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    • 2. 发明申请
    • PROCESS FOR PRODUCING OLEFIN POLYMER AND ETHYLENE POLYMER
    • 生产烯烃聚合物和乙烯聚合物的方法
    • WO1995018158A1
    • 1995-07-06
    • PCT/JP1994002251
    • 1994-12-27
    • IDEMITSU KOSAN CO., LTD.TAZAKI, ToshinoriMACHIDA, ShujiKAWASAKI, NobuoYABUNOUCHI, NobuhiroKADOI, YasunoriTAKEUCHI, MizutomoNAKACHO, KenjiSHIKUMA, HaruoTANI, Noriyuki
    • IDEMITSU KOSAN CO., LTD.
    • C08F04/642
    • C08F10/02C08F4/6392C08F4/65912C08F4/6592C08F10/00C08F110/02C08F210/02C08F210/16C08F210/18Y10S526/943C08F2500/17C08F2500/20C08F236/20C08F210/14C08F2500/14C08F212/08C08F2500/25
    • A process for producing an olefin polymer in an economically quite advantageous manner by polymerizing an olefin in the presence of a polymerization catalyst having a high activity and an excellent ability to effect copolymerization even when the amount of an expensive aluminum compound used as a promoter is reduced; and an ethylene polymer having an excellent moldability and good mechanical properties, heat-sealability and ESCR. The process comprises homo- or copolymerizing an olefin or olefins in the presence of a polymerization catalyst containing a transition metal compound (A) represented by the general formula CpMLx-1 (wherein M represents a group 4 metallic element, etc.; Cp represents a cyclic compound group having a cyclopentadienyl skeleton; L represents a sigma ligand; and x represents the valency of M) and an aluminumoxy compound (B) in such a proportion that the molar ratio, (B)/(A), is in the range of 2 to 500 (in terms of metallic element). The ethylene polymer is a homo- or copolymer of ethylene wherein (a) Mw/Mn ranges from 1.5 to 4 and Mw is 3,000 to 1,000,000; (b) the relationship of W>/=-24.9+2470/T holds between the half-value width (W) of the main peak and the temperature (T) in the compositional distribution curve; (c) the energy of activation of melt flow ranges from 7.5 to 20 kcal/mol; and (d) the density ranges from 0.85 to 0.97 g/cm .
    • 在具有高活性和优异的共聚能力的聚合催化剂的存在下,即使当用作助催化剂的昂贵的铝化合物的量减少时,通过聚合烯烃的经济上非常有利的方式生产烯烃聚合物的方法 ; 以及具有优异的成型性和良好的机械性能,热封性和ESCR的乙烯聚合物。 该方法包括在含有由通式CpMLx-1(其中M表示第4族金属元素等)表示的过渡金属化合物(A)的聚合催化剂存在下使烯烃或烯烃均聚或共聚合; Cp表示 具有环戊二烯基骨架的环状化合物基团; L表示σ配体; x表示M的化合价)和铝氧化合物(B)的摩尔比(B)/(A) 为2至500(以金属元素计)。 乙烯聚合物是乙烯的均聚物或共聚物,其中(a)Mw / Mn为1.5-4,Mw为3,000至1,000,000; (b)在主峰的半值宽度(W)和组成分布曲线中的温度(T)之间,W> / = - 24.9 + 2470 / T的关系成立; (c)熔体流动活化能为7.5至20kcal / mol; 和(d)密度在0.85至0.97g / cm 3之间。