JP4313196B2 - 活性物質カプセル化法 - Google Patents
活性物質カプセル化法 Download PDFInfo
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- JP4313196B2 JP4313196B2 JP2003518488A JP2003518488A JP4313196B2 JP 4313196 B2 JP4313196 B2 JP 4313196B2 JP 2003518488 A JP2003518488 A JP 2003518488A JP 2003518488 A JP2003518488 A JP 2003518488A JP 4313196 B2 JP4313196 B2 JP 4313196B2
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- interpolymer complex
- supercritical fluid
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- Saccharide Compounds (AREA)
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Description
この例では、0.4gのポリ(酢酸ビニル)−クロトン酸共重合体〔PVAc−CA、アルドリッチ(Aldrich)〕の形の相補的重合体を秤量し、3.6gのポリ(ビニルピロリドン)〔PVP−コリドン(Kollidon:商標)12PF、BASF〕と物理的に混合した。得られた粉末混合物を反応器中に入れ(例えば、図7〜9の反応器40)、反応器を密封した。反応器を二酸化炭素で1分間フラッシュした。
この例では、例1を繰り返した。但し、1.8gのポリ(酢酸ビニル)−クロトン酸共重合体(PVAc−CA、アルドリッチ)を秤量し、16.2gのポリ(ビニルピロリドン)(PVP−コリドン12PF、BASF)及び粘度変性剤としての2gのポリ(エチレングリコール)〔PEG 1000、メルク(Merck〕と物理的に混合した。得られた粉末混合物を反応器中に入れ(図7〜9の40参照)、反応器を密封した。反応器を二酸化炭素で1分間フラッシュした。
この例では、例1及び2の手順を繰り返した。但し、0.4gのポリ(酢酸ビニル)−クロトン酸共重合体(PVAc−CA、アルドリッチ)を秤量し、3.6gのポリ(ビニルピロリドン)−ポリ(酢酸ビニル)共重合体(PVP−PVAc−PVP−VA S630、ISP)と物理的に混合した。混合物を反応器中に入れ、反応器を密封した。反応器を二酸化炭素で1分間フラッシュした。
この例では、例1〜3の手順を繰り返した。但し、0.4gのポリ(酢酸ビニル)−クロトン酸共重合体(PVAc−CA、アルドリッチ)を秤量し、3.6gのポリ(エチレンオキシド)−ポリ(プロピレンオキシド)−ポリ(エチレンオキシド)三元ブロック共重合体〔PEO−PPO−PEO−プルロニック(Pluronic:商標)PE6800、BASF〕と物理的に混合した。得られた粉末混合物を反応器中に入れ、反応器を密封した。反応器を二酸化炭素で1分間フラッシュした。
この例では、次の粉末成分を物理的に混合した:
成分 商品名 供給業者 量
ポリ(ビニルピロリドン) コリドン12PF BASF 7.2g
ポリ(酢酸ビニル)−クロトン酸 − アルドリッチ 0.8g
インドメタシン インドメタシン シグマ(Sigma) 2g
この例では、10gのポリ(酢酸ビニル)−プロトン酸共重合体(PVAc−CA、アルドリッチ)を秤量し、50℃に加熱した90gのエタノールに溶解した。次に10gのポリ(ビニルピロリドン)(PVP−コリドン12PF、BASF)を90gのエタノールに溶解した。それら二種類の重合体エタノール溶液を、次に一緒に混合した。真空炉中で約60℃の温度及び約10kPaの絶対低下圧力で加熱することにより混合物からエタノールを蒸発させ、固体インターポリマー錯体残留物を得た。次にこの残留物をコーヒー粉砕器で5分間粉砕し、せいぜい50μmまで粒径を減少させた。
次の成分を物理的に混合した:
成分 商品名 供給業者 量
ポリ(ビニルピロリドン) コリドン12PF BASF 7.2g
ポリ(酢酸ビニル)−クロトン酸 − アルドリッチ 0.8g
PEO−PPO−PEO共重合体 プルロニックPE6800 BASF 2g
アルドリッチ − アルドリッチ・ケミカル社
私書箱355
ミルウォーキー
ウィスコンシン州 53233
USA
BASF − BASF南アフリカ社(親会社)
私書箱2801
ハーフウエイ・ハウス(Halfway House)1685
南アフリカ
メルク − メルク社(親会社)
私書箱2805
ダルバン(Durban)4000
南アフリカ
ISP − 欧州ISP
アラン・ターニング・ロード(Alan Turning Road)40
サリー・リサーチ・パーク(Surrey Research Park)
ギルドフォルド(Guildford)
サリー(Surrey)GU2 5YF
英国
シグマ − シグマ社(親会社)
私書箱4853
アトラスビル(Atlasville)1465
南アフリカ
ペトロウ − CJペトロウ・ケミカルズ社(親会社)(代行業者)
68 5番街
アルバートビル(Albertville)2193
南アフリカ
Claims (8)
- 粒状のカプセル化生成物を製造するために重合体カプセル化材料で活性物質をカプセル化する方法において、超臨界流体、重合体カプセル化材料、及び活性物質の混合物を形成すること、前記カプセル化材料で前記活性物質をカプセル化するか又はそれを引き起こし、カプセル化生成物を形成すること、前記超臨界流体からカプセル化生成物を分離すること、及びもし必要ならば、前記カプセル化生成物を粒径減少にかけ、前記活性物質が前記カプセル化材料によってカプセル化されたカプセル化生成物粒子を得ることにより行い、然も、
前記混合物の形成が、超臨界流体、活性物質、及び、少なくとも二種類の相補的重合体を含むインターポリマー錯体の形の重合体カプセル化材料からなり、前記カプセル化生成物が、前記インターポリマー錯体によりカプセル化された前記活性物質の粒子を含むようにし、
しかも、前記超臨界流体は二酸化炭素であり、
前記混合物の形成が、インターポリマー錯体中に前記超臨界二酸化炭素を溶解してインターポリマー錯体を液化又は可塑化する工程を有し、そして、
インターポリマー錯体を形成する重合体を、ポリ(酢酸ビニル)−クロトン酸共重合体、ポリ(ビニルピロリドン)、ポリ(エチレングリコール)、ポリ(ビニルピロリドン)−ポリ(酢酸ビニル)共重合体、及びポリ(エチレンオキシド)−ポリ(プロピレンオキシド)−ポリ(エチレンオキシド)三元ブロック共重合体からなる群からの相補的物質から選択する
ことを特徴とする、上記活性物質カプセル化方法。 - 混合物の形成が、液化又は可塑化状態で混合した時、一緒に相互作用することができる少なくとも二種類の相補的重合体を混合し、それら重合体を含む混合物を得る工程、前記重合体中に超臨界流体を溶解する工程、及び混合された液化又は可塑化状態で前記重合体を一緒に相互作用させるか又はそれを引き起こし、インターポリマー錯体を形成する工程を有する、請求項1に記載の方法。
- 重合体の混合が、せいぜい1000μmの粒径を有する重合体粒子を含む粒子混合物を形成し、然る後、超臨界流体を前記重合体粒子中に溶解する、請求項2に記載の方法。
- せいぜい1000μmの粒径を有する粒子を含む粒子状の相補的重合体中に別々に超臨界流体を溶解し、然る後、液化又は可塑化状態の重合体を混合して、混合物を形成する、請求項2に記載の方法。
- インターポリマー錯体で活性物質をカプセル化するか又はそれを引き起こすことが、超臨界流体が蒸発して、インターポリマー錯体により活性物質がカプセル化された粒子を含む残留物を残す温度及び圧力を有する雰囲気中で混合物を噴霧することを含む、請求項2〜4のいずれか1項に記載の方法。
- インターポリマー錯体中に超臨界流体を溶解してインターポリマー錯体を液化するか又は可塑化することが、インターポリマー錯体中に粘度減少剤を分散させてインターポリマー錯体の粘度を低下し、噴霧を促進させる工程を含む、請求項5に記載の方法。
- インターポリマー錯体で活性物質をカプセル化するか又はそれを引き起こすことが、超臨界流体を蒸発させて、インターポリマー錯体中に活性物質が分散したものを含む固体残留物を残すこと、及びその残留物を粒径減少にかけて活性物質がインターポリマー錯体によりカプセル化されている粒子を得ることを含む、請求項1〜4のいずれか1項に記載の方法。
- 混合物の形成が、重合体表面活性剤を混合物中に混合する工程を含む、請求項1〜7のいずれか1項に記載の方法。
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PCT/IB2002/001853 WO2003013478A2 (en) | 2001-05-30 | 2002-05-28 | Method of encapsulating an active substance |
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EP1401404B1 (en) | 2001-05-30 | 2008-04-16 | Csir | Method of encapsulating an active substance |
US7903319B2 (en) * | 2006-07-11 | 2011-03-08 | E Ink Corporation | Electrophoretic medium and display with improved image stability |
US20080082764A1 (en) * | 2006-10-03 | 2008-04-03 | Yi Feng Jang | Memory accessing system and method |
GB0812742D0 (en) | 2008-07-11 | 2008-08-20 | Critical Pharmaceuticals Ltd | Process |
GB201317756D0 (en) | 2013-10-08 | 2013-11-20 | Critical Pharmaceuticals Ltd | New process |
DE102018210030A1 (de) * | 2018-06-20 | 2019-12-24 | Thyssenkrupp Ag | Verwendung und Recyclieren von überkritischen CO2 als Lösungsmittel für PLA und weitere biologisch abbaubaren Polymere in das Beschichtungsverfahren für Düngemittel |
IT201800007993A1 (it) * | 2018-08-09 | 2020-02-09 | Greenbone Ortho Srl | Impianto finalizzato alla trasformazione chimica di materiali nello stato 3d |
CN112812355B (zh) * | 2020-12-31 | 2022-09-23 | 厦门天生爱科技有限公司 | 一种具有缓释挥发性中草药有效成分的功能高分子发泡材料、制备方法和用途 |
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GB8500121D0 (en) | 1985-01-03 | 1985-02-13 | Connaught Lab | Microencapsulation of living cells |
EP0321607B1 (en) * | 1987-12-21 | 1993-09-22 | Union Carbide Corporation | Supercritical fluids as diluents in liquid spray application of coatings |
EP0706821A1 (en) * | 1994-10-06 | 1996-04-17 | Centre De Microencapsulation | Method of coating particles |
US5939485A (en) * | 1995-06-19 | 1999-08-17 | Medlogic Global Corporation | Responsive polymer networks and methods of their use |
WO1997006787A2 (en) * | 1995-08-17 | 1997-02-27 | Dyer, Alison, Margaret | Controlled release products |
FR2753639B1 (fr) * | 1996-09-25 | 1998-12-11 | Procede de preparation de microcapsules de matieres actives enrobees par un polymere et nouvelles microcapsules notamment obtenues selon le procede | |
US5766637A (en) * | 1996-10-08 | 1998-06-16 | University Of Delaware | Microencapsulation process using supercritical fluids |
JP3770917B2 (ja) * | 1997-02-17 | 2006-04-26 | 株式会社ドペル | 人造石の製造方法 |
GB9800936D0 (en) | 1997-05-10 | 1998-03-11 | Univ Nottingham | Biofunctional polymers |
ES2342747T3 (es) | 1997-10-15 | 2010-07-13 | University Of South Florida | Recubrimiento de material en particulas asistido por un fluido supercritico. |
IT1296464B1 (it) * | 1997-11-19 | 1999-06-25 | Vectorpharma Int | Composizioni farmaceutiche in forma di polveri di polimeri reticolati caricati con farmaci e relativo processo di preparazione mediante |
GB9814619D0 (en) | 1998-07-06 | 1998-09-02 | Cole Polytechnique Fudurale De | Materials and methods relating to encapsulation |
US6340722B1 (en) | 1998-09-04 | 2002-01-22 | The University Of Akron | Polymerization, compatibilized blending, and particle size control of powder coatings in a supercritical fluid |
US6350786B1 (en) * | 1998-09-22 | 2002-02-26 | Hoffmann-La Roche Inc. | Stable complexes of poorly soluble compounds in ionic polymers |
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US6372259B1 (en) * | 1999-11-10 | 2002-04-16 | University Of Iowa Research Foundation | Palatable, sustained release drug granules |
US6521258B1 (en) * | 2000-09-08 | 2003-02-18 | Ferro Corporation | Polymer matrices prepared by supercritical fluid processing techniques |
AU2001285242A1 (en) | 2000-09-08 | 2002-03-22 | Ferro Corporation | Controlled-release pharmaceuticals prepared by supercritical fluid processing techniques |
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