JP2011503290A - 生物医学用途用架橋ポリオレフィンおよびその製造方法 - Google Patents
生物医学用途用架橋ポリオレフィンおよびその製造方法 Download PDFInfo
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- JP2011503290A JP2011503290A JP2010533131A JP2010533131A JP2011503290A JP 2011503290 A JP2011503290 A JP 2011503290A JP 2010533131 A JP2010533131 A JP 2010533131A JP 2010533131 A JP2010533131 A JP 2010533131A JP 2011503290 A JP2011503290 A JP 2011503290A
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- olefin monomer
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Abstract
Description
を有する。
このタイプの好ましいオレフィンモノマーの例は、4−ビニルベンゾシクロブテンおよび2−(4−ベンゾシクロブテニル)−プロペンを含む。
このタイプの好ましいオレフィンモノマーの例は、2−メチル−3−(4−ベンゾシクロブテニル)−1−プロペンおよび2−メチル−4−(4−ベンゾシクロブテニル)−1−ブテンを含む。
337mLのメチルシクロヘキサン(MeCHx)を、機械的攪拌機、液体窒素冷却のためのステンレススチールサーペンタイン管、塩化メチル(MeCl)およびイソブチレン(IB)を容器中に供給するためのステンレススチール管、温度コントローラーを有する熱電対、窒素バブリング器および追加滴下漏斗を備えたガラス反応容器に加えた。液体窒素冷却により、液体を−80℃まで冷却した。ガスが液体中に凝縮するように、連続してMeCl(189g)およびIB(20g)を、液体中に浸漬した供給ラインを通して加えた。ガスが凝縮される間に、開始剤溶液(HDCE/DTBP/MeCHx 0.28g/0.45mL/15mL)を、反応器の蓋からポートを通して加えた。TiCl4(3.5mL、10ccのガラスシリンジを使用して)を次に反応器の蓋の開口を通して加えて、IB重合を開始させた(タイマーをスタートさせた)。40分後に、約4mLの反応混合物が反応器から回収され、そして過剰メタノール中でクエンチされた。スチレン/4VBCB/MeCHx(7mL/2mL/20mL)の混合物を、シリンジを通して2分間で反応器中にゆっくりと加えた。6分後に、反応を過剰のメタノールでクエンチした。
337mLのメチルシクロヘキサン(MeCHx)を、機械的攪拌機、液体窒素冷却のためのステンレススチールサーペンタイン管、塩化メチル(MeCl)およびイソブチレン(IB)を容器中に供給するためのステンレススチール管、温度コントローラーを有する熱電対、窒素バブリング器および追加滴下漏斗を備えたガラス反応容器に加えた。液体を、液体窒素冷却により−80℃まで冷却した。ガスが液体中に凝縮するように、連続してMeCl(189g)およびIB(20g)を、液体中に浸漬した供給ラインを通して加えた。ガスが凝縮される間に、開始剤溶液(HDCE/DTBP/MeCHx0.28g/0.45mL/15mL)を、反応器の蓋からポートを通して加えた。TiCl4(3.5mL、10ccのガラスシリンジを使用して)を次に反応器の蓋の開口を通して加えて、IB重合を開始させた(タイマーをスタートさせた)。5分後に、(10mLのMeCHx中に溶解した)36gのIBおよび1.5g4VBCBを、それぞれ7分間および9.5分間かけてゆっくりと加えた。最後に4−VBCBを加えた、60分間反応を続けた。サンプルを5、30および60分で取った。最後に反応を過剰メタノールでクエンチした。
上記のように生成させたポリ(st−co−4VBCB)−ポリIB−ポリ(st−co−4VBCB)トリブロックコポリマーのサンプル(0.2g)を2枚のテフロンフィルムの間に置き、そしてフィルムを2つの平面金属板の間に置いた。実際に圧力を掛けずに、熱プレス(250℃)に生じた構造物を10分間置いた。テフロンフィルムを、板から除去し、そして室温に冷却した。熱で処理したポリマーの小片を、THFを含むバイアル中においた。フィルムは一晩以上不溶性であり、架橋していたことを示した。
SIBSを1ポット内での2工程で調製した。第一の工程では、−80℃での乾燥窒素のブランケットの下、プロトントラップの存在下で、塩化メチル/ヘキサン溶媒系中で5−tert−ブチル、1、3−ジクミルクロライド/TiCl4開始系によって、イソブチレンを重合した。中央のPIBブロックが所望の分子量に到達した場合、この場合は50Kダルトンであるが、サンプルを反応器から除き、そしてスチレンを反応器に加え、そして外側のポリスチレンブロックがまた所定の長さ、この場合は75Kダルトンであるが、に到達するまで、重合を続けた。メタノールの添加により工程を終了させた。取得したサンプルをオーブン中で乾燥させた。オーブン中での乾燥の後で、サンプルは、ゴムバンドに類似する硬さを有することが観察された。
本実験は、例4に記載したようなポリイソブチレンの硬化を1−ヘキセンと比較するために行った。1−ヘキセンを塩化メチル/ヘキサン溶媒系中に溶解し、そして−80℃での乾燥窒素のブランケットの下、プロトントラップの存在下で、塩化メチル/ヘキサン溶媒系中5−tert−ブチル、1、3−ジクミルクロライド/TiCl4開始剤系の存在下で、混合物を反応ポットに加えた。しかし、この場合は、添加の終わりには、乾燥時には、ランピー油に類似するサンプルを取得した。連鎖停止効果のため、反応は決して完了しなかった。実験を中断したのでスチレンは反応器に加えられなかった。
Claims (24)
- (a)少なくとも1種のカチオン重合可能な分枝アルケンモノマーを含む複数の構成単位;
(b)ベンゾシクロブテン(BCB)ペンダント基を有する少なくとも1種のカチオン重合可能なオレフィンモノマーを含む複数の構成単位;および任意選択的に、
(c)少なくとも1種のガラス形成性モノマーを含む複数の構成単位、
を含んで成る、ポリマー。 - 該分枝アルケンモノマーが、イソオレフィンである、請求項1のポリマー。
- 該イソオレフィンが、イソブチレンである、請求項2のポリマー。
- 該BCBペンダント基を有するオレフィンモノマーが、4−ビニルベンゾシクロブテンまたは2−(4−ベンゾシクロブテニル)−プロペンである、請求項4のポリマー。
- 該BCBペンダント基を有するオレフィンモノマーが、2−メチル−3−(4−ベンゾシクロブテニル)−プロペンである、請求項6のポリマー。
- 該ガラス形成性モノマーが存在しかつスチレン、インデン、α−メチルスチレン、p−tert−ブチルスチレン、p−クロロスチレン、p−メトキシスチレン、p−tert−ブトキシスチレン、p−ヒドロキシスチレン、ノルボルネン、およびそれらの組み合わせからなる群から選択されている、請求項1のポリマー。
- 該アルケンモノマーが、イソブチレンであり、該BCBペンダント基を有するオレフィンモノマーが、4−ビニルベンゾシクロブテンであり、そして該ガラス形成性モノマーが、存在しかつスチレンである、請求項1のポリマー。
- 該ポリマーが、熱可塑性ポリマーである、請求項1のポリマー。
- 該ポリマーが、化学的に架橋している、請求項1のポリマー。
- 該ポリマーが、トリブロックコポリマーである、請求項1のポリマー。
- 該ポリマーが、ランダムコポリマーである、請求項1のポリマー。
- (a)少なくとも1種の分枝アルケンモノマー;
(b)ベンゾシクロブテン(BCB)ペンダント基を有する少なくとも1種のオレフィンモノマー;および任意選択的に、
(c)少なくとも1種のガラス形成性モノマー、
をカチオン重合させる工程を含んで成る、ポリマーの調製方法。 - 該アルケンモノマーが、イソブチレンである、請求項14の方法。
- 該カチオン重合ステップが、リビングカチオン重合を含む、請求項14の方法。
- 少なくとも180℃の温度に該ポリマーを曝して、架橋を開始させる工程のステップをさらに含む、請求項14の方法。
- 5−tert−ブチル−1、3−ビス(1−メトキシ−1−メチルエチル)ベンゼンを含む開始剤の存在下で、該重合反応が起こる、請求項14の方法。
- (a)少なくとも1種のカチオン重合可能な分枝アルケンモノマーを含む複数の構成単位;
(b)ベンゾシクロブテン(BCB)ペンダント基を有する少なくとも1種のカチオン重合可能なオレフィンモノマーを含む複数の構成単位;および任意選択的に、
(c)少なくとも1種のガラス形成性モノマーを含む複数の構成単位、
を含むポリマーを含んで成る、眼内レンズ。 - 該ポリマーが、可塑剤、X線不透過性フィラー、またはそれらの組み合わせをさらに含む、請求項21の眼内レンズ。
- 該ポリマーが、約1.525〜約1.535の範囲の屈折率を有する、請求項21の眼内レンズ。
- ポリマーがゲルになるように、該ポリマーが充分な量の可塑剤と混合される、請求項22の眼内レンズ。
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US12/145,704 US8765895B2 (en) | 2007-11-08 | 2008-06-25 | Crosslinked polyolefins for biomedical applications and method of making same |
PCT/US2008/072482 WO2009061534A1 (en) | 2007-11-08 | 2008-08-07 | Crosslinked polyolefins for biomedical applications and method of making same |
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US10766987B2 (en) | 2020-09-08 |
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US20090124773A1 (en) | 2009-05-14 |
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US20140309394A1 (en) | 2014-10-16 |
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