JP2011530336A - ポリウレタングラフト化ヒドロゲル - Google Patents
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Abstract
【選択図】図8B
Description
本願は、米国特許法第119条に基づいて2008年8月5日に出願の米国仮特許出願第61/086442号「Polyurethane−Grafted Hydrogels」の優先権を主張するものであり、この文献は参照により全て援用される。
本明細書で言及する全ての出版物及び特許出願は本願において参照により、各出版物又は特許出願が参照により具体的且つ個別に示されて援用される場合と同程度に援用される。
一実施例において、ポリウレタンに付着させられた2種類のポリカーボネート・ウレタングラフト化IPNヒドロゲルが生成された。使用された方法は同様のものであり、これらの方法は共に本明細書に記載されている。特注の型を使用した2工程光重合法によって2つの試料を別々に合成した。相互侵入ポリマーネットワークヒドロゲル成分は、UV開始フリーラジカル重合を基礎とした2工程連続ネットワーク形成技法によって合成された。第1ヒドロゲルネットワーク用の前駆体溶液は、UV感受性フリーラジカル開始剤としての2−ヒドロキシ−2−メチルプロピオフェノンと共にジメチルアセトアミドに溶解させられた精製PEG−ジメタクリレート(MW3400)(43質量%)から構成された。溶液を(別々に)特注のパイレックスガラス型内に流延し、次に型内の溶液を液体窒素浴内で急速凍結させた。ポリカーボネート・ウレタンモノメタクリレートの25%溶液(ジメチルアセトアミドに溶解)をヒドロゲル溶液の凍結面上に広げ、それぞれをガラス板で覆い、UV光源下、室温で反応させた。UV(2mW/cm2、350nm、10分)への曝露によって、各ケースにおけるヒドロゲル、ポリウレタン前駆体溶液はフリーラジカル誘発ゲル化を経て、同時に末端基の適合性により互いにグラフトした。第2ヒドロゲルネットワークを第1ヒドロゲルネットワークに組み込むために、ポリウレタングラフト化ヒドロゲルを型から取り出し、70%v/vアクリル酸溶液(一方は有機溶媒、もう一方は水。光開始剤としての1%v/v2−ヒドロキシ−2−メチルプロピオフェノン及び架橋剤としての1%v/vトリエチレングリコールジメタクリレートも含む)に24時間にわたって室温で浸漬した。膨潤したゲルをUV源に曝露し、第2ネットワークを第1ネットワーク内部で重合させることによって各ポリマー内にIPN構造を形成した。合成に続いて、ポリウレタングラフト化ヒドロゲルをジメチルアセトアミド中で洗浄し、熱対流炉(80℃)内で乾燥させ、溶媒を繰り返し交換しながらリン酸緩衝食塩水で広範囲に5日間にわたって洗浄することによって未反応成分を除去した。材料のサンプルを切断し、図10に示されるように顕微鏡で分析した。ポリウレタンの追加層をその他のサンプルに追加するために、ヒドロゲルのポリウレタン側の表面を空気乾燥させ、次にジメチルアセトアミド中のポリカーボネートウレタンの溶液(熱可塑性Bionate(登録商標)。図6を参照のこと)をその表面上に広げ、熱及び対流によって溶媒を蒸発させた。硬化、乾燥させたポリウレタン含有前駆体の静的機械的性質の分析結果を図11に示す。
別の実施例において、ポリエーテルウレタンを出発材料として使用した。材料は、実施例1に記載のプロセスに従って形成された。
別の実施例において、別のポリウレタン上に積層させたポリウレタンを形成し、骨に接合した。メタクリレート末端基を有するポリカーボネートウレタンを、メチレンジフェニルジイソシアネートとポリカーボネートジオール(ソフトセグメント)及び鎖延長剤としての1,4−ブタンジオールとを固体濃度30%でジメチルアセトアミド中、35℃で反応させることによって合成した。モノマーである2−ヒドロキシエチルメタクリレートを反応混合物に添加し、溶液を更に24時間にわたって反応させた。得られたポリカーボネートウレタンジメタクリレートを事前に形成されたポリカーボネートウレタン(Bionate(登録商標))の表面上に流延し、溶媒を35℃、対流下で除去した。
Claims (74)
- ヒドロゲル層と末端官能化ポリウレタン層とを含む2つの化学的にグラフトされたポリマー層を含む物品。
- 前記ヒドロゲルが前記ポリウレタンに界面グラフトされる、請求項1に記載の物品。
- 前記ポリウレタンが、ポリカーボネートウレタン、ポリカーボネートウレタンウレア、ポリエステルウレタン、ポリエーテルウレタン、ポリウレタンウレア又はこれらのシリコーン誘導体を含む、請求項1に記載の物品。
- 前記ポリウレタンが、ハードセグメントと、ソフトセグメントと、鎖延長剤と末端基とを含む、請求項1に記載の物品。
- 前記ポリウレタンハードセグメントが、1,5−ナフタレンジイソシアネート(NDI)、イソホロンイソシアネート(IPDI)、3,3−ビトルエンジイソシアネート(TODI)、メチレンビス(p−シクロヘキシルイソシアネート)(H12MDI)、シクロヘキシルジイソシアネート(CHDI)、2,6−トルエンジイソシアネート又は2,4−トルエンジイソシアネート(TDI)、ヘキサメチルジイソシアネート(HMDI)又はメチレンビス(p−フェニルイソシアネート)(MDI)を含む、請求項4に記載の物品。
- 前記ポリウレタンソフトセグメントが、ヒドロキシ末端ブタジエン、ヒドロキシル末端ポリイソブチレン、ヒドロキシブチル末端ポリジメチルシロキサン(PDMS)、ポリ(1,6−ヘキシル−1,2−エチルカーボネート)、水素化ポリブタジエン、ポリカプロラクトン、ポリエチレンアジペート、ポリエチレンオキシド(PEO)、ポリヘキサメチレンカーボネートグリコール、ポリプロピレンオキシド(PPO)、ポリテトラメチレンアジペート又はポリ(テトラメチレンオキシド)(PTMO)を含む、請求項4に記載の物品。
- 前記ポリウレタン鎖延長剤が、1,4−ブタンジオール、エチレンジアミン、4,4´−メチレンビス(2−クロロアニリン)(MOCA)、エチレングリコール又はヘキサンジオールを含む、請求項4に記載の物品。
- 前記ポリウレタン末端基が、アシルアミド、アクリレート、アリルエーテル、メタクリレート又はビニルを含む、請求項4に記載の物品。
- 前記ヒドロゲルが、末端結合マクロマーサブユニットを含む、請求項1に記載の物品。
- 前記マクロマーサブユニットがPEGである、請求項9に記載の物品。
- 前記ヒドロゲルが生体分子を含む、請求項1に記載の物品。
- 前記生体分子が、コラーゲン、1種以上の成長因子、ステロイド、ビスホスホネート、これらの組み合わせ又は誘導体を含む、請求項11に記載の物品。
- 前記成長因子が、骨形成タンパク質、線維芽細胞増殖因子、形質転換増殖因子又は造骨性タンパク質の1種以上を含む、請求項12に記載の物品。
- 前記ヒドロゲルがホモポリマーを含む、請求項1に記載の物品。
- 前記ヒドロゲルが重合モノマーサブユニットを含む、請求項1に記載の物品。
- 前記ヒドロゲルがコポリマーを含む、請求項1に記載の物品。
- 前記コポリマーが重合サブユニットを含む、請求項16に記載の物品。
- 前記サブユニットが、アクリルアミド、ヒドロキシエチルアクリルアミド、N−イソプロピルアクリルアミド、2−ヒドロキシエチルメタクリレート及び2−ヒドロキシエチルアクリレートの1種以上である、請求項17に記載の物品。
- ヒドロゲルの乾燥質量の少なくとも50%がテレケリックマクロモノマーを含む、請求項16に記載の物品。
- ヒドロゲルの乾燥質量の少なくとも75%がテレケリックマクロモノマーを含む、請求項16に記載の物品。
- ヒドロゲルの乾燥質量の少なくとも95%がテレケリックマクロモノマーを含む、請求項16に記載の物品。
- 前記ヒドロゲルが、第1及び第2ネットワークを含むIPNを含む、請求項1に記載の物品。
- 前記第1ネットワークが重合マクロマーサブユニットを含む、請求項22に記載の物品。
- 前記マクロマーサブユニットが、PEG、ポリ(N−ビニルピロリドン)、ポリジメチルシロキサン、ポリ(ビニルアルコール)、多糖又は生体分子を含む、請求項23に記載の物品。
- 前記マクロマーサブユニットが末端又は側鎖官能基を含み、前記末端又は側鎖官能基が、アクリルアミド、アクリレート、アリル、メタクリルアミド、メタクリレート、N−ビニルスルホン及びビニルの少なくとも1種を含む、請求項23に記載の物品。
- 前記第2ネットワークが重合サブユニットを含む、請求項22に記載の物品。
- 前記第2ネットワークが親水性である、請求項26に記載の物品。
- 前記第2ネットワークがイオン化可能である、請求項27に記載の物品。
- 前記イオン化可能なネットワークがアニオン性である、請求項28に記載の物品。
- 前記アニオン性第2ネットワークの前記サブユニットが、カルボン酸基及びスルホン酸基の少なくとも一方を含む、請求項29に記載の物品。
- 前記アニオン性第2ネットワークがポリアクリル酸である、請求項29に記載の物品。
- 前記イオン化可能なネットワークがカチオン性である、請求項29に記載の物品。
- 前記親水性ネットワークが非イオン性である、請求項27に記載の物品。
- 前記非イオン性ネットワークのサブユニットが、アクリルアミド、メタクリルアミド、N−ヒドロキシエチルアクリルアミド、N−イソプロピルアクリルアミド、メチルメタクリレート、N−ビニルピロリドン、2−ヒドロキシエチルメタクリレート、2−ヒドロキシエチルアクリレート又はこれらの誘導体の1種以上を含む、請求項33に記載の物品。
- 両方のネットワークが前記ポリウレタンにグラフトされる、請求項22に記載の物品。
- 前記第1ポリウレタンに付着した第2ポリウレタンを更に含む、請求項1に記載の物品。
- 前記第2ポリウレタンが官能化末端基を含む、請求項36に記載の物品。
- 前記第2ポリウレタンが塩を含む、請求項36に記載の物品。
- 前記第2ポリウレタンが多孔性である、請求項36に記載の物品。
- 前記第2ポリウレタンが発泡剤を含む、請求項36に記載の物品。
- 前記第2ポリウレタンが生体分子を更に含む、請求項36に記載の物品。
- 前記生体分子が、コラーゲン、骨形成タンパク質、ビスホスホネート及び造骨性タンパク質の少なくとも1種を含む、請求項41に記載の物品。
- 前記第2ポリウレタンが骨成分を更に含む、請求項36に記載の物品。
- 前記骨成分が、少なくとも炭酸アパタイト、ヒドロキシアパタイト、α−リン酸三カルシウム、β−リン酸三カルシウム及びその他のリン酸カルシウムの一種である、請求項43に記載の物品。
- 封入充填剤を更に含む、請求項1に記載の物品。
- 酸化防止剤を更に含む、請求項1に記載の物品。
- 前記酸化防止剤が、アスコルビン酸、ビタミンE、Irganox(登録商標)、サントホワイト、グルタチオン、尿酸、リポ酸、βカロチン、レチノール及びユビキノールから成る群から選択される、請求項46に記載の物品。
- 第1ポリウレタンと、前記第1ポリウレタンに付着した第2ポリウレタンとを含む物品であって、前記第2ポリウレタンがパテ様硬度を有することを特徴とする物品。
- 前記第2ポリウレタンが反応性末端基を含む、請求項48に記載の物品。
- 前記反応性基が、アクリレート、アクリルアミド、アリルエーテル、メタクリレート又はビニルを含む、請求項49に記載の物品。
- 前記第2ポリウレタンが塩を含む、請求項48に記載の物品。
- 前記第2ポリウレタンが多孔性である、請求項48に記載の物品。
- 封入充填剤を更に含む、請求項48に記載の物品。
- 酸化防止剤を更に含む、請求項48に記載の物品。
- 前記酸化防止剤が、アスコルビン酸、βカロチン、グルタチオン、Irganox(登録商標)、リポ酸、レチノール、サントホワイト、尿酸、ユビキノール及びビタミンEから成る群から選択される。請求項54に記載の物品。
- ポリウレタンをヒドロゲルにグラフトする方法であって、
反応性ヒドロゲル前駆体又は末端官能化ポリウレタン前駆体を含む第1溶液を提供し、
前記第1溶液に第2溶液を適用し、前記第1溶液がヒドロゲル前駆体を含む場合は前記第2溶液が末端官能化ポリウレタン前駆体を含み、前記第1溶液がポリウレタン前駆体を含む場合は前記第2溶液が反応性ヒドロゲル前駆体を含み、
前記2つの溶液を重合及び架橋することによってポリウレタンとヒドロゲルとを含む積層グラフトポリマーを形成する工程を含むことを特徴とする方法。 - 前記第1溶液を凍結させることによって固化層を形成することを更に含む、請求項56に記載の方法。
- 前記第1溶液を乾燥させることによって固化層を形成することを更に含む、請求項56に記載の方法。
- 前記重合工程が、前記第1及び第2溶液をUV光又は熱に曝露することを含む、請求項56に記載の方法。
- 前記積層グラフトポリマーの少なくとも一部を第3溶液に浸漬し、前記第3溶液が前記第1又は第2溶液の前駆体とは異なるヒドロゲル前駆体を含み、
前記グラフトポリマーの少なくとも一部を膨潤させ、
前記第3溶液を重合することによってポリウレタンと、第1ヒドロゲルネットワークと絡み合った第2ヒドロゲルネットワークを含むIPNとを含むグラフトポリマーを生成することを更に含む、請求項56に記載の方法。 - 前記第3溶液が前記第1ヒドロゲルの部分溶媒を含み、また前記第1ヒドロゲルネットワークを膨潤可能である、請求項60に記載の方法。
- 前記ヒドロゲル溶液がテレケリック分子を含む、請求項56に記載の方法。
- 前記テレケリック分子が、アクリレート、メタクリレート、アクリルアミド、ビニル及びアリルエーテルから成る群から選択される1つ以上の末端基を有するポリ(エチレングリコール)である、請求項62に記載の方法。
- 前記ポリウレタン溶液が、ビニル末端ポリウレタン、ポリカーボネートウレタン、ポリエーテルウレタン、ポリカーボネートウレタンウレア、ポリエステルウレタン、ポリウレタンウレア及びこれらのシリコン誘導体の1種以上を含む、請求項56に記載の方法。
- 骨に付着可能な材料を製造する方法であって、
反応性末端基を含むポリウレタン前駆体、溶媒、光開始剤及び架橋剤を含む溶液をヒドロゲルにグラフトする第1ポリウレタンに適用し、
前記ポリウレタン前駆体を重合し、
熱及び対流で処理することによって前記溶媒を除去してポリウレタングラフト化ヒドロゲル上に被覆された第2ポリウレタンを得る工程を含むことを特徴とする方法。 - 前記第2ポリウレタンが、ポリカーボネートウレタン又はポリエーテルウレタンを含む、請求項65に記載の方法。
- 前記反応性末端基が、アクリルアミド、アクリレート、アリルエーテル、メタクリレート及びビニルの1種以上を含む、請求項65に記載の方法。
- 前記溶媒が、ジメチルアセトアミド、ジメチルスルホキシド及びテトラヒドロフランの1種以上を含む、請求項65に記載の方法。
- 前記適用工程が塩を更に含む、請求項65に記載の方法。
- 物品を骨に付着させる方法であって、前記物品が光開始剤及び架橋剤を含む多孔性ポリウレタンを含み、
前記多孔性ポリウレタンを前記骨に対して並置し、
前記多孔性ポリウレタンを重合することによって前記物品を前記骨に付着させる工程を含むことを特徴とする方法。 - 前記多孔性ポリウレタンを前記骨に接触させる及び前記骨内に流入させることを更に含む、請求項70に記載の方法。
- 前記物品が、前記多孔性ポリウレタンに付着した第2ポリウレタンを更に含む、請求項70に記載の方法。
- 前記物品がヒドロゲルを更に含む、請求項72に記載の方法。
- 前記重合工程が、前記多孔性ポリウレタンをUV光、熱又は化学開始剤に曝露することを含む、請求項70に記載の方法。
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JP2018526168A (ja) * | 2015-08-10 | 2018-09-13 | ハイアレックス オーソペディックス インコーポレイテッド | 相互貫入ポリマーネットワーク |
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EP2323670A4 (en) | 2013-12-25 |
CA2731698A1 (en) | 2010-02-11 |
US20100032090A1 (en) | 2010-02-11 |
US8497023B2 (en) | 2013-07-30 |
US8853294B2 (en) | 2014-10-07 |
JP5722773B2 (ja) | 2015-05-27 |
EP2323670A1 (en) | 2011-05-25 |
WO2010017282A1 (en) | 2010-02-11 |
US20140213661A1 (en) | 2014-07-31 |
US20150025161A1 (en) | 2015-01-22 |
KR20110040969A (ko) | 2011-04-20 |
AU2009279716A1 (en) | 2010-02-11 |
US20130261212A1 (en) | 2013-10-03 |
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