Propylene-ethylene random copolymer film
    2.
    发明授权
    Propylene-ethylene random copolymer film 失效
    丙烯 - 乙烯无规共聚物膜

    公开(公告)号:US6057413A

    公开(公告)日:2000-05-02

    申请号:US706754

    申请日:1996-09-03

    摘要: A propylene-ethylene random copolymer prepared by copolymerizing propylene with ethylene in the substantial absence of a liquid medium with a catalyst system comprising:(A) a solid catalyst component containing magnesium, titanium, a halogen and a first electron donor as an essential component,(B) an organoaluminum compound and(C) a second electron donor compound, wherein an ethylene content (E) of the copolymer is from 3.5 to 7.0% by weight, and wherein a content of a xylene-soluble portion at 20.degree. C. (D) of the copolymer satisfies the relationship D.ltoreq.E+2.0 (% by weight). Films of the copolymer have an excellent appearance (little bleed whitening) and an excellent balance between low-temperature heat-sealing property and rigidity.

    摘要翻译: 基本上不存在液体介质的丙烯与乙烯共聚制备的丙烯 - 乙烯无规共聚物,催化剂体系包含:(A)含有镁,钛,卤素和第一电子给体作为必要组分的固体催化剂组分, (B)有机铝化合物和(C)第二电子给体化合物,其中共聚物的乙烯含量(E)为3.5〜7.0重量%,其中二甲苯可溶部分的含量为20℃ (D)满足D

    Propylene block copolymer
    3.
    发明授权
    Propylene block copolymer 失效
    丙烯嵌段共聚物

    公开(公告)号:US06225414B1

    公开(公告)日:2001-05-01

    申请号:US08868539

    申请日:1997-06-04

    IPC分类号: C08F29708

    摘要: 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.

    摘要翻译: 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。

    Propylene block copolymer
    4.
    发明授权
    Propylene block copolymer 失效
    丙烯嵌段共聚物

    公开(公告)号:US6117946A

    公开(公告)日:2000-09-12

    申请号:US123576

    申请日:1998-07-28

    CPC分类号: C08F297/08 C08F297/06

    摘要: A propylene block copolymer having a specified composition and consisting of a xylene soluble portion at 20.degree. C. in an amount of 5 wt % or more and a portion excluding the CXS portion, the melting temperature of the CXIS portion measured by a differential scanning caloriemeter being 130 to 155.degree. C., wherein the difference in transparency in terms of haze between prior to and posterior to the 1-hour treatment at 110.degree. C of a 150 .mu.m thick film obtained by forming said copolymer into a film by extrusion is 8% or less.According to the present invention, a block copolymer having a good transparency and improved impact resistance at a low temperature, and further exhibiting less bleeding at high-temperature heat treatment, can be provided.

    摘要翻译: 具有特定组成的丙烯嵌段共聚物,其组成为20℃下的二甲苯可溶部分,其量为5重量%以上,除了CXS部分以外的部分,通过差示扫描温度计测量的CXIS部分的熔融温度 为130〜155℃,其中通过将所述共聚物通过挤出形成所述共聚物获得的150μm厚的薄膜在110℃下1小时处理之前和之后的浊度方面的透明度差异是 8%以下。 根据本发明,可以提供在低温下具有良好的透明性和改善的耐冲击性的嵌段共聚物,并且在高温热处理中进一步显示较少的渗色。

    PROPYLENE-ETHYLENE-BUTENE BLOCK COPOLYMER AND MOLDED ARTICLE THEREOF
    5.
    发明申请
    PROPYLENE-ETHYLENE-BUTENE BLOCK COPOLYMER AND MOLDED ARTICLE THEREOF 有权
    丙烯 - 乙烯 - 嵌段共聚物及其成型品

    公开(公告)号:US20100197865A1

    公开(公告)日:2010-08-05

    申请号:US12064647

    申请日:2006-08-29

    IPC分类号: C08F255/04

    摘要: A propylene-ethylene-butene block copolymer is provided which includes from 60 to 85% by weight of a polypropylene portion and from 15 to 40% by weight of a propylene-ethylene-butene random copolymer portion, wherein the copolymer satisfies the requirements (1) and (2) given below. In addition, a molded article including such a propylene-ethylene-butene block copolymer is provided. (1) The random copolymer portion includes a propylene-ethylene random copolymer component (EP) and a propylene-ethylene-butene random copolymer component (EPB) and the copolymer component (EP) has an intrinsic viscosity of from 1.5 to 8 dl/g and an ethylene unit content of from 20 to 50% by weight, and the copolymer component (EPB) has an intrinsic viscosity of from 0.5 to 8 dl/g, an ethylene unit content of from 47 to 77% by weight and a butene unit component of from 3 to 33% by weight and the total of the ethylene unit content and the butene unit content is from 50 to 80% by weight. (2): The propylene-ethylene-butene block copolymer has a melt flow rate of from 5 to 120 g/10 min.

    摘要翻译: 提供了丙烯 - 乙烯 - 丁烯嵌段共聚物,其包含60至85重量%的聚丙烯部分和15至40重量%的丙烯 - 乙烯 - 丁烯无规共聚物部分,其中所述共聚物满足要求(1 )和(2)给出。 此外,提供了包含这种丙烯 - 乙烯 - 丁烯嵌段共聚物的模塑制品。 (1)无规共聚物部分包括丙烯 - 乙烯无规共聚物组分(EP)和丙烯 - 乙烯 - 丁烯无规共聚物组分(EPB),共聚物组分(EP)的特性粘度为1.5至8dl / g 乙烯单元含量为20〜50重量%,共聚物成分(EPB)的特性粘度为0.5〜8dl / g,乙烯单元含量为47〜77重量%,丁烯单元 组分为3至33重量%,乙烯单元含量和丁烯单元含量的总和为50至80重量%。 (2):丙烯 - 乙烯 - 丁烯嵌段共聚物的熔体流动速率为5〜120g / 10分钟。

    Method for feeding boron compounds, fine particles of boron compounds, catalyst components for the polymerization of olefins comprising them, and processes for the production of the particles
    6.
    发明授权
    Method for feeding boron compounds, fine particles of boron compounds, catalyst components for the polymerization of olefins comprising them, and processes for the production of the particles 有权
    硼化合物的供给方法,硼化合物的微粒,包含它们的烯烃聚合的催化剂成分,以及粒子的制造方法

    公开(公告)号:US06613850B1

    公开(公告)日:2003-09-02

    申请号:US09125518

    申请日:1998-11-23

    IPC分类号: C08F444

    摘要: A method for feeding a boron compound, which comprises feeding at least one boron compound selected from (1) to (3) described below in the state suspended or slurried in a solvent continuously to a reactor; a boron compound in the form of fine particles being one or more boron compounds selected from (1) to (3) described below and having a maximum particle diameter of 50 &mgr;m or less; a catalyst component for olefin polymerization consisting of said boron compound in the form of fine particles; a method for producing a boron compound in the form of fine particles which comprises dissolving one or more boron compounds selected from (1) to (3) described below in an aromatic hydrocarbon solvent and then precipitating in an aliphatic hydrocarbon solvent; and a method for producing a boron compound in the form of fine particles which comprises pulverizing one or more boron compounds selected from (1) to (3) described below so that their maximum particle diameter is 50 &mgr;m or less. (1) a boron compound represented by the general formula: BQ1Q2Q3, (2) a boron compound represented by the general formula: G+(BQ1Q2Q3Q4)−, and (3) a boron compound represented by the general formula: (L-H)+(BQ1Q2Q3Q4)−.

    摘要翻译: 一种硼化合物的供给方法,其特征在于,将至少一种选自下述(1)〜(3)的硼化合物以在溶剂中悬浮或浆化至反应器的状态; 微粒形式的硼化合物是选自下述(1)至(3)中并且最大粒径为50μm或更小的一种或多种硼化合物; 用于由细颗粒形式的所述硼化合物组成的用于烯烃聚合的催化剂组分; 一种制备细颗粒形式的硼化合物的方法,包括将一种或多种选自下述(1)至(3)的硼化合物溶解在芳烃溶剂中,然后在脂族烃溶剂中沉淀; 以及一种微细颗粒形式的硼化合物的制造方法,其中包括粉碎一种或多种选自下述(1)至(3)的硼化合物,使其最大粒径为50μm以下。 (1)由通式:BQ1Q2Q3表示的硼化合物,(2)由通式G +(BQ1Q2Q3Q4) - 表示的硼化合物,和(3)由通式(LH)+( BQ1Q2Q3Q4) - 。

    Gas distributor for use in gas phase polymerization apparatus
    7.
    发明授权
    Gas distributor for use in gas phase polymerization apparatus 失效
    用于气相聚合装置的气体分配器

    公开(公告)号:US5381827A

    公开(公告)日:1995-01-17

    申请号:US157294

    申请日:1993-11-26

    IPC分类号: B01J8/44 C08F2/34 B01J8/20

    摘要: For use in gas phase polymerization apparatus having an agitator in a fluidized bed polymerization reactor, the present invention provides a gas distributor which has holes, and caps covering the respective holes from above and each having an opening oriented in a substantially horizontal direction at an angle of about 90 to about 135 deg with, and outwardly of, a tangent to a circle centered about the center of the reactor whereby an increase in the gas solid ratio can be prevented in the region above the distributor to ensure efficient discharge of the polymer produced, and the polymer particles can be prevented from falling into a gas room thereunder.

    摘要翻译: 为了在流化床聚合反应器中具有搅拌器的气相聚合装置中使用,本发明提供了一种具有孔的气体分配器和从上方覆盖相应孔的盖,每个孔具有在大致水平方向上以一定角度定向的开口 约90度至约135度,并且向外以与​​反应器中心为中心的圆相切,从而可以在分配器上方的区域中防止气体固体比率的增加,以确保生产的聚合物的有效排放 ,并且可以防止聚合物颗粒落入其中的气室中。

    Process for producing 4-methylpentene-1 copolymer and resin composition
containing the same
    10.
    发明授权
    Process for producing 4-methylpentene-1 copolymer and resin composition containing the same 失效
    制备4-甲基戊烯-1共聚物的方法和含有它们的树脂组合物

    公开(公告)号:US4801650A

    公开(公告)日:1989-01-31

    申请号:US93286

    申请日:1987-09-04

    CPC分类号: C08F210/14

    摘要: A process for producing a 4-methylpentene-1 copolymer comprising copolymerizing 4-methylpentene-1 with other .alpha.-olefin in a hydrocarbon solvent in the presence of a Ziegler-Natta catalyst and a resin composition containing the 4-methylpentene-1 copolymer are disclosed. The copolymerization comprises a first stage in which (A) a homopolymer or random copolymer of 4-methylpentene-1 having an .alpha.-olefin content of not more than 3 mol % and an intrinsic viscosity of at least 2.5 dl/g is prepared and a second stage in which (B) a random copolymer having an .alpha.-olefin content higher than that of the polymer (A) and no higher than 9 mol % and an intrinsic viscosity of at least 2.5 dl/g is prepared, and the produced copolymer insoluble in the solvent is separated to recover a 4-methylpentene-1 copolymer containing from 5 to 80% by weight of the polymer (A). The process produces a solvent-insoluble copolymer in an increased yield without impairing transparency of the copolymer.