Multi-component polyolefin catalysts
    3.
    发明授权
    Multi-component polyolefin catalysts 失效
    多组分聚烯烃催化剂

    公开(公告)号:US5714424A

    公开(公告)日:1998-02-03

    申请号:US370045

    申请日:1995-01-09

    CPC分类号: C08F210/16 C08F10/00

    摘要: The present invention encompasses a monolithic multi-component composite polyolefin catalyst particle comprising at least two distinct supported catalyst components wherein each catalyst component is capable of producing a resin having a melt index different from at least one other catalyst component under constant reaction conditions. Methods of producing and using the multi-component catalyst are disclosed.

    摘要翻译: 本发明包括一种整体式多组分复合聚烯烃催化剂颗粒,其包含至少两种不同的负载催化剂组分,其中每个催化剂组分能够在恒定的反应条件下产生具有与至少一种其它催化剂组分不同的熔体指数的树脂。 公开了生产和使用多组分催化剂的方法。

    Compositions for polishing silicon and germanium
    4.
    发明授权
    Compositions for polishing silicon and germanium 失效
    用于抛光硅和锗的组合物

    公开(公告)号:US4260396A

    公开(公告)日:1981-04-07

    申请号:US869402

    申请日:1978-01-16

    申请人: Rimantas Glemza

    发明人: Rimantas Glemza

    CPC分类号: H01L21/30625 C09K3/1463

    摘要: A composition for polishing silicon and germanium comprises a synthetic amorphous silica polishing agent and a suspending agent selected from the group consisting of water-soluble carboxypolymethylene gums and xanthum gums. The composition may be used for polishing in the form of an aqueous alkaline slurry.

    摘要翻译: 用于研磨硅和锗的组合物包括合成的无定形二氧化硅抛光剂和选自水溶性羧基聚亚甲基树胶和黄原胶的悬浮剂。 该组合物可用于以碱性水溶液的形式进行抛光。

    Hydrous silica gel containing dentifrice
    6.
    发明授权
    Hydrous silica gel containing dentifrice 失效
    含有硅胶的含水硅胶

    公开(公告)号:US4303641A

    公开(公告)日:1981-12-01

    申请号:US909149

    申请日:1978-05-24

    摘要: Dentifrice compositions containing a hydrous silica gel having a water content of from about 20 to about 60 weight percent are disclosed. The abrasiveness of the gel is increased by contacting the gel with an alkaline medium to provide a gel pH of about 6 to about 10 and/or preparing the gel by drying and grinding a silica hydrogel that has been washed with an aqueous acidic solution having a temperature of from about 80.degree. to about 100.degree. F.

    摘要翻译: 公开了含有水含量为约20至约60重量%的含水硅胶的牙粉组合物。 通过使凝胶与碱性介质接触以提供约6至约10的凝胶pH和/或通过干燥和研磨已经用具有下列物质的酸性水溶液洗涤的二氧化硅水凝胶来制备凝胶来增加凝胶的磨损性 温度为约80°至约100°F