α-olefin polymerization catalyst system and its use for the polymerization of α-olefins
    11.
    发明授权
    α-olefin polymerization catalyst system and its use for the polymerization of α-olefins 失效
    α-烯烃聚合催化剂体系及其在α-烯烃聚合中的应用

    公开(公告)号:US06872682B1

    公开(公告)日:2005-03-29

    申请号:US09890357

    申请日:2000-02-11

    摘要: A catalyst system for the polymerization of α-olefins prepared by a process which includes catalyst activation whereby a solid transitional metal compound is contacted with an organoaluminum compound and catalyst prepolymerization whereby a premonomer is prepolymerized in the presence of the activated catalyst. High activity, low fines polymerization can be achieved if in the first step of catalyst activation a first reaction mixture is prepared by contacting the solid transitional metal compound with a first organoaluminum compound in the presence of an oil and in the second step, the first reaction mixture is contacted with a second organoaluminum compound to give a second reaction mixture, the second organoaluminum compound being the same as or different from the first organoaluminum compound.

    摘要翻译: 用于通过包括催化剂活化的方法制备的α-烯烃聚合的催化剂体系,其中固体过渡金属化合物与有机铝化合物接触,催化剂预聚合,由此在活化催化剂存在下将预聚单体预聚合。 如果在催化剂活化的第一步骤中,通过在油的存在下使固体过渡金属化合物与第一有机铝化合物接触来制备第一反应混合物,并且在第二步骤中,第一反应 混合物与第二有机铝化合物接触,得到第二反应混合物,第二有机铝化合物与第一有机铝化合物相同或不同。

    Process for producing propylene based polymer compositions
    13.
    发明授权
    Process for producing propylene based polymer compositions 失效
    制备丙烯基聚合物组合物的方法

    公开(公告)号:US06770714B2

    公开(公告)日:2004-08-03

    申请号:US10240997

    申请日:2003-03-06

    IPC分类号: C08F800

    摘要: A process for the production of a propylene based polymer, the process comprising the following steps: (a) a first polymerization stage comprising homopolymerizing propylene or copolymerizing propylene and at least one alpha-olefin in the presence of an alpha-olefin polymerization catalyst whereby to produce a polypropylene component; (b) a second polymerization stage comprising copolymerizing ethylene and at least one alpha-olefin in the presence of an alpha-olefin polymerization catalyst whereby to produce an ethylene/alpha-olefin copolymer component; and (c) blending the polymer components produced in steps (a) and (b) whereby to produce a polymer blend, wherein the first and second polymerization stages are effected in separate polymerization reactors connected in parallel. Also provided are polymer compositions comprising: (i) 30 to 97% by weight, based on the total weight of the polymer composition, of a propylene based polymer; and (ii) 3 to 70% by weight, preferably 5 to 20% by weight, based on the total weight of the polymer composition, of an ethylene copolymer plastomer (e.g., an ethylene-propylene plastomer) containing at least 60% by weight ethylene.

    摘要翻译: 一种制备丙烯基聚合物的方法,该方法包括以下步骤:(a)第一聚合阶段,包括在α-烯烃聚合催化剂存在下使丙烯均聚或丙烯与至少一种α-烯烃共聚合, 生产聚丙烯组分; (b)第二聚合阶段,包括在α-烯烃聚合催化剂存在下共聚乙烯和至少一种α-烯烃,从而制备乙烯/α-烯烃共聚物组分; 和(c)共混步骤(a)和(b)中制备的聚合物组分,由此制备聚合物共混物,其中第一和第二聚合阶段在分开的并联连接的聚合反应器中进行。 还提供了聚合物组合物,其包含:(i)基于聚合物组合物的总重量为30至97重量%的基于丙烯的聚合物; 和(ii)基于聚合物组合物的总重量,3-70重量%,优选5-20重量%的乙烯共聚物塑性体(例如,乙烯 - 丙烯塑性体)含有至少60重量% 乙烯。

    Propylene terpolymers
    14.
    发明授权
    Propylene terpolymers 有权
    丙烯三元共聚物

    公开(公告)号:US06552149B2

    公开(公告)日:2003-04-22

    申请号:US10036728

    申请日:2001-12-21

    IPC分类号: C08F21006

    摘要: A process for producing terpolymers of propylene, comprising a) feeding into a slurry reactor a reaction mixture containing 50-85 w-% of propylene, 1-10 w-% of ethylene, 15-40 w-% of another C4-C8 alpha-olefin, a catalyst system maintaining olefin polymerization at said temperature conditions, and optionally hydrogen, b) polymerizing said reaction mixture at a temperature of lower than 70° C. a sufficient time to obtain a propylene terpolymer amounting to 50-99 w-% of the end product, c) transferring said reaction mixture into a gas phase reactor operating at a pressure of higher than 5 bars, preferably higher than 10 bars, optionally adding 0-30 w-% of ethylene, 0-10 w-% of another C4-C8 alpha-olefin, 0-40 w-% of propylene and optionally hydrogen, and d) continuing polymerization in said gas phase reactor for obtaining a propylene terpolymer amounting to 1-50 wt-% of the end product. The terpolymer has a melting temperature a less than 135° C., preferably less than 132° C., and it can be used for manufacturing films having good sealing properties.

    摘要翻译: 一种生产丙烯三元共聚物的方法,包括:a)向淤浆反应器中加入含有50-85%(重量)丙烯,1-10%乙烯,15-40%(重量)另一种C 4 -C 8α- 烯烃,在所述温度条件下保持烯烃聚合的催化剂体系,以及任选的氢气,b)在低于70℃的温度下将所述反应混合物聚合足够的时间以获得总共为50-99w-%的丙烯三元共聚物 的最终产物,c)将所述反应混合物转移到在高于5巴,优选高于10巴的压力下操作的气相反应器,任选地加入0-30重量%的乙烯,0-10重量%的乙烯, 另外的C 4 -C 8α-烯烃,0-40%(重量)的丙烯和任选的氢,和d)在所述气相反应器中连续聚合,得到总共1-50%(重量)最终产物的丙烯三元共聚物。 三元共聚物的熔融温度小于135℃,优选小于132℃,可用于制造具有良好密封性能的膜。

    Process of producing &agr;-olefin polymers
    18.
    发明授权
    Process of producing &agr;-olefin polymers 有权
    生产α-烯烃聚合物的方法

    公开(公告)号:US06689846B1

    公开(公告)日:2004-02-10

    申请号:US09959651

    申请日:2001-11-02

    IPC分类号: C08F238

    摘要: The present invention relates to a process for polymerizing &agr;-olefins in at least two stages, the first stage comprising at least one bulk reactor and optionally at least one gas phase reactor for forming the &agr;-olefin polymer matrix and the second stage comprising at least one additional gas phase reactor for copolymerization of ethylene with said polymer matrix. In the second stage an antifouling composition is fed into said gas phase reactor(s) for preventing fouling in the second stage.

    摘要翻译: 本发明涉及在至少两个阶段中聚合α-烯烃的方法,第一阶段包括至少一个本体反应器和任选的至少一个用于形成α-烯烃聚合物基质的气相反应器,第二阶段至少包括 一个用于使乙烯与所述聚合物基质共聚的另外的气相反应器。 在第二阶段中,将防污组合物进料到所述气相反应器中以防止第二阶段的结垢。