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    • 1. 发明授权
    • Propylene block copolymer
    • 丙烯嵌段共聚物
    • US06225414B1
    • 2001-05-01
    • US08868539
    • 1997-06-04
    • Takanori KumeKazuki WakamatsuEisuke Shiratani
    • Takanori KumeKazuki WakamatsuEisuke Shiratani
    • C08F29708
    • C08F297/083C08F210/16C08F2/001C08F2/34
    • A polypropylene block copolymer obtained by producing an ethylene-propylene copolymer moiety as a component A having an ethylene content of 1.5 to 6.0% by weight in an amount of 40 to 85% by weight based on the total weight of components A and B in the absence of an inert solvent, substantially, in a first step, with a Ziegler-Natta catalyst, and then producing an ethylene-propylene copolymer moiety as a component B having an ethylene content of 7 to 17% by weight in an amount of 15 to 60% by weight based on an amount of the whole polymer in a gas phase in a second step, wherein an intrinsic viscosity ([&eegr;]B) of the component B is from 2.0 to 5.0 dl/g and the ratio of the intrinsic viscosity ([&eegr;]B) of the component B to an intrinsic viscosity ([&eegr;]A) of the component A is within the range of 0.5 to 1.8.
    • 一种聚丙烯嵌段共聚物,它通过以乙烯 - 丙烯共聚物部分作为组分A生产乙烯含量为基于A组分和B组分总重量的40至85重量%的重量百分数为1.5至6.0重量% 基本上不用惰性溶剂,在第一步中,用齐格勒 - 纳塔催化剂,然后制备乙烯 - 丙烯共聚物部分作为组分B,其乙烯含量为7至17重量%,用量为15至 60重量%,基于第二工序中的气相中的全部聚合物的量,其中,成分B的特性粘度(ηB)为2.0〜5.0dl / g,特性粘度 组分B的(ηB)与组分A的特性粘度(ηA)在0.5至1.8的范围内。
    • 5. 发明授权
    • Continuous production method of propylene-based block copolymer
    • 丙烯基嵌段共聚物的连续制备方法
    • US06646044B1
    • 2003-11-11
    • US09805769
    • 2001-03-16
    • Fuminao WatanabeEiji TanakaJun Hosoi
    • Fuminao WatanabeEiji TanakaJun Hosoi
    • C08F29708
    • C08F297/08Y10S526/902Y10S526/905
    • A stable continuous production of a propylene-based block copolymer can proceed for a long time without causing accumulation of particles having a small diameter by a process having the following steps: (1) polymerizing an &agr;-olefin containing liquid propylene as a main component in the presence of hydrogen and a stereoregular polymerization catalyst in one or more polymerization reactors to obtain a polymer slurry; (2) feeding the polymer slurry to a copolymerization reactor; and (3) copolymerizing propylene and an &agr;-olefin other than propylene substantially in a gaseous phase in the presence of the stereoregular polymerization catalyst, the polymer slurry and a deactivating compound in the copolymerization reactor to obtain a propylene-block copolymer powder. The polymer slurry, discharged from one of said one or more polymerization reactors and is classified using a classification system to obtain a) a classified polymer slurry containing a large amount of particles having a small particle diameter and b) a classified polymer slurry containing a large amount of particles having a large particle diameter. A main part of the classified polymer slurry containing a large amount of particles having a small particle diameter is recycled to a final polymerization reactor of the one or more polymerization reactors.
    • 丙烯类嵌段共聚物的稳定连续生产可以进行很长时间,而不会通过具有以下步骤的方法积累具有小直径的颗粒:(1)将含有α-烯烃的液体丙烯作为主要成分聚合 在一个或多个聚合反应器中存在氢和立体规则聚合催化剂以获得聚合物浆料; (2)将聚合物浆料进料到共聚反应器中; 和(3)在立体规则聚合催化剂,聚合物浆料和失活化合物存在下,在共聚反应器中共聚丙烯和丙烯以外的基本上气相的α-烯烃,得到丙烯 - 嵌段共聚物粉末。 从所述一个或多个聚合反应器之一排出的聚合物浆料,并使用分级体系进行分级,以获得a)含有大量具有小粒径的颗粒的分级聚合物浆料和b)含有大量颗粒的分级聚合物浆料 具有大粒径的粒子的量。 含有大量具有小粒径的颗粒的分级聚合物浆料的主要部分被循环到一个或多个聚合反应器的最终聚合反应器中。
    • 6. 发明授权
    • Olefin polymerization catalyst and process for preparing polypropylene and propylene block copolymer
    • 烯烃聚合催化剂和制备聚丙烯和丙烯嵌段共聚物的方法
    • US06214939B1
    • 2001-04-10
    • US09089116
    • 1998-06-03
    • Tetsunori ShinozakiMamoru Kioka
    • Tetsunori ShinozakiMamoru Kioka
    • C08F29708
    • C08F297/083C08F10/06C08F110/06C08F210/06Y02P20/52Y10S526/904C08F4/6492C08F4/6494C08F4/6465C08F2500/17C08F2500/12C08F2500/15C08F2500/18C08F210/16
    • The present invention provides olefin polymerization catalysts and processes for preparing a polypropylene and a propylene block copolymer using the olefin polymerization catalysts. The olefin polymerization catalyst (1) of the invention is formed from: (I-1) a contact product obtained by contacting: (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (C) a specific organosilicon compound; (II-1) (D) a specific polyether compound; and optionally, (III) an organometallic compound catalyst component. The olefin polymerization catalyst (2) of the invention is formed from: (I-2) a contact product obtained by contacting: (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (D) a specific polyether compound; (II-2) (C) a specific organosilicon compound; and optionally, (III) an organometallic compound catalyst component. The propylene is polymerized in the presence of the above-mentioned olefin polymerization catalysts to prepare highly isotactic polypropylene. The propylene block copolymer is prepared by the steps of polymerizing propylene to form a polypropylene component and copolymerizing ethylene and an &agr;-olefin of 3 to 20 carbon atoms to form an ethylene/&agr;-olefin copolymer component in the presence of the polymerization catalysts.
    • 本发明提供烯烃聚合催化剂和使用烯烃聚合催化剂制备聚丙烯和丙烯嵌段共聚物的方法。 本发明的烯烃聚合催化剂(1)由以下物质形成:(I-1)通过使(A)固体钛催化剂成分,(B)有机金属化合物催化剂成分和(C) 有机硅化合物; (II-1)(D)特定的聚醚化合物; 和(III)有机金属化合物催化剂组分。 本发明的烯烃聚合催化剂(2)由以下物质形成:(I-2)通过使(A)固体钛催化剂成分(B)有机金属化合物催化剂成分与(D) 聚醚化合物; (II-2)(C)特定的有机硅化合物; 和(III)有机金属化合物催化剂组分。 丙烯在上述烯烃聚合催化剂的存在下聚合以制备高度全同立构的聚丙烯。 丙烯嵌段共聚物通过聚合丙烯以形成聚丙烯组分并使乙烯和3-20个碳原子的α-烯烃共聚以在聚合催化剂存在下形成乙烯/α-烯烃共聚物组分的步骤来制备。