JP4064567B2 - Sunscreen cosmetics - Google Patents
Sunscreen cosmetics Download PDFInfo
- Publication number
- JP4064567B2 JP4064567B2 JP10988699A JP10988699A JP4064567B2 JP 4064567 B2 JP4064567 B2 JP 4064567B2 JP 10988699 A JP10988699 A JP 10988699A JP 10988699 A JP10988699 A JP 10988699A JP 4064567 B2 JP4064567 B2 JP 4064567B2
- Authority
- JP
- Japan
- Prior art keywords
- silica
- fine particle
- sunscreen
- powder
- titanium oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Cosmetics (AREA)
Description
【0001】
【発明の属する技術分野】
この発明は、紫外線防止効果が高く、かつ透明性が高い化粧料に関し、さらにはこれらに加えて感触の良好な日焼け止め化粧料に関するものである。
【0002】
【従来の技術】
通常、日焼け止め化粧料においては紫外線防止効果を得るため、紫外線防止剤が配合される。紫外線防止剤としては、酸化チタン、微粒子酸化チタン等無機粉体を挙げることが出来る。
【0003】
【発明が解決しようとする課題】
しかしながら、紫外線防止効果を高めるために多量の微粒子酸化チタンを配合すると、使用時の肌が青白く不自然であり、のびが重い等の欠点があった。
【0004】
この発明は、紫外線防止効果が高く、かつ透明性のある仕上がりが得られる日焼け止め化粧料を提供することを目的とし、さらには上記の目的に加えて、感触の良好な日焼け止め化粧料を提供するものである。
【0005】
【課題を解決するための手段】
この発明者は、鋭意研究の結果、シリカ・酸化セリウム複合粒子と微粒子酸化チタンとポリグリセリン脂肪酸エステルを配合することにより上記の課題を解決することを発見し、この発明を完成するに至った。
【0006】
これを具体的に説明すると、請求項1項の発明は、シリカ・酸化セリウム複合粒子と微粒子酸化チタンとポリグリセリン脂肪酸エステル、及びオクテニルコハク酸トウモロコシデンプンエステルアルミニウム粉末を含有し、上記シリカ・酸化セリウム複合粒子と微粒子酸化チタンの配合比率を2:1とする白浮きがない日焼け止め化粧料とした。
【0007】
【発明の実施の形態例】
以下、この発明の構成について詳述する。
この発明の(A)シリカ・酸化セリウム複合粒子は、酸化セリウムにシリカを表面処理したものや、母粉体にシリカ及び酸化セリウムを表面処理したもの等が挙げられるが、好ましくは、酸化セリウムにSiO2として5〜60重量%(以下、単に%と記す)の不定形シリカを複合化して得られる複合粒子である。
この複合粒子は、たとえば、液温を60°C以下、pHを5以上に保った水にセリウム塩溶液とアルカリ溶液を添加して生成する水酸化セリウムのスラリーを80°C以上に加熱し、pHを9以上に保ちながら、ケイ酸ナトリウム溶液と鉱酸溶液に添加して不定形シリカのスラリーを生成させ、水洗、濾過した後、乾燥または焼成する方法によって製造することが出来る。シリカ・酸化セリウム複合粒子の配合量は特に限定されないが、好ましくは1〜30%である。
【0008】
この発明の(B)微粒子酸化チタンは平均粒子径5〜500nmが好ましく、10〜100nmがより好ましい。配合量は0.1〜10%が好ましく、0.1〜7%がより好ましい。11%以上では肌への塗布時に白浮きがする、閉塞感がある等の欠点が出てくる。
【0009】
この発明の上記(A)、(B)の両成分の合計配合量は特に限定しないが、好ましくは化粧料中1〜50%である。また、両成分の配合割合は、任意であり、特に限定されないが、好ましくは、(A):(B)=10:1〜1:5である。
【0010】
またこの発明に用いられるポリグリセリン脂肪酸エステルは、グリセリンが2〜10個重合したものに、脂肪酸でエステル化したものである。
【0011】
この発明の日焼け止め化粧料において、上記必須成分に加えてさらに粉末を含有することにより、使用感が改善される。
用いられる粉末としては、無水ケイ酸、ポリエチレン粉末、ポリメタクリル酸メチル粉末、ポリアミド樹脂粉末(ナイロン粉末)、セルロース粉末などの有機粉末等が挙げられる。特に使用性の観点から好適な粉末はオクテニルコハク酸トウモロコシデンプンエステルアルミニウムである。これらの粉末は滑り性の良いものである。
【0012】
この発明の日焼け止め化粧料において、上記の他に微粒子酸化亜鉛等の紫外線防止剤を配合することが出来る。また、上述した各粉体においては、表面活性を抑え、分散性を上げるために、酸化アルミニウム、酸化ケイ素等の無機物、金属石鹸、シリコーン等の1種または2種以上を用いて、表面処理を行っても良い。
【0013】
【実施例】
次に実施例を上げてこの発明について説明する。但し、この発明はこれによって限定されるものではない。
実施例1〜7、および比較例1〜8
表1及び表2に示す組成の日焼け止め化粧料を製造し、紫外線防止効果、化粧膜の透明感、使用性について評価した。
【0014】
紫外線防止効果
紫外線防止効果の測定は、米国食品医薬局(FDA)によって規定されたSPF値算出方法に準じて行った。SPF値が高いほど紫外線効果が優れている。
【0015】
化粧膜の透明感
女子被験者(25〜40歳)20人にこの発明の日焼け止め化粧料、及び比較例の日焼け止め化粧料を使用させて、化粧膜の白さについて5段階で評価した。評価項目は白浮きの有無:白浮きが全くない(評価4)、白浮きがほとんど目立たない(評価3)、白浮きが多少見られる(評価2)、白浮きがやや目立つ(評価1)、白浮きがはっきり目立つ(評価0)とし、さらにそれを平均して下記基準により判定した。
【0016】
評価基準
◎:平均点 4.5点以上
○:平均点 3.5点以上4.5未満
△:平均点 2.5点以上3.5未満
×:平均点 2.5点未満
【0017】
使用性
女子被験者(25〜40歳)20人にこの発明の日焼け止め化粧料、及び比較例の日焼け止め化粧料を使用させて、使用感を官能評価し、以下の評価基準に準じて判定した。
【0018】
評価基準
◎:20人中、16名以上が良好と評価した。
○:20人中、12名以上が良好と評価した。
△:20人中、8名以上が良好と評価した。
×:20人中、7名以下が良好と評価した。
【0019】
【表1】
【0020】
【表2】
【0021】
上記比較例1、2、3、5、6は透明性は高くて良いが、SPF値が低いか、又は使用性が悪い。また比較例4、7、8はSPF値、透明性、使用性ともに悪い。これに比べて、実施例1〜7に示すものは、SPF値も高く、透明性に優れ、使用性も良いことが示された。
【0022】
実施例8
この発明を油中水型サンスクリーン乳液とした実施例である。
【0023】
上記実施例8の製法
A:成分6〜7を均一に混合する。
B:成分1〜5をA成分に添加して混合する。
C:成分8〜10を均一に混合し、これをB成分に添加して乳化混合して乳液を得る。
この実施例のものは、SPF値は20であり、紫外線効果が高い。また、透明性が高く、使用感も良好である。
【0024】
実施例9
この発明を油中水型サンスクリーンクリームとした実施例である。
【0025】
上記実施例9の製法
A:成分6〜8を80°Cに加熱し、均一に混合する。
B:成分1〜5をA成分に添加して混合する。
C:成分9〜11を80°Cに加熱し、均一に混合した後、これをB成分に添加して乳化混合して室温まで冷却する。
この実施例のものは、SPF値は30であり、紫外線防止効果は高い。また、透明性が高く、使用感も良好である。
【0026】
【発明の効果】
この発明の日焼け止め化粧料は、シリカ・酸化セリウム複合粒子と微粒子酸化チタンとポリグリセリン脂肪酸エステル、及びオクテニルコハク酸トウモロコシデンプンエステルアルミニウム粉末を含有し、特に、上記シリカ・酸化セリウム複合粒子と微粒子酸化チタンの配合比率を2:1としたので、紫外線防止効果に優れているとともに、化粧膜の透明感を有し、いわゆる、白浮きがない日焼け止めである。また、オクテニルコハク酸トウモロコシデンプンエステルアルミニウム粉末を加えたので、さらに、優れた使用感を得ることが出来るものである。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cosmetic material having a high ultraviolet ray preventing effect and high transparency, and further relates to a sunscreen cosmetic material having a good touch in addition to these.
[0002]
[Prior art]
Usually, in sunscreen cosmetics, in order to obtain an ultraviolet ray preventing effect, an ultraviolet ray preventing agent is blended. Examples of the ultraviolet ray inhibitor include inorganic powders such as titanium oxide and fine particle titanium oxide.
[0003]
[Problems to be solved by the invention]
However, when a large amount of fine particle titanium oxide is blended in order to enhance the effect of preventing ultraviolet rays, the skin during use is pale and unnatural, and there are disadvantages such as heavy spread.
[0004]
An object of the present invention is to provide a sunscreen cosmetic that has a high UV protection effect and provides a transparent finish. In addition to the above-mentioned objects, the present invention also provides a sunscreen cosmetic with a good feel. To do.
[0005]
[Means for Solving the Problems]
As a result of diligent research, the inventor has found that the above problems can be solved by blending silica / cerium oxide composite particles, fine particle titanium oxide and polyglycerin fatty acid ester, and has completed the present invention.
[0006]
More specifically, the invention of claim 1 includes silica / cerium oxide composite particles, fine particle titanium oxide, polyglycerin fatty acid ester, and octenyl succinic acid corn starch ester aluminum powder, and the silica / cerium oxide composite. A sunscreen cosmetic with no white float was prepared with a mixing ratio of particles and fine particle titanium oxide of 2: 1 .
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail.
Examples of (A) silica / cerium oxide composite particles of the present invention include those obtained by surface-treating silica to cerium oxide, and those obtained by surface-treating silica and cerium oxide to a mother powder, preferably cerium oxide. as SiO 2 5 to 60 wt% (hereinafter simply% as referred) is a composite particle obtained by the amorphous silica complexed.
For example, the composite particles are prepared by heating a slurry of cerium hydroxide produced by adding a cerium salt solution and an alkali solution to water maintained at a liquid temperature of 60 ° C. or lower and a pH of 5 or higher to 80 ° C. or higher. While maintaining the pH at 9 or more, it can be produced by a method in which it is added to a sodium silicate solution and a mineral acid solution to form a slurry of amorphous silica, washed with water, filtered, and dried or calcined. The blending amount of the silica / cerium oxide composite particles is not particularly limited, but is preferably 1 to 30%.
[0008]
The fine particle titanium oxide (B) of this invention preferably has an average particle size of 5 to 500 nm, more preferably 10 to 100 nm. The blending amount is preferably 0.1 to 10%, more preferably 0.1 to 7%. If it is 11% or more, defects such as white floating when applied to the skin and a feeling of occlusion appear.
[0009]
Although the total blending amount of both components (A) and (B) of the present invention is not particularly limited, it is preferably 1 to 50% in the cosmetic. Moreover, the mixture ratio of both components is arbitrary and is not specifically limited, However, Preferably it is (A) :( B) = 10: 1 to 1: 5.
[0010]
Moreover, the polyglycerol fatty acid ester used for this invention is esterified with a fatty acid to one obtained by polymerizing 2 to 10 glycerol.
[0011]
In the sunscreen cosmetic of the present invention, the feeling of use is improved by further containing a powder in addition to the essential components.
Examples of the powder used include silicic anhydride, polyethylene powder, polymethyl methacrylate powder, polyamide resin powder (nylon powder), and organic powder such as cellulose powder. A particularly preferred powder from the viewpoint of usability is octenyl succinic acid corn starch ester aluminum. These powders have good sliding properties.
[0012]
In addition to the above, the sunscreen cosmetics of the present invention can contain an ultraviolet light inhibitor such as fine particle zinc oxide. Moreover, in each powder mentioned above, in order to suppress surface activity and to improve dispersibility, surface treatment is performed using one or more of inorganic substances such as aluminum oxide and silicon oxide, metal soap, and silicone. You can go.
[0013]
【Example】
Next, the present invention will be described with reference to examples. However, the present invention is not limited thereby.
Examples 1-7 and Comparative Examples 1-8
Sunscreen cosmetics having the compositions shown in Tables 1 and 2 were produced and evaluated for the effect of preventing ultraviolet rays, the transparency of the decorative film, and the usability.
[0014]
Ultraviolet ray prevention effect The measurement of the ultraviolet ray prevention effect was performed according to the SPF value calculation method defined by the US Food and Drug Administration (FDA). The higher the SPF value, the better the ultraviolet effect.
[0015]
20 female subjects (25 to 40 years old) with a transparent cosmetic film used the sunscreen cosmetic of the present invention and the comparative sunscreen cosmetic, and evaluated the whiteness of the cosmetic film in five stages. The evaluation items are the presence or absence of white float: no white float (Evaluation 4), white float is hardly noticeable (Evaluation 3), some white float is seen (Evaluation 2), white float is slightly noticeable (Evaluation 1), The white float was clearly conspicuous (evaluation 0), and further averaged and judged according to the following criteria.
[0016]
Evaluation criteria ◎: Average point 4.5 points or more ○: Average point 3.5 points or more and less than 4.5 △: Average point 2.5 points or more and less than 3.5 ×: Average point less than 2.5 points
Usability female subjects (25 to 40 years old) were allowed to use the sunscreen cosmetics of the present invention and the sunscreen cosmetics of the comparative examples, and the feeling of use was sensory-evaluated and determined according to the following evaluation criteria. .
[0018]
Evaluation Criteria A: 16 out of 20 people evaluated it as good.
○: Among 20 people, 12 or more evaluated as good.
(Triangle | delta): Eight or more persons evaluated it as favorable among 20 people.
×: Out of 20 people, 7 or less evaluated as good.
[0019]
[Table 1]
[0020]
[Table 2]
[0021]
In Comparative Examples 1, 2, 3, 5, and 6, the transparency may be high, but the SPF value is low or the usability is poor. Comparative Examples 4, 7, and 8 are poor in SPF value, transparency, and usability. Compared to this, it was shown that the examples shown in Examples 1 to 7 have high SPF values, excellent transparency, and good usability.
[0022]
Example 8
It is the Example which made this invention the water-in-oil type sunscreen emulsion.
[0023]
Production method A of Example 8: Components 6 to 7 are mixed uniformly.
B: Components 1 to 5 are added to component A and mixed.
C: Components 8 to 10 are mixed uniformly, added to component B and emulsified and mixed to obtain an emulsion.
In this embodiment, the SPF value is 20, and the ultraviolet ray effect is high. Moreover, transparency is high and a usability | use_condition is also favorable.
[0024]
Example 9
It is an Example which made this invention the water-in-oil type sunscreen cream.
[0025]
Production method A of Example 9: Components 6 to 8 are heated to 80 ° C. and mixed uniformly.
B: Components 1 to 5 are added to component A and mixed.
C: Components 9 to 11 are heated to 80 ° C. and mixed uniformly, then added to Component B, emulsified and mixed, and cooled to room temperature.
In this embodiment, the SPF value is 30, and the effect of preventing ultraviolet rays is high. Moreover, transparency is high and a usability | use_condition is also favorable.
[0026]
【The invention's effect】
The sunscreen cosmetic of the present invention contains silica / cerium oxide composite particles, fine particle titanium oxide, polyglycerin fatty acid ester, and octenyl succinic acid corn starch ester aluminum powder, in particular, the silica / cerium oxide composite particles and fine particle titanium oxide. The blending ratio of 2: 1 is excellent in the effect of preventing ultraviolet rays, has a transparent feeling of a decorative film, and is a so-called sunscreen with no whitening. Moreover, since the octenyl succinic acid corn starch ester aluminum powder was added , the outstanding usability | use_condition can be acquired further.
Claims (1)
上記シリカ・酸化セリウム複合粒子と微粒子酸化チタンの配合比率を2:1とすることを特徴とする、白浮きがない日焼け止め化粧料。Contains silica / cerium oxide composite particles, fine particle titanium oxide, polyglycerin fatty acid ester, and octenyl succinic acid corn starch ester aluminum powder,
A sunscreen cosmetic that does not cause whitening , wherein the mixing ratio of the silica / cerium oxide composite particles and the fine particle titanium oxide is 2: 1 .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10988699A JP4064567B2 (en) | 1999-03-13 | 1999-03-13 | Sunscreen cosmetics |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP10988699A JP4064567B2 (en) | 1999-03-13 | 1999-03-13 | Sunscreen cosmetics |
Publications (2)
Publication Number | Publication Date |
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JP2000256157A JP2000256157A (en) | 2000-09-19 |
JP4064567B2 true JP4064567B2 (en) | 2008-03-19 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP10988699A Expired - Fee Related JP4064567B2 (en) | 1999-03-13 | 1999-03-13 | Sunscreen cosmetics |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101655677B (en) * | 2008-08-20 | 2014-10-29 | 三星电子株式会社 | Medium path converting unit, and image forming apparatus including the same |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002179549A (en) * | 2000-12-12 | 2002-06-26 | Kishohin Kagaku Kaiho Kenkyusho:Kk | Skin care preparation |
JP4920830B2 (en) * | 2001-05-14 | 2012-04-18 | 株式会社コーセー | Water-in-oil cosmetics |
US20220249351A1 (en) * | 2019-06-06 | 2022-08-11 | Noevir Co., Ltd. | Cosmetic |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3267508B2 (en) * | 1995-08-10 | 2002-03-18 | 日本電工株式会社 | Silica / cerium oxide composite particles, method for producing the same, resin composition containing the same, and cosmetics |
JPH09194341A (en) * | 1996-01-19 | 1997-07-29 | Kanebo Ltd | Aerosol composition |
JPH107521A (en) * | 1996-06-21 | 1998-01-13 | Nikko Kemikaruzu Kk | Emulsified cosmetic |
JPH10182396A (en) * | 1996-12-26 | 1998-07-07 | Kose Corp | Cosmetic |
JPH10182395A (en) * | 1996-12-26 | 1998-07-07 | Kose Corp | Cosmetic |
JP3555001B2 (en) * | 1996-12-27 | 2004-08-18 | 株式会社コーセー | Cosmetics |
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1999
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101655677B (en) * | 2008-08-20 | 2014-10-29 | 三星电子株式会社 | Medium path converting unit, and image forming apparatus including the same |
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