Recovery of imageable polyacetylenes from binder containing aqueous
dispersions
    2.
    发明授权
    Recovery of imageable polyacetylenes from binder containing aqueous dispersions 失效
    从含有水分散体的粘合剂中回收可成像聚乙炔

    公开(公告)号:US5147787A

    公开(公告)日:1992-09-15

    申请号:US228426

    申请日:1988-08-05

    IPC分类号: G03F7/025 G03F7/26

    CPC分类号: G03F7/025 G03F7/26

    摘要: This invention relates to a process for the recovery of a substantially insoluble, radiation imageable polyacetylene dispersion in aqueous binder which comprises contacting the dispersion with a proteolylic enzyme in an amount sufficient to decompose the binder, at a pH of from about 3 to about 9 and a temperature of between about 20.degree. C. and about 70.degree. C. and separating polyacetylene solids from the resulting liquid mixture, and which solids can be solubilized and recrystallized for further use.

    摘要翻译: 本发明涉及一种在水性粘合剂中回收基本上不溶的可辐射聚合乙炔分散体的方法,该方法包括使该分散体与足以分解粘合剂的量的蛋白多糖酶在约3至约9的pH下接触, 温度在约20℃至约70℃之间,并从所得液体混合物中分离出聚乙炔固体,并将该固体溶解并重结晶以供进一步使用。

    Radiation dosage indicator
    4.
    发明授权
    Radiation dosage indicator 失效
    辐射剂量指标

    公开(公告)号:US5051597A

    公开(公告)日:1991-09-24

    申请号:US477585

    申请日:1990-02-09

    IPC分类号: G01J1/50 G01T1/06

    CPC分类号: G01J1/50 G01T1/06

    摘要: A multi-ply radiation dosage indicator, and method of manufacture, is disclosed including a first ply having visible indicia thereon and a second ply having a radiation sensitive zone overlying the indicia of the first ply. The radiation sensitive zone is capable of changing opacity in response to exposure to a radiation dosage exceeding a predetermined threshold so as to change the visibility of the indicia thereby providing an indication as to whether the indicator has become irradiated. An optical filter ply may be provided overlying the indicia, and the indicator also may be provided with a transparent protective outer ply. A pressure sensitive adhesive ply having a removable release sheet is employed for attaching the indicator to a substrate.

    摘要翻译: 公开了一种多层辐射剂量指示剂及其制造方法,包括其上具有可见标记的第一层和具有覆盖第一层标记的辐射敏感区的第二层。 辐射敏感区域能够响应于暴露于超过预定阈值的辐射剂量而改变不透明度,以便改变标记的可见度,从而提供关于指示剂是否已经照射的指示。 可以在标记上方设置滤光片层,并且指示器还可以设置有透明的保护性外层。 使用具有可移除的脱模片的压敏粘合剂层将指示剂附接到基底。