Process for the preparation of partially-substituted fluorosilane
    1.
    发明授权
    Process for the preparation of partially-substituted fluorosilane 失效
    制备部分取代的氟硅烷的方法

    公开(公告)号:US5346682A

    公开(公告)日:1994-09-13

    申请号:US156702

    申请日:1993-11-24

    IPC分类号: C01B33/107 C01G9/04 C01B33/08

    CPC分类号: C01B33/107 C01G9/04

    摘要: A process is provided by the present invention for the preparation of a partially-substituted fluorosilane represented by the following formula: SiH.sub.n F.sub.4-n wherein n stands for an integer of 1 to 3. The process comprises converting a corresponding partially-substituted chlorosilane represented by the following formula: SiH.sub.n Cl.sub.4-n wherein n has the same meaning as defined above into the partially-substituted fluorosilane by halogen replacement while using a fluorinating agent. The fluorinating agent is zinc fluoride having a water content not higher than 0.2 wt. %. Preferably, the size of crystallites in the direction of a (110) plane of the zinc fluoride is at least 500 .ANG..

    摘要翻译: 本发明提供了制备由下式表示的部分取代的氟硅烷的方法:SiHnF4-n,其中n表示1至3的整数。该方法包括将相应的部分取代的氟代硅烷代替 下式:SiHnCl4-n其中n具有与上述相同的含义,在使用氟化剂时通过卤素取代进行部分取代的氟硅烷。 氟化剂是水含量不高于0.2重量%的氟化锌。 %。 优选地,在氟化锌的(110)面方向上的微晶尺寸为至少500埃。

    Method and Apparatus for Producing Porous Silica
    3.
    发明申请
    Method and Apparatus for Producing Porous Silica 审中-公开
    多孔二氧化硅生产方法和装置

    公开(公告)号:US20090179357A1

    公开(公告)日:2009-07-16

    申请号:US11989776

    申请日:2006-08-10

    IPC分类号: B29C67/00

    摘要: There are provided a method for producing porous silica and a porous silica film having low specific dielectric constant and high mechanical strength, that are preferably applicable to optical functional materials, electronic functional materials or the like, and a method for producing an interlayer insulating film, a semiconductor material and a semiconductor apparatus and a producing apparatus, which use the porous silica film. A solution containing a hydrolysis-condensation product of alkoxysilanes and a surfactant is dried to form a composite to which are then applied in the following order an ultraviolet ray irradiation treatment and a hydrophobic treatment with the use of an organic silicon compound having an alkyl group. By forming the composite by drying the solution on a substrate, the porous silica film is obtained.

    摘要翻译: 提供一种多孔二氧化硅的制造方法和比较介电常数高,机械强度高的多孔二氧化硅膜,优选适用于光功能材料,电子功能材料等,以及制造层间绝缘膜的方法, 使用多孔二氧化硅膜的半导体材料和半导体装置及制造装置。 将包含烷氧基硅烷和表面活性剂的水解缩合产物的溶液干燥以形成复合材料,然后按照以下顺序施加紫外线照射处理和使用具有烷基的有机硅化合物的疏水处理。 通过在基材上干燥溶液形成复合体,得到多孔二氧化硅膜。

    Method for purifying nitrogen trifluoride gas
    4.
    发明授权
    Method for purifying nitrogen trifluoride gas 失效
    纯化三氟化氮气体的方法

    公开(公告)号:US4933158A

    公开(公告)日:1990-06-12

    申请号:US425957

    申请日:1989-10-24

    IPC分类号: C01B21/083

    CPC分类号: C01B21/0837

    摘要: There is here disclosed a method for removing nitrous oxide (N.sub.2 O), carbon dioxide (CO.sub.2) and dinitrogen difluoride (N.sub.2 F.sub.2) from a nitrogen trifluoride gas. The present invention is directed to a method for purifying a nitrogen trifluoride gas which comprises the steps of thermally treating, at a temperature of 250.degree. to 700.degree. C., a zeolite selected from the group consisting of analcime, clinoptilolite, mordenite, ferrierite, phillipsite, chabazite, erionite and laumotite; forming a packed bed of the treated zeolite; and passing the nitrogen trifluoride gas containing the gaseous impurities at a temperature of -125.degree. to 50.degree. C. through the filler layer.