JP6704915B2 - 対象の活性成分の放出を行う成形機能性セルロース物品の製造方法 - Google Patents
対象の活性成分の放出を行う成形機能性セルロース物品の製造方法 Download PDFInfo
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- JP6704915B2 JP6704915B2 JP2017530710A JP2017530710A JP6704915B2 JP 6704915 B2 JP6704915 B2 JP 6704915B2 JP 2017530710 A JP2017530710 A JP 2017530710A JP 2017530710 A JP2017530710 A JP 2017530710A JP 6704915 B2 JP6704915 B2 JP 6704915B2
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- cellulose
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- lipophilic
- layered silicate
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Images
Classifications
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Description
a)公知の水性直接溶媒、例えば、NMMO、イオン性液体、若しくは場合により、列挙した直接溶媒を用いた有機液体の混合物、又はDMAc/LiCl中にパルプを分散することと、
b)前記方法の別工程において、場合により有機修飾され、又はより高周期のアルカリ及び/又はアルカリ土類金属イオン(例えば、K+、Ca2+、Al3+イオン)、若しくは水を用いたイオン交換により事前活性化されたナノスケールの層状ケイ酸塩を、Ultraturrax中で直接溶媒の水溶液を用いて均質化して、剪断速度(紡糸速さ)及び剪断時間の調整によって、定義された程度まで完全に又は部分的に剥離し、かつ、完成紙料に添加して、そしてセルロース完成紙料と混合することと、
c)前記方法の更なる別工程において、必要な場合は加熱することによって流動性の状態にされた活性物質包含親油性物質、又は活性物質包含W/Oエマルジョンを有機又は無機増粘剤によって安定化し、かつゲル状ペーストに変換し、同様にこのペーストをセルロース完成紙料に添加し、かつ、撹拌下で130℃以下の溶剤依存温度で混合することと、
d)その後、更なる蒸留を行って、セルロースを完全に溶解することと、及び
e)得られた紡糸溶液を、公知の溶液紡糸プロセスの1つによって、例えば、ステープル繊維、フィラメント、フィルム又はダイレクトウェブなどの成形物品に成形し、場合により公知のプロセスの1つによって後処理し、紡糸を終了し、そして乾燥することと、
を含む多段階方法による本発明によって解決される。活性物質包含親油性物質は、活性成分と親油性マトリックス材料との混合物を意味するものとする。活性物質包含W/Oエマルションは、水又は親水性溶媒に溶解した親水性活性物質を、親油性マトリックスだけでなく親油性活性物質も「包まれる」ことを可能にする。また、W/Oエマルジョンが親油性マトリックス中にもう一度「包まれる」プロセスも存在する。
− 原理的には、層状ケイ酸塩中の有機陽イオンの化学構造及び濃度と、
− 挿入されたイオンのサイズ又は非有機修飾層状ケイ酸塩の膨張の程度と、
− 工程b)及びc)において、温度、周囲の媒体の粘度(使用される分散剤、湿度、及び安定化された活性成分混合物中に使用される炭化水素)、並びに層状ケイ酸塩の混合/剪断の強度及び持続時間と、及び
− 工程b)〜d)において、周囲の媒体のレオロジー特性(それ故に、溶解工程におけるセルロース溶解の完全性も)、温度、並びに、同様に剪断の強度及び周期と、
によって影響を及ぼされ得る。
i)それらが、巨視的な量の試料を調べるが、試料は数グラムしか必要としないことと、及び
ii)それらが、物理化学的標準手段であり、かつ、実験的にWAXS又はTEMよりも負担が少ないことと、
の少なくとも2つの重要な利点を提供する。
2.265kgのコットンリンターパルプ(DP:618)及び114gのプロピルガラートを、21.000kgの60%水性NMMO溶液と混合し、混合物を撹拌タンクに送る。完成紙料を50min−1における撹拌よって、混ぜながら、40mbarの真空中、50℃の温度において約5リットルの水を除去する。同時に、2.242kgの80%水性NMMO溶液及び364.5gの層状ケイ酸塩(モンモリロナイト中に天然に存在するメチル−タロービス(2−ヒドロキシエチル)アンモニウム陽イオンで交換されることによって修飾されたモンモリロナイト=Southern ClayのCloisite(登録商標)30B Nanoclay)を、25000min−1において30分間、Ultra Turraxによる剪断で分散して、そして完成紙料に添加する。完成紙料バッチを、高粘度の塊が形成されるまで、20mbarの真空中、50min−1、100℃でさらに撹拌する。次いで、高粘度の塊に、厳しいUltraTurrax剪断下で別に製作された135gの月見草油、545gのn−オクタデカン、及び91.1gのヒュームドシリカ(Aerosil(登録商標)R106)の分散液を添加し、全ての成分について均質な分配が達成されるまで、混合物全体を100℃、かつ20mbar下でさらに撹拌する。剪断流動化指数は、−0.86(図1の曲線d))として決定された。最終的な紡糸ドープを移動した後、乾湿式紡糸プロセス(120μmダイオリフィス、20mmエアギャップ)を使用して、2.2dtex及び60mm切断長の繊度を有するステープル繊維を製作する。
実施例1に記載したように製造した完成紙料に、135gの月見草油、545gのn−ドデカン、及び91.1gのヒュームドシリカ(Aerosil R 106)の分散液を、それ以外は変更しない手段で添加した。混合物の剪断流動化指数は=−0.56(図1の曲線b))であり、その後さらに、混合物を実施例1と同様にしてさらに処理し、かつ成形する。得られたステープル繊維を使用して、実施例1のように、同じ組成物及び同じ坪量のウェブを製造した。
実施例1に記載したように製造した完成紙料に、同時に製作された2.242kgの80%水性NMMO溶液、及び364.5gの層状ケイ酸塩(Cloisite(登録商標)30B)の分散液を加え、その後大体10分間UltraTurrax分散し、さらに実施例1と同様に加工した。溶液の剪断流動化指数は、−0.67(図1の曲線c))であった。
実施例1に記載したように調製した完成紙料に、135gのα−トコフェロール、545gのパーム核油、及び91.1gのヒュームドシリカの分散液を、それ以外は変更しない手段で添加した。混合物の剪断流動化指数は−0.13であり、その後、混合物を実施例1と同様にしてさらに処理し、かつ成形する。得られたステープル繊維を使用して、実施例1のように、同じ組成物及び同じ坪量のウェブを製造した。
実施例1に記載したように調製した完成紙料に、135gのW/Oエマルジョン(尿素、カカオバター、ウールワックスアルコール)、545gのn−オクタデカン、及び91.1gのヒュームドシリカ(HDK(登録商標)N 20)の分散液を、それ以外は変更しない手段で添加した。剪断流動化指数を−0.04(図1の曲線a))と決定した。その後、混合物を実施例1と同様にしてさらに処理し、かつ成形する。得られたステープル繊維を使用して、30%の機能性繊維及び70%のコットンの糸を製作し、細かい円形の編み物にさらに加工した。
Claims (12)
- 活性成分の放出を制御することを特徴とする成形セルロース物品の製造方法であって、前記方法が:
a)セルロース完成紙料を形成するセルロース用の水性直接溶媒中にパルプを分散し、
b)前記方法の別工程において、場合により有機修飾され、又はカリウム、カルシウム、若しくはアルミニウムイオンを用いたイオン交換により事前活性化されたナノスケールの層状ケイ酸塩を、セルロース用の水性直接溶媒を用いて均質化して、剪断によって完全に又は部分的に剥離し、かつ、前記セルロース完成紙料に添加して、そしてそれらと混合し、
c)前記方法の更なる別工程において、活性成分及び活性成分を包含する親油性マトリックス材料、又は活性物質包含油中水型エマルジョンの組成物を、有機又は無機増粘剤によって固定して、ゲル状のペーストに変換し、同様にこのペーストをセルロース完成紙料に添加し、かつ、撹拌下で130℃以下の温度でそれと共に混合し、
d)前記セルロースが完全に溶解するまで、前記混合物から水を除去し、及び
e)得られた紡糸溶液を成形し、溶液紡糸プロセスによって成形物品に後処理し、場合により紡糸を終了し、そして乾燥する、
段階を含み、
前記セルロース用の直接溶媒が、水性N−メチルモルホリンN−オキシド溶液、水包含イオン性液体、さらに有機溶媒を包含しても良い水包含イオン性液体、又はジメチルアセトアミド(DMAc)と塩化リチウムとの溶液である、
セルロース物品の製造方法。 - 前記有機修飾層状ケイ酸塩が、14個以上の炭素原子、好ましくは14〜20個の炭素原子の長鎖の分岐していないアルキル、及び/又はアルケニル部分を少なくとも一つ有するアンモニウム陽イオンよって修飾された合成層状ケイ酸塩であり、前記アルキル又はアルケニル部分が、特別には一以上のヒドロキシ又はカルボキシ基で置換しても良いことを特徴とする、請求項1に記載の方法。
- 前記成形セルロース物品、好ましくは機能性セルロース繊維中の一以上の有機修飾層状ケイ酸塩の割合が、セルロースの全重量に基づいて、0.5〜20wt%、好ましくは5〜15wt%であることを特徴とする、請求項1又は2に記載の方法。
- 前記活性成分が、固体又は液体の親油性活性物質であり、月見草油、セイヨウオトギリ草油、ホホバ油、アボガド油、ビタミンA、レチノール、ビタミンD、若しくはビタミンEなどの脂溶性ビタミン及びプロビタミン、W/Oエマルジョン、又は無極性若しくは水性の植物抽出物などの活性化粧成分であることを特徴とする、請求項1〜3のいずれか一項に記載の方法。
- 前記活性成分用の前記親油性マトリックス材料が、8個超の炭素原子、好ましくは8〜22個の炭素原子を有する炭化水素、(C8〜C22)脂肪族アルコール、(C8〜C22)脂肪酸、及び/又は前記脂肪酸部位において8〜22個の炭素原子を有する脂肪酸エステルであることを特徴とする、請求項1〜4のいずれか一項に記載の方法。
- 前記無機増粘剤が、ヒュームドシリカ、金属酸化セラミック、及び/又は金属のナノ粒子であることを特徴とする、請求項1〜5のいずれか一項に記載の方法。
- 前記有機増粘剤が、脂肪族−芳香族ブロックコポリマーであることを特徴とする、請求項1〜6のいずれか一項に記載の方法。
- 活性成分及び親油性材料の前記組成物を、セルロースのキログラム当たり、0.1〜200gの濃度で使用することを特徴とする、請求項1〜7のいずれか一項に記載の方法。
- 前記油中水型エマルジョンが、油性相中に分散された親水性相、好ましくはそれぞれ8個超の炭素原子を有する無極性炭化水素、脂肪族アルコール、脂肪酸、及び脂肪酸エステル、及び天然又は合成乳化剤と混合された活性化粧成分の水性調製物又は植物成分の水性抽出物を含み、水性構成成分の濃度が、液相のキログラム当たり、0.1〜200gであることを特徴とする、請求項8に記載の方法。
- 前記層状ケイ酸塩の剥離の程度、前記層状ケイ酸塩中における前記化学構造及び前記陽イオンの濃度、前記有機修飾層状ケイ酸塩の事前膨張中、及び/又は前記活性成分のペースト及び前記活性成分用の親油性材料の生産中の温度、その中で使用される分散剤の粘度、その中の水の含有量、前記親油性マトリックス材料の性質、並びに、前記有機修飾層状ケイ酸塩の混合/剪断の強度及び持続時間によって、前記活性成分の放出を制御することを特徴とする、請求項1〜9のいずれか一項に記載の方法。
- 前記無機ナノ粒子を、前記活性成分及び前記活性成分用の親油性材料の混合物の全重量に基づいて、0.1〜10wt%の割合で使用することを特徴とする、請求項1〜10のいずれか一項に記載の方法。
- 前記紡糸液の剪断流動化指数nが、0.0〜−1.2の範囲内、好ましくは−0.1〜−1.0の範囲内であることを特徴とする、請求項1〜11にいずれか一項に記載の方法。
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US10905645B2 (en) | 2021-02-02 |
CN107109705B (zh) | 2020-04-28 |
EP3230359A1 (de) | 2017-10-18 |
CN107109705A (zh) | 2017-08-29 |
DE102015121440A1 (de) | 2016-06-09 |
JP2018501413A (ja) | 2018-01-18 |
KR20170095295A (ko) | 2017-08-22 |
KR102550842B1 (ko) | 2023-07-05 |
US20170333331A1 (en) | 2017-11-23 |
WO2016091963A1 (de) | 2016-06-16 |
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