Process for continuously producing propylene-based block copolymer
    71.
    发明授权
    Process for continuously producing propylene-based block copolymer 失效
    连续生产丙烯基嵌段共聚物的方法

    公开(公告)号:US5859143A

    公开(公告)日:1999-01-12

    申请号:US843653

    申请日:1997-04-16

    摘要: A process for continuously producing a propylene-based block copolymer having an excellent impact resistance of the present invention, comprises:a first polymerization step comprising polymerizing .alpha.-olefin comprising propylene in the presence of hydrogen and a stereoregular polymerization catalyst comprising a solid catalyst component containing magnesium, titanium, halogen atom and an electron-donor compound, an organoaluminum compound and, if required, an electron-donar compound in a single polymerization reactor; anda second polymerization step comprising transporting .alpha.-olefin polymer obtained in the first polymerization step to a copolymerization reactor and copolymerizing propylene with .alpha.-olefin other than propylene in a gas phase substantially in the presence of said stereoregular polymerization catalyst used in the first polymerization step.

    摘要翻译: 连续生产本发明耐冲击性优异的丙烯类嵌段共聚物的方法包括:第一聚合步骤,包括在氢气存在下聚合包含丙烯的α-烯烃和立体规则聚合催化剂,其包含含有 镁,钛,卤素原子和电子给体化合物,有机铝化合物和如果需要,在单一聚合反应器中的电子 - 和第二聚合步骤,包括将在第一聚合步骤中获得的α-烯烃聚合物输送到共聚反应器中,并将丙烯与除丙烯之外的α-烯烃在气相中共聚,基本上在第一聚合步骤中使用的所述立体规则聚合催化剂存在下 。

    Method for oligomerizing an .alpha.-olefin
    72.
    发明授权
    Method for oligomerizing an .alpha.-olefin 失效
    低聚α-烯烃的方法

    公开(公告)号:US5557026A

    公开(公告)日:1996-09-17

    申请号:US509140

    申请日:1995-07-31

    摘要: A method for oligomerizing an .alpha.-olefin in the presence of a catalyst comprising a specific chromium compound including chromium atom and pyrrolyl group and an alkylaluminum compound, wherein the .alpha.-olefin is contacted to the chromium compound and the alkylaluminum compound without preliminarily contacting the chromium compound to either the .alpha.-olefin or the alkylaluminum compound.

    摘要翻译: 在包含铬原子和吡咯基的特定铬化合物和烷基铝化合物的催化剂存在下使α-烯烃低聚的方法,其中α-烯烃与铬化合物和烷基铝化合物接触而不预先接触铬 化合物与α-烯烃或烷基铝化合物。

    Image forming apparatus having detachable sheet cassette
    73.
    发明授权
    Image forming apparatus having detachable sheet cassette 失效
    具有可拆卸片材盒的图像形成装置

    公开(公告)号:US5294106A

    公开(公告)日:1994-03-15

    申请号:US931270

    申请日:1992-08-17

    CPC分类号: B65H1/04 B65H2601/11

    摘要: An image forming apparatus in which probability of sheet jamming is reduced and jammed sheet can be easily removed. The apparatus is provided with a guide plate, a movable guide plate defining a sheet feed passage therebetween, and a first sheet feed roller. A detachable sheet cassette is provided for attachment to a main body portion of the apparatus. In the sheet cassette, are provided a second sheet feed roller and a leaf spring which urges the second sheet feed roller toward the first sheet feed roller when the sheet cassette is attached to the main body portion. The sheet feed passage is opened by pivotal movement of the movable guide plate when the sheet cassette is detached from the main body portion, to thereby facilitate removal of the jamming sheet from the sheet feed passage.

    摘要翻译: 可以容易地去除其中片材卡住的概率减少并且卡住的片材的图像形成装置。 该装置设置有引导板,在其间限定片材进给通道的可移动引导板和第一片材进给辊。 提供了可拆卸的纸盒,用于附接到装置的主体部分。 在片材盒中设置有第二片材进给辊和板簧,当片材盒安装到主体部分时,板簧将第二片材进给辊推向第一片材进给辊。 当片材盒从主体部分拆卸时,片材进给通道由可动导板的枢转运动打开,从而便于从片材进给通道中取出卡纸。

    Electrodeposition process
    74.
    发明授权
    Electrodeposition process 失效
    电沉积工艺

    公开(公告)号:US4113581A

    公开(公告)日:1978-09-12

    申请号:US801640

    申请日:1977-05-31

    CPC分类号: C25C5/04 C25D3/66

    摘要: An electroposition process wherein solid metallic particles are produced in a fused salt electrolytic bath and dispersed therein to electrodeposit a metal or alloy thereof on a cathode so that the surface of the deposit is maintained smooth and flat. In order to produce particles of a desired metal or alloy, an auxiliary electrolytic means may be provided within an electrolytic cell so that such particles are generated in situ within the fused bath of such cell.

    摘要翻译: 一种电镀方法,其中固体金属颗粒在熔盐电解浴中产生并分散在其中以将金属或其合金电沉积在阴极上,使得沉积物的表面保持平滑和平坦。 为了产生期望的金属或合金的颗粒,可以在电解池内提供辅助电解装置,使得这种颗粒在该电池的熔池内就地产生。

    Electrodepositing method
    75.
    发明授权
    Electrodepositing method 失效
    电沉积法

    公开(公告)号:US4049507A

    公开(公告)日:1977-09-20

    申请号:US613513

    申请日:1975-09-15

    CPC分类号: C25D5/18 C25D5/04 Y10S204/09

    摘要: An electrodeposition method of electrodepositing a material with a flat and smooth surface, in which an electrolytic condition such as a speed of movement of a cathode relative to an electrolyte, an electrolytic current density, a duty ratio of an interrupted electrolytic current or an interruption frequency of an electrolytic current is changed periodically from a normal value to another value and back again.

    摘要翻译: 电沉积方法,电沉积具有平坦光滑表面的材料,其中电解条件例如阴极相对于电解质的运动速度,电解电流密度,电解电流中断的占空比或中断频率 的电解电流从正常值周期性地改变到另一个值并再次返回。