High surface area meixnerite from hydrotalcites infiltrated with metal
salts
    3.
    发明授权
    High surface area meixnerite from hydrotalcites infiltrated with metal salts 失效
    来自水滑石的高表面积的镁盐浸入金属盐中

    公开(公告)号:US5750453A

    公开(公告)日:1998-05-12

    申请号:US771461

    申请日:1996-12-20

    IPC分类号: B01J21/10 B01J23/70 B01J21/02

    CPC分类号: B01J21/10 B01J23/70

    摘要: A method for making a synthetic mixed metal oxide or meixnerite which, when activated, has a high B.E.T. surface area, typically about 290 m.sup.2 /g or greater. The method comprises activating hydrotalcite, then cooling and hydrating such activated material with a metal salt solution in a carbon dioxide-free environment. Such hydration can produce a material that absorbs more than 100% of its weight in water. Following hydration, this material is activated a second time in a virtually carbon dioxide-free environment. Such reactivation decomposes the salt and leaves a supported metal oxide readily available to be used for catalyst reactions.

    摘要翻译: 一种制造合成的混合金属氧化物或镁石的方法,其在活化时具有高B.E.T. 通常约290m 2 / g或更大。 该方法包括活化水滑石,然后在无二氧化碳的环境中用金属盐溶液冷却和水合这种活化的材料。 这种水合可以产生在水中吸收超过其重量的100%的材料。 水合后,该物质在几乎无二氧化碳的环境中再次被激活。 这种再活化使盐分解并留下易于用于催化剂反应的负载金属氧化物。

    Phosphite stabilizers for polyester resins
    10.
    发明授权
    Phosphite stabilizers for polyester resins 失效
    聚酯树脂的亚磷酸酯稳定剂

    公开(公告)号:US4385145A

    公开(公告)日:1983-05-24

    申请号:US322506

    申请日:1981-11-18

    CPC分类号: C08K5/527

    摘要: Poly(alkylene terephthalate) compositions containing a stabilizing proportion of a pentaerythritol diphosphite ester. The compositions are relatively stable under usual processing conditions which include high temperatures. Color formation, molecular degradation and acetaldehyde contamination are inhibited significantly.

    摘要翻译: 含有稳定化比例的季戊四醇二亚磷酸酯的聚(对苯二甲酸亚烷基酯)组合物。 组合物在包括高温的通常加工条件下相对稳定。 颜色形成,分子降解和乙醛污染受到显着抑制。