Catalyst component for the polymerization of olefins

    公开(公告)号:US5728641A

    公开(公告)日:1998-03-17

    申请号:US464655

    申请日:1995-06-21

    摘要: According to the present invention there are provided a catalyst component, a catalyst using the catalyst component and a process using the catalyst, for the preparation of olefin polymers high in molecular weight and relatively wide in molecular weight distribution, using an extremely small amount of a modified organoaluminum compound such as methylaluminoxane and in high yield. The catalyst component is prepared by contacting at least the following constituents (1), (2), (3) and (4) with one another: (1) a compound represented by the general formula Me.sup.1 R.sup.1.sub.p (OR.sup.2).sub.q X.sub.4-p-q where R.sup.1 and R.sup.2 are each independently a hydrocarbon group having 1 to 24 carbon atoms, X is a halogen atom, Me is Zr, Ti or Hf, p and q are each an integer in the ranges of 0.ltoreq.p.ltoreq.4 and 0.ltoreq.q.ltoreq.4, provided 0.ltoreq.p+q.ltoreq.4; (2) at least one compound selected from the group consisting of compounds represented by the following general formulas 1 to 4: General formula 1: Me.sup.2 R.sup.3.sub.m (OR.sup.4).sub.n X.sup.2.sub.z-m-n General formul 2: Me.sup.3 H.sub.2 R.sup.5.sub.3-a General formula 3: Me.sup.4 �Me.sup.3 H.sub.b R.sup.6.sub.c (OR.sup.7).sub.4-b-c !.sub.y General formula 4: ##STR1## where R.sup.3,R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8, which may be the same or different, are each independently a hydrocarbon group having 1 to 24 carbon atoms, Me.sup.2 is a Group 1, 2, 12 or 13 element in the Periodic Table of Elements, Me.sup.3 is a Group 13 element in the same Table, Me.sup.4 is a Group 1, 2, or 12 element in the same Table, X.sup.2 is a halogen atom, z is the valence of Me.sup.2, y is the valence of Me.sup.4, and m, n, a, b, c and d are each an integer in the ranges of 0.ltoreq.m.ltoreq.z, 0.ltoreq.n.ltoreq.z, provided 0.ltoreq.m+m.ltoreq.z, 0

    Catalyst component for the polymerization of olefins
    12.
    发明授权
    Catalyst component for the polymerization of olefins 失效
    用于烯烃聚合的催化剂组分

    公开(公告)号:US5556821A

    公开(公告)日:1996-09-17

    申请号:US276898

    申请日:1994-07-19

    摘要: According to the present invention there is provide a catalyst capable of affording an olefin homopolymer or copolymer having a high molecular weight and a relatively wide molecular weight distribution, in high yield, using an extremely small amount of a modified organoaluminum compound (particularly methylaluminoxane).The catalyst comprises the modified organoaluminum compound and a catalyst component comprising the following compounds (1) and (2): (1) a compound represented by the general formula R.sub.p MX.sub.4-p where M is a transition metal of Group IVa in the Periodic Table, R is cyclopentadienyl, substituted cyclopentadienyl, indenyl, substituted indenyl, or an aralkyl group having 7 to 24 carbon atoms, provided Rs may be bonded together through an alkylene groups having 2 to 8 carbon atoms and/or silylene group, X is a halogen atom, a hydrogen atom or a hydrocarbon residue having 1 to 24 carbon atoms, and p is a number satisfying the condition of 1.ltoreq.p.ltoreq.4; and (2) a compound containing carbon-fluorine bond.

    摘要翻译: 根据本发明,提供能够以极少量的改性有机铝化合物(特别是甲基铝氧烷)以高产率提供具有高分子量和相对较宽分子量分布的烯烃均聚物或共聚物的催化剂。 催化剂包含改性的有机铝化合物和包含以下化合物(1)和(2)的催化剂组分:(1)由通式RpMX4-p表示的化合物,其中M是元素周期表中IVa族的过渡金属, R是环戊二烯基,取代的环戊二烯基,茚基,取代的茚基或具有7至24个碳原子的芳烷基,其中R 5可以通过具有2-8个碳原子和/或亚甲硅基的亚烷基键合在一起,X是卤素原子 ,氢原子或碳原子数为1〜24的烃残基,p为满足1≤n≤4的条件的数。 和(2)含有碳 - 氟键的化合物。

    Device for stabilizing the attitude of an automobile
    13.
    发明授权
    Device for stabilizing the attitude of an automobile 失效
    用于稳定汽车姿态的装置

    公开(公告)号:US5263737A

    公开(公告)日:1993-11-23

    申请号:US814052

    申请日:1991-12-26

    IPC分类号: B60G17/015

    摘要: A device for stabilizing the attitude of an automobile having an automobile body and lefthand and right-hand road wheels which are rotatably supported on the automobile body, includes cylinder means independently disposed between the road wheels and the automobile body and having respective fluid chambers, the cylinder means being operable depending on fluid pressures in the fluid chambers, a communication pipe mechanism connectable for bringing the fluid chambers of the cylinder means into fluid communication with each other, valve means disposed in the communication pipe mechanism, for pressurizing a fluid in the communication pipe mechanism and controlling the direction of flow of the fluid in the communication pipe mechanism, detecting means including at least an automobile speed sensor for detecting the speed of travel of the automobile and a steering reactive force sensor for detecting a steering reactive force, and control means responsive to detected signals from the detecting means responsive to detected signals from the detecting means for controlling the valve means to transfer the fluid from the fluid chambers of the cylinder means which are located on a radially inner side of a turning circle when the automobile makes a turn into the fluid chambers of the cylinder means which are located on a radially outer side of the turning circle, thereby to stabilize the attitude of the automobile.

    摘要翻译: 一种用于稳定具有车辆的汽车的姿态的装置和可旋转地支撑在汽车车体上的左侧和右侧车轮的姿态,包括独立地设置在车轮和汽车车身之间的缸体装置,并且具有各自的流体室, 气缸装置可根据流体室中的流体压力操作;连通管机构,其可连接用于使气缸装置的流体室彼此流体连通;阀装置,设置在连通管机构中,用于对通信中的流体加压 管道机构,并控制连通管机构中的流体的流动方向,检测装置至少包括用于检测汽车行驶速度的汽车速度传感器和用于检测转向反作用力的转向反作用力传感器,以及控制 响应于来自检测的检测信号的装置 响应于来自检测装置的检测信号的装置,用于控制阀装置,以便当汽车转向进入所述流体室的流体室时,所述阀装置从位于转动圆周的径向内侧的气缸装置的流体室传递流体 气缸装置,其位于转向圆的径向外侧,从而稳定汽车的姿态。

    Process for producing polyethylene of ultrahigh molecular weight
    17.
    发明授权
    Process for producing polyethylene of ultrahigh molecular weight 失效
    生产超高分子量聚乙烯的方法

    公开(公告)号:US4923935A

    公开(公告)日:1990-05-08

    申请号:US302564

    申请日:1989-01-26

    CPC分类号: C08F10/02 C08F10/00

    摘要: A process for producing polyethylene of ultrahigh molecular weight having an intrinsic viscosity of 10-30 dl/g at 135.degree. C. in decalin is disclosed which comprises at least the following two stages of polymerization reaction: (a) a first reaction stage where in ethylene is polymerized with use of a catalyst comprising a solid component containing at least Mg, Ti and/or Va and in the absence or presence of hydrogen of reduced concentration to produce 70-99.5 weight parts of polyethylene having an intrinsic viscosity of 12-32 dl/g at 135.degree. C. in decalin; and (b) a second reaction stage wherein a fresh feed of ethylene is polymerized in the presence of hydrogen of higher concentration to produce 30-0.5 weight parts of polyethylene having an intrinsic viscosity of 0.1-5 dl/g at 135.degree. C. in decalin.

    摘要翻译: 公开了在135℃下在十氢萘中生产特性粘度为10-30dl / g的超高分子量聚乙烯的方法,其至少包括以下两个阶段的聚合反应:(a)第一反应阶段,其中在 使用包含至少含有Mg,Ti和/或Va的固体组分的催化剂和在还原浓度不存在或不存在的情况下使乙烯聚合,得到70-99.5重量份的特性粘度为12-32的聚乙烯 dl / g,135℃,十氢化萘; 和(b)第二反应阶段,其中乙烯的新鲜进料在较高浓度的氢气存在下聚合,以在135℃下产生特性粘度为0.1-5dl / g的30至0.5重量份的聚乙烯 十氢化萘

    Thermoplastic elastomer compositions
    20.
    发明授权
    Thermoplastic elastomer compositions 失效
    热塑性弹性体组合物

    公开(公告)号:US4822855A

    公开(公告)日:1989-04-18

    申请号:US81464

    申请日:1987-08-04

    摘要: A thermoplastic elastomer composition prepared by partially crosslinking a composition comprising the following components (A), (B) and (C):(A) 30-70 parts by weight of an ethylene/.alpha.-olefin copolymer prepared by copolymerizing ethylene and an .alpha.-olefin having 3 to 12 carbon atoms in the presence of a catalyst comprising a solid component and an organoaluminum compound which solid component contains at least magnesium and titanium, said ethylene/.alpha.-olefin copolymer having the following properties (I) to (IV):______________________________________ (I) Melt index 0.01-100 g/10 min (II) Density 0.860-0.910 g/cm.sup.3 (III) Maximum peak not lower than 100.degree. C. temperature as measured according to a differential scanning calorimetry (DSC) (IV) Insolubles in boiling not less than 10 wt. % n-hexane ______________________________________ (B) 70-30 parts by weight of a propylene polymer; and(C) 70-200 parts by weight, based on 100 parts by weight of the components (A) and (B), of an ethylene/.alpha.-olefin copolymer rubber.

    摘要翻译: 通过部分交联包含以下组分(A),(B)和(C)的组合物制备的热塑性弹性体组合物:(A)30-70重量份通过乙烯共聚合制备的乙烯/α-烯烃共聚物 所述乙烯/α-烯烃共聚物具有以下特性(I)至(IV),所述催化剂包含固体组分和有机铝化合物,所述有机铝化合物至少含有镁和钛, : - (I)熔体指数0.01-100g / 10min - (II)密度0.860-0.910g / cm3 - (III)最高峰不低于100℃ - 测量温度 - 根据差示扫描 - 量热法(DSC) - (Ⅳ)不溶物不溶于10重量% % - 正己烷 - (B)70-30重量份丙烯聚合物; 和(C)基于100重量份的组分(A)和(B))为70-200重量份的乙烯/α-烯烃共聚物橡胶。