JP5643091B2 - 変性された金属酸化物のナノ粒子分散液の調製方法 - Google Patents
変性された金属酸化物のナノ粒子分散液の調製方法 Download PDFInfo
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- JP5643091B2 JP5643091B2 JP2010522909A JP2010522909A JP5643091B2 JP 5643091 B2 JP5643091 B2 JP 5643091B2 JP 2010522909 A JP2010522909 A JP 2010522909A JP 2010522909 A JP2010522909 A JP 2010522909A JP 5643091 B2 JP5643091 B2 JP 5643091B2
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- metal oxide
- polymer
- coupling agent
- aqueous solvent
- nanoparticle dispersion
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- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/205—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase
- C08J3/2053—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase the additives only being premixed with a liquid phase
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J3/28—Treatment by wave energy or particle radiation
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Description
i)非水性溶媒中の金属酸化物のナノ粒子分散液と少なくとも1つのカップリング剤とを合して、非水性溶媒中の、変性された金属酸化物のナノ粒子分散液を形成すること;
ii)非水性溶媒中の、変性された金属酸化物のナノ粒子分散液と少なくとも1つのポリマーとを合すること;及び
iii)前記非水性溶媒を除去してポリマー組成物を形成すること;
を含んでいる。第2の態様において、本調製方法は、下記の工程:
i)非水性溶媒中の金属酸化物のナノ粒子分散液と少なくとも1つのカップリング剤とを合して、非水性溶媒中の、変性された金属酸化物のナノ粒子分散液を形成すること;
ii)非水性溶媒中の、変性された金属酸化物のナノ粒子分散液と少なくとも1つのモノマーとを合して、重合性組成物を形成すること;
iii)前記非水性溶媒を除去すること;及び
iv )前記重合性組成物を重合させてポリマー組成物を形成すること;
を含んでいる。上記した両方の態様において、カップリング剤は、1.48以上の屈折率を有している。別法によれば、あるいはさらに加えて、ポリマー組成物は、1.5以上の屈折率を有している。好ましくは、ポリマー組成物は透明である。本発明はさらに、本願明細書に記載の方法によって調製された、ポリマー中に分散せしめられた変性ナノ粒子を含むポリマー組成物に関する。
本例では、本発明の方法を使用して、ナノ粒子金属酸化物及びポリマーを含むポリマー組成物を調製することについて説明する。
前記例1に記載の手法を使用して、3.9体積%のBaTiO3、1.9体積%のEthfac161及び95体積%のPMM0021を含む本発明のポリマー組成物を調製した。この組成物の屈折率は、1.556であることがわかった。この組成物のサンプルをガラス瓶の底に置き、約5cm2の表面積及び側面計で測定して約150〜200ミクロンの厚さをもった薄膜(フィルム)を形成した。この薄膜は透明であり、わずかに黄色を有していた。
前記例1に記載の手法を使用して、3.9体積%のBaTiO3、1.9体積%のEthfac161及び95体積%のPMM0021を含む本発明のポリマー組成物を調製した。この組成物のサンプルをガラス瓶の底に置き、約5cm2の表面積及び約200ミクロンの厚さをもった薄膜を形成した。この薄膜は透明であり、わずかに黄色を有していた。
Claims (14)
- ポリマー中に分散せしめられた変性ナノ粒子を含むポリマー組成物を調製する方法であって、下記の工程:
i) 非水性溶媒中の金属酸化物の前駆体を加水分解して、非水性溶媒中の金属酸化物のナノ粒子分散液であって、前記ナノ粒子の平均粒径が、動的光散乱又は小角X線散乱(SAXS)を使用して測定したとき、50nm未満である非水性ナノ粒子分散液を形成すること;
ii)非水性溶媒中の金属酸化物のナノ粒子分散液と少なくとも1つのカップリング剤とを合して、非水性溶媒中の、変性された金属酸化物のナノ粒子分散液を形成することであって、前記カップリング剤は、前記金属酸化物と反応もしくは相互に作用してナノ粒子分散液を形成するか、該カップリング剤が分散せしめられた媒体と反応もしくは相互に作用し得るもの;
iii)非水性溶媒中の、変性された金属酸化物のナノ粒子分散液と少なくとも1つのポリマーとを合すること;及び
iv)前記非水性溶媒を除去してポリマー組成物を形成すること;
を含み、前記カップリング剤が1.48以上の屈折率を有している、ポリマー組成物の調製方法。 - 前記カップリング剤が1.6以上の屈折率を有している、請求項1に記載の方法。
- 前記金属酸化物及び前記カップリング剤を、金属酸化物とカップリング剤の重量比を1:4〜100:1として合する、請求項1に記載の方法。
- 前記金属酸化物が1.8以上の屈折率を有している、請求項1に記載の方法。
- 前記金属酸化物がチタン酸塩である、請求項1に記載の方法。
- 前記金属酸化物がルチル型チタニアである、請求項1に記載の方法。
- 前記金属酸化物がチタン酸バリウムである、請求項1に記載の方法。
- 非水性溶媒中のナノ粒子分散液において、前記金属酸化物が2〜15nmの粒径を有している、請求項1に記載の方法。
- 非水性溶媒中のナノ粒子分散液において、前記変性金属酸化物が2〜15nmの粒径を有している、請求項1に記載の方法。
- 前記カップリング剤が、少なくとも1つの金属含有基、少なくとも1つのカルボン酸基、少なくとも1つのスルフィン酸基、少なくとも1つのスルホン酸基、少なくとも1つのチオール基、少なくとも1つの燐含有基を含む、請求項1に記載の方法。
- 前記カップリング剤がポリマーと相互に反応可能な基を含み、ポリマーと相互に反応可能な前記の基が、次式により表されるポリアルキレンオキシド基:
−(O−ALK1)x−(O−ALK2)y−(O−ALK3)z−
(式中、ALK1、ALK2及びALK3は、直鎖もしくは分岐鎖のC1〜C8アルキレン基であり、xは1〜10であり、y及びzは0〜10である)を含む、請求項1に記載の方法。 - 前記ポリマー組成物が1.5以上の屈折率を有している、請求項1に記載の方法。
- 前記ポリマー組成物が透明である、請求項1に記載の方法。
- 前記ポリマーは、前記ポリマー組成物の全重量を基準にして5〜50重量%の量で存在している、請求項1に記載の方法。
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