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    Polyolefin composition
    13.
    发明授权
    Polyolefin composition 失效
    聚烯烃组合物

    公开(公告)号：US4933393A

    公开(公告)日：1990-06-12

    申请号：US269576

    申请日：1988-11-10

    申请人： Akinori Toyota ,  Mamoru Kioka ,  Takeshi Shiraki ,  Kunie Hiroshige

    发明人： Akinori Toyota ,  Mamoru Kioka ,  Takeshi Shiraki ,  Kunie Hiroshige

    IPC分类号： C08L23/00 ,  C08F10/02 ,  C08L23/06

    CPC分类号： C08F10/02 ,  C08L23/06 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2308/00 ,  C08L2314/02 ,  Y02P20/52

    摘要： An injection-molding polyolefin composition suitable for obtaining an injection-molded article having excellent sliding property and excellent impact resistance and being free from delamination, said polyolefin composition being characterized in that(1) the composition consists substantially of an ultrahigh-molecular-weight polyolefin having an intrinsic viscosity of 10-40 dl/g as measured in decalin of 135.degree. C. and a low-molecular-weight to high-molecular-weight polyolefin having an intrinsic viscosity of 0.1-5 dl/g as measured in decalin of 135.degree. C.,(2) the ultrahigh-molecular-weight polyolefin is contained in the composition in an amount of 10-40% by weight based on the total weight of the ultrahigh-molecular-weight polyolefin and the low-molecular-weight to high-molecular-weight polyolefin,(3) the composition has an intrinsic viscosity [.eta.]c of 3.5-15 dl/g as measured in decalin of 135.degree. C.,(4) the composition has a melt torque T of 4.5 kg.cm or below, and(5) the section of the injection-molded square plate produced from the composition has a phase-separated structure composed of a continuous phase and a discontinuous phase and the average paticle diameter (average major axis length) of the discontinuous phase is 20 .mu.m or below.

    Process for producing olefin polymers
    16.
    发明授权
    Process for producing olefin polymers 失效
    生产烯烃聚合物的方法

    公开(公告)号：US4841003A

    公开(公告)日：1989-06-20

    申请号：US99797

    申请日：1987-09-22

    申请人： Norio Kashiwa ,  Akinori Toyota ,  Mamoru Kioka

    发明人： Norio Kashiwa ,  Akinori Toyota ,  Mamoru Kioka

    IPC分类号： C08F4/00 ,  C08F4/46 ,  C08F4/60 ,  C08F4/64 ,  C08F4/658 ,  C08F10/00

    CPC分类号： C08F10/00

    摘要： A process for producing a polymer or copolymer of an olefin which comprises polymerizing or copolymerizing at least one olefin with or without a diolefin in the presence of a catalyst composed of (A) a magnesium-containing solid titanium catalyst component containing magnesium, titanium, a halogen and an electron donor as essential ingredients and (B) an organoaluminum compound catalyst component; characterized in that(1) said catalyst further comprises (C) an organic silicon compound catalyst component having an Si--O--C or Si--N--C bond, and(2) said electron donor in the catalyst component (A) is a cyclic mono- or poly-ester such as diethyl cyclohexene-1,2-dicarboxylate, di-n-butyl 1,3-cyclohexadiene-1,2-dicarboxylate, diethyl furane-3,4-dicarboxylate, di-n-butyl 3,4-dihydro-2H-pyrane-5,6-dicarboxylate, diethyl ester of cyclohexene-1,6-dicarboxylic acid, and so on.

    Process for polymerizing olefins and catalyst for polymerizing olefins
    20.
    发明授权
    Process for polymerizing olefins and catalyst for polymerizing olefins 失效
    烯烃聚合方法和烯烃聚合催化剂

    公开(公告)号：US5652303A

    公开(公告)日：1997-07-29

    申请号：US567876

    申请日：1995-12-06

    申请人： Naoshi Ishimaru ,  Mamoru Kioka ,  Akinori Toyota

    发明人： Naoshi Ishimaru ,  Mamoru Kioka ,  Akinori Toyota

    IPC分类号： C08F4/646 ,  C08F4/654 ,  C08F10/00 ,  C08F297/08 ,  C08F4/651

    CPC分类号： C08F297/08 ,  C08F10/00 ,  Y10S526/904

    摘要： A catalyst for polymerization of an olefin, said catalyst being formed from[A] a solid titanium catalyst component comprising magnesium, titanium, halogen and an electron donor as essential ingredients,[B] an organoaluminum compound catalyst component, and[C] an electron donor catalyst component comprising at least two electron donors including an electron donor (1) and an electron donor (2), the MFR (a) of homopolypropylene obtained by using the electron donor (1) together with the solid titanium catalyst component [A] and the organoaluminum compound catalyst component [B] has the following relation to the MFR (b) of homopolypropylene obtained by using the electron donor (2) under the same polymerization conditions as in the case of using the electron donor (1)log [MFR (b)/MFR (a)].gtoreq.1.5.This catalyst can give an olefin polymer having a broad molecular weight. Also provided is a process for polymerizing or copolymerizing an olefin in the presence of the above catalyst.

    摘要翻译： 用于烯烃聚合的催化剂，所述催化剂由[A]包含镁，钛，卤素和电子给体的固体钛催化剂组分作为必要成分[B]有机铝化合物催化剂组分和[C] 供体催化剂组分，其包含至少两个包括电子给体（1）和电子给体（2）的电子给体，通过使用电子给体（1）与固体钛催化剂组分[A]获得的均聚丙烯的MFR（a） 有机铝化合物催化剂组分[B]与使用电子给体（2）在与使用电子给体（1）的情况相同的聚合条件下获得的均聚丙烯的MFR（b）与[MFR （b）/ MFR（a）]> = 1.5。该催化剂可以得到具有宽分子量的烯烃聚合物。 还提供了在上述催化剂存在下使烯烃聚合或共聚的方法。