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    Copolymers of ethylene and an alpha-olefin and catalytic production thereof
    4.
    发明公开
    Copolymers of ethylene and an alpha-olefin and catalytic production thereof 失效
    乙烯和乙烯烯烃的共聚物及其催化生产

    公开(公告)号：EP0346098A3

    公开(公告)日：1991-04-17

    申请号：EP89305752.1

    申请日：1989-06-07

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Imai, Akio ,  Sugimori, Kiyoyuki ,  Yamamoto, Keisaku ,  Takane, Minoru

    IPC分类号： C08F210/02 ,  C08F4/68

    CPC分类号： C08F210/00 ,  C08F4/68

    摘要： Ethylene (35-60 mols) and a C 3-10 a-olefin (65-40 mols) are copolymerized at a temperature of 40 to 80°C with a catalyst of (a) an oxyvanadium compound, (b) an organoaluminium compound and (c) a halogenated hydrocarbon ester, e.g. a perchlorocrotonic acid ester, in a mol ratio of (b) to (a) of ≧ 2.5 and of (c) to (a) of ≧ 1.5, in a hydrocarbon solvent. The polymer has a molar ratio of ethylene: a-olefin of 88:12 - 98:2, a number average mol. wt. of 35,000 - 80,000 and a ratio of wt. number average mol wt. of 1.8:1 - 3.0:1 determined by GPC. It has good transparency and is moldable to a film which is heat-sealable at low temperature.

    Method of removing catalyst from ethylene-alpha-olefin copolymer
    6.
    发明公开
    Method of removing catalyst from ethylene-alpha-olefin copolymer 失效
    Verfahren zur Entfernung vonÄthylen-Alpha-Olefin-Copolymeren

    公开(公告)号：EP0714917A2

    公开(公告)日：1996-06-05

    申请号：EP95118174.2

    申请日：1991-12-12

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Yamamoto, Keisaku ,  Wakatsuki, Kizuku, Sumitomo Kagaku Shiizu-Ryo ,  Sugimori, Kiyoyuki ,  Saba, Hayato ,  Inagaki, Katsunari

    IPC分类号： C08F6/02 ,  C08L23/16

    CPC分类号： C08F6/02 ,  C08L23/00

    摘要： After a copolymer of ethylene and an alpha-olefin of at least 3 carbon atoms (e.g. propylene) and optionally also a non-conjugated diene has been prepared with the use of a vanadium catalyst and an organoaluminum (e.g. alkyl) compound, the residual catalyst is removed from the polymerisation reaction mixture in a hydrocarbon solvent (eg.hexane)by,a halogenated ester compound being optional, oxidising the reaction mixture with an oxidising agent (preferably O₂), e.g. to convert the vanadium to pentavalent V, in an aqueous solution of an alkaline compound (e.g. hydroxide of Li, Na or K) in an amount to give an aqueous phase pH of at least 10.
    The organic phase is then separated and washed with water and the polymer is recovered therefrom.
    The catalyst residue is thus reduced to very low levels, so that the copolymer is not affected thereby.

    摘要翻译： 在使用钒催化剂和有机铝（例如烷基）化合物制备乙烯和至少3个碳原子的α-烯烃（例如丙烯）和任选还有非共轭二烯的共聚物之后，残余催化剂 通过任选的卤代酯化合物在烃溶剂（例如己烷）中从聚合反应混合物中除去，用氧化剂（优选O 2）氧化反应混合物，例如 将钒转化为五价V，在碱性化合物（例如Li，Na或K的氢氧化物）的水溶液中，其量使得水相pH至少为10.然后分离有机相并用水洗涤 并从中回收聚合物。 因此，催化剂残余物降低到非常低的水平，使得共聚物不受其影响。

    Method of removing catalyst from ethylene-alpha-olefin copolymer
    7.
    发明公开
    Method of removing catalyst from ethylene-alpha-olefin copolymer 失效
    从乙烯-α-烯烃共聚物中除去催化剂的方法

    公开(公告)号：EP0490672A3

    公开(公告)日：1993-01-13

    申请号：EP91311555.6

    申请日：1991-12-12

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Yamamoto, Keisaku ,  Wakatsuki, Kizuku ,  Sugimori, Kiyoyuki ,  Saba, Hayato ,  Inagaki, Katsunari

    IPC分类号： C08F6/08 ,  C08F6/24

    CPC分类号： C08F6/02 ,  C08L23/00

    摘要： After a copolymer of ethylene and an alpha-olefin of at least 3 carbon atoms (e.g. propylene) and optionally also a non-conjugated diene has been prepared with the use of a vanadium catalyst and an organoaluminum (e.g. alkyl) compound, the residual catalyst is removed from the polymerisation reaction mixture in a hydrocarbon solvent (e.g. hexane) by
    (a) when the catalyst also includes a halogenated ester compound, mixing the reaction mixture with stirring into an aqueous solution of an alkaline compound (e.g. hydroxide of Li, Na or K) in an amount to give an aqueous phase pH of at least 10; or (b) the halogenated ester compound being optional, oxidising the reaction mixture with an oxidising agent (preferably O₂), e.g. to convert the vanadium to pentavalent V, in an aqueous alkaline solution as in (a). The organic phase is then separated and washed with water and the polymer is recovered therefrom. The catalyst residue is thus reduced to very low levels, so that the copolymer is not affected thereby.

    Catalyst for olefinic hydrocarbon polymerization and process for producing olefinic hydrocarbon polymer
    8.
    发明公开
    Catalyst for olefinic hydrocarbon polymerization and process for producing olefinic hydrocarbon polymer 失效
    烯烃聚合催化剂和生产烯烃聚合物的方法

    公开(公告)号：EP0449583A3

    公开(公告)日：1992-04-08

    申请号：EP91302638.1

    申请日：1991-03-26

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Saba, Hayato ,  Yamamoto, Keisaku ,  Imai, Akio ,  Sugimori, Kiyoyuki ,  Wakatsuki, Kizuku

    IPC分类号： C08F10/00 ,  C08F4/68

    CPC分类号： C08F10/00 ,  C08F4/68

    摘要： An inert hydrocarbon catalyst is a mixture of 1 mol of (A) a reaction product obtained by reacting in an inert hydrocarbon solvent (a) 1 mol of at least one V compound VO(OR) m X 3-m wherein R is a hydrocarbon group, X a halogen atom and m a real number of from 0 to 3 (preferably 0), and (b) 0.5 to 1.4 mols of a dihydroxy hydrocarbon compound constituted of a C2-12 straight chain hydrocarbon skeleton having a hydroxyl group at each end terminal and at least one hydrocarbon branch bonded to said hydrocarbon skeleton, and 2 to 500 mols of (B) at least one organoaluminum compound represented by R′ n AℓX′ 3-n wherein R′ is a hydrocarbon group, X′ a halogen atom; and n a real number more than 0 and less than 3. The catalyst is dissolved in an aliphatic or alicyclic hydrocarbon solvent (e.g. hexane) to which is added an olefin (e.g. α-olefin alone or with ethylene and/or a polyene), to polymerise, at 0- 100°C under pressure of 5-50 kg/cm² to produce olefinic hydrocarbon polymers having narrow distributions of molecular weight and composition with high efficiency and high polymerization activity, without obstruction or contamination of equipment due to precipitation of catalyst.

    Method of removing catalyst from ethylene-alpha-olefin copolymer
    9.
    发明公开
    Method of removing catalyst from ethylene-alpha-olefin copolymer 失效
    一种用于去除乙烯-α-烯烃共聚物的方法

    公开(公告)号：EP0714917A3

    公开(公告)日：1997-05-02

    申请号：EP95118174.2

    申请日：1991-12-12

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Yamamoto, Keisaku ,  Wakatsuki, Kizuku, Sumitomo Kagaku Shiizu-Ryo ,  Sugimori, Kiyoyuki ,  Saba, Hayato ,  Inagaki, Katsunari

    IPC分类号： C08F6/02 ,  C08L23/16

    CPC分类号： C08F6/02 ,  C08L23/00

    摘要： After a copolymer of ethylene and an alpha-olefin of at least 3 carbon atoms (e.g. propylene) and optionally also a non-conjugated diene has been prepared with the use of a vanadium catalyst and an organoaluminum (e.g. alkyl) compound, the residual catalyst is removed from the polymerisation reaction mixture in a hydrocarbon solvent (eg.hexane)by,a halogenated ester compound being optional, oxidising the reaction mixture with an oxidising agent (preferably O₂), e.g. to convert the vanadium to pentavalent V, in an aqueous solution of an alkaline compound (e.g. hydroxide of Li, Na or K) in an amount to give an aqueous phase pH of at least 10. The organic phase is then separated and washed with water and the polymer is recovered therefrom. The catalyst residue is thus reduced to very low levels, so that the copolymer is not affected thereby.