Wound covering
    1.
    发明授权
    Wound covering 失效
    伤口覆盖

    公开(公告)号:US5035893A

    公开(公告)日:1991-07-30

    申请号:US440197

    申请日:1989-11-22

    摘要: The present invention relates to a wound covering comprising a sheet of biopolymeric material and a film of a polyurethane resin obtained by reacting a diisocyanate and a random copolymer of tetrahydrofuran and ethylene oxide to produce a urethane prepolymer, and extending the molecular chain of said prepolymer by using a chain extender, said random copolymer containing 20 to 80% by weight of the ethylene oxide unit in the molecular chain thereof and having a number-average molecular weight of 800 to 3000.The wound covering of the present invention is excellent in adhesion flexibility, durability, easy handling, preservation, sterile filtration, compatibility with cell, blood starching, water-vapor permeability. Therefore, it is quite suitable for practical use.

    摘要翻译: 本发明涉及包含生物聚合物材料片和通过二异氰酸酯与四氢呋喃和环氧乙烷的无规共聚物反应得到的聚氨酯树脂的薄膜以产生氨基甲酸酯预聚物并将所述预聚物的分子链延伸通过 使用扩链剂,所述无规共聚物含有20〜80重量%的分子链中的环氧乙烷单元,数均分子量为800〜3000。本发明的伤口覆盖物具有优异的粘合柔韧性 ,耐久性,易于处理,保存,无菌过滤,与细胞相容性,血液淀粉,水蒸气渗透性。 因此,适用于实际应用。