JP4513198B2 - Aqueous nail polish with excellent pigment admixture stability - Google Patents
Aqueous nail polish with excellent pigment admixture stability Download PDFInfo
- Publication number
- JP4513198B2 JP4513198B2 JP2000309137A JP2000309137A JP4513198B2 JP 4513198 B2 JP4513198 B2 JP 4513198B2 JP 2000309137 A JP2000309137 A JP 2000309137A JP 2000309137 A JP2000309137 A JP 2000309137A JP 4513198 B2 JP4513198 B2 JP 4513198B2
- Authority
- JP
- Japan
- Prior art keywords
- titanium oxide
- water
- pigment
- anatase
- nail
- 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 - Lifetime
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Description
【0001】
【発明の属する技術分野】
本発明は水系美爪料に関し、さらに詳しくは、経時的に色むらや沈殿の生じにくい顔料混和安定性に優れた水系美爪料に関するものである。
【0002】
【従来の技術】
従来の美爪料は、ニトロセルロース等の皮膜形成剤と、アルキッド樹脂、スルホンアミド樹脂、シュークロース系樹脂、アクリル樹脂等の樹脂類に、可塑剤、色材等の添加成分を加えたものを、エステル系、ケトン系等の有機溶剤に溶解したいわゆる溶剤系のものが一般的である。
【0003】
しかしながら、これらの有機溶剤系美爪料は、皮膜形成剤としての諸物性は優れているものの、有機溶剤を使用しているために、引火性、溶剤臭、人体への悪影響等の問題があり、さらに爪そのものへの悪影響において、改善すべき課題を有している。
【0004】
【発明が解決しようとする課題】
有機溶剤系の美爪料に代わるものとして、水性ポリマーエマルジョンなどを使用する水系美爪料が提案されている。しかしながらかような水系美爪料は、引火性、溶剤臭、人体への悪影響等といった有機溶剤系美爪料の有する課題を解消することができるものの、含有されている顔料が経時的に沈殿する傾向が見られ、色むらや分離等の現象が生じて製品の安定性に欠ける問題があった。
【0005】
そこで本発明は、経時的に顔料の沈殿が生ずることがなく、顔料混和安定性に優れた水系美爪料を提供することを目的としてなされたものである。
【0006】
【課題を解決するための手段】
すなわち本発明の顔料混和安定性に優れた水系美爪料は、イオン交換水に酸化チタンおよび顔料を分散させた後に、水性ポリマーエマルジョンを添加し、次いで他の成分を添加して均一に攪拌・混合することにより調製される水系美爪料において、上記酸化チタンを白色顔料として、平均粒子径が0.01〜0.15μmのアナターゼ型の酸化チタンを3〜5重量%含有させることを特徴とするものである。
【0007】
酸化チタンは白色顔料として従来から水系美爪料等に慣用されている。また、酸化チタンの結晶構造として代表的にはルチル型とアナターゼ型の2種類があることも知られている。
【0008】
本発明においては、これら2種類の結晶構造のうちの特にアナターゼ型の酸化チタンを白色顔料として水系美爪料に含有させることにより、酸化チタンによる色むらや酸化チタンの沈降などがみられない混和安定性に優れた水系美爪料を得ることができる。
【0009】
同じ酸化チタンでも、結晶構造の異なるルチル型のものを使用した場合には顔料の混和安定性が得られず、アナターゼ型の酸化チタンを使用した場合のみにかような効果が得られることは、全く予期し得ないものであった。
【0010】
【発明の実施の形態】
本発明で使用するアナターゼ型の酸化チタンは市販品として入手することができ、例えば「タイペークA−100」(石原産業(株)製)、「バイエルチタンA」、「バイエルチタンA−Z」(いずれもバイエル・ジャパン(株)より市販)等はアナターゼ型の酸化チタンである。酸化チタンの粒子径は平均粒子径で0.01〜0.15μm程度のものが好ましく使用できる。
【0011】
なお、市販の酸化チタンはAl、Si、Zn、Zrなどの含水酸化物や、シリコンやフッ素、脂肪酸、ポリアクリル酸アルキル等の有機物で表面処理が施されているものもあるが、本発明ではアナターゼ型の酸化チタンであれば、表面処理されているものでも使用することができる。
【0012】
アナターゼ型酸化チタンを含有する水系美爪料を調製するに際しては、皮膜形成剤となる水性ポリマーエマルジョンに直接アナターゼ型酸化チタンを添加、分散させてもよく、あるいはアナターゼ型酸化チタンを予め界面活性剤等を用いて水に分散させたものを水性ポリマーエマルジョンに添加してもよい。アナターゼ型酸化チタンの含有量は、水系美爪料全量に対して3〜5重量%の範囲とする。
【0013】
所望の色相の美爪料とするために、白色顔料としての酸化チタン以外に種々の顔料を着色剤として配合することができる。かような顔料としては、従来から水系美爪料の着色剤として慣用されている有機顔料や無機顔料がいずれも使用できる。
【0014】
本発明による水系美爪料の基本成分は、皮膜形成剤となる水性ポリマーエマルジョン、アナターゼ型酸化チタン、着色剤および水からなるものであるが、アナターゼ型酸化チタンによる顔料混和安定性の効果を損なわない範囲で、水系美爪料成分として一般に慣用されている成分、例えば油分、保湿剤、紫外線吸収剤、キレート剤、pH調整剤、消泡剤、レベリング剤、増粘剤、染料、顔料、香料、防腐剤、アクリル系樹脂やナイロン系樹脂等の樹脂粉末等を適宜配合することができる。増粘剤としては、例えばポリビニルアルコール、ポリビニルピロリドン、ポリアクリルアミド、ポリエチレンオキシド、メチルセルロース、ヒドロキシエチルセルロース、ヒドロキシプロピルメチルセルロース等の有機系増粘剤や、無機系のベントナイ卜等の水膨潤性粘土鉱物、ベーマイト等の含水酸化物、珪酸アルミニウムマグネシウム等の珪酸塩、無水珪酸等が使用できる。
【0015】
【実施例】
以下に実施例および比較例を挙げて本発明をさらに詳述する。
[実施例1〜4および比較例1〜4]
表1に示した組成に従い、イオン交換水に酸化チタンおよび顔料を分散させた後、水性ポリマーエマルジョンを添加し、次いで他の成分を添加して均一に攪拌・混合することにより、水系美爪料(水系ネイルエナメル)を調製した。
得られた水系ネイルエナメルそれぞれについて、下記の評価方法に従って、混和安定性の評価を行った。その結果も表1に併せて示す。なお、表中の各成分の数字は重量%を表す。
【0016】
<混和安定性の評価方法>
各試料をガラスびんに充填して、室温で3ヶ月間、および50℃で1ヵ月間放置し、色むら及び沈殿の状態を目視で観察し、以下の基準で評価した。
○:非常に良好(色むら及び沈殿が生じなかった)
△:良好(僅かに色むら及び沈殿が生じた)
×:不良(色むら及び沈殿が生じた)
【0017】
【表1】
【0018】
表1からわかるように、アナターゼ型酸化チタンを含有せしめた実施例1〜4の水系美爪料においてはいずれも色むらや沈殿は生じず非常に良好な顔料混和安定性を示していた。これに対して、同じ酸化チタンでもルチル型酸化チタンを含有せしめた比較例1〜4の水系美爪料では、必ずしも満足する結果は得られていない。
【0019】
【発明の効果】
以上の説明からわかるように、アナターゼ型の酸化チタンを白色顔料として水系美爪料に含有させることによって、酸化チタンによる色むらや酸化チタンの沈降などがみられない混和安定性に優れた水系美爪料を得ることができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water-based beauty nail material, and more particularly to a water-based beauty nail material having excellent pigment admixing stability that is less likely to cause color unevenness and precipitation over time.
[0002]
[Prior art]
Conventional nail polishes are made by adding film forming agents such as nitrocellulose and resins such as alkyd resins, sulfonamide resins, sucrose resins, acrylic resins, and other additives such as plasticizers and coloring materials. A so-called solvent type dissolved in an organic solvent such as an ester type or a ketone type is generally used.
[0003]
However, these organic solvent-based nail polishes have excellent physical properties as a film-forming agent, but have problems such as flammability, solvent odor, and adverse effects on the human body due to the use of organic solvents. In addition, there is a problem to be improved in the adverse effect on the nail itself.
[0004]
[Problems to be solved by the invention]
As an alternative to organic solvent-based beauty nails, water-based beauty nails that use aqueous polymer emulsions have been proposed. However, such water-based beauty nail can solve the problems of organic solvent-based beauty nail such as flammability, solvent odor, adverse effects on the human body, but the contained pigments precipitate over time. There was a problem that there was a tendency and the phenomenon of color unevenness and separation occurred and the product lacked stability.
[0005]
Therefore, the present invention has been made for the purpose of providing a water-based nail polish that does not cause pigment precipitation over time and has excellent pigment mixing stability.
[0006]
[Means for Solving the Problems]
In other words, the water-based beauty nail material having excellent pigment admixture stability according to the present invention is prepared by dispersing titanium oxide and pigment in ion-exchanged water, then adding an aqueous polymer emulsion, and then adding other components and stirring uniformly. In the water-based beauty nail preparation prepared by mixing, the titanium oxide is used as a white pigment, and 3 to 5 % by weight of anatase-type titanium oxide having an average particle diameter of 0.01 to 0.15 μm is contained. It is what.
[0007]
Titanium oxide is conventionally used as a white pigment in water-based beauty nails and the like. It is also known that there are typically two types of crystal structures of titanium oxide, a rutile type and an anatase type.
[0008]
In the present invention, an anatase-type titanium oxide of these two types of crystal structures is incorporated into an aqueous beauty nail material as a white pigment, so that no color unevenness due to titanium oxide or titanium oxide precipitation is observed. A water-based beauty nail material excellent in stability can be obtained.
[0009]
Even if the same titanium oxide is used with a rutile type having a different crystal structure, the mixing stability of the pigment cannot be obtained, and such an effect can be obtained only when anatase type titanium oxide is used. It was totally unexpected.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The anatase-type titanium oxide used in the present invention can be obtained as a commercial product. For example, “Taipeke A-100” (manufactured by Ishihara Sangyo Co., Ltd.), “Bayer Titanium A”, “Bayer Titanium A-Z” ( Both are commercially available from Bayer Japan Ltd.) and the like are anatase type titanium oxide. The average particle diameter of titanium oxide is preferably about 0.01 to 0.15 μm.
[0011]
Some commercially available titanium oxides are surface-treated with water-containing oxides such as Al, Si, Zn, and Zr, and organic substances such as silicon, fluorine, fatty acids, and polyalkyl acrylates. Any anatase-type titanium oxide can be used even if it is surface-treated.
[0012]
In preparing an aqueous nail polish containing anatase-type titanium oxide, anatase-type titanium oxide may be directly added to and dispersed in an aqueous polymer emulsion serving as a film-forming agent, or anatase-type titanium oxide may be used as a surfactant in advance. What is dispersed in water using the above may be added to the aqueous polymer emulsion. The content of the anatase-type titanium oxide is in the range of 3 to 5 % by weight with respect to the total amount of the water-based beauty nail material.
[0013]
In order to obtain a beauty nail having a desired hue, various pigments can be blended as a colorant in addition to titanium oxide as a white pigment. As such a pigment, any of organic pigments and inorganic pigments conventionally used as a colorant for aqueous beauty nails can be used.
[0014]
The basic components of the water-based nail polish according to the present invention are composed of an aqueous polymer emulsion as a film-forming agent, anatase-type titanium oxide, a colorant and water, but the effect of the pigment mixing stability by the anatase-type titanium oxide is impaired. Ingredients that are generally used as water-based beauty nail ingredients, such as oils, moisturizers, UV absorbers, chelating agents, pH adjusters, antifoaming agents, leveling agents, thickeners, dyes, pigments, and fragrances Further, preservatives, resin powders such as acrylic resins and nylon resins, and the like can be appropriately blended. Examples of the thickener include organic thickeners such as polyvinyl alcohol, polyvinylpyrrolidone, polyacrylamide, polyethylene oxide, methylcellulose, hydroxyethylcellulose, and hydroxypropylmethylcellulose, water-swelling clay minerals such as inorganic bentonite, and boehmite. Hydrous oxides such as silicates, silicates such as aluminum magnesium silicate, silicic anhydride and the like can be used.
[0015]
【Example】
Hereinafter, the present invention will be described in further detail with reference to Examples and Comparative Examples.
[Examples 1 to 4 and Comparative Examples 1 to 4]
In accordance with the composition shown in Table 1, after dispersing titanium oxide and pigment in ion-exchanged water, an aqueous polymer emulsion is added, and then other components are added, followed by uniform stirring and mixing. (Aqueous nail enamel) was prepared.
For each of the obtained aqueous nail enamels, the mixing stability was evaluated according to the following evaluation method. The results are also shown in Table 1. In addition, the number of each component in a table | surface represents weight%.
[0016]
<Method for evaluating mixing stability>
Each sample was filled in a glass bottle and allowed to stand at room temperature for 3 months and at 50 ° C. for 1 month. The color unevenness and precipitation were visually observed and evaluated according to the following criteria.
○: Very good (color unevenness and precipitation did not occur)
Δ: Good (slight color unevenness and precipitation occurred)
X: Defect (color unevenness and precipitation occurred)
[0017]
[Table 1]
[0018]
As can be seen from Table 1, in the water-based nail polishes of Examples 1 to 4 containing anatase-type titanium oxide, no color unevenness or precipitation occurred and very good pigment mixing stability was exhibited. On the other hand, the water-based beauty nail material of Comparative Examples 1 to 4 containing the same titanium oxide and containing the rutile type titanium oxide does not necessarily give satisfactory results.
[0019]
【The invention's effect】
As can be seen from the above description, by adding anatase-type titanium oxide as a white pigment to the water-based beauty nail material, water-based beauty with excellent mixing stability that does not cause uneven coloration or precipitation of titanium oxide due to titanium oxide. Nail material can be obtained.
Claims (1)
上記酸化チタンを白色顔料として、平均粒子径が0.01〜0.15μmのアナターゼ型の酸化チタンを3〜5重量%含有させることを特徴とする顔料混和安定性に優れた水系美爪料。In a water-based beauty nail preparation prepared by dispersing an aqueous polymer emulsion after dispersing titanium oxide and a pigment in ion-exchanged water, and then adding other components and stirring and mixing uniformly.
Water-based nail polish excellent in pigment mixing stability, characterized in that it contains 3 to 5 % by weight of anatase-type titanium oxide having an average particle size of 0.01 to 0.15 μm using the above-mentioned titanium oxide as a white pigment .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2000309137A JP4513198B2 (en) | 2000-10-10 | 2000-10-10 | Aqueous nail polish with excellent pigment admixture stability |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2000309137A JP4513198B2 (en) | 2000-10-10 | 2000-10-10 | Aqueous nail polish with excellent pigment admixture stability |
Publications (2)
Publication Number | Publication Date |
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JP2002114639A JP2002114639A (en) | 2002-04-16 |
JP4513198B2 true JP4513198B2 (en) | 2010-07-28 |
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JP2000309137A Expired - Lifetime JP4513198B2 (en) | 2000-10-10 | 2000-10-10 | Aqueous nail polish with excellent pigment admixture stability |
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Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2947898B2 (en) * | 1990-08-21 | 1999-09-13 | 花王株式会社 | Water based nail polish |
JP3426025B2 (en) * | 1994-03-30 | 2003-07-14 | ポーラ化成工業株式会社 | Cosmetics containing organic-inorganic composite pigments |
JPH08127513A (en) * | 1994-10-28 | 1996-05-21 | Pola Chem Ind Inc | Cosmetic |
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2000
- 2000-10-10 JP JP2000309137A patent/JP4513198B2/en not_active Expired - Lifetime
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