POLYOLEFINS
    3.
    发明公开
    POLYOLEFINS 有权
    聚烯烃

    公开(公告)号:EP1789459A1

    公开(公告)日:2007-05-30

    申请号:EP05782880.8

    申请日:2005-09-13

    IPC分类号: C08F210/18 C08F4/622

    摘要: Process for making copolymer (eg elastomeric copolymer) by copolymerising (1) ethylene with (2) at least one comonomer aliphatic C3-C20 alpha-olefins and (3) at least one C4 to C30 conjugated or non-conjugated dienes. The monomers are contacted with (a) a transition metal catalyst of Formula A, and (b) an activating quantity of a suitable activator, Z is five-membered heterocyclic group having at least one carbon atom, at least one nitrogen atom and at least one other hetero atom selected from nitrogen, sulphur and oxygen, the remaining atoms being nitrogen or carbon; M is a metal from Group 3 to 11 or lanthanide; E1 and E2 are divalent (i) aliphatic hydrocarbon, (ii) alicyclic hydrocarbon, (iii) aromatic hydrocarbon, (iv) alkyl substituted aromatic hydrocarbon (v) heterocyclic groups and (vi) heterosubstituted derivatives of said groups (i) to (v); D1 and D2 are donor atoms or groups; X is an anionic group, L is a neutral donor group; n = m = zero or 1; y and z are independently zero or integers such that the number of X and L groups satisfy the valency and oxidation state of the metal M.

    Process for olefin polymerization
    6.
    发明公开
    Process for olefin polymerization 失效
    烯烃聚合工艺

    公开(公告)号:EP0417477A2

    公开(公告)日:1991-03-20

    申请号:EP90115317.1

    申请日:1990-08-09

    IPC分类号: C08F4/22 C08F10/00

    摘要: Novel chromium-containing compounds are prepared by forming a mixture of a chromium salt, a metal amide, and an ether. These novel chromium-containing, or chromium pyrrolide, compounds can be used as a cocatalyst in the presence of an olefin polymerization catalyst to produce a comonomer in-situ. The resultant polymer, although produced from predominately one monomer, has characteristics of a copolymer.

    摘要翻译: 新的含铬化合物通过形成铬盐,金属酰胺和醚的混合物来制备。 这些新颖的含铬或吡咯化铬化合物可以在烯烃聚合催化剂存在下用作助催化剂以便原位生产共聚单体。 所得聚合物虽然主要由一种单体制备,但具有共聚物的特性。