JP7456728B2 - 日焼け止め用の多層粒子 - Google Patents
日焼け止め用の多層粒子 Download PDFInfo
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- JP7456728B2 JP7456728B2 JP2019088920A JP2019088920A JP7456728B2 JP 7456728 B2 JP7456728 B2 JP 7456728B2 JP 2019088920 A JP2019088920 A JP 2019088920A JP 2019088920 A JP2019088920 A JP 2019088920A JP 7456728 B2 JP7456728 B2 JP 7456728B2
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
- A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
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- A61K2800/805—Corresponding aspects not provided for by any of codes A61K2800/81 - A61K2800/95
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Description
奇数の、高屈折率材料と低屈折率材料との交互層
を含む多層UV遮蔽剤粒子であって、
各層が、隣接層の屈折率とは少なくとも0.2異なる屈折率を有し、層の総数が少なくとも9であり、且つ粒子が基材を含有しない、
多層UV遮蔽剤粒子によって達成することができる。
基材を調製する工程と、
該基材上に犠牲層を調製する工程と、
該犠牲層上に、奇数の、高屈折率材料と低屈折率材料との交互層を堆積させて多層構造体を調製する工程と、
該多層構造体を犠牲層から引き離す工程と、
該多層構造体を微粉砕して多層UV遮蔽剤粒子を得る工程と
を含む、多層UV遮蔽剤粒子を調製する方法であって、
多層構造体中の各層が、隣接層の屈折率とは少なくとも0.2異なる屈折率を有し、多層構造体中の層の総数が少なくとも9である、
方法にも関する。
奇数の、高屈折率材料と低屈折率材料との交互層
を含む多層UV遮蔽剤粒子であって、
各層が、隣接層の屈折率とは少なくとも0.2異なる屈折率を有し、層の総数が少なくとも9であり、且つ粒子が基材を含有しない、
多層UV遮蔽剤粒子に関する。
本発明は、奇数の、高屈折率材料と低屈折率材料との交互層を含む多層UV遮蔽剤粒子であって、各層が、隣接層の屈折率とは少なくとも0.2異なる屈折率を有し、層の総数が少なくとも9であり、且つ粒子が基材を含有しない、多層UV遮蔽剤粒子を対象とする。
蒸着法によって形成された、奇数の、高屈折率材料と低屈折率材料との交互層を含む多層UV遮蔽剤材料であって、
各層が、隣接層の屈折率とは少なくとも0.2異なる屈折率を有し、層の総数が少なくとも9であり、且つ粒子が基材を含有しない、
多層UV遮蔽剤材料にも関する。
本発明はまた、本発明による多層UV遮蔽剤粒子を調製する方法にも関する。
基材を調製する工程と、
該基材上に犠牲層を調製する工程と、
該犠牲層上に、奇数の、高屈折率材料と低屈折率材料との交互層を堆積させて多層構造体を調製する工程と、
該多層構造体を該犠牲層から引き離す工程と、
該多層構造体を微粉砕して多層UV遮蔽剤粒子を得る工程と
を含み、
多層構造体中の各層は、隣接層の屈折率とは少なくとも0.2異なる屈折率を有し、多層構造体中の層の総数は、少なくとも9である。
本発明はまた、本発明による多層UV遮蔽剤粒子を含む組成物、好ましくは化粧用組成物にも関する。本発明による組成物は、粉末状組成物であることができ、例えば、コンパクト粉末又はプレス粉末、ブラッシャー又はルースパウダーの形態にある粉末状組成物、又は液状組成物、例えば、エマルション(O/W若しくはW/O形態)、水性ゲル、水性溶液、ローション、ミルキーローション、クリーム、泡、ペースト、セラムなど等の形態にある液状組成物であることができる。本発明による粒子は、組成物中でUV線を遮蔽するための活性成分として機能する。
本発明による粒子は、UV線をカットオフするための活性成分として使用することができる。したがって、本発明はまた、非治療的方法、例えば美容方法、又は多層UV遮蔽剤粒子の、UV線をカットオフするための活性成分としての使用にも関する。
Table 1(表1及び表2)に示す、実施例1~7(Ex.1~7)並びに比較例1及び2(Comp. Ex.1及び2)による以下の粒子を、以下の手順によって調製した。
(1)ガラスプレートを基材として調製した。
(2)該ガラスプレートの片側上にポリイミドテープを載置した。
(3)該ポリイミドフィルム上に、所定の数の、TiO2とSiO2との交互層を、真空蒸着法によって積層させて、フィルムの形態にある多層構造体を調製した。実施例1~7並びに比較例1及び2の各層の数をTable 1(表1及び表2)に記載する。
(4)得られた多層構造体を、ポリイミドテープを曲げることによって、該テープから引き離した。砕いた多層構造体の断片の全てを水で洗浄し、ろ過して回収した。
(5)引き離した多層構造体を、スパチュラでの粉砕によって微粉砕して、多層UV遮蔽剤粒子を得た。
(厚さの測定)
実施例1~7並びに比較例1及び2のそれぞれによる多層構造体の各層の厚さを、試料のそれぞれの断面を透過型電子顕微鏡(TEM)を用いて観察することにより、測定した。各試料を、集束イオンビーム(FIB)によってきわめて薄い断片へと切断して、試料を調製した。実施例1~7並びに比較例1及び2による各層の組成を、エネルギー分散X線分光分析(EDS)で確認した。
実施例1~7並びに比較例1及び2のそれぞれによる粒子1mgを、100μLのイオン交換水に分散させてサスペンションを得、該サスペンションの総量を、ピペットを用いてスライドガラス上に注いだ。スライドガラスを一晩乾燥させて水を除去し、粒子をスライドガラスの表面上に固定した。得られた試料のスポットは、約2cmの直径を有していた。該スポットの透過率を、積分球を用いる分光光度計(JASXO V-550)で測定した。「カットオフ遷移幅」を、透過率の示差曲線を算出し、ガウス最小二乗法を示差曲線に当てはめ、次いで、当てはめた曲線におけるピークの半値幅をガウス最小二乗法により測定することによって得、これは、図1及び本明細書で説明している通りである。
粒子のインビトロSPF値を、紫外線透過率分析器(Labsphere社 UV-2000S)を用いて測定した。
Claims (14)
- 奇数の、高屈折率材料と低屈折率材料との交互層
を含む多層UV遮蔽剤粒子であって、
各層が、隣接層の屈折率とは少なくとも0.2異なる屈折率を有し、層の総数が少なくとも9で最大60であり、且つ前記粒子が基材を含有せず、
前記高屈折率材料がTiO 2 であり、1.7超の屈折率を有し、前記低屈折率材料がSiO 2 であり、1.65未満の屈折率を有し、
前記高屈折率材料の層の厚さが3~100nmであり、前記低屈折率材料の層の厚さが10~150nmであり、
板状又は楕円形の形状である、粒子。 - 前記高屈折率材料が、1.8超の屈折率を有する、請求項1に記載の粒子。
- 前記低屈折率材料が、1.60未満の屈折率を有する、請求項1又は2に記載の粒子。
- 各層が、隣接層の屈折率とは少なくとも0.4異なる屈折率を有する、請求項1から3のいずれか一項に記載の粒子。
- 前記高屈折率材料の層の厚さが、4~80nmの範囲である、請求項1から4のいずれか一項に記載の粒子。
- 前記低屈折率材料の層の厚さが、20~130nmの範囲である、請求項1から5のいずれか一項に記載の粒子。
- 高屈折率材料と低屈折率材料との交互層のみで形成されている、請求項1から6のいずれか一項に記載の粒子。
- 前記層が、蒸着法によって形成されている、請求項1から7のいずれか一項に記載の粒子。
- 15nm以下のカットオフ遷移幅を呈する、請求項1から8のいずれか一項に記載の粒子。
- 基材を調製する工程と、
前記基材上に犠牲層を調製する工程と、
前記犠牲層上に、奇数の、高屈折率材料と低屈折率材料との交互層を堆積させて多層構造体を調製する工程と、
前記多層構造体を前記犠牲層から引き離す工程と、
前記多層構造体を微粉砕して多層UV遮蔽剤粒子を得る工程と
を含む、請求項1から9のいずれか一項に記載の多層UV遮蔽剤粒子を調製する方法であって、
前記多層構造体中の各層が、隣接層の屈折率とは少なくとも0.2異なる屈折率を有し、前記多層構造体中の層の総数が少なくとも9で最大60である、方法。 - 前記堆積させる工程が、蒸着法を用いて行われる、請求項10に記載の方法。
- 活性成分として、請求項1から9のいずれか一項に記載の粒子を含む、皮膚、頭皮、爪、唇、及び毛髪から選択されるケラチン物質のための局所的使用のための組成物。
- 粉末状組成物又は液状組成物の形態にある、請求項12に記載の組成物。
- 請求項1から9のいずれか一項に記載の多層UV遮蔽剤粒子の、UV線をカットオフするための活性成分としての、美容上の使用。
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CN202080033549.4A CN113766907A (zh) | 2019-05-09 | 2020-05-07 | 遮光剂多层粒子 |
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WO2006063949A1 (en) | 2004-12-15 | 2006-06-22 | Ciba Specialty Chemicals Holding Inc. | Process of using microwave deposition of metal oxide onto an organic substrate |
WO2009126722A1 (en) | 2008-04-11 | 2009-10-15 | Kobo Products Inc. | Process for making large particles with nano optical sunscreen properties |
WO2014150846A1 (en) | 2013-03-15 | 2014-09-25 | Basf Se | Uv reflecting pigments, and method of making and using the same |
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US4168986A (en) * | 1978-07-03 | 1979-09-25 | Polaroid Corporation | Method for preparing lamellar pigments |
JP3986304B2 (ja) | 2001-12-06 | 2007-10-03 | 株式会社日本色材工業研究所 | 積層型干渉性紫外線遮蔽顔料及びそれを配合した化粧料 |
JP2014000811A (ja) | 2012-06-20 | 2014-01-09 | Toyota Motor Engineering & Manufacturing North America Inc | 独立多層薄フィルムの製造方法 |
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- 2020-05-07 CN CN202080033549.4A patent/CN113766907A/zh active Pending
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Patent Citations (3)
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WO2006063949A1 (en) | 2004-12-15 | 2006-06-22 | Ciba Specialty Chemicals Holding Inc. | Process of using microwave deposition of metal oxide onto an organic substrate |
WO2009126722A1 (en) | 2008-04-11 | 2009-10-15 | Kobo Products Inc. | Process for making large particles with nano optical sunscreen properties |
WO2014150846A1 (en) | 2013-03-15 | 2014-09-25 | Basf Se | Uv reflecting pigments, and method of making and using the same |
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JP2020200239A (ja) | 2020-12-17 |
WO2020226184A3 (en) | 2021-01-07 |
US20220211588A1 (en) | 2022-07-07 |
EP3966289A2 (en) | 2022-03-16 |
WO2020226184A2 (en) | 2020-11-12 |
CN113766907A (zh) | 2021-12-07 |
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