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    • 7. 发明授权
    • STRAIN-PROMOTED CROSSLINKING OF PEG-BASED HYDROGELS VIA COPPER-FREE CYCLOADDITION
    • 基于PEG的水凝胶通过无铜循环应变促进交联
    • EP2879716B1
    • 2017-05-17
    • EP13825218.4
    • 2013-07-31
    • The University of Akron
    • WEISS, Robert A.BECKER, Matthew
    • A61K47/34C08L89/00C08L71/02C08L71/00C08G65/333C08G65/325A61K9/06
    • C08L71/00A61K9/06A61K47/34C08G65/325C08G65/33389C08L71/02C08L89/00C08L2205/02
    • The present invention is directed to a covalently crosslinked hydrogel comprising the strain-promoted reaction product of an 8-member cycloalkyne functionalized polyalkylene glycol and a multi-arm glycerol exytholate triazide and methods for making them. Because the precursor materials can be manipulated without causing crosslinking, provided the strain threshold is not reached, these hydrogels permit mechanical control over when (and where) cross linking occurs and are easier to use than prior strain-activated or temperature-activated systems. These novel hydrogels do not require a catalyst to cross link, thus avoiding the biocompatibility problems common to many catalysts. Nor is the crosslinking process affected by the presence of catalysts or other substances, which have interfered with crosslinking in known strain induced hydrogels. Because of their crosslinking reaction kinetics, these novel hydrogels can encapsulate and transport highly sensitive cells and other biological additives and have no known toxic byproducts.
    • 本发明涉及一种共价交联的水凝胶及其制备方法,所述共价交联的水凝胶包含八元环炔烃官能化聚亚烷基二醇和多臂甘油三乙醇胺三嗪的菌株促进反应产物。 由于可以在不引起交联的情况下操纵前体材料,只要没有达到应变阈值,这些水凝胶允许机械控制何时(和哪里)发生交联并且比之前的应变激活或温度激活系统更容易使用。 这些新颖的水凝胶不需要催化剂交联,从而避免了许多催化剂常见的生物相容性问题。 交联过程也不受存在催化剂或其他物质影响,这些物质干扰了已知应变诱导水凝胶中的交联。 由于它们的交联反应动力学,这些新颖的水凝胶可以包封和运输高度敏感的细胞和其他生物添加剂,并且没有已知的有毒副产物。