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Polymer and its production 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • C08G-063/04
출원번호 US-0751671 (1985-07-03)
우선권정보 JP-0140356 (1984-07-06)
발명자 / 주소
  • Tanaka Motoaki (Saitama JPX) Ogawa Yasuaki (Osaka JPX) Miyagawa Tsutomu (Saitama JPX) Watanabe Toshio (Saitama JPX)
출원인 / 주소
  • Waco Pure Chemical Ind. Inc. (Osaka JPX 03) Takeda Chemical Industries, Ltd. (Osaka JPX 03)
인용정보 피인용 횟수 : 38  인용 특허 : 2

초록

A polymer or copolymer of lactic acid and/or glycolic acid which has a weight-average molecular weight of not less than about 5,000 and a dispersity of about 1.5 to 2 is advantageously used as a biodegradable polymer or copolymer for medical preparation.

대표청구항 ▼

In a method for producing a polymer or copolymer of lactic acid and/or glycolic acid by subjecting lactic acid and/or glycolic acid to a polycondensation reaction, an improvement which comprises employing a solid inorganic acid catalyst as a polycondensation catalyst, wherein the solid inorganic aci

이 특허에 인용된 특허 (2)

  1. Okuzumi Yuzi (Belle Mead NJ) Mellon A. Darline (Bridgewater NJ) Wasserman David (Springfield NJ), Addition copolymers of lactide and glycolide and method of preparation.
    상세보기
  2. Nevin Robert S. (Indianapolis IN), Polymerization process and product.
    상세보기

이 특허를 인용한 특허 (38)

  1. Stefely James S. ; Schultz David W. ; Schallinger Luke E. ; Perman Craig A. ; Leach Chester L. ; Duan Daniel C., Biocompatible compounds for pharmaceutical drug delivery systems.
    상세보기
  2. Stefely, James S.; Schultz, David W.; Leach, Chester L.; Duan, Daniel C., Biocompatible compounds for sustained release pharmaceutical drug delivery systems.
    상세보기
  3. Bendix Dieter (Ingelheim am Rhein DEX) Entenmann Gunther (Ingelheim am Rhein DEX), Catalyst-free resorbable homopolymers and copolymers.
    상세보기
  4. Gruber Patrick R. (St. Paul MN) Hall Eric S. (Crystal MN) Kolstad Jeffrey J. (Wayzata MN) Iwen Matthew L. (Minneapolis MN) Benson Richard D. (Long Lake MN) Borchardt Ronald L. (Eden Prairie MN), Continuous process for manufacture of a purified lactide.
    상세보기
  5. Gruber Patrick Richard ; Hall Eric Stanley ; Kolstad Jeffrey John ; Iwen Matthew Lee ; Benson Richard Douglas ; Borchardt Ronald Leo, Continuous process for manufacture of lactide polymers with controlled optical purity.
    상세보기
  6. Gruber Patrick Richard ; Hall Eric Stanley ; Kolstad Jeffrey John ; Iwen Matthew Lee ; Benson Richard Douglas ; Borchardt Ronald Leo, Continuous process for manufacture of lactide polymers with controlled optical purity.
    상세보기
  7. Gruber Patrick Richard ; Hall Eric Stanley ; Kolstad Jeffrey John ; Iwen Matthew Lee ; Benson Richard Douglas ; Borchardt Ronald Leo, Continuous process for the manufacture of lactide and lactide polymers.
    상세보기
  8. Bigg Donald M. ; Sinclair Richard G. ; Lipinsky Edward S. ; Litchfield John H. ; Allen Billy R., Degradation control of environmentally degradable disposable materials.
    상세보기
  9. Matsumura, Shuichi, Depolymerization method for polymer containing ester bond in main chain and method for producing polymer containing ester bond in main chain from depolymerization product.
    상세보기
  10. Kuroda,Yoshito; Watanabe,Harumi; Yokoyama,Masako, Glycolic acid copolymer and method for production thereof.
    상세보기
  11. Lewis Danny H. (Hartselle AL), Growth promoters for animals.
    상세보기
  12. Li, Hong; Zhang, Quanxing; Huang, Wei; Jiang, Wei; Zong, Xupeng; Pan, Bingcai, High molecular weight polylactic acid synthesized via polycondensation catalyzed by bionic creatinine guanidinium chloride.
    상세보기
  13. Chern, Rey T.; Zingerman, Joel R., Liquid polymeric compositions for controlled release of bioactive substances.
    상세보기
  14. James S. Stefely ; David W. Schultz ; Luke E. Schallinger ; Craig A. Perman ; Chester L. Leach ; Daniel C. Duan, Medicinal aerosol solution formulation with biocompatible polymer.
    상세보기
  15. Gruber Patrick R. (St. Paul MN) Kolstad Jeffrey J. (Wayzata MN) Ryan Christopher M. (Dayton MN) Hall Eric S. (Crystal MN) Eichen Conn Robin S. (Minneapolis MN), Melt-stable amorphous lactide polymer film and process for manufacture thereof.
    상세보기
  16. Gruber Patrick Richard ; Kolstad Jeffrey John ; Ryan Christopher M. ; Hall Eric Stanley ; Eichen Conn Robin Sue, Melt-stable amorphous lactide polymer film and process for manufacture thereof.
    상세보기
  17. Gruber Patrick Richard ; Kolstad Jeffrey John ; Ryan Christopher M. ; Hall Eric Stanley ; Eichen Conn Robin Sue, Melt-stable amorphous lactide polymer film and process for manufacture thereof.
    상세보기
  18. Gruber Patrick Richard ; Kolstad Jeffrey John ; Hall Eric Stanley ; Eichen Conn Robin Sue ; Ryan Christopher M., Melt-stable lactide polymer composition and process for manufacture thereof.
    상세보기
  19. Gruber Patrick Richard ; Kolstad Jeffrey John ; Hall Eric Stanley ; Eichen Conn Robin Sue ; Ryan Christopher M., Melt-stable lactide polymer composition and process for manufacture thereof.
    상세보기
  20. Gruber Patrick Richard ; Kolstad Jeffrey John ; Hall Eric Stanley ; Eichen Conn Robin Sue ; Ryan Christopher M., Melt-stable lactide polymer composition and process for manufacture thereof.
    상세보기
  21. Gruber Patrick R. ; Kolstad Jeffrey J. ; Ryan Christopher M. ; Eichen Conn Robin S. ; Hall Eric S., Melt-stable lactide polymer nonwoven fabric and process for manufacture thereof.
    상세보기
  22. Patrick R. Gruber ; Jeffrey J. Kolstad ; Christopher M. Ryan ; Robin S. Eichen Conn ; Eric S. Hall, Melt-stable lactide polymer nonwoven fabric and process for manufacture thereof.
    상세보기
  23. Gruber Patrick Richard ; Kolstad Jeffrey John ; Ryan Christopher M. ; Hall Eric Stanley ; Eichen Conn Robin Sue, Melt-stable semi-crystalline lactide polymer film and process for manufacture thereof.
    상세보기
  24. Gruber Patrick Richard ; Kolstad Jeffrey John ; Ryan Christopher M. ; Hall Eric Stanley ; Eichen Conn Robin Sue, Melt-stable semi-crystalline lactide polymer film and process for manufacture thereof.
    상세보기
  25. Gruber Patrick Richard ; Kolstad Jeffrey John ; Ryan Christopher M. ; Hall Eric Stanley ; Eichen Conn Robin Sue, Melt-stable semi-crystalline lactide polymer film and process for manufacture thereof.
    상세보기
  26. Janoff Andrew S. (Yardley PA) Cullis Pieter R. (Vancouver CAX) Bally Marcel B. (Vancouver CAX) Fountain Michael W. (Griggstown NJ) Ginsberg Richard S. (Monroe NJ) Hope Michael J. (Vancouver CAX) Madd, Method of dehydrating liposomes using protective sugars.
    상세보기
  27. Mesens Jean (Wechelderzande BEX) Rickey Michael E. (Loveland OH) Atkins Thomas J. (Cincinnati OH), Method of inhibiting neurotransmitter activity using microencapsulated 3-piperidiny2-substituted 1,2-benzisoxazoles and.
    상세보기
  28. Mesens Jean,BEX ; Rickey Michael E. ; Atkins Thomas J., Microencapsulated 3-piperidinyl-substituted 1,2-benzisoxazoles 1,2-benzisothiazoles.
    상세보기
  29. Atkins, Thomas J.; Rickey, Michael E.; Mesens, Jean, Microencapsulated 3-piperidinyl-substituted 1,2-benzisoxazoles and 1,2-benzisothiazoles.
    상세보기
  30. Jean Mesens BE; Michael E. Rickey ; Thomas J. Atkins, Microencapsulated 3-piperidinyl-substituted 1,2-benzisoxazoles and 1,2-benzisothiazoles.
    상세보기
  31. Mesens Jean,BEX ; Rickey Michael E. ; Atkins Thomas J., Microencapsulated 3-piperidinyl-substituted 1,2-benzisoxazoles and 1,2-benzisothiazoles.
    상세보기
  32. Mesens Jean,BEX ; Rickey Michael E. ; Atkins Thomas J., Microencapsulated 3-piperidinyl-substituted 1,2-benzisoxazoles and 1,2-benzisothiazoles.
    상세보기
  33. Mesens, Jean; Rickey, Michael E.; Atkins, Thomas J., Microencapsulated 3-piperidinyl-substituted 1,2-benzisoxazoles and 1,2-benzisothiazoles.
    상세보기
  34. Mesens, Jean; Rickey, Michael E.; Atkins, Thomas J., Microencapsulated 3-piperidinyl-substituted 1,2-benzisoxazoles and 1,2-benzisothiazoles.
    상세보기
  35. Mesens,Jean; Rickey,Michael E.; Atkins,Thomas J., Microencapsulated 3-piperidinyl-substituted 1,2-benzisoxazoles and 1,2-benzisothiazoles.
    상세보기
  36. Gruber Patrick Richard ; Kolstad Jeffrey John ; Ryan Christopher M. ; Hall Eric Stanley ; Eichen Conn Robin Sue, Paper having a melt-stable lactide polymer coating and process for manufacture thereof.
    상세보기
  37. Li, Hong; Zhang, Quanxing; Jiang, Wei; Pan, Bingcai, Poly(lactic-co-glycolic acid) synthesized via copolycondensation catalyzed by biomass creatinine.
    상세보기
  38. Silvestri Loui J. (Miramar FL) Pyle H. Ruth (Ft. Lauderdale FL), Sustained release dosage form.
    상세보기

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