Homogeneous radiopaque polymer-organobismuth composites
    5.
    发明授权
    Homogeneous radiopaque polymer-organobismuth composites 失效
    均匀不透射线聚合物 - 有机铋复合材料

    公开(公告)号:US5256334A

    公开(公告)日:1993-10-26

    申请号:US843126

    申请日:1992-02-28

    摘要: Novel radiopaque materials and a method for their preparation are described. The radiopaque materials comprise composites of polymers and heavy metal-containing organic compounds, which heavy metal containing compounds have the following formula: ##STR1## wherein X is a heavy metThis invention was made with Government support under research Grant No. NIH-1-RO1-DEO6179001A1 awarded by the National Institutes of Health. The Government has certain rights in this invention.

    摘要翻译: 描述了新型不透射线材料及其制备方法。 不透射线材料包括聚合物和含重金属的有机化合物的复合材料,其中含重金属的化合物具有下式:其中X是重金属; R1,R2和R3可以相同或不同,并且分别选自苯基,卤素取代的苯基,烷基取代的苯基,芳基取代的苯基,酯取代的苯基,烯取代的苯基,甲硅烷基和甲基丙烯酸甲酯, 当R 3不与R 1和R 2相同时,选自卤素,烷基,烯烃,酯和羧酸。 永久性和不可漂洗性的复合材料不会对组合物的机械和物理性能产生不利影响。 它们可用作医疗和牙科树脂,制造医疗和牙科器具,假肢装置,辐射屏蔽装置和用于服装的不透射线的聚酯织物。

    Hydrosilylation of unsaturated aliphatic isocyanates
    6.
    发明授权
    Hydrosilylation of unsaturated aliphatic isocyanates 失效
    不饱和脂族异氰酸酯的氢化硅烷化

    公开(公告)号:US5157095A

    公开(公告)日:1992-10-20

    申请号:US722079

    申请日:1991-06-27

    申请人: Johannes Smid

    发明人: Johannes Smid

    IPC分类号: C08G77/388 C08G83/00

    摘要: Disclosed herein are novel polyorganosiloxanes, both linear and cyclic, havingpendant thereon isocyanate groups derived from specific .alpha.,.alpha.-dimethyl isopropenyl benzyl isocyanates. Also disclosed is a method for production of said polyorganosiloxanes.The disclosed polyorganosiloxanes are useful as crosslinking agents and as intermediates in the production of star polymers, starburst dendrimers, urethanes and ureas.

    摘要翻译: 本文公开了新型的线性和环状聚有机硅氧烷,其上具有衍生自特定α,α-二甲基异丙烯基苄基异氰酸酯的异氰酸酯基团。 还公开了一种生产所述聚有机硅氧烷的方法。 所公开的聚有机硅氧烷可用作交联剂,并且可用作生产星形聚合物,星形树枝状聚合物,聚氨酯和脲的中间体。