JP2000290156A - Dispersed material of ultraviolet light shielding ultrafine particle - Google Patents
Dispersed material of ultraviolet light shielding ultrafine particleInfo
- Publication number
- JP2000290156A JP2000290156A JP9948099A JP9948099A JP2000290156A JP 2000290156 A JP2000290156 A JP 2000290156A JP 9948099 A JP9948099 A JP 9948099A JP 9948099 A JP9948099 A JP 9948099A JP 2000290156 A JP2000290156 A JP 2000290156A
- Authority
- JP
- Japan
- Prior art keywords
- ultraviolet
- ultrafine particles
- dispersion
- ultrafine particle
- shielding ultrafine
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、シリコーンで被覆
処理された一次粒径０．１μｍ以下の紫外線遮蔽性超微
粒子の分散体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispersion of ultraviolet shielding ultrafine particles having a primary particle size of 0.1 .mu.m or less coated with silicone.
【０００２】[0002]
【従来の技術】金属酸化物粉末を粒径０．１μｍ以下の
超微粒子にすることにより、新たな機能が付与されるこ
とが見出され、様々な分野において利用されている。例
えば、紫外線吸収能をもつ酸化亜鉛や酸化チタン等を粒
径０．１μｍ以下の超微粒子にすると、可視光の散乱が
抑えられるため、これを化粧料に配合した場合、透明で
白浮きしない自然な仕上がりの化粧料を提供することが
できる。2. Description of the Related Art It has been found that a new function is imparted by making metal oxide powder into ultrafine particles having a particle diameter of 0.1 μm or less, and it is used in various fields. For example, when ultrafine particles having a particle size of 0.1 μm or less are made of zinc oxide, titanium oxide, or the like having an ultraviolet absorbing ability, scattering of visible light can be suppressed. Thus, it is possible to provide a cosmetic having a good finish.
【０００３】しかし、このような粒径０．１μｍ以下の
超微粒子は、その表面エネルギーの大きさのために容易
に凝集するため、これをそのまま使用した場合、金属酸
化物粉末の実際の分散状態はそれほど細かくなく、超微
粒子の利用効果が十分に発揮されないといった問題があ
った。However, such ultrafine particles having a particle size of 0.1 μm or less easily aggregate due to the surface energy thereof. Is not so fine, and there is a problem that the effect of using ultrafine particles is not sufficiently exhibited.
【０００４】上記の問題を解決するために、特開平6-23
9728号公報では、粒径０．１μｍ以下の超微粒子状金属
酸化物を用いた化粧料原料が開示されている。この化粧
料原料は、分散粒径０．１μｍ以下の超微粒子を分散体
中に１０重量％以上含むものであり、超微粒子のもつ機
能を発揮することが可能となっている。しかしながら、
０．１μｍ以下の紫外線遮蔽性超微粒子をそのままシリ
コーン油に分散させた場合、その分散安定性が非常に悪
く、経時的に粒子が再凝集を起こすため、超微粒子の機
能が十分に発揮されなくなるといった新たな問題が生じ
ている。In order to solve the above problem, Japanese Patent Laid-Open Publication No.
No. 9728 discloses a cosmetic raw material using an ultrafine metal oxide having a particle size of 0.1 μm or less. This cosmetic raw material contains 10% by weight or more of ultrafine particles having a dispersed particle size of 0.1 μm or less in the dispersion, and can exhibit the function of the ultrafine particles. However,
When ultra-violet shielding ultrafine particles of 0.1 μm or less are directly dispersed in silicone oil, the dispersion stability is very poor, and the particles re-aggregate over time, so that the function of the ultra-fine particles is not sufficiently exhibited. A new problem has arisen.
【０００５】[0005]
【発明が解決しようとする課題】従って、本発明は、分
散安定性に優れた紫外線遮蔽性超微粒子分散体を提供す
ることを目的とする。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an ultraviolet shielding ultrafine particle dispersion having excellent dispersion stability.
【０００６】[0006]
【課題を解決するための手段】即ち、本発明は、一次粒
径０．１μｍ以下の紫外線遮蔽性超微粒子、シリコーン
油及び分散剤を含有してなる紫外線遮蔽性超微粒子分散
体であって、該紫外線遮蔽性超微粒子の表面が、０．５
ｍｇ／ｍ2 以上のシリコーンで被覆されてなる紫外線遮
蔽性超微粒子分散体に関するものである。以下、「分散
体」とは紫外線遮蔽性超微粒子分散体を意味し、「超微
粒子」とは紫外線遮蔽性超微粒子を意味する。That is, the present invention relates to an ultraviolet-shielding ultrafine particle dispersion comprising a primary particle size of 0.1 μm or less, an ultraviolet-shielding ultrafine particle, a silicone oil and a dispersant, The surface of the ultraviolet shielding ultrafine particles is 0.5
The present invention relates to a UV-shielding ultrafine particle dispersion coated with silicone of not less than mg / m 2 . Hereinafter, “dispersion” means an ultraviolet shielding ultrafine particle dispersion, and “ultrafine particle” means ultraviolet shielding ultrafine particles.
【０００７】[0007]
【発明の実施の形態】本発明に用いる紫外線遮蔽性超微
粒子としては、酸化亜鉛超微粒子、酸化チタン超微粒子
等を用いることができる。かかる超微粒子の粒径として
は、超微粒子としての特性を発揮させる点から、一次粒
径が０．１μｍ以下のものが好ましく、０．００１〜
０．０７μｍのものがより好ましく、０．００５〜０．
０４μｍのものが特に好ましい。UV-A〜UV-B領域におい
て紫外線吸収作用を付与することを目的として用いる場
合は、各々の金属酸化物で吸収波長が異なるため、上記
紫外線遮蔽性超微粒子を混合して用いることが好まし
い。BEST MODE FOR CARRYING OUT THE INVENTION As the ultraviolet shielding ultrafine particles used in the present invention, zinc oxide ultrafine particles, titanium oxide ultrafine particles and the like can be used. The particle size of the ultrafine particles is preferably from 0.1 to 0.1 μm from the viewpoint of exhibiting the characteristics as ultrafine particles,
It is more preferably 0.07 μm, and 0.005 to 0.5 μm.
Those having a thickness of 04 μm are particularly preferred. When used for the purpose of imparting an ultraviolet absorbing effect in the UV-A and UV-B regions, it is preferable to use a mixture of the above-mentioned ultraviolet shielding ultrafine particles, since each metal oxide has a different absorption wavelength.
【０００８】本発明においては、紫外線遮蔽性超微粒子
の表面をシリコーンで被覆処理する。これにより超微粒
子のシリコーン油へのなじみが良くなり、また分散安定
性が著しく向上する。シリコーン被覆量は、シリコーン
の被覆効果を充分に発揮させる点から、超微粒子の表面
積１ｍ2 あたり０．５ｍｇ以上であり、１．０ｍｇ／ｍ
2 以上がより好ましい。ここで、超微粒子の表面積はBE
T 法により求めた比表面積をもとに計算した値である。In the present invention, the surface of the ultraviolet shielding ultrafine particles is coated with silicone. As a result, the penetration of the ultrafine particles into the silicone oil is improved, and the dispersion stability is significantly improved. The silicone coating amount is 0.5 mg or more per 1 m 2 of the surface area of the ultrafine particles and 1.0 mg / m 2 from the viewpoint of sufficiently exerting the silicone coating effect.
Two or more are more preferable. Here, the surface area of the ultrafine particles is BE
This is a value calculated based on the specific surface area obtained by the T method.
【０００９】被覆に用いるシリコーンは、化粧料原料基
準等の化粧料に関する原料基準に適合するものであれば
特に制限はないが、より高い分散安定性を得るために
は、メチルハイドロジェンポリシロキサン、ジメチルポ
リシロキサン、これらの混合物、並びに次の式：The silicone used for coating is not particularly limited as long as it conforms to the raw material standards for cosmetics, such as those for cosmetic raw materials, but in order to obtain higher dispersion stability, methylhydrogenpolysiloxane, Dimethylpolysiloxane, mixtures thereof, and the formula:
【００１０】[0010]
【化１】 Embedded image
【００１１】（式中、ｍ及びｎは、ｍ：ｎ＝０．５〜
２：１（モル比）で、かつｍ＋ｎ＝２０〜６０を満たす
数である。）で表されるメチルハイドロジェンシロキサ
ンとジメチルシロキサンとの共重合体を用いることが好
ましい。(Where m and n are m: n = 0.5 to
2: 1 (molar ratio) and m + n = 20 to 60. It is preferable to use a copolymer of methyl hydrogen siloxane and dimethyl siloxane represented by the formula (1).
【００１２】紫外線遮蔽性超微粒子にシリコーン被覆層
を形成させる方法には、例えば、酸化亜鉛超微粒子、酸
化チタン超微粒子等をシリコーン含有溶媒に分散させ、
続いて溶媒を除去し、その後、加熱処理により脱水素反
応を行う方法等が挙げられる。The method of forming the silicone coating layer on the ultraviolet shielding ultrafine particles includes, for example, dispersing zinc oxide ultrafine particles, titanium oxide ultrafine particles, etc. in a silicone-containing solvent,
Subsequently, a method of removing the solvent, and then performing a dehydrogenation reaction by heat treatment, or the like can be given.
【００１３】分散体中の紫外線遮蔽性超微粒子の含有量
は１０〜３０重量％が好ましく、２０〜２８重量％がよ
り好ましく、２５〜２８重量％が特に好ましい。１０重
量％未満では、分散体の添加量が多くなり、使用系にお
ける配合の自由度が低下する傾向がある。超微粒子の分
散性を確保する点から３０重量％以下が好ましい。The content of the ultraviolet shielding ultrafine particles in the dispersion is preferably 10 to 30% by weight, more preferably 20 to 28% by weight, and particularly preferably 25 to 28% by weight. If it is less than 10% by weight, the amount of the dispersion added tends to be large, and the degree of freedom of blending in the used system tends to decrease. From the viewpoint of ensuring the dispersibility of the ultrafine particles, the content is preferably 30% by weight or less.
【００１４】シリコーン油は分散媒体として使用する。
シリコーン油としては、化粧料原料基準等の化粧料に関
する原料基準に適合するものであれば、特に制限はな
く、揮発性又は不揮発性シリコーン油が使用できる。例
えばオクタメチルポリシロキサン、テトラデカメチルポ
リシロキサン、メチルポリシロキサン、高重合メチルポ
リシロキサン、メチルフェニルポリシロキサン、オクタ
メチルシクロテトラシロキサン、デカメチルシクロペン
タシロキサン等のほか、トリメチルシロキシケイ酸、次
の式（１）及び／又は式（２）：[0014] Silicone oil is used as a dispersion medium.
The silicone oil is not particularly limited as long as it conforms to the cosmetic raw material standards such as the cosmetic raw material standard, and volatile or nonvolatile silicone oil can be used. For example, octamethylpolysiloxane, tetradecamethylpolysiloxane, methylpolysiloxane, highly polymerized methylpolysiloxane, methylphenylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, etc., trimethylsiloxysilicic acid, the following formula (1) and / or formula (2):
【００１５】[0015]
【化２】 Embedded image
【００１６】（式中、Ｒ1 及びＲ2 はそれぞれ炭素数１
〜４のアルキル基を示し、Ｒ3 は炭素数１〜４０の直
鎖、分岐鎖又は環状のアルキル基、アルケニル基又はフ
ルオロアルキル基を示し、Ｒ4 は炭素数７〜４０の直
鎖、分岐鎖又は環状のアルキル基、アルケニル基又はフ
ルオロアルキル基を示し、ｅは２以上の数であり、ｆは
３以上の数であり、ｅ＋ｆ＝２〜６０００となる数を示
す。）で表される単位を有するオルガノポリシロキサン
等を挙げることができる。なかでもオクタメチルシクロ
テトラシロキサン及びデカメチルシクロペンタシロキサ
ンが好ましい。尚、前記に挙げたシリコーン油を混合し
て使用することができる。分散体中のシリコーン油の含
有量は、超微粒子の分散性の観点から１０〜７０重量％
が好ましく、１５〜６０重量％がより好ましく、２０〜
５０重量％が特に好ましい。(Wherein R 1 and R 2 each have 1 carbon atom)
And R 3 represents a linear, branched or cyclic alkyl group, alkenyl group or fluoroalkyl group having 1 to 40 carbon atoms, and R 4 represents a linear or branched alkyl group having 7 to 40 carbon atoms. It represents a chain or cyclic alkyl group, alkenyl group or fluoroalkyl group, e is a number of 2 or more, f is a number of 3 or more, and e + f = 2 to 6000. And the like. Of these, octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane are preferred. In addition, the above-mentioned silicone oils can be mixed and used. The content of the silicone oil in the dispersion is 10 to 70% by weight from the viewpoint of the dispersibility of the ultrafine particles.
Is preferably 15 to 60% by weight, more preferably 20 to 60% by weight.
50% by weight is particularly preferred.
【００１７】分散剤としては、化粧料原料基準等の化粧
料に関する原料基準に適合するものであれば、特に制限
はないが、シリコーン油中における分散効果の点で、シ
リコーン系分散剤が好ましく、例えば、変性シリコーン
及び反応性シリコーンからなる群より選ばれる一種以上
のシリコーン化合物を用いることができる。中でも、オ
キサゾリン変性シリコーン、アミノ変性シリコーン、ポ
リエーテル変性シリコーンが分散効果の高いものとして
好ましく、オキサゾリン変性シリコーンが特に好まし
い。分散体中の分散剤の含有量は、超微粒子の分散性の
観点から１〜２０重量％が好ましく、１．５〜１０重量
％がより好ましく、２〜７重量％が特に好ましい。The dispersant is not particularly limited as long as it conforms to the raw material standards for cosmetics such as the standard for cosmetic raw materials. However, from the viewpoint of the dispersing effect in silicone oil, silicone-based dispersants are preferred. For example, one or more silicone compounds selected from the group consisting of modified silicones and reactive silicones can be used. Among them, oxazoline-modified silicone, amino-modified silicone and polyether-modified silicone are preferable as those having a high dispersing effect, and oxazoline-modified silicone is particularly preferable. The content of the dispersant in the dispersion is preferably 1 to 20% by weight, more preferably 1.5 to 10% by weight, and particularly preferably 2 to 7% by weight from the viewpoint of the dispersibility of the ultrafine particles.
【００１８】また、本発明の分散体としては、分散媒体
であるシリコーン油と相溶性があり、かつ分散剤の良溶
媒である極性溶媒としてのエタノールを含有するもの
が、超微粒子の分散性の向上により優れていることから
好ましい。これは、分散体にエタノールを添加すること
により、分散剤の超微粒子表面への吸着状態をコントロ
ールすることができることによるものと考えられる。分
散体中でのエタノールの含有量は１０重量％以上が好ま
しく、２０〜５０重量％がより好ましく、２５〜４５重
量％が特に好ましい。エタノールの添加効果を発揮させ
る点から１０重量％以上が好ましく、分散安定性の観点
から５０重量％以下が好ましい。[0018] The dispersion of the present invention is a dispersion which is compatible with silicone oil as a dispersion medium and contains ethanol as a polar solvent which is a good solvent for the dispersant. It is preferable because it is more excellent in improvement. This is considered to be because the state of adsorption of the dispersant on the surface of the ultrafine particles can be controlled by adding ethanol to the dispersion. The content of ethanol in the dispersion is preferably 10% by weight or more, more preferably 20 to 50% by weight, and particularly preferably 25 to 45% by weight. It is preferably at least 10% by weight from the viewpoint of exerting the effect of adding ethanol, and preferably at most 50% by weight from the viewpoint of dispersion stability.
【００１９】本発明の分散体は、上記のようなシリコー
ンで被覆した紫外線遮蔽性超微粒子、シリコーン油、分
散剤、さらに所望によりエタノールを混合し、サンドミ
ルで分散処理することによって効率良く製造することが
できる。サンドミルは、ガラスビーズ等による分散媒体
の流動及び衝突による剪断力が分散力となっているが、
凝集粒子の分散には剪断力が最も効率的である。The dispersion of the present invention can be produced efficiently by mixing the above-mentioned ultraviolet-shielding ultrafine particles coated with silicone, silicone oil, a dispersant and, if desired, ethanol and subjecting the mixture to a sand mill for dispersion treatment. Can be. In a sand mill, the shearing force due to the flow and collision of the dispersion medium due to glass beads etc. is the dispersing force,
Shearing is most efficient for dispersing aggregated particles.
【００２０】本発明の紫外線遮蔽性超微粒子分散体は、
超微粒子がシリコーンで被覆されていることから超微粒
子の分散性が極めて高く、分散体中の超微粒子が０．１
μｍ以下の分散粒径を有する割合が超微粒子の１０重量
％以上が好ましく、さらに好ましくは２０重量％以上で
あり、特に好ましくは３０重量％以上である。The ultraviolet shielding ultrafine particle dispersion of the present invention comprises:
Since the ultrafine particles are coated with silicone, the dispersibility of the ultrafine particles is extremely high.
The proportion having a dispersed particle size of not more than μm is preferably at least 10% by weight of the ultrafine particles, more preferably at least 20% by weight, particularly preferably at least 30% by weight.
【００２１】本発明の紫外線遮蔽性超微粒子分散体は、
例えば化粧水、乳液、クリーム、化粧油等のスキンケア
商品をはじめ、ファンデーション、パウダー、口紅、頬
紅、アイシャドー、ネイルエナメル等のメークアップ化
粧料等の広範な化粧料に配合できる。The ultraviolet shielding ultrafine particle dispersion of the present invention comprises:
For example, it can be blended into a wide range of cosmetics such as skin care products such as lotion, milky lotion, cream, and cosmetic oil, as well as makeup cosmetics such as foundation, powder, lipstick, blusher, eye shadow, nail enamel and the like.
【００２２】[0022]
・シリコーン被覆酸化亜鉛超微粒子（ZnO-350 、住友大
阪セメント（株）製、比表面積４５ｍ2 ／ｇ、超微粒子
の一次粒径０．０２μｍ）：２４．０重量％（メチルハ
イドロジェンシロキサンとジメチルシロキサンとの共重
合体の被覆量：１．３ｍｇ／ｍ2 ） ・シリコーン被覆酸化チタン超微粒子（TTO-51A 、石原
産業（株）製、比表面積８０ｍ2 ／ｇ、超微粒子の一次
粒径０．０２μｍ）：４．０重量％（メチルハイドロジ
ェンシロキサンとジメチルシロキサンとの共重合体の被
覆量：０．５ｍｇ／ｍ2 ） 〔シリコーン油〕 ・オクタメチルシクロテトラシロキサン（ＳＨ２４４、
東レダウコーニング製）：３２．８重量％ 〔分散剤〕 ・オキサゾリン変性シリコーン（特開平7-133352号公報
の合成例５に記載の方法で合成したもの）：６．３重量
％ 〔エタノール〕 ・３２．９重量％Silicone-coated ultrafine zinc oxide particles (ZnO-350, manufactured by Sumitomo Osaka Cement Co., Ltd., specific surface area: 45 m 2 / g, primary particle size of ultrafine particles: 0.02 μm): 24.0% by weight (methyl hydrogen siloxane and dimethyl) Coating amount of copolymer with siloxane: 1.3 mg / m 2 ) Silicone-coated ultrafine titanium oxide particles (TTO-51A, manufactured by Ishihara Sangyo Co., Ltd., specific surface area 80 m 2 / g, primary particle size of ultrafine particles 0) .02 μm): 4.0% by weight (Coating amount of copolymer of methyl hydrogen siloxane and dimethyl siloxane: 0.5 mg / m 2 ) [Silicone oil] Octamethylcyclotetrasiloxane (SH244,
Toray Dow Corning): 32.8% by weight [Dispersant] Oxazoline-modified silicone (synthesized by the method described in Synthesis Example 5 of JP-A-7-133352): 6.3% by weight [ethanol] 32.9% by weight
【００２３】得られたスラリーの粒度分布を遠心沈降式
粒度分布測定器（島津製作所（株）製SA-CP3）で測定し
たところ、分散粒径が０．１μｍ以下の超微粒子は、全
粒子中の３８．５重量％であった。When the particle size distribution of the obtained slurry was measured by a centrifugal sedimentation type particle size distribution analyzer (SA-CP3 manufactured by Shimadzu Corporation), ultrafine particles having a dispersed particle size of 0.1 μm or less were found in all particles. Of 38.5% by weight.
【００２４】実施例１において生成したスラリーを１ヶ
月間、−５〜４０℃でサイクル保存し、外観及び分散状
態の変化を調べた。 〔分散状態の測定方法〕スラリーをSH244 で３００倍希
釈し、得られた液を紫外／可視分光光度計（島津製作所
（株）製UV-160A ）を用いて光路長１ｍｍのセルで測定
した。The slurry produced in Example 1 was stored in a cycle at -5 to 40 ° C. for one month, and changes in appearance and dispersion were examined. [Measurement Method of Dispersion State] The slurry was diluted 300-fold with SH244, and the obtained liquid was measured with an ultraviolet / visible spectrophotometer (UV-160A manufactured by Shimadzu Corporation) in a cell having an optical path length of 1 mm.
【００２５】分光光度計による測定結果を図１に示す。
１ヶ月のサイクル保存後も、スペクトルに大きな変化は
見られないことから、該スラリーは高分散状態が維持さ
れていることが分かった。また、スラリーの外観を目視
で観察したところ、保存前後に変化は見られなかった。FIG. 1 shows the measurement results obtained by the spectrophotometer.
No significant change was observed in the spectrum even after one month of cycle storage, indicating that the slurry was maintained in a highly dispersed state. Further, when the appearance of the slurry was visually observed, no change was observed before and after storage.
【００２６】[0026]
【発明の効果】本発明の分散体は、超微粒子の分散安定
性が著しく高く、超微粒子の持つ機能を長期間にわたり
発揮し続けることができる分散体である。The dispersion of the present invention is a dispersion in which the dispersion stability of the ultrafine particles is remarkably high and the function of the ultrafine particles can be continuously exhibited for a long period of time.
【図１】図１は、実施例１で得られた分散体の分散処理
直後と１ヶ月保存時の紫外可視分光光度計による光透過
率の測定結果を示すチャート図である。FIG. 1 is a chart showing the results of measurement of light transmittance by an ultraviolet-visible spectrophotometer immediately after dispersion treatment of a dispersion obtained in Example 1 and storage for one month.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 菅原 智 東京都墨田区文花２−１−３ 花王株式会 社研究所内 Ｆターム(参考） 4C083 AB211 AB212 AB241 AC101 AC102 AD151 AD152 AD162 AD172 BB01 BB46 DD39 EE01 4J037 AA11 AA22 CB04 CC28 DD05 DD24 EE03 EE28 EE43 FF02 FF15 FF22 FF30 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Satoshi Sugawara 2-1-3 Bunka, Sumida-ku, Tokyo F-term in Kao Corporation Research Laboratories 4C083 AB211 AB212 AB241 AC101 AC102 AD151 AD152 AD162 AD172 BB01 BB46 DD39 EE01 4J037 AA11 AA22 CB04 CC28 DD05 DD24 EE03 EE28 EE43 FF02 FF15 FF22 FF30
Claims (4)
微粒子、シリコーン油及び分散剤を含有してなる紫外線
遮蔽性超微粒子分散体であって、該紫外線遮蔽性超微粒
子の表面が、０．５ｍｇ／ｍ2 以上のシリコーンで被覆
されてなる紫外線遮蔽性超微粒子分散体。An ultraviolet shielding ultrafine particle dispersion comprising an ultraviolet shielding ultrafine particle having a primary particle diameter of 0.1 μm or less, a silicone oil and a dispersant, wherein the surface of the ultraviolet shielding ultrafine particle is: Ultraviolet ray shielding ultrafine particle dispersion coated with 0.5 mg / m 2 or more of silicone.
０．１μｍ以下の分散粒径を有する請求項１記載の紫外
線遮蔽性超微粒子分散体。2. The ultraviolet-shielding ultrafine particle dispersion according to claim 1, wherein 10% by weight or more of the ultraviolet-shielding ultrafine particles has a dispersed particle size of 0.1 μm or less.
子及び／又は酸化チタン超微粒子である請求項１又は２
記載の紫外線遮蔽性超微粒子分散体。3. The ultrafine ultraviolet shielding particles are ultrafine zinc oxide particles and / or ultrafine titanium oxide particles.
The ultraviolet ray shielding ultrafine particle dispersion according to the above.
１〜３いずれか記載の紫外線遮蔽性超微粒子分散体。4. The ultraviolet-shielding ultrafine particle dispersion according to claim 1, further comprising ethanol.
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|---|---|---|---|
| JP09948099A JP3942767B2 (en) | 1999-04-06 | 1999-04-06 | Ultraviolet shielding ultrafine particle dispersion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09948099A JP3942767B2 (en) | 1999-04-06 | 1999-04-06 | Ultraviolet shielding ultrafine particle dispersion |
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| Publication Number | Publication Date |
|---|---|
| JP2000290156A true JP2000290156A (en) | 2000-10-17 |
| JP3942767B2 JP3942767B2 (en) | 2007-07-11 |
Family
ID=14248486
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09948099A Expired - Fee Related JP3942767B2 (en) | 1999-04-06 | 1999-04-06 | Ultraviolet shielding ultrafine particle dispersion |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003095839A (en) * | 2001-09-27 | 2003-04-03 | Nippon Unicar Co Ltd | Coated zinc oxide powder, method for producing the same and cosmetic using the same |
| JP2007197431A (en) * | 2005-12-28 | 2007-08-09 | Kao Corp | Dispersion containing uv-shielding inorganic particle |
| JP2009051831A (en) * | 2007-08-01 | 2009-03-12 | Kao Corp | Ultraviolet shielding inorganic particle dispersion |
| JP2011207766A (en) * | 2010-03-27 | 2011-10-20 | Nippon Menaade Keshohin Kk | Powder-containing oil-in-water type emulsion cosmetic |
| CN102770923A (en) * | 2010-01-07 | 2012-11-07 | Bloxr公司 | Radiation protection system |
| JP2013136663A (en) * | 2011-12-28 | 2013-07-11 | Sumitomo Osaka Cement Co Ltd | Weather-resistant particle, weather-resistant particle-containing dispersion liquid, weather-resistant particle-containing resin composition, and weather-resistant film and weather-resistant substrate using the same resin composition |
| EP3145473A4 (en) * | 2014-05-19 | 2018-03-07 | Shiseido Company Ltd. | Sunscreen products in which excessive whiteness due to titanium dioxide and zinc oxide is visually masked upon skin application |
-
1999
- 1999-04-06 JP JP09948099A patent/JP3942767B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003095839A (en) * | 2001-09-27 | 2003-04-03 | Nippon Unicar Co Ltd | Coated zinc oxide powder, method for producing the same and cosmetic using the same |
| JP2007197431A (en) * | 2005-12-28 | 2007-08-09 | Kao Corp | Dispersion containing uv-shielding inorganic particle |
| JP2009051831A (en) * | 2007-08-01 | 2009-03-12 | Kao Corp | Ultraviolet shielding inorganic particle dispersion |
| CN102770923A (en) * | 2010-01-07 | 2012-11-07 | Bloxr公司 | Radiation protection system |
| JP2011207766A (en) * | 2010-03-27 | 2011-10-20 | Nippon Menaade Keshohin Kk | Powder-containing oil-in-water type emulsion cosmetic |
| JP2013136663A (en) * | 2011-12-28 | 2013-07-11 | Sumitomo Osaka Cement Co Ltd | Weather-resistant particle, weather-resistant particle-containing dispersion liquid, weather-resistant particle-containing resin composition, and weather-resistant film and weather-resistant substrate using the same resin composition |
| EP3145473A4 (en) * | 2014-05-19 | 2018-03-07 | Shiseido Company Ltd. | Sunscreen products in which excessive whiteness due to titanium dioxide and zinc oxide is visually masked upon skin application |
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|---|---|
| JP3942767B2 (en) | 2007-07-11 |
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