Process for producing low density gel compositions
    1.
    发明授权
    Process for producing low density gel compositions 失效
    生产低密度凝胶组合物的方法

    公开(公告)号:US06172120B2

    公开(公告)日:2001-01-09

    申请号:US08826982

    申请日:1997-04-09

    IPC分类号: B01J1300

    CPC分类号: B01J13/0052 B01J13/0091

    摘要: Processes for producing gel compositions comprising: esterifying a portion of the surface of a gel composition sufficient to produce a gel composition having a rod density of less than or equal to 0.15 g/cc, and/or a tap density of less than or equal to 0.2 g/cc through contact with at least one esterification agent and at least one catalyst. The processes may be utilized to produce low density gel compositions without the need for a supercritical drying step or thermal treatment.

    摘要翻译: 用于生产凝胶组合物的方法,包括:将足以产生棒密度小于或等于0.15g / cc的凝胶组合物的一部分表面凝胶化,和/或振实密度小于或等于 通过与至少一种酯化剂和至少一种催化剂接触来制备0.2g / cc。 该方法可用于生产低密度凝胶组合物,而不需要超临界干燥步骤或热处理。

    Process for producing low density gel compositions
    2.
    发明授权
    Process for producing low density gel compositions 失效
    生产低密度凝胶组合物的方法

    公开(公告)号:US06315971B1

    公开(公告)日:2001-11-13

    申请号:US08826979

    申请日:1997-04-09

    IPC分类号: C01B33158

    CPC分类号: B01J13/0056 B01J13/0091

    摘要: Disclosed are processes for producing gel composition which may be utilized to produce low density gel compositions without the need for supercritical drying, thermal treatment or surface treatment. The processes comprise drying a wet gel comprising gel solids and a drying agent to remove the drying agent while minimizing shrinkage of the gel during drying.

    摘要翻译: 公开了可用于生产低密度凝胶组合物而不需要超临界干燥,热处理或表面处理的凝胶组合物的方法。 该方法包括干燥包含凝胶固体和干燥剂的湿凝胶以除去干燥剂,同时使干燥期间凝胶的收缩最小化。

    Polyol-based precursors for producing nanoporous silica thin films
    7.
    发明授权
    Polyol-based precursors for producing nanoporous silica thin films 失效
    用于生产纳米多孔二氧化硅薄膜的多元醇前体

    公开(公告)号:US6090448A

    公开(公告)日:2000-07-18

    申请号:US111082

    申请日:1998-07-07

    摘要: The invention relates to nanoporous dielectric films and to a process for their manufacture. Such films are useful in the production of integrated circuits. Such films are produced from a precursor of an alkoxysilane; a relatively low volatility solvent composition comprising an ether of a C.sub.1 to C.sub.4 alkylene glycol which is miscible in water and alkoxysilanes, having a hydroxyl concentration of 0.021 mole/cm.sup.3 or less, a boiling point of about 175 .degree. C. or more at atmospheric pressure and a weight average molecular weight of about 100 or more; a relatively high volatility solvent composition having a boiling point below that of the relatively low volatility solvent composition; optional water and an optional catalytic amount of an acid.

    摘要翻译: 本发明涉及纳米多孔介电膜及其制造方法。 这种膜可用于集成电路的生产。 这种膜由烷氧基硅烷的前体制成; 一种相对低挥发性的溶剂组合物,其包含羟基浓度为0.021摩尔/厘米3或更低,在大气压下约175℃或更高的沸点的可与水混合的C1至C4亚烷基二醇醚和烷氧基硅烷 并且重均分子量为约100或更大; 挥发性相对较低的溶剂组合物,其沸点低于相对低挥发性溶剂组合物的沸点; 任选的水和任选的催化量的酸。