JPH08104512A - Ultraviolet shielding material consisting of zinc oxide-containing spherical silica and cosmetic material - Google Patents
Ultraviolet shielding material consisting of zinc oxide-containing spherical silica and cosmetic materialInfo
- Publication number
- JPH08104512A JPH08104512A JP23782794A JP23782794A JPH08104512A JP H08104512 A JPH08104512 A JP H08104512A JP 23782794 A JP23782794 A JP 23782794A JP 23782794 A JP23782794 A JP 23782794A JP H08104512 A JPH08104512 A JP H08104512A
- Authority
- JP
- Japan
- Prior art keywords
- zinc oxide
- spherical silica
- ultraviolet shielding
- silica
- shielding material
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、紫外線遮蔽材、特に、
化粧品原料、塗料添加剤、樹脂添加剤などの用途に使用
しうる紫外線遮蔽能材、および、この紫外線遮蔽材が配
合された化粧料に関する。BACKGROUND OF THE INVENTION The present invention relates to an ultraviolet shielding material, and more particularly,
The present invention relates to an ultraviolet ray shielding material that can be used in applications such as cosmetic raw materials, paint additives, resin additives, and cosmetics containing the ultraviolet ray shielding material.
【０００２】[0002]
【従来の技術】従来より酸化亜鉛は、紫外線遮蔽剤とし
て、化粧品原料、樹脂添加剤、塗料添加剤、ガラス等の
コーティング剤成分に用いられている。2. Description of the Related Art Zinc oxide has heretofore been used as a UV shielding agent in cosmetic raw materials, resin additives, paint additives, and coating agent components such as glass.
【０００３】紫外線遮蔽効果の向上、透明性の向上を目
的として、粒子の微細化が試みられている。たとえば、
最大粒径０．１μｍ以下で平均粒径１０〜６０ｎｍの微
粒子酸化亜鉛を配合した化粧料（特開昭６０−２３１６
０７号公報）、平均粒子径２０ｎｍ以下の酸化亜鉛を含
む化粧用組成物（特開昭６２−８４０１７号公報）、平
均粒径７０〜３００ｎｍの酸化亜鉛を配合した化粧料
（特開昭６２−２２８００６号公報）、粒径が０．１μ
ｍ以下の酸化亜鉛を分散させた塗料組成物（特開平２−
２６５９７６号公報）、が開示されている。Attempts have been made to make the particles finer for the purpose of improving the ultraviolet shielding effect and improving the transparency. For example,
Cosmetics containing fine particle zinc oxide having a maximum particle size of 0.1 μm or less and an average particle size of 10 to 60 nm (JP-A-60-2316).
No. 07), a cosmetic composition containing zinc oxide having an average particle size of 20 nm or less (JP-A-62-84017), and a cosmetic composition containing zinc oxide having an average particle size of 70 to 300 nm (JP-A-62-84017). No. 228006), the particle size is 0.1μ
A coating composition in which zinc oxide having a particle size of m or less is dispersed
No. 265976).
【０００４】しかし、微粒子化した酸化亜鉛は、凝集し
やすく、分散配合することが困難であった。また、比表
面積が大きくなることにより活性が強くなり、一緒に配
合した有機成分を分解する傾向がある。そこで、分散性
を向上させるために、担体表面に固着剤により酸化亜鉛
微粒子を固着した顔料（特開昭６３−１１９４１８号公
報）が提案されている。また、分解活性を抑えるため
に、表面をＡｌ、Ｓｉなどの酸化物で被覆した酸化亜鉛
（特開平３−１８３６２０号公報）が提案されている。However, finely divided zinc oxide easily aggregates, and it is difficult to mix and disperse it. In addition, the larger specific surface area increases the activity and tends to decompose the organic components blended together. Therefore, in order to improve the dispersibility, a pigment in which zinc oxide fine particles are fixed to the surface of a carrier with a fixing agent (Japanese Patent Laid-Open No. 63-119418) has been proposed. Further, in order to suppress decomposition activity, zinc oxide whose surface is coated with an oxide such as Al or Si has been proposed (JP-A-3-183620).
【０００５】しかし、担体表面に酸化亜鉛を固着したも
のは、表面に酸化亜鉛が露出しているために、活性が高
く、流動性が悪いという問題がある。また、微粒子の酸
化亜鉛を他の金属酸化物で被覆したものはもとの酸化亜
鉛の形状を保持しているため、流動性が低く化粧料に配
合した場合は使用感が悪いという問題があった。However, the one in which zinc oxide is fixed on the surface of the carrier has a problem that the activity is high and the fluidity is poor because the zinc oxide is exposed on the surface. In addition, since fine zinc oxide coated with another metal oxide retains the original zinc oxide shape, there is a problem that the fluidity is low and the feel of use is poor when blended in cosmetics. It was
【０００６】さらに、顔料を分散したケイ酸塩を酸でゲ
ル化する球状シリカの製造方法（米国特許第４０９０８
８７号明細書）、ならびに顔料を含有した球状シリカ
（米国特許第４１３２５６０号明細書）が開示されてい
るが、紫外線遮蔽性能の観点からは反応条件等が適当で
なく、紫外線遮蔽材として使用するには必ずしも最適で
なかった。Further, a method for producing spherical silica in which a silicate in which a pigment is dispersed is gelled with an acid (US Pat. No. 40908).
No. 87), and spherical silica containing a pigment (US Pat. No. 4,132,560) are disclosed, but the reaction conditions are not appropriate from the viewpoint of ultraviolet shielding performance, and the silica is used as an ultraviolet shielding material. Wasn't always optimal for.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、紫外線遮蔽
性能が高く、かつ、化粧料などに配合した場合に、平滑
性や流動性が良好で、透明感の高い紫外線遮蔽材を得る
ことを目的とする。DISCLOSURE OF THE INVENTION The present invention aims at obtaining an ultraviolet light shielding material having high ultraviolet light shielding performance, good smoothness and fluidity, and high transparency when blended in cosmetics and the like. To aim.
【０００８】[0008]
【課題を解決するための手段】本発明は、シリカマトリ
ックス中に酸化亜鉛粒子が分散した球状シリカであっ
て、この球状シリカ３重量部を流動パラフィン７重量部
中に３本ロールを用いて分散させて得たペーストの厚さ
３０μｍでの分光透過率が、波長３２０ｎｍにおいては
２０％以下、かつ、波長４００ｎｍにおいては４０％以
上である紫外線遮蔽材を提供する。The present invention is a spherical silica in which zinc oxide particles are dispersed in a silica matrix, and 3 parts by weight of this spherical silica is dispersed in 7 parts by weight of liquid paraffin using a three-roll mill. Provided is an ultraviolet shielding material having a spectral transmittance of 20% or less at a wavelength of 320 nm and 40% or more at a wavelength of 400 nm in a paste having a thickness of 30 μm.
【０００９】分光透過率は、次のようにして測定する。
酸化亜鉛含有球状シリカ３重量部に対して流動パラフィ
ン７重量部を混合し、３本ロールを用いて均一になるま
で分散するとペースト状になる。石英板でこのペースト
を挟みスペーサなどでペーストの厚みを３０μｍに調整
したものの分光透過率を、石英板＋流動パラフィン（厚
み３０μｍ）をブランクとして測定する。The spectral transmittance is measured as follows.
7 parts by weight of liquid paraffin is mixed with 3 parts by weight of zinc oxide-containing spherical silica, and the mixture is dispersed by a three-roll mill until it becomes uniform to form a paste. This paste is sandwiched between quartz plates and the thickness of the paste is adjusted to 30 μm with a spacer or the like, and the spectral transmittance is measured using a quartz plate + liquid paraffin (thickness 30 μm) as a blank.
【００１０】波長３２０ｎｍの透過率は２０％以下であ
ることが必要である。この波長の透過率が小さいほど紫
外線遮蔽特性が良いことを示す。透過率が２０％より高
いと、化粧料など配合したときに所期の紫外線遮蔽効果
が得られないので不適当である。波長３２０ｎｍの透過
率が１５％で以下である場合は、さらに好ましい。The transmittance at a wavelength of 320 nm needs to be 20% or less. The smaller the transmittance of this wavelength is, the better the ultraviolet shielding property is. If the transmittance is higher than 20%, the desired UV-shielding effect cannot be obtained when compounded with cosmetics and the like, which is unsuitable. It is more preferable that the transmittance at a wavelength of 320 nm is 15% or less.
【００１１】波長４００ｎｍの透過率は４０％以上であ
ることが必要である。透過率が４０％より低いと、可視
光の透過性が悪くなり、化粧料などに配合した場合に、
透明感が損なわれ、白っぽさが目立つので不適当であ
る。波長４００ｎｍの透過率が５０％以上である場合
は、さらに好ましい。The transmittance at a wavelength of 400 nm needs to be 40% or more. If the transmittance is lower than 40%, the transmittance of visible light becomes poor, and when blended into cosmetics,
It is unsuitable because the transparency is lost and whitish is noticeable. It is more preferable that the transmittance at a wavelength of 400 nm is 50% or more.
【００１２】酸化亜鉛含有球状シリカは、１０重量％の
水スラリーにしたときのｐＨが７〜９であることが好ま
しい。より好ましいｐＨは７〜８である。具体的には、
酸化亜鉛含有球状シリカ５ｇを純水４５ｇに入れ、１０
分間撹拌した後、スラリーのｐＨを測定した。The zinc oxide-containing spherical silica preferably has a pH of 7 to 9 when made into a 10 wt% water slurry. A more preferable pH is 7-8. In particular,
5 g of spherical silica containing zinc oxide was added to 45 g of pure water, and 10
After stirring for a minute, the pH of the slurry was measured.
【００１３】化粧品原料や塗料、樹脂の添加剤として用
いる場合、シリカを水に分散させたときのｐＨ（以下シ
リカのｐＨという）は７〜９のほぼ中性であることが望
ましい。化粧品に配合する場合は、ｐＨが高いと肌あれ
の原因になるおそれがあるので好ましくない。また、上
記ｐＨの範囲の酸性側またはアルカリ性側になった場合
は、同時に配合される物質の凝集を促進したり、分解を
促進する可能性があるので好ましくない。When used as an additive for cosmetic raw materials, paints, and resins, the pH when silica is dispersed in water (hereinafter referred to as the pH of silica) is preferably about 9 to about neutral. When incorporated into cosmetics, a high pH is not preferable because it may cause rough skin. Further, when the pH value is on the acidic side or the alkaline side, it is not preferable because it may promote aggregation of substances to be mixed at the same time or decomposition.
【００１４】酸化亜鉛含有球状シリカに含有される酸化
亜鉛の粒子径は、０．００５〜０．５μｍであることが
好ましい。粒子径が０．５μｍを超えると紫外線の遮蔽
性能が低くなり好ましくない。また、０．００５μｍよ
り小さくなると紫外線の遮蔽性能が低くなるとともに遮
蔽できる波長領域が短波長側にシフトするので好ましく
ない。酸化亜鉛の平均粒子径は０．０１〜０．３μｍが
より好ましい。酸化亜鉛の含有量は全体の１０〜６０重
量％が好ましい。The particle size of zinc oxide contained in the spherical silica containing zinc oxide is preferably 0.005 to 0.5 μm. If the particle size exceeds 0.5 μm, the ultraviolet ray shielding performance is deteriorated, which is not preferable. On the other hand, if it is smaller than 0.005 μm, the ultraviolet ray shielding performance is deteriorated, and the wavelength range capable of shielding is shifted to the short wavelength side, which is not preferable. The average particle diameter of zinc oxide is more preferably 0.01 to 0.3 μm. The content of zinc oxide is preferably 10 to 60% by weight based on the whole.
【００１５】酸化亜鉛含有シリカの平均粒径は１〜５０
μｍであることが好ましい。本発明において、球状と
は、シリカの外形を走査型電子顕微鏡などで観察した場
合に、粒子の大部分が実質的に球状を示すことをいう。
したがって、必ずしも真球形状のみを指すものではな
い。The zinc oxide-containing silica has an average particle size of 1 to 50.
It is preferably μm. In the present invention, the term “spherical” means that most of the particles have a substantially spherical shape when the outer shape of silica is observed with a scanning electron microscope or the like.
Therefore, it does not necessarily mean only the true spherical shape.
【００１６】酸化亜鉛を含有した球状シリカは、たとえ
ば、公知の方法で製造された多孔質球状シリカの細孔内
に亜鉛を含む化合物を含浸し、公知の方法で酸化亜鉛に
分解し、担持することにより製造できる。この場合、担
持した後で、熱処理を行うことにより、紫外線遮蔽性能
を向上させることができる。The spherical silica containing zinc oxide is, for example, impregnated with a compound containing zinc in the pores of the porous spherical silica produced by a known method, decomposed into zinc oxide by a known method, and loaded. It can be manufactured. In this case, the ultraviolet shielding performance can be improved by carrying out heat treatment after supporting.
【００１７】しかし、アルカリケイ酸塩溶液またはシリ
カゾルに酸化亜鉛を分散し、これを酸などでゲル化する
場合は、シリカマトリックス中に酸化亜鉛をより均質に
分散できるので好ましい。この方法によると、反応条件
を適切に選択することにより紫外線の遮蔽性能を向上さ
せることができる。However, it is preferable to disperse zinc oxide in an alkali silicate solution or silica sol and gelate this with an acid or the like, because zinc oxide can be dispersed more uniformly in the silica matrix. According to this method, the ultraviolet shielding performance can be improved by appropriately selecting the reaction conditions.
【００１８】本発明の酸化亜鉛含有球状シリカからなる
紫外線遮蔽材は、ファンデーション、乳液、ローショ
ン、クリーム、口紅、アイシャドウ、ボディーパウダ
ー、制汗剤、シャンプー、リンス等の従来より製造され
ている化粧料に好適に配合できる。酸化亜鉛含有球状シ
リカが配合された化粧料は、紫外線防止効果が高く、そ
の持続性が長く、また化粧料に配合される他の成分の分
解性が低い。さらには、すべり性、伸び等の使用感に優
れる。The UV-shielding material composed of zinc oxide-containing spherical silica of the present invention is a conventionally produced makeup such as foundation, emulsion, lotion, cream, lipstick, eye shadow, body powder, antiperspirant, shampoo and conditioner. Can be suitably blended with the ingredients. The cosmetics containing the spherical silica containing zinc oxide have a high UV-preventing effect and a long-lasting effect, and the other components contained in the cosmetics have low degradability. Further, it has excellent feeling in use such as slipperiness and elongation.
【００１９】また、酸化亜鉛含有球状シリカの表面が、
Ｓｉ、Ａｌ、Ｚｒなどの金属の酸化物または水酸化物、
またはナイロン、ポリエチレン、ポリプロピレン等の樹
脂で被覆されたものも好適に配合できる。The surface of the zinc oxide-containing spherical silica is
Oxides or hydroxides of metals such as Si, Al and Zr,
Alternatively, a material coated with a resin such as nylon, polyethylene or polypropylene can also be suitably blended.
【００２０】酸化亜鉛含有球状シリカの表面および前述
の被覆されたものの表面が、シリコーンオイル、シラン
カップリング剤、チタネートカップリング剤、アルコー
ル、界面活性剤、その他の表面処理剤、表面改質剤によ
って表面処理されたものは化粧品に配合した際化粧持ち
が向上し、カップリング剤で処理されたものは樹脂に配
合した際、強度が向上し、また分散安定性が増大する。The surface of the spherical silica containing zinc oxide and the surface of the above-mentioned coated one are treated with silicone oil, a silane coupling agent, a titanate coupling agent, an alcohol, a surfactant, other surface treating agents and surface modifying agents. When surface-treated, it has improved makeup retention when incorporated into cosmetics, and when treated with a coupling agent, it has improved strength and dispersion stability when incorporated into a resin.
【００２１】さらに、樹脂、塗料等に本発明の酸化亜鉛
含有球状シリカからなる紫外線遮蔽材を配合充填するこ
とにより、その耐紫外線性が向上するとともに、その下
地を紫外線から保護できる。また、酸化亜鉛を担持した
球状シリカは、同時に配合される他の成分の分解性が低
い。Further, by compounding and filling a resin, paint or the like with the ultraviolet shielding material comprising the spherical silica containing zinc oxide of the present invention, its ultraviolet resistance is improved and its underlayer can be protected from ultraviolet rays. Further, the spherical silica supporting zinc oxide has low decomposability of other components simultaneously mixed.
【００２２】[0022]
実施例１ ３号珪曹（ＳｉＯ2 濃度２９重量％）２８８．４ｇを純
水８７．３ｇで希釈したケイ酸ナトリウム水溶液中に、
平均粒子径０．２６μｍの酸化亜鉛４５ｇを加え、ホモ
ミキサーで１０分撹拌して分散させた。この分散液を、
トリクロロトリフルオロエタン９６０ｍｌにソルビタン
モノオレイン酸エステル３．３６ｇを溶解した溶液に投
入し、ホモミキサーで乳化させた。この結果Ｗ／Ｏ型の
乳化液が形成された。この乳化液を酸で中和してシリカ
成分をゲル化させた。トリクロロトリフルオロエタンを
分離した後のスラリーを濾過し、ケーキを固形分を洗浄
し乾燥した。この結果得られた酸化亜鉛含有球状シリカ
の酸化亜鉛の含有量は３２重量％、ｐＨは７．３であっ
た。上述の方法で測定した透過率は４００ｎｍで５０．
５％、３２０ｎｍで１０．０％であった。Example 1 In a sodium silicate aqueous solution prepared by diluting 288.4 g of No. 3 silicic acid (SiO 2 concentration: 29% by weight) with 87.3 g of pure water,
45 g of zinc oxide having an average particle diameter of 0.26 μm was added, and the mixture was stirred for 10 minutes with a homomixer and dispersed. This dispersion is
A solution prepared by dissolving 3.36 g of sorbitan monooleate in 960 ml of trichlorotrifluoroethane was added and emulsified with a homomixer. As a result, a W / O type emulsion was formed. The emulsion was neutralized with an acid to gel the silica component. The slurry after separation of trichlorotrifluoroethane was filtered, the cake was washed for solids and dried. The zinc oxide-containing spherical silica obtained as a result had a zinc oxide content of 32% by weight and a pH of 7.3. The transmittance measured by the above method is 400 at 400 nm.
5% and 10.0% at 320 nm.
【００２３】実施例２ 酸化亜鉛に平均粒子径０．０４μｍの酸化亜鉛を用いた
以外は実施例１と同様に行い、得られた酸化亜鉛含有球
状シリカの酸化亜鉛含有量は３１重量％、ｐＨは７．５
であった。透過率は４００ｎｍで６１．９％、３２０ｎ
ｍで１０．７％であった。Example 2 The same procedure as in Example 1 was carried out except that zinc oxide having an average particle size of 0.04 μm was used as the zinc oxide. The zinc oxide-containing spherical silica obtained had a zinc oxide content of 31% by weight and a pH of Is 7.5
Met. Transmittance is 61.9% at 400 nm, 320 n
It was 10.7% in m.
【００２４】実施例３ 表１（右欄数値の単位は重量部）に示す成分（１）〜
（４）をよく混合し、これに成分（７）の約半分と成分
（８）を加え、ホモミキサーで均一に分散した後、成分
（５）、（６）および成分（７）の残りを加熱融解して
加えよく混合した。これを容器に流し込んで冷却固化し
て、紫外線防止効果の高い使用感の良いファンデーショ
ンを製造した。１カ月後の分散安定性も良好であり、変
色や異臭なども見られなかった。Example 3 Components (1) to (1) shown in Table 1 (the unit of numerical values in the right column are parts by weight)
After thoroughly mixing (4), about half of the component (7) and the component (8) were added, and the mixture was uniformly dispersed with a homomixer. Then, the rest of the components (5), (6) and the component (7) were added. It was melted by heating, added and mixed well. This was poured into a container and solidified by cooling to produce a foundation having a high UV protection effect and a good feeling in use. The dispersion stability after 1 month was also good, and no discoloration or offensive odor was observed.
【００２５】[0025]
【表１】 [Table 1]
【００２６】比較例１ 透過率が４００ｎｍで６１．９％、３２０ｎｍで１０．
７％である酸化亜鉛含有球状シリカ（酸化亜鉛含有量３
２重量％、ｐＨ７．５）を実施例１の酸化亜鉛含有シリ
カに代えた以外は実施例３と同様にしてファンデーショ
ンを得た。紫外線防止効果は同程度であったが、肌に塗
布後の感じに透明感がすくなかった。Comparative Example 1 The transmittance was 61.9% at 400 nm, and 10 at 320 nm.
7% zinc oxide-containing spherical silica (zinc oxide content 3
A foundation was obtained in the same manner as in Example 3 except that the zinc oxide-containing silica of Example 1 was used instead of 2% by weight, pH 7.5). Although the effect of preventing ultraviolet rays was about the same, the feeling of transparency after application to the skin was poor.
【００２７】比較例２ 洗浄条件を代えた結果、ｐＨが１０．３である以外は、
実施例１と同様の酸化亜鉛含有球状シリカを得た。酸化
亜鉛の含有量は３２重量％、透過率は４００ｎｍで５
０．５％、３２０ｎｍで１０．０％であった。この酸化
亜鉛含有球状シリカを使用して、実施例３と同様にファ
ンデーションを製造した。紫外線反射効果ならびに使用
感は良好であったが、１カ月後には、一部凝集体が見ら
れた。Comparative Example 2 As a result of changing the washing conditions, except that the pH was 10.3,
The same zinc oxide-containing spherical silica as in Example 1 was obtained. The content of zinc oxide is 32% by weight, and the transmittance is 5 at 400 nm.
It was 0.5% and 10.0% at 320 nm. A foundation was produced in the same manner as in Example 3 using this zinc oxide-containing spherical silica. The ultraviolet reflection effect and the feeling of use were good, but some aggregates were observed after 1 month.
【００２８】実施例４ 表２（右欄数値の単位は重量部）に示す粉体成分（１）
〜（６）を混合粉砕し、これをヘンシェルミキサーに移
した後、残余の成分（７）〜（８）を加え均一となるよ
うに混合した。ふるいにかけて粒度を揃えた後、これを
金皿にプレス成型し、紫外線防止効果の高い使用感の良
いプレス状パウダーファンデーションを製造した。Example 4 Powder component (1) shown in Table 2 (numerical units in right column are parts by weight)
~ (6) were mixed and pulverized, transferred to a Henschel mixer, and the remaining components (7) to (8) were added and mixed uniformly. After sieving to make the particle size uniform, this was press-molded in a gold plate to produce a pressed powder foundation having a high UV protection effect and a good feeling in use.
【００２９】[0029]
【表２】 [Table 2]
【００３０】実施例５ 実施例１の酸化亜鉛含有球状シリカをメチルハイドロジ
ェンポリシロキサンで疎水化処理を行った。この疎水化
処理シリカを用い、表３（右欄数値の単位は重量部）に
示す成分（１）〜（７）からなる群、（８）〜（９）か
らなる群、および（１０）〜（１２）からなる群を、そ
れぞれ別個に加熱混合した。それらの混合物を混合後、
成分（１３）を加えて徐冷した。ホモミキサーで乳化
し、紫外線防止効果が高く、使用感に優れ、汗崩れのし
ないリキッドファンデーションを製造した。Example 5 The zinc oxide-containing spherical silica of Example 1 was hydrophobized with methyl hydrogen polysiloxane. Using this hydrophobized silica, the group consisting of components (1) to (7), the group consisting of (8) to (9), and the group (10) to shown in Table 3 (the unit of numerical values in the right column is parts by weight). The groups consisting of (12) were heated and mixed separately. After mixing those mixtures,
The component (13) was added and gradually cooled. A liquid foundation was produced which was emulsified with a homomixer and had a high ultraviolet ray-preventing effect, an excellent feeling in use, and sweat retention.
【００３１】[0031]
【表３】 [Table 3]
【００３２】[0032]
【発明の効果】本発明の酸化亜鉛含有球状シリカからな
る紫外線遮蔽材は、高い紫外線遮蔽性能を有するととも
に高い透明性も有する。本発明の酸化亜鉛含有球状シリ
カを化粧料に配合することにより、紫外線遮蔽特性に優
れ、肌につけたときの感触が良好であるなどの効果が達
成される。さらに、ｐＨが中性付近であるので化粧料に
配合した際、肌への刺激が少なく、分散安定性に優れて
いる。EFFECT OF THE INVENTION The ultraviolet shielding material comprising the spherical silica containing zinc oxide of the present invention has high ultraviolet shielding performance and high transparency. By incorporating the zinc oxide-containing spherical silica of the present invention into a cosmetic composition, effects such as excellent ultraviolet shielding properties and a good feel when applied to the skin are achieved. Furthermore, since the pH is around neutral, it is less irritating to the skin when blended in cosmetics, and has excellent dispersion stability.
【００３３】また、樹脂、塗料等に酸化亜鉛含有球状シ
リカを配合充填することにより、その耐紫外線性が向上
するとともに、その下地を紫外線から保護することがで
きる。本発明の酸化亜鉛含有球状シリカは、紙、ガラ
ス、フィルム等のコーティング剤の成分として使用する
ことにより前述と同様の効果が達成される。By mixing and filling the zinc oxide-containing spherical silica in a resin, paint or the like, its UV resistance can be improved and its underlayer can be protected from UV rays. When the zinc oxide-containing spherical silica of the present invention is used as a component of a coating agent for paper, glass, films, etc., the same effect as described above can be achieved.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０９Ｃ 1/28 ＰＡＰ Ｃ０９Ｋ 3/00 １０４ Ｚ (72)発明者 平野 八朗 千葉県市原市五井海岸10番地 旭硝子株式 会社千葉工場内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical indication location C09C 1/28 PAP C09K 3/00 104 Z (72) Inventor Hirano Hirano 10 Goi Kaigan, Ichihara, Chiba Prefecture Address Asahi Glass Co., Ltd. Chiba factory
Claims (3)
散した球状シリカであって、この球状シリカ３重量部を
流動パラフィン７重量部中に３本ロールを用いて分散さ
せて得たペーストの厚さ３０μｍでの分光透過率が、波
長３２０ｎｍにおいては２０％以下、かつ、波長４００
ｎｍにおいては４０％以上である酸化亜鉛含有球状シリ
カからなる紫外線遮蔽材。1. A spherical silica in which zinc oxide particles are dispersed in a silica matrix, and 3 parts by weight of the spherical silica is dispersed in 7 parts by weight of liquid paraffin using a three-roll mill to obtain a thickness of a paste. Spectral transmittance at 30 μm is 20% or less at a wavelength of 320 nm and a wavelength of 400
An ultraviolet shielding material consisting of spherical silica containing zinc oxide having a wavelength of 40% or more.
る請求項１の紫外線遮蔽材。2. The ultraviolet shielding material according to claim 1, wherein the 10 wt% water slurry has a pH of 7-9.
配合されたことを特徴とする化粧料。3. A cosmetic comprising the ultraviolet shielding material according to claim 1 or 2 incorporated therein.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23782794A JPH08104512A (en) | 1994-09-30 | 1994-09-30 | Ultraviolet shielding material consisting of zinc oxide-containing spherical silica and cosmetic material |
| EP95115362A EP0704502B1 (en) | 1994-09-30 | 1995-09-28 | Zink-oxide containing spherical silica and process for its production |
| DE69502788T DE69502788T2 (en) | 1994-09-30 | 1995-09-28 | Silicic acid containing zinc oxide and process for its preparation |
| US08/833,427 US5738718A (en) | 1994-09-30 | 1997-04-07 | Zinc oxide-containing spherical silica and process for its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23782794A JPH08104512A (en) | 1994-09-30 | 1994-09-30 | Ultraviolet shielding material consisting of zinc oxide-containing spherical silica and cosmetic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08104512A true JPH08104512A (en) | 1996-04-23 |
Family
ID=17020998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23782794A Pending JPH08104512A (en) | 1994-09-30 | 1994-09-30 | Ultraviolet shielding material consisting of zinc oxide-containing spherical silica and cosmetic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08104512A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19734547A1 (en) * | 1997-08-01 | 1999-02-04 | Lancaster Group Gmbh | Cosmetic compositions with agglomerated substrates |
| JPH11256133A (en) * | 1998-03-12 | 1999-09-21 | Nippon Muki Kagaku Kogyo Kk | Ultraviolet light-screening agent and its production |
| JP2003516296A (en) * | 1999-12-08 | 2003-05-13 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Continuous production method of silica-based microgel |
| JP2003292818A (en) * | 2002-01-31 | 2003-10-15 | Showa Denko Kk | Aqueous slurry of silica-coated zinc oxide fine particle and polymer composition |
| WO2016076350A1 (en) * | 2014-11-13 | 2016-05-19 | 住友大阪セメント株式会社 | Silicon oxide-coated zinc oxide and method for preparing same, and composition and cosmetic material containing silicon oxide-coated zinc oxide |
-
1994
- 1994-09-30 JP JP23782794A patent/JPH08104512A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19734547A1 (en) * | 1997-08-01 | 1999-02-04 | Lancaster Group Gmbh | Cosmetic compositions with agglomerated substrates |
| US6309627B1 (en) | 1997-08-01 | 2001-10-30 | Lancaster Group Gmbh | Cosmetic compositions with agglomerated substrates |
| CN1120699C (en) * | 1997-08-01 | 2003-09-10 | 朗开斯特集团有限公司 | Cosmetic compsns. with agglomerated substrates |
| DE19734547B4 (en) * | 1997-08-01 | 2004-08-19 | Lancaster Group Gmbh | Cosmetic compositions with agglomerated substrates |
| JPH11256133A (en) * | 1998-03-12 | 1999-09-21 | Nippon Muki Kagaku Kogyo Kk | Ultraviolet light-screening agent and its production |
| JP2003516296A (en) * | 1999-12-08 | 2003-05-13 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Continuous production method of silica-based microgel |
| JP4808350B2 (en) * | 1999-12-08 | 2011-11-02 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Continuous production method of silica-based microgel |
| JP2003292818A (en) * | 2002-01-31 | 2003-10-15 | Showa Denko Kk | Aqueous slurry of silica-coated zinc oxide fine particle and polymer composition |
| WO2016076350A1 (en) * | 2014-11-13 | 2016-05-19 | 住友大阪セメント株式会社 | Silicon oxide-coated zinc oxide and method for preparing same, and composition and cosmetic material containing silicon oxide-coated zinc oxide |
| KR20170083043A (en) * | 2014-11-13 | 2017-07-17 | 스미토모 오사카 세멘토 가부시키가이샤 | Silicon oxide-coated zinc oxide and method for preparing same, and composition and cosmetic material containing silicon oxide-coated zinc oxide |
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