

  The content of the component (b) in the oil-in-water emulsion composition of the present invention is not particularly limited as long as the object of the present invention is not impaired, but is 0.1 to 10%, preferably 0.2. It is more preferable to set it in a range of ˜5% and 0.2-2%.

  The component (c) linear saturated alcohol having 20 to 22 carbon atoms used in the present invention functions as an emulsification aid in the oil-in-water emulsion composition of the present invention. Any linear saturated alcohol having 20 to 22 carbon atoms can be used. Specific examples include arachidyl alcohol and behenyl alcohol, and one or more of these can be used. Among these, it is preferable to select behenyl alcohol as the component (c) because it is easy to obtain finer emulsified droplets and an oil-in-water emulsion type composition having particularly good temporal stability can be obtained.

  The content of the component (c) in the oil-in-water emulsion composition of the present invention is not particularly limited as long as the object of the present invention is not impaired, but is 0.01 to 10%, preferably 0.05. More preferably, it is in the range of -5%, and further 0.1-2%.

  The present invention is characterized in that the above components (b) and (c) are used in combination with two (or more) alcohols having different carbon numbers. When the content mass ratio (b) / (c) of such a component (b) and a component (c) is made into the range of 1-5, it will become the thing excellent in the stabilization effect of an oil-in-water emulsion type composition, and preferable. . Further, (b) / (c) is more preferably in the range of 2-5.

  Further, it is preferable that the component (a), the component (b), and the component (c) are contained at a specific ratio because an excellent thickening action is exhibited. Specifically, the component mass ratio (a) / [(b) + (c)] of the component (a), the component (b), and the component (c) is in the range of 1 to 5, and the component (b) And the linear saturated alcohol of the component (c) and the hydrophobic part of the two terminal sections of the component (a) hydrophobically modified polyether urethane are suitable, and the restorability of the oil-in-water emulsion composition Maintaining the above, the excellent usability is expressed. Furthermore, (a) / [(b) + (c)] is more preferably in the range of 2-5.

  The liquid agent at 25 ° C. of the component (d) used in the present invention contributes to the lubricant to the skin at the time of application as an oily component in the oil-in-water emulsion type composition and expresses an excellent feeling of use. It is contained as a purpose.

  Component (d) includes hydrocarbons, fats and oils, ester oils, fatty acids, silicone oils, fluorine-based oils, regardless of the origin of animal oils, vegetable oils, minerals, synthetic oils and the like commonly used in cosmetics. Lanolin derivatives, oil-soluble UV absorbers, and the like. Specifically, hydrocarbons such as liquid paraffin, squalane and α-olefin oligomer, oil and fat such as meadow foam oil, macadamia nut oil, jojoba oil, olive oil, triethylhexanoin, trimethylolpropane triisostearate, propylene dicaprate Glycol, diisostearyl malate, cetyl isooctanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, glyceryl trioctanoate, polyglyceryl diisostearate, diglyceryl triisostearate, dialkyl carbonate, neopentyl glycol dioctanoate, etc. Branched saturated or unsaturated fatty acids such as esters, isostearic acid and oleic acid, branched saturated organic acids such as oleyl alcohol and isostearyl alcohol Fluorine oils such as unsaturated higher alcohols, perfluoropolyethers, perfluorodecane, perfluorooctane, oil-soluble UV absorbers such as p-methoxycinnamic acid-2-ethylhexyl, low polymerization dimethyl Examples thereof include silicone oils such as polysiloxane, high degree of polymerization dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, and octamethylcyclotetrasiloxane.

  Among these, ester oils that are liquid at 25 ° C. can be more excellent in terms of usability. Specific examples of such ester oils include oil and fat such as meadow foam oil, macadamia nut oil, jojoba oil, olive oil, triethylhexanoin, trimethylolpropane triisostearate, propylene glycol dicaprate, diisostearyl malate, Cetyl isooctanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, glyceryl trioctanoate, polyglyceryl diisostearate, diglyceryl triisostearate, dialkyl carbonate, neopentyl glycol dioctanoate and the like (a) hydrophobic modified poly The interaction with the hydrophobic part of the two end sections of ether urethane is suitable, and it is excellent in terms of usability due to its resilience. Use one or more as necessary. It can be.

  Furthermore, among ester oils that are liquid at 25 ° C., ester oils containing two or more ester bonds are particularly preferred in the present invention from the viewpoint of thickening the component (a) and stability over time. Examples of such ester oils are: Meadowfoam oil, macadamia nut oil, olive oil, triethylhexanoin, trimethylolpropane triisostearate, propylene glycol dicaprate, diisostearyl malate, glyceryl trioctanoate, polyglyceryl diisostearate , Diglyceryl triisostearate, dialkyl carbonate, neopentyl glycol dioctanoate, etc., are suitable for interaction with the hydrophobic part of the two terminal sections of component (a) hydrophobically modified polyether urethane, and have a feeling of use due to resilience. It is excellent in the point and can use 1 type (s) or 2 or more types as needed.

  Furthermore, among ester oils that are liquid at 25 ° C., a triester of a fatty acid having 8 to 22 carbon atoms and glycerin is preferable because of its excellent moisturizing properties and moisturizing properties.

  In addition, the liquid in this invention refers to the viscosity value which exists in the range of 1-3000 mPa * s at 25 degreeC, and is a property which has sufficient fluidity | liquidity. Viscosity measurement here can be measured using a B-type rotational viscometer (Toshiba System Co., Ltd., Bismetron viscometer VDA2).

  The content of the component (d) in the oil-in-water emulsion composition of the present invention is not particularly limited as long as the object of the present invention is not impaired, and can be appropriately adjusted depending on the purpose and blending of other components. However, it is in the range of 0.5 to 9%. This range is preferable from the viewpoint of being an oil-in-water emulsion composition having excellent temporal stability in the present invention and having the restorability of the composition. More preferably, it is in the range of 1.0 to 5.0%. If it is in this range, the effect of the moisture retention and moisture retention of component (d) can be exhibited.

  The component (e) acylmethyl taurate used in the present invention is for dispersing and stabilizing oils and powders. The oil-in-water emulsion composition of the present invention functions as an emulsifier in addition to the component (a), and is not particularly limited. Specifically, the coconut oil fatty acid methyl taurine sodium, lauroyl methyl taurine Sodium, myristoyl methyl taurine sodium, palmitoyl methyl taurine sodium, stearoyl methyl taurine sodium and the like can be mentioned. Among these, palmitoylmethyl taurine sodium and stearoylmethyl taurine sodium are preferable in order to obtain better stability over time.

  The content of the component (e) in the oil-in-water emulsion composition of the present invention is not particularly limited as long as the object of the present invention is not impaired, and can be appropriately adjusted depending on the purpose and the blending of other components. However, it is preferably within a range of about 0.1 to 5%.

  The oil-in-water emulsion composition of the present invention can be adjusted in content and content ratio of component (a), component (b), and (c). In order that the usability resulting from the ether urethane can be exhibited particularly, the property is preferably a gel. Here, the “gel” is not a gel like a Newtonian fluid but is a non-Newtonian fluid based on the component (a). The yield value of the gel having such characteristics is not particularly limited, but from the viewpoint of usability, the yield value of the gel is preferably 100 Pa or more at 30 ° C. Here, the yield value of the gel can be measured with a stress-controlled rheometer disclosed in JP-A-2006-249001. Specifically, it refers to the share stress value at which the straight line drawn from the origin of the share rate and the share stress curve is deviated by measuring the share rate and the share stress curve.

  In the composition of the present invention, in addition to the above components, cosmetics, external preparations for skin, foods, inks, detergents, softeners for clothing, fragrance, Ingredients used in preparations such as deodorants and fabrics, that is, water (purified water, hot spring water, deep water, etc.), oil agents, surfactants, metal soaps, gelling agents, powders, alcohols, water-soluble Polymer, film-forming agent, resin, UV protection agent, inclusion compound, antibacterial agent, fragrance, deodorant, salt, pH adjuster, refresher, animal / microbe-derived extract, plant extract, blood circulation promoter, Astringents, antiseborrheic agents, whitening agents, anti-inflammatory agents, active oxygen scavengers, cell activators, humectants, chelating agents, keratolytic agents, enzymes, hormones, vitamins and the like can be added.

  There is no restriction | limiting in particular regarding the use of the composition of this invention, It uses as a composition for various uses, such as cosmetics, an external preparation for skin, foodstuffs, ink, detergent, the softening finishing agent for clothes, a fragrance | flavor, a deodorant, and a textile. be able to. It is preferable to use this invention as cosmetics or a skin external preparation from a viewpoint of the outstanding usability to skin.

  Examples of the cosmetics of the present invention are not particularly limited, for example, skin care cosmetics such as milky lotion, cream, cosmetic liquid, and pack, makeup makeup such as foundation, blusher, lipstick, eye color, mascara, eyeliner, and nail polish. It may be in any form such as a cosmetic, a hair nourishing agent, a hair tonic, a shampoo, a rinse, a hair cosmetic such as a hair wax, or a cleaning agent such as a facial cleanser.

  Examples of the external preparation for skin of the present invention are not particularly limited, and may be any form such as an external gel, cream, ointment, liquid, liniment, and haptic.

EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated further more concretely, the scope of the present invention is not limited to these.
Invention products 1-6, Reference products 7-8, Invention products 9-20, and Comparative products 1-4: Moisturizing cream (oil-in-water emulsion gel)
Creams were prepared according to the compositions shown in Tables 1 to 3 and the following production methods, and evaluated and judged according to the evaluation methods and criteria used, and the results are shown in Tables 1 to 3.

(Production method)
A: Components (2) to (8) and (10) are uniformly mixed at 70 ° C.
B: Components (1), (9) and (11) are uniformly mixed at 70 ° C.
C: A was added to B and emulsified to obtain a moisturizing cream (oil-in-water emulsion type gel).

<Restorability test evaluation>
In this example, the restoration test evaluation of the moisturizing cream (oil-in-water emulsified gel) was carried out by placing a sample in a circular resin container having a diameter of 8 cm so that the height was 4 cm, and starting from a state where the surface was flat in a horizontal state. The time required for restoration until it returns to the original flat state after pushing a circular plate with a diameter of 1 cm from the surface down to a depth of 2 cm and leaving a hole in a 5 ° C constant temperature bath. Evaluation was performed by measuring. The measurement was performed by visual measurement and evaluated according to a four-stage criterion described later.

Four-stage criteria for restoration test evaluation (judgment): Restoration test evaluation results ◎: Return to a flat state after 1 hour ○: Return to a flat state after 6 hours △: Flat state after 24 hours X: not returned to flat state

<Evaluation of stability over time>
In this example, the stability over time of the oil-in-water emulsified gel composition under high temperature conditions was measured by storing the sample in a constant temperature bath at 40 ° C. for a maximum of 3 months, returning it to a room temperature environment, and visually measuring it. Evaluation was performed according to the following four-stage criteria.

Four-stage criteria for evaluation of stability over time (determination): Results of visual evaluation of stability over time ◎: Stable even after 3 months ○: Stable after 1 month, but water-based layer after 3 months Confirmation △: An aqueous layer of less than 1 mm is confirmed at the bottom of the preparation at the end of 1 month. ×: An aqueous layer of 1 mm or more is confirmed at the bottom of the preparation at the end of the month. The aqueous layer observed here is , By creaming.

The oil-in-water emulsified gel compositions of the present invention products 1 to 6, the reference products 7 to 8, and the present invention products 9 to 20 are compared with the oil-in-water emulsified gel compositions of the comparative products 1 to 4, and the resilience test is performed. It was excellent in the time stability test.
On the other hand, in the comparative product 1 in which the value of the component (b) / component (c) is less than 1.0, the stabilizing effect of the component (c) is strongly expressed, and the preparation has a high yield value. It was inferior in restorability and satisfactory usability was not obtained. In Comparative product 2 having a component (b) / component (c) value of more than 5.0, the stabilization effect of component (c) is weak and the preparation does not have a sufficient yield value. It was inferior in stability and was not satisfactory. Moreover, in the comparative product 3 having more than 9% of the liquid oil at component (d) 25 ° C., the liquid oil was excessive, so the stability over time could not be ensured, and a satisfactory product could not be obtained. Moreover, in the comparative product 4 containing lauryl alcohol instead of the component (b), since the expression of the stabilizing effect is weak and the preparation does not have a sufficient yield value, a satisfactory product with poor stability over time is obtained. I couldn't.

  From the above examination results, oil-in-water emulsification is characterized in that if it is not the product of the present invention containing all of the components (a) to (d) of the present invention, it has regenerative properties and excellent stability over time. It has been shown that mold gel compositions cannot be provided.

Reference Example 2 Massage cream (oil-in-water emulsified cream)
(Ingredient) (%)
1. Cetostearyl alcohol 0.7
2. Behenyl alcohol 0.3
3. Glyceryl monostearate 0.4
4). Triethylhexanoin 3.0
5. Macadamia nut oil 0.5
6). Methyl paraoxybenzoate 0.1
7. Phenoxyethanol 0.1
8). (PEG-240 / decyltetradeces-20 / HDI)
Copolymer (Note 1) 1.5
9. Purified water residue 10. Ethanol 3.0
11. Astaxanthin-5C (Note 2) 0.01
12 Fragrance 0.05
(Note 2) Astaxanthin 1% solution (Oryza Oil Chemical Co., Ltd.)

(Production method)
A: Components (1) to (7) are uniformly mixed at 70 ° C.
B: Components (8) to (9) are uniformly mixed at 70 ° C.
C: A is added to B to emulsify, and cooled to room temperature.
D: (10) to (12) were added and mixed uniformly to obtain a massage cream (oil-in-water emulsion type cream).

The massage cream of Reference Example 2 (oil-in-water emulsified cream type) was an oil-in-water emulsified composition that was excellent in stability over time while having resilience. In addition, the moisturizing effect was excellent.

Reference Example 3 Liquid Foundation (oil-in-water cream)
(Ingredient) (%)
1.1,3 Butylene glycol 5.0
2. Hydrogenated soybean phospholipid 0.5
3. Titanium oxide 5.0
4). Bengala 0.1
5. Yellow iron oxide 1.0
6). Black iron oxide 0.05
7. (PEG-240 / decyltetradeces-20 / HDI)
Copolymer (Note 1) 1.5
8). Purified water residue 9. Glycerin 5.0
10. Ethyl paraoxybenzoate 0.1
11. Stearic acid 0.9
12 Glycerol monostearate 0.3
13. Cetostearyl alcohol 0.6
14 Behenyl alcohol 0.3
15. Monooleic acid POE (20 mol) sorbitan 0.2
16. Trioleic acid POE (20 mol) sorbitan 0.2
17. 2-Ethylhexyl paramethoxycinnamate 5.0
18. Isodecane 2.0
19. Tocophenol 0.01
20. Perfume 0.02

(Production method)
A: Disperse components (1) to (6).
B: Components (7) to (10) are mixed uniformly at 70 ° C.
C: Add B to A and mix uniformly at 70 ° C.
D: Components (11) to (18) are uniformly mixed at 70 ° C.
E: C is added to D, emulsified, and cooled to room temperature.
F: Components (19) to (20) were added to E to obtain an oil-in-water cream liquid foundation.

The gel cream of Reference Example 3 was an oil-in-water emulsified composition having resilience and excellent stability over time. In addition, the moisturizing effect was excellent.

Reference Example 4 Ointment (oil-in-water emulsified gel)
(Ingredient) (%)
1. Triethanolamine 2.0
2. Glycerin 5.0
3. Dipotassium glycyrrhizinate 0.5
4). (PEG-240 / decyltetradeces-20 / HDI)
Copolymer (Note 1) 2.0
5. Purified water remaining amount 6. Stearic acid 18.0
7. Cetanol 1.0
8). Behenyl alcohol 0.3
9. Triethylhexanoic acid trimethylolpropane 0.5
10. Dl-α-tocopherol acetate 0.2
11. Methyl paraoxybenzoate 0.1

(Production method)
A. Ingredients (1) to (5) are uniformly dissolved and kept at 75 ° C.
B. Ingredients (6) to (11) are heated and mixed and maintained at 75 ° C.
C. B was gradually added to A to obtain an ointment.

The ointment of Reference Example 4 was an oil-in-water emulsified composition having resilience and excellent stability over time. In addition, the moisturizing effect was excellent.

Reference Example 5 Oil-in-water sunscreen (component) (%)
1. Glycerin 1.0
2. DPG 9.0
3. (PEG-240 / decyltetradeces-20 / HDI)
Copolymer (Note 1) 1.5
4). 4. Purified water remaining amount PEG-5 phytosterol 0.5
6). PEG-30 phytosterol 0.5
7. Cetostearyl alcohol 0.8
8). Behenyl alcohol 0.5
9. Glyceryl monostearate 0.5
10. Ethyl hexyl methoxycinnamate 4.0
11. Diethylaminohydroxybenzoyl hexyl benzoate 1.0
12 Bizethylhexyloxyphenol Methoxyphenyltriazine 0.5
13. Triethylhexanoin 3.0
14 Acrylates / alkyl acrylate (C10-30)
Copolymer 0.1
15. Sodium hydroxide appropriate amount 16. Ethyl paraoxybenzoate 0.1
17. Ethanol 7.0
18. Purified water 5.0
19. Perfume 0.02

(Production method)
A: Components (1) to (4) are mixed at 80 ° C.
B: Components (5) to (13) are mixed at 80 ° C.
C: Add component (14) to A and swell.
D: Add component (15) to C and neutralize.
E: Add B to D, emulsify, and cool to room temperature.
F: Components (16) to (18) are mixed.
G: F and component (19) were added to E to obtain an oil-in-water sunscreen.

The oil-in-water sunscreen of Reference Example 5 was an oil-in-water emulsified composition excellent in stability over time while having resilience. In addition, the moisturizing effect was excellent.

Claims (5)

The following components (a) to (d);
(A) The following general formula (1):
R ¹ — {(O—R ² ) _k —OCONH—R ³ [—NHCOO— (R ⁴ —O) _n —R ⁵ ] _h } _m (1)
[Wherein R ¹ , R ² and R ⁴ represent a hydrocarbon group which may be the same or different from each other, R ³ represents a hydrocarbon group which may have a urethane bond, and R ⁵ represents a straight chain. Represents a branched chain or a secondary hydrocarbon group, m is a number of 2 or more, h is a number of 1 or more, and k and n are independently numbers in the range of 0 to 1000. ]
(B) a linear saturated alcohol having 14 to 18 carbon atoms (c) a linear saturated alcohol having 20 to 22 carbon atoms (d) an oil agent that is liquid at 25 ° C. .5-9% by mass
Containing
Component (b), Ri-containing weight ratio (b) / (c) is 1 to 5 ranging der of (c),
Components (a), component (b), component-containing weight ratio of (c) (a) / [ (b) + (c)] , wherein the range der Rukoto 5-6, oil-in-water emulsion Mold composition. Wherein component (d), characterized in that an oil having an ester bond, oil-emulsifying composition of claim 1. Wherein component (d), characterized in that an oil having an ester bond two or more oil-emulsifying composition of claim 2. Further, as the component (e), characterized in that it contains an acyl methyl taurate, oil emulsifying composition according to any one of claims 1-3. Moreover, it said components (d), characterized in that it comprises a triester of a fatty acid and glycerol having 8 to 22 carbon atoms, oil emulsifying composition according to any one of claims 1-4.