Catalyst component for olefin polymerization and catalyst comprising the same
    1.
    发明授权
    Catalyst component for olefin polymerization and catalyst comprising the same 有权
    用于烯烃聚合的催化剂组分和包含其的催化剂

    公开(公告)号:US09243086B2

    公开(公告)日:2016-01-26

    申请号:US13501585

    申请日:2010-10-18

    摘要: A catalyst component for olefin polymerization is disclosed, which comprises a reaction product of the following components: (1) a spheric carrier; (2) a titanium compound; and optionally, (3) an electron donor, wherein the spheric carrier comprises a reaction product of at least the following components: (a) a magnesium halide represented by a general formula of MgX2-nRn, wherein X is independently chloride or bromide, R is a C1-C14 alkyl, a C6-C14 aryl, a C1-C14 alkoxy, or a C6-C14 aryloxy, and n is 0 or 1; (b) an alcohol compound; and (c) an epoxy compound represented by a general formula (I), wherein R2 and R3 are independently hydrogen, a C1-C5 linear or branched alkyl, or a C1-C5 linear or branched haloalkyl. When the catalyst of the invention is used in olefin polymerization, in particular in propylene polymerization, at least one of the following desired effects can be achieved: high polymerization activity of catalyst, high stereospecificity of catalyst, good hydrogen response of catalyst, high stereoregularity of polymer having high melt index, and low content of polymer fines.

    摘要翻译: 公开了用于烯烃聚合的催化剂组分,其包含以下组分的反应产物:(1)球形载体; (2)钛化合物; 并且任选地,(3)电子给体,其中所述球载体包含至少以下组分的反应产物:(a)由通式MgX 2 -nR n表示的卤化镁,其中X独立地是氯或溴,R 是C 1 -C 14烷基,C 6 -C 14芳基,C 1 -C 14烷氧基或C 6 -C 14芳氧基,n是0或1; (b)醇化合物; 和(c)由通式(I)表示的环氧化合物,其中R2和R3独立地是氢,C1-C5直链或支链烷基或C1-C5直链或支链卤代烷基。 当本发明的催化剂用于烯烃聚合时,特别是在丙烯聚合中,可以达到以下期望效果中的至少一个:催化剂的高聚合活性,催化剂的高立体定向性,催化剂的氢气响应良好,立体定向性高 聚合物具有高熔体指数,低含量的聚合物细粉。

    Vehicle signalling apparatus
    8.
    发明授权
    Vehicle signalling apparatus 失效
    车辆信号装置

    公开(公告)号:US6043740A

    公开(公告)日:2000-03-28

    申请号:US125667

    申请日:1998-08-20

    申请人: Boon Yang Tan

    发明人: Boon Yang Tan

    IPC分类号: B60Q1/30 B60Q1/34

    CPC分类号: B60Q1/30

    摘要: This device for giving and controlling a vehicle U-turn signal comprises a U-turn signal indicator (1) and a control circuit. The U-turn signal indicator (1) can consist of an array of LEDs which makes a loop circuit with an arrow. One can be mounted on the front plate (2) of a vehicle, and another one can be mounted on the back plate. The control circuit consists of a rectifier, a first integrator, a second integrator, a counter, a switching transistor, and a relay. The output of the rectifier is connected to the inputs of the first and second integrators of which the outputs are connected to the CLK and to the RST of the counter respectively. The outputs of the counter and the rectifier are connected to the inputs of the NAND which controls the on or off working state of the switching transistor and the relay, to activate the U-turn indicator. The input of the rectifier is connected to the turn signal pulses of a vehicle. When certain pulse patterns are generated, the U-turn signal indicator is activated.

    摘要翻译: PCT No.PCT / SG97 / 00007 Sec。 371日期:1998年8月20日 102(e)1998年8月20日PCT PCT 1996年2月24日PCT公布。 公开号WO97 / 30869 日期:1997年8月28日这种用于给予和控制车辆U形转向信号的装置包括U形转向信号指示器(1)和控制电路。 U形转向信号指示器(1)可以由LED阵列组成,其形成具有箭头的回路电路。 一个可以安装在车辆的前板(2)上,另一个可以安装在后板上。 控制电路由整流器,第一积分器,第二积分器,计数器,开关晶体管和继电器组成。 整流器的输出端连接到第一和第二积分器的输入,其输出分别连接到CLK和计数器的RST。 计数器和整流器的输出端连接到控制开关晶体管和继电器的导通或截止工作状态的NAND的输入端,以激活U形转向指示器。 整流器的输入连接到车辆的转向信号脉冲。 当产生某些脉冲模式时,U形转向信号指示器被激活。