Process of producing self-supported catalysts
    2.
    发明授权
    Process of producing self-supported catalysts 失效
    生产自支撑催化剂的工艺

    公开(公告)号:US06677265B1

    公开(公告)日:2004-01-13

    申请号:US09595634

    申请日:2000-06-16

    IPC分类号: C08F402

    摘要: The process features concurrent feeds into the liquid phase of a prepolymerization reaction mixture. These feeds are: a) separate continuous or substantially continuous feeds of (i) a polymerizable vinylolefin, and (ii) a solution in an organic liquid solvent of a metallocene and an aluminoxane and/or metallocene-aluminoxane reaction product; or b) separate continuous or substantially continuous feeds of (i) a polymerizable vinylolefin, (iii) a metallocene optionally in an organic liquid solvent or diluent, and (iv) an aluminoxane optionally in an organic liquid solvent or diluent; or c) separate continuous or substantially continuous feeds of (i) and (ii) and at least one of (iii) and (iv). Particles of catalytically-active, prepolymerized, self-supported olefin polymerization catalyst composition are formed in the reaction medium. The metallocene used as the feed or in making up the feed has at least one polymerizable olefinic substituent in the molecule.

    摘要翻译: 该方法同时进料到预聚合反应混合物的液相中。 这些进料是:a)分离的连续或基本上连续的进料,其中(i)可聚合的含氟烯烃,和(ii)金属茂和铝氧烷和/或茂金属 - 铝氧烷反应产物的有机液体溶剂中的溶液; (i)可聚合的烯烃,(iii)任选在有机液体溶剂或稀释剂中的茂金属,和(iv)任选在有机液体溶剂或稀释剂中的铝氧烷的连续或基本上连续的进料; (i)和(ii)和(iii)和(iv)中的至少一种的单独的连续或基本上连续的进料。在反应介质中形成催化活性的,预聚合的,自负载的烯烃聚合催化剂组合物的颗粒 。 用作原料或用于补充原料的茂金属在分子中具有至少一个可聚合的烯属取代基。

    Separation of 2,4-toluenediamine from an isomeric mixture of toluenediamines
    3.
    发明授权
    Separation of 2,4-toluenediamine from an isomeric mixture of toluenediamines 失效
    从甲苯二胺的异构体混合物中分离2,4-甲苯二胺

    公开(公告)号:US06469212B1

    公开(公告)日:2002-10-22

    申请号:US09531210

    申请日:2000-03-20

    IPC分类号: C07C20900

    CPC分类号: C07C209/86 C07C211/50

    摘要: A mixture comprised of about 60-85% of 2,4-toluenediamine (2,4-TDA) and about 15-40% of 2,6-toluenediamine (2,6-TDA) is melted, the temperature of the mixture is lowered to a 2,4-TDA nucleation temperature, and the temperature of the mixture is gradually reduced from the nucleation temperature to about 65 to about 70° C. The resultant mixture is in the form of a solids phase enriched in 2,4-TDA, and a novel and useful liquid phase enriched in 2,6-TDA. These phases are separated. Preferably the solids are further purified by “sweating” them and removing the sweated liquid impurities. The sweated liquid can be recycled together with another charge of a mixture comprised of 2,4-TDA and 2,6-TDA. 2,4-TDA can be produced with a purity of 96-99%.

    摘要翻译: 将由约60-85%的2,4-甲苯二胺(2,4-TDA)和约15-40%的2,6-甲苯二胺(2,6-TDA)组成的混合物熔化,混合物的温度为 降低至2,4-TDA成核温度,并且混合物的温度从成核温度逐渐降低至约65至约70℃。所得混合物为富含2,4-二甲酸的固体相的形式, TDA,以及富含2,6-TDA的新型有用的液相。 这些阶段是分开的。 优选地,通过将​​它们“出汗”并除去出汗的液体杂质来进一步纯化固体。 可以将出汗的液体与另一种由2,4-TDA和2,6-TDA组成的混合物一起再循环。 可以生产纯度为96-99%的2,4-TDA。

    Process for preparing polysilicon with diminished hydrogen content by
using a two-step heating process
    4.
    发明授权
    Process for preparing polysilicon with diminished hydrogen content by using a two-step heating process 失效
    通过使用两步加热方法制备具有降低的氢含量的多晶硅的方法

    公开(公告)号:US5326547A

    公开(公告)日:1994-07-05

    申请号:US53527

    申请日:1993-04-26

    CPC分类号: C01B33/029 C01B33/037

    摘要: The hydrogen content of polysilicon can be reduced by heat treatment. The process is preferably conducted on polysilicon particles in bead-like form produced by chemical vapor deposition in a fluidized bed. The heat treatment is preferably conducted at a temperature of 1020.degree.-1200.degree. C. for a time from about 6 hours to about 1 hour sufficient to reduce the hydrogen content, and insufficient to cause agglomeration of the particles being treated. In order to reduce the tendency of particles to agglomerate at the process temperature employed, the particle bed is preferably maintained in motion during the dehydrogenation. The products produced by the process can have a hydrogen content of 30 ppma or less. These improved products can be used to produce monocrystalline silicon for the production of semiconductor devices.

    摘要翻译: 通过热处理可以减少多晶硅的氢含量。 该方法优选在通过化学气相沉积在流化床中产生的珠状形式的多晶硅颗粒上进行。 热处理优选在1020〜1200℃的温度下进行约6小时至约1小时的时间,足以降低氢含量,并且不足以引起被处理颗粒的团聚。 为了降低所使用的加工温度下颗粒聚集的倾向,优选在脱氢过程中保持颗粒床运动。 通过该方法生产的产品可以具有30ppma或更低的氢含量。 这些改进的产品可用于制造用于生产半导体器件的单晶硅。

    Fluidized bed reactor
    6.
    发明授权
    Fluidized bed reactor 失效
    流化床反应器

    公开(公告)号:US4806317A

    公开(公告)日:1989-02-21

    申请号:US59562

    申请日:1987-06-08

    摘要: An apparatus for maintaining the purity of solid/granular product and dispensing high purity granular product from a vessel. A noncontaminating surface is provided by a cup, cylinder, or other structure having a surface of silicon, silicon carbide, silicon nitride, sialon, or similar materials and preferably operates as an angle of repose valve in a pressurized system to prevent contamination by undue contact of the high purity product with conventional gastight valves such as ball valves, butterfly valves, pinch valves, etc.

    摘要翻译: 用于保持固体/颗粒产品的纯度并从容器中分配高纯度颗粒产品的装置。 不含污染的表面由具有硅,碳化硅,氮化硅,塞隆或其他类似材料的表面的杯,圆柱体或其它结构提供,并且优选作为加压系统中的休止角操作,以防止由于不适当的接触而引起的污染 的高纯度产品与传统气密阀,如球阀,蝶阀,夹管阀等。

    PREPARATION OF DECAHALODIPHENYL ETHANE
    7.
    发明申请
    PREPARATION OF DECAHALODIPHENYL ETHANE 审中-公开
    十氢二苯乙烯的制备

    公开(公告)号:US20080058458A1

    公开(公告)日:2008-03-06

    申请号:US11840293

    申请日:2007-08-17

    IPC分类号: C07C25/00 C08K5/03

    CPC分类号: C09K21/08 C07C17/12 C07C25/18

    摘要: This invention provides a process of preparing reaction-derived decahalodiphenylethane of high purity. The process comprises cofeeding separate feeds of (a) diphenylethane and (b) bromine chloride, bromine chloride and bromine, or bromine chloride and chlorine to a refluxing reaction mixture comprising bromine and at least one Lewis acid bromination catalyst so that high purity decahalodiphenylethane is formed.

    摘要翻译: 本发明提供了制备高纯度的反应衍生的十氢二苯基乙烷的方法。 该方法包括将(a)二苯基乙烷和(b)溴氯化物,溴氯化物和溴或溴氯化物和氯的单独进料共进料到包含溴和至少一种路易斯酸溴化催化剂的回流反应混合物中,从而形成高纯度的十氢二苯基乙烷 。

    Angle of repose valve
    8.
    发明授权
    Angle of repose valve 失效
    安静角阀

    公开(公告)号:US5202099A

    公开(公告)日:1993-04-13

    申请号:US426846

    申请日:1989-10-26

    摘要: An apparatus and process for maintaining the purity of solid/granular product and dispensing high purity granular product from a vessel. A noncontaminating surface is provided by a cup, cylinder, or other structure having a surface of silicon, silicon carbide, silicon nitride, sialon, or similar materials and preferably operates as an angle of repose valve in a pressurized system to prevent contamination by undue contact of the high purity product with conventional gastight valves such as ball valves, butterfly valves, pinch valves, etc.

    摘要翻译: 用于保持固体/颗粒产物的纯度并从容器中分配高纯度颗粒产品的装置和方法。 不含污染的表面由具有硅,碳化硅,氮化硅,塞隆或其他类似材料的表面的杯,圆柱体或其它结构提供,并且优选作为加压系统中的休止角操作,以防止由于不适当的接触而引起的污染 的高纯度产品与传统气密阀,如球阀,蝶阀,夹管阀等。

    Production of silicon
    9.
    发明授权
    Production of silicon 失效
    生产硅

    公开(公告)号:US5059410A

    公开(公告)日:1991-10-22

    申请号:US221657

    申请日:1988-07-20

    摘要: An apparatus and process for maintaining the purity of solid/granular product and dispensing high purity granular product from a vessel. A noncontaminating surface is provided by a cup, cylinder, or other structure having a surface of silicon, silicon carbide, silicon nitride, sialon, or similar materials and preferably operates as an angle of repose valve in a pressurized system to prevent contamination by undue contact of the high purity product with conventional gastight valves such as ball valves, butterfly valves, pinch valves, etc.

    摘要翻译: 用于保持固体/颗粒产物的纯度并从容器中分配高纯度颗粒产品的装置和方法。 不含污染的表面由具有硅,碳化硅,氮化硅,塞隆或其他类似材料的表面的杯,圆柱体或其它结构提供,并且优选作为加压系统中的休止角操作,以防止由于不适当的接触而引起的污染 的高纯度产品与传统气密阀,如球阀,蝶阀,夹管阀等。