Preparation of easily stripped off temporary wound dressing materials by
radiation grafting
    1.
    发明授权
    Preparation of easily stripped off temporary wound dressing materials by radiation grafting 失效
    准备通过辐射移植容易剥离临时伤口敷料

    公开(公告)号:US6022330A

    公开(公告)日:2000-02-08

    申请号:US880744

    申请日:1997-06-23

    IPC分类号: A61L15/24 A61F5/04 A61F13/04

    CPC分类号: A61L15/24

    摘要: A novel method of preparation of easily stripped off temporary wound dressing material is disclosed. In this process, the-N-isopropyl acrylamide (NIPAAm) monomer is successfully grafted on the non-woven cloths by copolymerization. It is initiated by .gamma.-ray irradiation to activate the surface of the non-woven cloth. NIPAAm is then grafted onto the surface of the non-woven cloth. The free radical or peroxide is produced by Co-60 .gamma.-ray, then grafted on the non-woven cloths. The lower critical solution temperature (LCST) in thermoresponsive poly-N-isopropylacrylamide (NIPAAm) is still retained after the grafting. This will make the dressing cloth stripped off easily and without hurting the tissue. The material process is very simple and has medically applicable value.

    摘要翻译: 公开了一种制备易剥离的临时伤口敷料的新方法。 在该方法中,N-异丙基丙烯酰胺(NIPAAm)单体通过共聚成功地接枝在无纺布上。 通过γ射线照射开始激活无纺布的表面。 然后将NIPAAm接枝到无纺布的表面上。 自由基或过氧化物由Co-60γ射线产生,然后接枝在无纺布上。 热反应性聚-N-异丙基丙烯酰胺(NIPAAm)中的临界溶解温度较低(LCST)在接枝后仍然保留。 这样可以使敷料容易剥离,而不伤害组织。 材料过程非常简单,具有医学上适用的价值。

    Synthesis of poly(l-leucine)
    2.
    发明授权
    Synthesis of poly(l-leucine) 失效
    聚(1-亮氨酸)的合成

    公开(公告)号:US5541237A

    公开(公告)日:1996-07-30

    申请号:US393895

    申请日:1995-02-24

    IPC分类号: C08G69/10 C08J3/28

    CPC分类号: C08G69/10

    摘要: The invention relates to a method for synthesis of poly(L-leucine). Without any initiator and solvent poly(L-leucine) has been made from L-leucine-N-carboxy anhydride as starting material in the solid state by irradiation with gamma ray. There is only one step in the entire synthetic processing, and the polymerization yield is 100% and the process is a very simple, safe and convenient method. The poly(L-leucine) is one of the best materials for temporary wound dressing.

    摘要翻译: 本发明涉及聚(L-亮氨酸)的合成方法。 没有任何引发剂和溶剂,通过用γ射线照射,通过L-亮氨酸-N-羧酸酐作为固体状态的原料制成聚(L-亮氨酸)。 整个合成加工只有一步,聚合产率为100%,工艺简单,安全,方便。 聚(L-亮氨酸)是临时伤口敷料最好的材料之一。