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    • 1. 发明授权
    • Membrane formed by an acrylonitrile-based polymer
    • 由丙烯腈基聚合物形成的膜
    • US06180007B2
    • 2001-01-30
    • US09016518
    • 1998-01-31
    • Frank GentileMolly ShoichetMilton Harris
    • Frank GentileMolly ShoichetMilton Harris
    • C08L2044
    • C08L71/02C08F8/12C08G81/025C08J5/2268C08J2327/06C08J2371/02C08F20/44C08L2666/24C08L2666/04
    • A permselective graft polymer is disclosed that is formed by converting into intermediate reactive sites a portion of the cyano groups of a backbone polymer containing —CH2—CH(—C≡N)— units, and grafting polyalkylene oxide polymer chains to the backbone polymer through the reactive sites. Either the backbone polymer of a polymer resin or a permselective polymer membrane can be grafted. When a resin is used, it is formed into a permselective polymer membrane using known methods. The resulting permselective membrane can be formed into hollow fibers or flat sheets for the encapsulation of living cells. The encapsulated cells are then implanted into a patient in need of the biologically active factors produced by the cells. The permselective graft polymer membrane exhibits good molecular diffusion with minimal protein adsorption.
    • 公开了通过将包含-CH 2 -CH(-C = N) - 单元的主链聚合物的一部分氰基转化为中间反应性位点而形成的选择性接枝聚合物,并且将聚环氧烷聚合物链通过 反应场地。 聚合物树脂或选择性聚合物膜的主链聚合物可以被接枝。 当使用树脂时,使用已知的方法将其形成为选择性选择性聚合物膜。 所得到的选择性渗透膜可以形成用于活细胞包封的中空纤维或平板。 然后将包封的细胞植入需要由细胞产生的生物活性因子的患者体内。 选择性接枝聚合物膜表现出良好的分子扩散和最小的蛋白质吸附。