Method for the preparation of silica glass
    11.
    发明授权
    Method for the preparation of silica glass 失效
    石英玻璃的制备方法

    公开(公告)号:US4883521A

    公开(公告)日:1989-11-28

    申请号:US249317

    申请日:1988-09-26

    摘要: An improved sol-gel method is proposed for the preparation of a transparent silica gel block, in which a deposit of fine silica particles having a controlled particle diameter as prepared by hydrolyzing an alkoxy silane in the presence of ammonia is dispersed in a silica sol solution prepared in an acidic condition and settled therein to form a structure of closest-packing prior to gelation, drying, sintering and vitrification so that silica glass blocks can be obtained with low volume shrinkage from the wet gel in an improved yield without cracks, bubbles and haziness. The improvement can be further enhanced when two separately prepared deposits of silica particles having larger and smaller particle diameters are dispersed as combined in the silica sol solution, especially, when the particle diameter in one deposit is not exceeding 22.5% of that in the other deposit.

    REACTOR FOR PRODUCING POLYCRYSTALLINE SILICON, SYSTEM FOR PRODUCING POLYCRYSTALLINE SILICON, AND PROCESS FOR PRODUCING POLYCRYSTALLINE SILICON
    12.
    发明申请
    REACTOR FOR PRODUCING POLYCRYSTALLINE SILICON, SYSTEM FOR PRODUCING POLYCRYSTALLINE SILICON, AND PROCESS FOR PRODUCING POLYCRYSTALLINE SILICON 有权
    用于制造多晶硅的反应器,用于生产多晶硅的系统和用于生产多晶硅的方法

    公开(公告)号:US20120237429A1

    公开(公告)日:2012-09-20

    申请号:US13496002

    申请日:2010-07-09

    IPC分类号: B01J19/00 C01B33/027

    摘要: An inner wall 11 of a reactor 10 has a two-layer structure: an anticorrosive layer 11a comprising an alloy material having high anticorrosiveness is provided on the inner side of the reactor contacting a corrosive process gas, and a heat conductive layer 11b for efficiently conducting the heat within the reactor 10 from an inner wall surface to a coolant flow passage 13 is provided on the outer side of the reactor (outer-wall side). The anticorrosive layer 11a comprises an alloy material having a composition for which a value R, defined by R=[Cr]+[Ni]−1.5 [Si], is not less than 40% wherein [Cr] is a mass content (% by mass) of chromium (Cr), [Ni] is a mass content (% by mass) of nickel (Ni), and [Si] is a mass content (% by mass) of silicon (Si).

    摘要翻译: 反应器10的内壁11具有两层结构:在与腐蚀性工艺气体接触的反应器的内侧设置有包括具有高防锈性的合金材料的防腐蚀层11a和用于有效导电的导热层11b 在反应器10的外侧(外壁侧)设置有从内壁面到冷却剂流路13的反应器10内的热量。 防腐层11a包括具有由R = [Cr] + [Ni] -1.5 [Si]定义的值R为40%以上的组成的合金材料,其中[Cr]为质量含量(% (Cr),[Ni]为镍(Ni)的质量含量(质量%),[Si]为硅(Si)的质量含量(质量%)。

    METHOD FOR PRODUCING TRICHLOROSILANE AND METHOD FOR PRODUCING POLYCRYSTALLINE SILICON
    13.
    发明申请
    METHOD FOR PRODUCING TRICHLOROSILANE AND METHOD FOR PRODUCING POLYCRYSTALLINE SILICON 有权
    生产三氯硅烷的方法和生产多晶硅的方法

    公开(公告)号:US20090057129A1

    公开(公告)日:2009-03-05

    申请号:US12135487

    申请日:2008-06-09

    IPC分类号: B01D3/34

    摘要: A hydrogenation reaction vessel makes STC-containing substance react with hydrogen to convert the substance into TCS. A low boils removal column separates a chlorosilane distillate discharged from a hydrogenation reaction vessel into TCS and a mixture distillate containing hyper-hydrogenated chlorosilane, and circulates the mixture distillate containing hyper-hydrogenated chlorosilane to the hydrogenation reaction vessel. The mixture distillate containing the hyper-hydrogenated chlorosilane separated in the low boils removal column is circulatingly supplied to the hydrogenation reaction vessel. Accordingly, low boils by-product conventionally wasted is circulated and recycled in the process, which results in enhancing a yield of TCS production.

    摘要翻译: 加氢反应容器使含STC的物质与氢反应,将物质转化为TCS。 低沸点去除塔将从氢化反应容器排出的氯硅烷馏出物分离成TCS和含有高氢氯硅烷的混合物馏出物,并将含有高氢化氯硅烷的混合物馏出物循环到氢化反应容器中。 将含有在低沸点去除塔中分离的高氢化氯硅烷的混合物馏出物循环供给到氢化反应器。 因此,通常浪费的低沸点副产物在该过程中循环和循环,这导致提高TCS生产的产率。

    Silacyclohexane compound, a method of preparing it and a liquid crystal
composition containing it
    15.
    发明授权
    Silacyclohexane compound, a method of preparing it and a liquid crystal composition containing it 失效
    硅环己烷化合物,其制备方法和含有它的液晶组合物

    公开(公告)号:US5868961A

    公开(公告)日:1999-02-09

    申请号:US514085

    申请日:1995-08-11

    CPC分类号: C09K19/42 C09K19/406

    摘要: A silacyclohexane compound represented by the following general formula (I). ##STR1## In this formula, R denotes a linear-chain alkyl group with 1-10 carbon atoms, a branched-chain alkyl group with 3-8 carbon atoms, a mono- or di-fluoroalkyl group with 1-10 carbon atoms, an alkoxyalkyl group with 2-7 carbon atoms, or an alkenyl group with 2-8 carbon atoms. ##STR2## is trans-1-silacyclohexylene or trans-4-silacyclohexylene group whose silicon at position 1 or position 4 has a substitutional group(s) of H, F, Cl or CH.sub.3. X denotes a R, OR, CN, F, Cl, CF.sub.3, CF.sub.2 Cl, CHFCl, OCF.sub.3, OCHF.sub.2, OCF.sub.2 Cl, OCHFCl, --(O).sub.m --CY.sub.1 .dbd.CX.sub.1 X.sub.2 (m denotes 0 or 1, Y.sub.1 and X.sub.1 respectively denote H, F or Cl, and X.sub.2 denotes F or Cl) or --O--C.sub.r F.sub.s H.sub.2r+1-s is (r denotes an integral of 2 to 4 and s denotes an integral of 1 to 7) group. Y denotes H or F. Z denotes H or F.

    摘要翻译: 由以下通式(I)表示的硅环己烷化合物。 (1)在该式中,R表示具有1-10个碳原子的直链烷基,具有3-8个碳原子的支链烷基,具有1-10个碳原子的单 - 或二 - 氟代烷基 碳原子,具有2-7个碳原子的烷氧基烷基或具有2-8个碳原子的链烯基。 其中1位或4位的硅具有H,F,Cl或CH 3的取代基的反式-1-硅杂环己烯或反式-4-硅环己基。 X表示R,OR,CN,F,Cl,CF 3,CF 2 Cl,CHFCl,OCF 3,OCHF 2,OCF 2 Cl,OCHFCl, - (O)m -CY1 = CX1X2(m表示0或1,Y1和X1分别表示H ,F或Cl,X2表示F或Cl)或-O-CrFsH2r + 1-s是(r表示2〜4的整数,s表示1〜7的整数)。 Y表示H或F.Z表示H或F.

    Silacyclohexane compound, a method of preparing it and a liquid cyrstal
composition containing it
    19.
    发明授权
    Silacyclohexane compound, a method of preparing it and a liquid cyrstal composition containing it 失效
    硅环己烷化合物,其制备方法和含有它的液体硅藻土组合物

    公开(公告)号:US5567350A

    公开(公告)日:1996-10-22

    申请号:US383368

    申请日:1995-02-03

    摘要: A silacyclohexane compound of formula (I): ##STR1## wherein R denotes a linear-chain alkyl group, a mono- or di-fluoroalkyl group, a branched-chain alkyl group, an alkoxyalkyl group, or an alkenyl group: at least one of ##STR2## denotes a 1-sila-1,4-cyclohexylene or a 4-sila-1,4-cyclohexylene group whose silicon at position 1 or 4 is H, F, Cl or CH.sub.3, and the other denotes a 1,4-cyclohexylene group, a 1-sila-1,4-cyclohexylene or a 4-sila-1,4-cyclohexylene group whose silicon at position 1 or 4 is H F, Cl or CH.sub.3 ; X denotes a substitutional group at an equatorial position, specifically CN, an alkyl group with its end group replaced by a trifluoromethyl group, an alkoxy group, an alkanoyloxy group, an alkoxycarbonyl group, a linear-chain alkyl group, or an alkoxyalkyl group; Y denotes a group at an axial position, specifically H or CN when Y is connected to a carbon atom in said (B) group or H, F, Cl or CH.sub.3 when Y is connected to a silicon atom in said (B) group.

    摘要翻译: 式(I)的硅环己烷化合物:其中R表示直链烷基,单或二氟烷基,支链烷基,烷氧基烷基或烯基: “IMAGE”中的至少一个表示1-硅环-1,4-亚环己基或4-硅烷-1,4-亚环己基,其1或4位的硅为H,F,Cl或CH 3,另一个表示 位置1或4的硅为HF,Cl或CH3的1,4-亚环己基,1-硅烷-1,4-亚环己基或4-硅烷-1,4-亚环己基; X表示赤道位置的取代基,特别是CN,其端基被三氟甲基,烷氧基,烷酰氧基,烷氧基羰基,直链烷基或烷氧基烷基取代的烷基。 当Y连接到所述(B)基团中的硅原子时,Y表示在轴向位置的基团,特别是H或CN,当Y连接到所述(B)基团中的碳原子或H,F,Cl或CH 3时。

    Process for preparing silacyclohexane compounds
    20.
    发明授权
    Process for preparing silacyclohexane compounds 失效
    硅环己烷化合物的制备方法

    公开(公告)号:US5560866A

    公开(公告)日:1996-10-01

    申请号:US491141

    申请日:1995-06-16

    CPC分类号: C09K19/406 C07F7/083

    摘要: A process for preparing a silacyclohexane compound of the general formula ##STR1## wherein R and Q are, respectively, defined substituents, which process comprising the steps of converting a compound of the following formula ##STR2## to a halosilacyclohexane of the following formula ##STR3## wherein X is a halogen, reacting the halosilacyclohexane with an alcohol to obtain an alkoxysilacyclohexane of the formula which is equilibrated in steric configuration, and ##STR4## reducing the equilibrated alkoxysilacyclohexane whereby a trans form silacyclohexane compound is predominantly produced.

    摘要翻译: 制备通式为“IMAGE”的硅环己烷化合物的方法,其中R和Q分别为限定的取代基,该方法包括以下步骤:将下式的化合物转化为下式的卤代环己烷:IMA IMA >其中X是卤素,使卤代二环己烷与醇反应,得到在空间结构中平衡的式的烷氧基硅烷环己烷,并且还原平衡的烷氧基硅烷环己烷,由此主要生产反式形式的硅环己烷化合物。