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    • 8. 发明公开
    • 온도 민감성 졸-젤 전이 폴리에틸렌글리콜/폴리펩티드 블록공중합체, 이의 제조 방법 및 이의 의학적 응용
    • 热固性聚(乙烯甘油)/聚氨酯嵌段共聚物水溶液,其制备方法及其生物医学应用
    • KR1020080017850A
    • 2008-02-27
    • KR1020060079581
    • 2006-08-22
    • 이화여자대학교 산학협력단
    • 정병문정유리박경현
    • C08G65/48C08G65/00C08G81/02C08G81/00
    • C08G65/48A61K9/1075A61K47/60A61L24/04C08G65/34C08G81/00C08G81/02
    • A temperature sensitive sol-gel transfer polyethylene glycol/polypeptide block copolymer, and a method for preparing the polyethylene glycol/polypeptide block copolymer are provided to improve the drug delivery efficiency by the transfer of the block copolymer from an aqueous solution to a hydrated gel at a specific temperature. A polyethylene glycol/polypeptide block copolymer comprises 40-80 wt% of a polyethylene glycol block having a number average molecular weight of 400-6,000 Dalton and 20-70 wt% of a polypeptide block having a number average molecular weight of 200-2,000 Dalton, and has a molecular weight of 500-30,000. Preferably the polyethylene glycol/polypeptide block copolymer has a structure of a polyethylene glycol-polypeptide, a polyethylene glycol,-polypeptide-polyethylene glycol, a polypeptide-polyethylene glycol-polyethylene glycol-polypeptide, or a (polyethylene glycol-polypeptide)n, wherein n is an integer of 2-30.
    • 提供温度敏感的溶胶 - 凝胶转移聚乙二醇/多肽嵌段共聚物和制备聚乙二醇/多肽嵌段共聚物的方法,以通过将嵌段共聚物从水溶液转移至水合凝胶来提高药物递送效率 一个特定的温度。 聚乙二醇/多肽嵌段共聚物包含40-80重量%的数均分子量为400-6,000道尔顿的聚乙二醇嵌段和20-70重量%的数均分子量为200-2,000道尔顿的多肽嵌段 ,分子量为500〜30,000。 优选地,聚乙二醇/多肽嵌段共聚物具有聚乙二醇 - 多肽,聚乙二醇,多肽 - 聚乙二醇,多肽 - 聚乙二醇 - 聚乙二醇 - 多肽或(聚乙二醇 - 多肽)n的结构,其中 n为2-30的整数。
    • 9. 发明授权
    • 온도 민감성 졸-젤 전이 폴리(에틸렌글리콜)/폴리(카보네이트) 블록 공중합체 및 이의 제조방법
    • 热固性聚(乙烯甘油)/聚碳酸酯嵌段共聚物及其制备方法
    • KR100795214B1
    • 2008-01-21
    • KR1020060079580
    • 2006-08-22
    • 이화여자대학교 산학협력단
    • 정병문김소영김현정
    • C08G64/18C08G64/00C08G65/00
    • A thermogelling poly(ethylene glycol)/polycarbonate block copolymer is provided to be present in a hydrosol form at temperature lower than bodily temperature but be changed into hydrogel at temperature higher than bodily temperature. A poly(ethylene glycol)/polycarbonate block copolymer comprises poly(ethylene glycol) blocks having a molecular weight of 500-3000 dalton and hydrophobic polycarbonate blocks having a molecular weight of 300-10,000 dalton, and has a molecular weight ranging from 1,000 to 50,000, a poly(ethylene glycol) content of 12-25wt%, and a polycarbonate content of 75-88wt%. A method for preparing the poly(ethylene glycol)/polycarbonate block copolymer includes the steps of: (1) changing the terminal group of poly(ethylene glycol) into a carboxylic acid group; and (2) reacting the carboxylic acid group with polycarbonate having hydroxyl groups at both terminals thereof.
    • 提供热凝胶聚(乙二醇)/聚碳酸酯嵌段共聚物以低于身体温度的水溶胶形式存在,但在高于身体温度的温度下变成水凝胶。 聚(乙二醇)/聚碳酸酯嵌段共聚物包含分子量为500-3000道尔顿的聚(乙二醇)嵌段和疏水性聚碳酸酯嵌段,分子量为300-10,000道尔顿,分子量为1,000至50,000 ,聚乙二醇含量为12-25重量%,聚碳酸酯含量为75-88重量%。 制备聚(乙二醇)/聚碳酸酯嵌段共聚物的方法包括以下步骤:(1)将聚(乙二醇)的端基改变为羧酸基; 和(2)使羧酸基与其两末端具有羟基的聚碳酸酯反应。