JP2554522C

JP2554522C -

Info

Publication number: JP2554522C
Authority: JP
Publication date: 1999-09-20

Description

【発明の詳細な説明】〔産業上の利用分野〕本発明は新規な美爪料に関する。さらに詳しくは有機変性モンモリロナイト、
シリカ及び非芳香族系溶剤を配合した美爪料に関する。すなわち、本発明は人体に安全で顔料やパール剤の沈降がなく、経時安定性に
優れ、しかも塗膜物性、使用性の良好な美爪料に関する。〔従来の技術〕従来から、美爪料において有機変性モンモリロナイトを配合し、このものの粘
土鉱物に由来する良好なチキソトロピー付与性を利用して顔料やパール剤の沈降
を防ぐことが行われ、そして、この場合に溶剤としてトルエン、キシレン等の芳
香族炭化水素溶剤が使用されてきた。トルエン等の芳香族炭化水素系溶剤は、該
クレーを膨潤させ最も良好なゲルを構築し、このようなゲルを含む美爪料は比較
的良好な分散安定性を示し経時的に沈降、分離することがないため、トルエン等
はこの種美爪料の溶剤として不可欠なものとされていた。又、疎水性シリカを配
合し分散安定性、経時安定性を更に改良した例（特開昭６２−１７４００３）が
あるが、これらはトルエンが必須のゲル組成物を使用するため、必然的に美爪料
にもトルエンが含有されている。一方トルエン、キシレン等の芳香族炭化水素溶
剤を含有しない美爪料用ゲル組成物として、水酸基含有極性物質とフェニル基含
有有機シリコン化合物を特定配合した例（特公昭６１−００１０４４号）があり
人体に安全な美爪料についての技術が確立している。〔発明が解決しようとしている課題〕トルエン、キシレン等芳香族炭化水素溶剤は人体への安全性上の問題があり、
特に美爪料を頻繁に使用した場合、爪に損傷や痛みを与える懸念のあることが知
られている。又、トルエン、キシレン等を全く含有しないとする特公昭６１−０
０１０４４号は人体に安全でチキソトロピー性を付与し、分散安定性、経時安定
性もやや良好ではあったが、安定性面では更なる改良の余地が残されていた。本発明者らは、このような状況に鑑み、人体に安全で分散安定性、経時安定性
に非常に優れ、しかも塗膜物性、使用性に優れた美爪料を開発すべく鋭意検討を
重ねた結果、有機変性モンモリロナイト、シリカ、及び非芳香族系溶剤を必須に
含有する、人体に安全で、顔料やパール剤の沈降がなく、経時安定性に優れ、し
かも塗膜物性、使用性の良好な美爪料を見出し本発明を完成させるに至った。〔課題を解決するための手段〕即ち、本発明は有機変性モンモリロナイト、シリカ、及び非芳香族系溶剤を必
須として含有する美爪料を提供するものである。これまで使用されていたトルエ
ン、キシレン等の芳香族炭化水素溶剤やフェニル基含有有機シリコン等は該クレ
ーを膨潤させ、チキソトロピー性を付与する物質であった。しかし、本発明はト
ルエン、キシレン等をまったく使用せず、人体に安全な非芳香族系溶剤を用い有
機変性モンモリロナイトとシリカの相互作用により優れたチキソトロピー性を付
与し、大きな目的を達成している。以下に本発明の構成についてのべる。本発明で用いられる有機変性モンモリロナイトは、粘土鉱物であるモンモリロ
ナイトに第４級アンモニウム塩型のカチオン活性剤、及び非イオン性の高級有機
極性化合物を化学的に結合させた物質であって、市販品として例えばベントン（
ナショナルレッド社製のベントン２７、ベントン３４、ベントン３８等）が挙げ
られ、何れも利用できる。これらは必要に応じて任意に選択でき、１種または２
種以上を配合することができる。これら成分の好ましい配合量は 0.2〜3.0 重量
％であり、さらに好ましくは 0.8〜2.0 重量％である。0.2重量％未満では良好
なチキソトロピー性が得られず、3.0 量％を越えると美爪料の塗膜の光沢や経時
のもち（ハガレ）が悪くなる。本発明で用いられるシリカは周知のものでよく例えば、市販品としてはアエロジル＃２００、アエロジル＃３００、アエロジル＃３８０、或いはアエロジルＲ
９７２等が挙げられる。これらの中でもアエロジル＃２００、アエロジル＃３０
０、アエロジル＃３８０等の粒径が0.01μ未満のものがチキソトロピー性の点で
好ましい。これら成分の好ましい配合量は 0.1〜2.0 重量％であり、さらに好ましくは 0
.5〜1.5 重量％である。0.1重量％未満では良好なチキソトロピー性が得られず
経時安定性が悪くなる。2.0 重量％を越えると、使用性においてエナメル塗膜の
光沢が悪く経時の持ちも劣ってくる。本発明で用いられる非芳香族系溶剤とは、トルエン、キシレン等の芳香族炭化
水素以外の有機溶剤を広く指称し、例えば酢酸ｎブチル、酢酸イソブチル、酢酸
エチル、メチルエチルケトン、アセトン、ｎブタノール、イソプロピルアルコー
ル、エチルアルコール等である。これら溶剤の１種または２種以上を配合するこ
とができる。これら成分の好ましい配合量は60〜85重量％である。更に本発明の美爪料には、上記必須成分以外に通常美爪料に使用される被膜形
成剤、樹脂、可塑剤、顔料、パール剤等が配合され、また、紫外線吸収剤、保湿
剤、薬剤、香料、そして水分等も適量配合することができる。もちろん、これら
は本発明の目的を損なわない質的、量的条件下で使用されなければならない。〔発明の効果〕本発明は人体に安全で顔料やパール剤の沈降がなく経時安定性に優れ、しかも
、塗膜物性、使用性の良好な美爪料に関する。従来技術のトルエン、キシレン等
の芳香族炭化水素系溶剤を使用したものに比べて、人体に対する安全性が高く爪
の損傷や痛みを与えることが極めて少なく、経時のもちの点でも優れている。ま
た、トルエン、キシレン等の芳香族炭化水素系溶剤を含有しない美爪料に比べて
もパール剤の沈降、経時安定性、塗膜物性、使用性の点で更に優れた品質となっ
ている。〔実施例〕以下、実施例によって本発明を詳細に説明する。配合量は重量％である。実施例に先立ち、効果試験方法及び評価方法について詳述する。粘度ＢＬ型粘度計ローターNo.2、６rpm、30℃、１分間測定。経時安定性美爪料を容器に充填し経時の沈殿、及び分離を肉眼で観察する。 ◎ 沈殿、分離が全く認められない。 ○ 沈殿、分離が僅かに認められる。 ○ 沈殿、分離が認められる。 △ 沈殿、分離が非常に認められる。塗膜の光沢実際の使用において官能で評価 ◎ 非常に光沢がある。 ○ やや光沢がある。 ○ やや光沢がない。 △ 光沢がない。 × 全く光沢がない。経時のもち（ハガレ）実際の使用（３日間）において官能で評価。 ◎ 非常にもちが良い。 ○ ややもちが良い。 ○ ややもちが悪い。 △ もちが悪い。 × 非常にもちが悪い。人体への安全性（爪の異常）実際の使用において官能で評価。ｎ＝５０ ◎ 爪の異常を認めた人３未満 ○ 爪の異常を認めた人３〜５ ○ 爪の異常を認めた人６〜10 △ 爪の異常を認めた人 11〜15 × 爪の異常を認めた人 16以上実施例１、２、比較例１表−１に示す組成で常法により、美爪料を製造し、それぞれの品質評価を行っ
た。表−１から明らかなように実施例１、２は人体に安全で顔料やパール剤の沈降
がなく経時安定性に優れ、しかも、塗膜物性、使用性が良好であることが判る。
これに対しトルエン及びシリカを配合した美爪料（比較例１）は安定性では優れ
ているものの、経時のもち、人体への安全性の点で劣り、爪への異常が認められ
ている。実施例３〜５表−２に示す組成で常法により、美爪料を製造し、それぞれの品質評価を行っ
た。表−２から明らかなように実施例３〜５の美爪料は、人体に安全で、顔料やパ
ール剤の沈降がなく、経時安定性に優れ、しかも塗膜物性、使用性が非常に優れ
ていた。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a novel beauty nail preparation. More specifically, organically modified montmorillonite,
The present invention relates to a nail enamel containing silica and a non-aromatic solvent. In other words, the present invention relates to a nail polish that is safe for the human body, has no sedimentation of pigments and pearls, has excellent stability over time, and has good coating film properties and usability. (Prior art) Conventionally, an organically modified montmorillonite is blended in a nail enamel, and the sedimentation of pigments and pearling agents is prevented by utilizing the good thixotropy imparting property derived from the clay mineral of this product, and In this case, an aromatic hydrocarbon solvent such as toluene or xylene has been used as the solvent. Aromatic hydrocarbon solvents such as toluene swell the clay to form the best gel, and nail polish containing such a gel shows relatively good dispersion stability and sediments and separates over time. For this reason, toluene and the like have been considered to be indispensable as a solvent for this kind of nail polish. Also, there is an example in which hydrophobic silica is blended to further improve the dispersion stability and the stability over time (Japanese Patent Application Laid-Open No. Sho 62-174003). However, since these use a gel composition in which toluene is essential, they are inevitably beautiful. Nail material also contains toluene. On the other hand, there is an example (Japanese Patent Publication No. 61-001044) in which a hydroxyl group-containing polar substance and a phenyl group-containing organosilicon compound are specially blended as a gel composition for nail pills that does not contain an aromatic hydrocarbon solvent such as toluene and xylene. The technology about safe nail polish is established. [Problems to be Solved by the Invention] Aromatic hydrocarbon solvents such as toluene and xylene have a problem in safety to the human body,
It is known that frequent use of a beautiful nail material may cause damage or pain to the nail. Also, Japanese Patent Publication No. Sho 61-0, which does not contain any toluene, xylene, etc.
01044 is safe for humans and imparts thixotropy, and has a relatively good dispersion stability and stability over time, but leaves room for further improvement in stability. In view of such circumstances, the present inventors have intensively studied to develop a nail polish that is safe for the human body, has excellent dispersion stability and stability over time, and has excellent coating properties and usability. As a result, it contains organically modified montmorillonite, silica, and non-aromatic solvents, is safe for the human body, has no sedimentation of pigments and pearling agents, has excellent stability over time, and has good coating properties and usability. We found a beautiful nail material and completed the present invention. [Means for Solving the Problems] That is, the present invention is to provide a nail polish that contains organically modified montmorillonite, silica, and a non-aromatic solvent as essential components. Conventionally used aromatic hydrocarbon solvents such as toluene and xylene, phenyl group-containing organic silicon, and the like are substances that swell the clay and impart thixotropy. However, the present invention does not use toluene, xylene, etc. at all, and uses a non-aromatic solvent that is safe for the human body to impart excellent thixotropic properties to the interaction between organically modified montmorillonite and silica, thereby achieving a great object. . Hereinafter, the configuration of the present invention will be described. The organically modified montmorillonite used in the present invention is a substance obtained by chemically binding a quaternary ammonium salt type cationic activator and a nonionic higher organic polar compound to montmorillonite, which is a clay mineral, and is a commercially available product. For example, Benton (
Benton 27, Benton 34, Benton 38, etc., manufactured by National Red Co., Ltd.), and any of them can be used. These can be arbitrarily selected as necessary, and one or two
More than one species can be blended. The preferred compounding amount of these components is 0.2 to 3.0% by weight, more preferably 0.8 to 2.0% by weight. If the amount is less than 0.2% by weight, good thixotropy cannot be obtained, and if the amount exceeds 3.0% by weight, the glossiness and aging of the coating film of the nail polish become poor. The silica used in the present invention may be a well-known silica. For example, commercially available products include Aerosil # 200, Aerosil # 300, Aerosil # 380, and Aerosil R.
972 and the like. Among these, Aerosil # 200, Aerosil # 30
Particles having a particle size of less than 0.01 μm, such as 0 or Aerosil # 380, are preferred from the viewpoint of thixotropic properties. The preferred amount of these components is 0.1 to 2.0% by weight, more preferably 0 to 2.0% by weight.
.5 to 1.5% by weight. If the amount is less than 0.1% by weight, good thixotropy cannot be obtained, and the stability over time deteriorates. When the content exceeds 2.0% by weight, the gloss of the enamel coating film is poor in the usability and the durability over time is poor. The non-aromatic solvent used in the present invention broadly refers to organic solvents other than aromatic hydrocarbons such as toluene and xylene, for example, n-butyl acetate, iso-butyl acetate, ethyl acetate, methyl ethyl ketone, acetone, n-butanol, isopropyl Alcohol, ethyl alcohol and the like. One or more of these solvents can be blended. The preferred compounding amount of these components is 60 to 85% by weight. Furthermore, in addition to the above essential components, the nail polish of the present invention is blended with a film-forming agent, a resin, a plasticizer, a pigment, a pearling agent, etc. which are usually used in the nail enamel, and also an ultraviolet absorber, a humectant, Drugs, fragrances, water and the like can also be added in appropriate amounts. Of course, they must be used under qualitative and quantitative conditions that do not impair the purpose of the present invention. [Effects of the Invention] The present invention relates to a nail enamel that is safe for the human body, has no sedimentation of pigments and pearling agents, has excellent stability over time, and has good coating properties and usability. Compared to the prior art using an aromatic hydrocarbon solvent such as toluene and xylene, the safety to the human body is high, the damage to the nails and the pain are very small, and the aging is excellent. In addition, the quality of the pearl agent is more excellent in terms of sedimentation, stability over time, physical properties of the coating film, and usability as compared with a nail polish which does not contain an aromatic hydrocarbon solvent such as toluene and xylene. EXAMPLES Hereinafter, the present invention will be described in detail with reference to examples. The compounding amount is% by weight. Prior to the examples, an effect test method and an evaluation method will be described in detail. Viscosity BL type viscometer rotor No.2, 6 rpm, 30 ° C, measured for 1 minute. Temporal stability nail enamel filled in a container over time of precipitation, and observing the separation with the naked eye. ◎ No precipitation or separation was observed. ○ Precipitation and separation are slightly observed. ○ Precipitation and separation are observed. Δ: Precipitation and separation were extremely observed. The gloss of the coating film is evaluated organoleptically in actual use. ◎ Very glossy. ○ Somewhat glossy. ○ There is no gloss. △ No gloss. × No gloss. Moisture over time (peeling) Sensory evaluation in actual use (3 days). ◎ Very good. ○ Somewhat good. ○ Somewhat bad. △ Stickiness is bad. × Very bad. Safety to the human body (abnormal nails) Sensory evaluation in actual use. n = 50 ◎ Nail abnormalities less than 3 ○ Nail abnormalities 3-5 ○ Nail abnormalities 6-10 △ Nail abnormalities 11-15 × Nail abnormalities 16 or more Examples 1 and 2 and Comparative Example 1 A nail polish was manufactured by a conventional method using the composition shown in Table 1, and the quality of each product was evaluated. As is evident from Table 1, Examples 1 and 2 are safe for human bodies, have no sedimentation of pigments and pearling agents, are excellent in stability over time, and have good coating film properties and usability.
On the other hand, the nail polish containing toluene and silica (Comparative Example 1) is excellent in stability, but is inferior in aging and safety to the human body, and abnormality in nails is recognized. Examples 3 to 5 With the compositions shown in Table 2, nail polish was produced by a conventional method, and the quality of each nail was evaluated. As is evident from Table 2, the nail polish of Examples 3 to 5 is safe for the human body, has no sedimentation of pigments and pearling agents, has excellent stability over time, and has excellent coating film properties and usability. I was

Claims

Claims: Organically modified montmorillonite 0.2-3.0% by weight , imparts thixotropic properties
It contains silica 0.5-1.5% by weight and 60 to 85 wt% solvent nonaromatic that
And a nail polish that does not contain an aromatic solvent .