Process for the removal of iodine and organic iodine compounds from
gases and vapors using silver-containing zeolite of the faujasite type
    2.
    发明授权
    Process for the removal of iodine and organic iodine compounds from gases and vapors using silver-containing zeolite of the faujasite type 失效
    使用八面沸石类的含银沸石从气体和蒸气中除去碘和有机碘化合物的方法

    公开(公告)号:US4913850A

    公开(公告)日:1990-04-03

    申请号:US318841

    申请日:1989-03-06

    CPC classification number: B01D53/68

    Abstract: Iodine and organic iodine compounds which may be radioactive and which may be found in waste gases or vapors from nuclear reactors can be removed from such gases or vapors by passing the iodine or organic iodine compound-containing gases or vapors through a layer of binder-free silver-exchanged molecular sieve granulates of the faujasite type.

    Abstract translation: 可以通过使含碘或有机碘化合物的气体或蒸汽通过一层无粘合剂的物质,可以从这种气体或蒸气中除去可能是放射性的并且可能存在于来自核反应堆的废气或蒸汽中的碘和有机碘化合物 银盐交换分子筛颗粒的八面沸石型。

    Colloidal metal oxides having blocked isocyanate groups
    9.
    发明授权
    Colloidal metal oxides having blocked isocyanate groups 失效
    具有封端异氰酸酯基团的胶体金属氧化物

    公开(公告)号:US5998504A

    公开(公告)日:1999-12-07

    申请号:US54590

    申请日:1998-04-03

    Abstract: The present invention relates to colloidal metal oxides having blocked isocyanate groups, which are based on the reaction product ofA) blocked isocyanate group-containing silanes corresponding to formula (I) ##STR1## wherein R represents hydrogen or an organic group having 1 to 40 carbon atoms,X, Y and Z represent identical or different organic groups having 1 to 30 carbon atoms which are inert to isocyanate groups below 100.degree. C., provided that at least one of these groups is a C.sub.1 -C.sub.4 -alkoxy group,Q represents an organic group which contains at least one isocyanate group reacted with a blocking agent andn is 2, 3 or 4 withB) colloidal metal oxides selected from Al, Si, Ti, Ta, W, Hf, Zr, Sn and Y.The present invention also relates to the use of modified metal oxides, either alone or in combination with compounds containing at least two isocyanate-reactive groups, for the preparation of optionally expanded polyurethane plastics, lacquers or coating agents.

    Abstract translation: 本发明涉及具有封端异氰酸酯基团的胶态金属氧化物,其基于A)封端异氰酸酯基硅烷对应于其中R表示氢或具有1至40个碳原子的有机基团的式(I)的反应产物, X,Y和Z表示相同或不同的具有1至30个碳原子的有机基团,其对于低于100℃的异氰酸酯基团是惰性的,条件是这些基团中的至少一个是C 1 -C 4 - 烷氧基,Q表示有机 含有至少一个与封闭剂反应的异氰酸酯基团的基团,n为2,3或4,B)选自Al,Si,Ti,Ta,W,Hf,Zr,Sn和Y的胶态金属氧化物。本发明 还涉及使用改性金属氧化物,单独或与含有至少两个异氰酸酯反应性基团的化合物组合,用于制备任选发泡的聚氨酯塑料,漆或涂层剂。

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