JPH02208369A - Ultraviolet absorbing inorganic pigment - Google Patents
Ultraviolet absorbing inorganic pigmentInfo
- Publication number
- JPH02208369A JPH02208369A JP1030355A JP3035589A JPH02208369A JP H02208369 A JPH02208369 A JP H02208369A JP 1030355 A JP1030355 A JP 1030355A JP 3035589 A JP3035589 A JP 3035589A JP H02208369 A JPH02208369 A JP H02208369A
- Authority
- JP
- Japan
- Prior art keywords
- zinc oxide
- surface area
- specific surface
- ultraviolet absorbing
- zinc
- 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
- 239000001023 inorganic pigment Substances 0.000 title claims description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000011787 zinc oxide Substances 0.000 claims abstract description 23
- 239000004480 active ingredient Substances 0.000 claims description 2
- 238000002834 transmittance Methods 0.000 abstract description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052725 zinc Inorganic materials 0.000 abstract description 8
- 239000011701 zinc Substances 0.000 abstract description 8
- 239000000049 pigment Substances 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract 1
- 235000014692 zinc oxide Nutrition 0.000 description 19
- 238000000034 method Methods 0.000 description 14
- 239000003973 paint Substances 0.000 description 8
- 238000002835 absorbance Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000010419 fine particle Substances 0.000 description 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000976 ink Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
- 239000011667 zinc carbonate Substances 0.000 description 1
- 229910000010 zinc carbonate Inorganic materials 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、紫外線吸収能が要求される分野、例えばプラ
スチックス、塗料、インキ等に配合される紫外線吸収無
機顔料に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention relates to fields in which ultraviolet absorbing ability is required, such as ultraviolet absorbing inorganic pigments that are incorporated into plastics, paints, inks, and the like.
〈従来の技術〉
従来、例えば塗料の主成分をなずポリマーの紫外線によ
る分解を防止するために、紫外線吸収能を有する体質顔
料すなわち紫外線吸収顔料が用いられている。<Prior Art> Extender pigments, that is, ultraviolet absorbing pigments, having ultraviolet absorbing ability have been used in the past, for example, in order to prevent polymers, which are the main components of paints, from being decomposed by ultraviolet rays.
紫外線吸収顔料としては、有機顔料と無機顔料とがある
が、有機溶媒に対して不溶であり、また耐熱性に優れる
無機顔料は、独自の利用分野を有している。例えば、陶
磁器の着色には必要不可欠なものであり、プラスチック
ス、塗料、インキなどの分野にも、幅広い用途を有して
いる。Ultraviolet absorbing pigments include organic pigments and inorganic pigments, but inorganic pigments, which are insoluble in organic solvents and have excellent heat resistance, have unique fields of use. For example, it is essential for coloring ceramics, and has a wide range of uses in fields such as plastics, paints, and inks.
紫外線吸収無機顔料としては、酸化亜鉛、酸化チタンな
どが挙げられるが、酸化亜鉛、とりわけフランス法によ
る高純度酸化亜鉛が、白色顔料中量も大きい紫外線吸収
能を有することから、汎用されている。Examples of ultraviolet-absorbing inorganic pigments include zinc oxide and titanium oxide, but zinc oxide, especially high-purity zinc oxide produced by the French process, is widely used because it has a large amount of ultraviolet absorbing ability as a white pigment.
従来、紫外線吸収無機顔料として広く用いられている酸
化亜鉛は、比表面積が３〜１０ ｍ２／ ｇのものであ
った。Zinc oxide, which has been widely used as an ultraviolet absorbing inorganic pigment, has a specific surface area of 3 to 10 m2/g.
〈発明が解決しようとする課題〉
しかしながら、比表面積３〜１０ｍ’／ｇの酸化亜鉛の
紫外線吸収能は未だ充分とは言い難い。<Problems to be Solved by the Invention> However, the ultraviolet absorption ability of zinc oxide, which has a specific surface area of 3 to 10 m'/g, is still far from sufficient.
また、可視光の透過率が低いため、製品に透明性が要求
される例えばメーキャップ化粧料などの用途には、適さ
ないという問題がある。Furthermore, since the transmittance of visible light is low, there is a problem that it is not suitable for applications that require transparency in the product, such as makeup cosmetics.
本発明は、以上の事情に鑑みなされたものであって、そ
の目的とするところは、従来の紫外線吸収無機顔料に比
べて紫外線吸収能に優れ、しかも可視光の透過率が高い
ため、製品の透明性を損なわない紫外線吸収無機顔料を
提供するにある。The present invention has been made in view of the above circumstances, and its purpose is to provide superior ultraviolet absorption ability compared to conventional ultraviolet-absorbing inorganic pigments, as well as high visible light transmittance. An object of the present invention is to provide an ultraviolet absorbing inorganic pigment that does not impair transparency.
〈課題を解決するための手段及び作用〉上記目的を達成
するための本発明に係る紫外線吸収無機顔料は、比表面
積が２０ｍ２／ｇ以上である酸化亜鉛を有効成分とする
ものである。ここで、比表面積の値はＢＥＴ吸着法に基
ついて測定された値である。<Means and effects for solving the problems> The ultraviolet absorbing inorganic pigment according to the present invention for achieving the above object contains zinc oxide having a specific surface area of 20 m2/g or more as an active ingredient. Here, the value of the specific surface area is a value measured based on the BET adsorption method.
このように比表面積が特定範囲の酸化亜鉛に特定したの
は、比表面積が２０ ｍ２／ ｇ未満の場合、少なくと
も可視光透過率及び紫外線吸収率のいずれか一方が低下
してしまうからである。The reason why zinc oxide with a specific surface area in a specific range was selected is that when the specific surface area is less than 20 m2/g, at least one of visible light transmittance and ultraviolet absorbance decreases.
酸化亜鉛の製造方法としては、フランス法、湿式法など
があるが、既述したように、不純物の混じらない高純度
の酸化亜鉛を得るためには、フランス法か最適である。Methods for producing zinc oxide include the French method and the wet method, but as mentioned above, the French method is most suitable for obtaining highly pure zinc oxide free of impurities.
このフランス法は、溶融させた金属亜鉛をしトルトの中
で］、 ０００℃程度に加熱し、発生する亜鉛蒸気を空
気を用いて酸化し、生成した酸化亜鉛を送風機で空冷管
に送って冷却し、コレクター及びバグフィルタ−で分離
、捕集する方法である。This French method involves heating molten metal zinc in a tort to about 1,000 degrees Celsius, oxidizing the generated zinc vapor using air, and sending the generated zinc oxide to an air-cooled pipe with a blower to cool it. This method separates and collects the waste using a collector and bag filter.
本発明においては、比表面積は大きい方か好ましいが、
フランス法による場合、比表面積か３０を越えるものは
現在のところ得られていない。In the present invention, a larger specific surface area is preferred;
In the case of the French method, a material with a specific surface area of more than 30 has not been obtained so far.
フランス法により比表面積か２０〜３０爪２／ｇの酸化
亜鉛を得るには、金属亜鉛蒸気を一定流速例えば０．５
〜］、５ｋｑ／時て流し、これに例えば１．８Ｎｍ３／
分程度の割合で空気を吹き付ければよい。To obtain zinc oxide with a specific surface area of 20 to 30 μg2/g using the French method, metallic zinc vapor is heated at a constant flow rate of, for example, 0.5
~], 5kq/hour, and add, for example, 1.8Nm3/
All you have to do is blow air at a rate of about a minute.
なお、湿式法を用いた場合、比表面積７０程度のものも
得ることか可能である。Note that when a wet method is used, it is possible to obtain a material with a specific surface area of about 70.
湿式法は、塩化亜鉛溶液にソーダ灰を加えて液中に塩枯
性炭酸亜鉛を沈澱させ、水洗、乾燥後、仮焼する方法で
ある。この方法によると、粒子径か非常に小さく比表面
積が大きいものか得られるか、炭酸イオンが不純物とし
て残留するという欠点かある。The wet method is a method in which soda ash is added to a zinc chloride solution to precipitate salt-drying zinc carbonate in the solution, which is washed with water, dried, and then calcined. According to this method, particles with a very small particle size and a large specific surface area can be obtained, and the disadvantage is that carbonate ions remain as impurities.
〈実施例〉
以下、本発明を実施例に基づいて詳細に説明する。但し
、本発明は下記の実施例に限定されるものではない。<Examples> Hereinafter, the present invention will be described in detail based on Examples. However, the present invention is not limited to the following examples.
（実施例コ）
金属亜鉛蒸気を１．０ｋｑ／時の流速で流し、これに１
、８ Ｎ ｍ”／分程度の割合で空気を吹き付けて酸
化し比表面積２５ｍ２／ｇの酸化亜鉛を調製した。(Example 1) Metallic zinc vapor was flowed at a flow rate of 1.0 kq/hour, and 1
, 8 N m''/min to prepare zinc oxide having a specific surface area of 25 m2/g.
次いで、ニトロセルロース６．３ｇをトルエン８．９ｇ
、イソプロパツール８．９ｇ及び酢酸エチル８．９ｇか
らなる混合溶媒に溶かしてバインダー溶液を調製した。Next, 6.3 g of nitrocellulose was mixed with 8.9 g of toluene.
, 8.9 g of isopropanol, and 8.9 g of ethyl acetate to prepare a binder solution.
次いで、容量１００ ｍ ｆｌのガラス容器に、先に調
製した酸化亜鉛微粒子３ｇ、バインダー溶液３３ｇ１ジ
オクチルフタレート３ｇ１直径３ｍｍの球形のガラスピ
ーズ９０ｇをこの順に入れて、ペイントシェーカーに６
０分間かけて均一に分散させ塗料を作製した。Next, 3 g of zinc oxide fine particles prepared previously, 33 g of binder solution, 3 g of dioctyl phthalate, 90 g of spherical glass beads with a diameter of 3 mm were placed in a glass container with a capacity of 100 m fl in this order, and the mixture was placed in a paint shaker for 6 hours.
A paint was prepared by uniformly dispersing the mixture over a period of 0 minutes.
この塗料を厚さ３０μｍのポリプロピレンフィルムに＃
４バーコーターにて塗布し、フィルム上に塗膜を形成し
た。Apply this paint to a 30 μm thick polypropylene film #
It was applied using a 4-bar coater to form a coating film on the film.
この塗膜形成フィルムの可視光透過率及び紫外線吸収率
を分光光度計（日立社製、型式、１００］０）にて測定
した。The visible light transmittance and ultraviolet absorbance of this coating film-forming film were measured using a spectrophotometer (manufactured by Hitachi, model 100]0).
なお、分光光度計の紫外部の吸収波長は３７０ｎｍを、
また可視部の吸収波長は５２０ｎｍを用いた。In addition, the absorption wavelength of the ultraviolet region of the spectrophotometer is 370 nm.
Further, the absorption wavelength in the visible region was 520 nm.
上記各操作は全て常温で行った。All of the above operations were performed at room temperature.
（比較例１）
比表面積２５ｍ’／ｇの酸化亜鉛微粒子３ｇに代えて市
販されている、比表面積１０ｍ２／ｇの酸化亜鉛微粒子
（堺化学工業社製、微細亜鉛華）３ｇを配合したこと以
外は、実施例１と同様にして塗料の作製、塗膜形成、可
視光透過率及び紫外線吸収率の測定を行った。(Comparative Example 1) Except that 3 g of commercially available zinc oxide fine particles (manufactured by Sakai Chemical Industry Co., Ltd., fine zinc white) with a specific surface area of 10 m2/g was blended instead of 3 g of zinc oxide fine particles with a specific surface area of 25 m'/g. In the same manner as in Example 1, a paint was prepared, a coating film was formed, and the visible light transmittance and ultraviolet absorbance were measured.
（比較例２）
比表面積２５ｍ２／ｇの酸化亜鉛微粒子３ｇに代えて市
販されている、比表面積５ ｍ２／ ｇの酸化亜鉛微粒
子（堺化学工業社製、亜鉛華１号特製）３ｇを配合した
こと以外は、実施例１と同様にして塗料の作製、塗膜形
成、可視光透過率及び紫外線吸収率の測定を行った。(Comparative Example 2) Instead of 3 g of zinc oxide fine particles with a specific surface area of 25 m2/g, 3 g of commercially available zinc oxide fine particles with a specific surface area of 5 m2/g (manufactured by Sakai Chemical Industry Co., Ltd., Zinchua No. 1 special product) was blended. Except for the above, a coating material was prepared, a coating film was formed, and the visible light transmittance and ultraviolet absorbance were measured in the same manner as in Example 1.
上記各塗料の可視光透過率（％）及び紫外線吸収率（％
）を、表に示す。Visible light transmittance (%) and ultraviolet absorption rate (%) of each of the above paints
) are shown in the table.
表
表より明らかなように、紫外線吸収無機顔料として比表
面積２５ｍ２／ｇの酸化亜鉛を配合した場合は、可視光
透過率及び紫外線吸収率ともに高いのに対して、比表面
積１０ ｍ’／ ｇのものを配合した場合は、紫外線吸
収率は高いものの可視光透過率か低く、また比表面積５
ｍ２／ ｇのものを配合した場合は、可視光透過率及
び紫外線吸収率ともに低いことが分る。As is clear from the table, when zinc oxide with a specific surface area of 25 m2/g is blended as an ultraviolet absorbing inorganic pigment, both visible light transmittance and ultraviolet absorbance are high, whereas with a specific surface area of 10 m'/g When compounded, the ultraviolet absorption rate is high, but the visible light transmittance is low, and the specific surface area is 5.
It can be seen that when m2/g is blended, both visible light transmittance and ultraviolet absorbance are low.
〈発明の効果〉
本発明に係る紫外線吸収無機顔料は、紫外線吸収能に優
れ、また高い可視光透過率を有する等、本発明は優れた
特有の効果を奏する。<Effects of the Invention> The ultraviolet absorbing inorganic pigment according to the present invention has excellent ultraviolet absorbing ability and high visible light transmittance, and the present invention exhibits excellent unique effects.
Claims (1)
効成分とすることを特徴とする 紫外線吸収無機顔料。[Scope of Claims] 1. An ultraviolet absorbing inorganic pigment characterized by containing as an active ingredient zinc oxide having a specific surface area of 20 m^2/g or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1030355A JPH02208369A (en) | 1989-02-08 | 1989-02-08 | Ultraviolet absorbing inorganic pigment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1030355A JPH02208369A (en) | 1989-02-08 | 1989-02-08 | Ultraviolet absorbing inorganic pigment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02208369A true JPH02208369A (en) | 1990-08-17 |
Family
ID=12301551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1030355A Pending JPH02208369A (en) | 1989-02-08 | 1989-02-08 | Ultraviolet absorbing inorganic pigment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02208369A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5366660A (en) * | 1991-10-04 | 1994-11-22 | Tioxide Specialties Limited | Dispersions |
| US5618580A (en) * | 1992-12-28 | 1997-04-08 | Kao Corporation | Method for producing ceramic fine particles and apparatus used therefor |
| JP2009191245A (en) * | 2008-01-18 | 2009-08-27 | Aisin Chem Co Ltd | Water-based coating material |
| JP6037080B1 (en) * | 2016-06-14 | 2016-11-30 | 住友大阪セメント株式会社 | Zinc oxide powder for cosmetics, dispersions, cosmetics |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62228006A (en) * | 1985-12-18 | 1987-10-06 | Kao Corp | Sunscreen cosmetic |
-
1989
- 1989-02-08 JP JP1030355A patent/JPH02208369A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62228006A (en) * | 1985-12-18 | 1987-10-06 | Kao Corp | Sunscreen cosmetic |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5366660A (en) * | 1991-10-04 | 1994-11-22 | Tioxide Specialties Limited | Dispersions |
| US5618580A (en) * | 1992-12-28 | 1997-04-08 | Kao Corporation | Method for producing ceramic fine particles and apparatus used therefor |
| JP2009191245A (en) * | 2008-01-18 | 2009-08-27 | Aisin Chem Co Ltd | Water-based coating material |
| JP6037080B1 (en) * | 2016-06-14 | 2016-11-30 | 住友大阪セメント株式会社 | Zinc oxide powder for cosmetics, dispersions, cosmetics |
| JP2017222589A (en) * | 2016-06-14 | 2017-12-21 | 住友大阪セメント株式会社 | Zinc oxide powder for cosmetics, dispersion liquid, and cosmetics |
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