Ethylene .alpha.-olefin copolymer obtained by copolymerizing ethylene
with an .alpha.-olefin
    11.
    发明授权
    Ethylene .alpha.-olefin copolymer obtained by copolymerizing ethylene with an .alpha.-olefin 失效
    通过使乙烯与α-烯烃共聚获得的乙烯-α-烯烃共聚物

    公开(公告)号:US6001941A

    公开(公告)日:1999-12-14

    申请号:US461948

    申请日:1995-06-05

    摘要: An ethylene/.alpha.-olefin copolymer obtained by copolymerizing ethylene with an .alpha.-olefin of 3 to 20 carbon atoms in the presence of a catalyst for olefin polymerization comprising an organoaluminum oxy-compound (a) and at least two kinds of transition metal compounds (b). This ethylene/.alpha.-olefin copolymer has high melt tension and high flowability. A graft modified ethylene/.alpha.-olefin copolymer obtained by graft polymerizing the above-mentioned ethylene/.alpha.-olefin copolymer with a polar monomer. An ethylene copolymer composition comprising the above-mentioned graft modified ethylene/.alpha.-olefin copolymer and polyolefin. The ethylene/.alpha.-olefin copolymer of the invention is excellent in moldability. From this copolymer, a film having high transparency and high mechanical strength can be produced. The graft modified ethylene/.alpha.-olefin copolymer of the invention is excellent in heat stability and moldability. From this copolymer, a film having high transparency and good adhesion to highly polar materials can be produced. The ethylene copolymer composition of the invention is excellent in heat stability and moldability. From this composition, a film having high transparency and good adhesion to highly polar materials can be produced.

    摘要翻译: 在烯烃聚合催化剂存在下,使乙烯与3-20个碳原子的α-烯烃共聚得到的乙烯/α-烯烃共聚物,包括有机铝氧化合物(a)和至少两种过渡金属化合物( b)。 该乙烯/α-烯烃共聚物具有高熔体张力和高流动性。 通过将极性单体接枝聚合上述乙烯/α-烯烃共聚物得到的接枝改性乙烯/α-烯烃共聚物。 包含上述接枝改性的乙烯/α-烯烃共聚物和聚烯烃的乙烯共聚物组合物。 本发明的乙烯/α-烯烃共聚物的成型性优异。 由该共聚物可以制造出透明性高,机械强度高的膜。 本发明的接枝改性乙烯/α-烯烃共聚物的热稳定性和成型性优异。 从该共聚物可以制造具有高透明性和对高极性材料的良好粘附性的膜。 本发明的乙烯共聚物组合物的热稳定性和成型性优异。 通过该组合物,可以制造具有高透明性和对高极性材料的良好粘附性的膜。

    Graft modified ethylene/.alpha.-olefin copolymer composition
    15.
    发明授权
    Graft modified ethylene/.alpha.-olefin copolymer composition 失效
    接枝改性乙烯/α-烯烃共聚物组合物

    公开(公告)号:US5834557A

    公开(公告)日:1998-11-10

    申请号:US872937

    申请日:1997-06-11

    摘要: An ethylene/.alpha.-olefin copolymer composition including (I) a graft-modified ethylene/.alpha.-olefin copolymer composition and (II) a polyolefin. The graft-modified composition is prepared by graft copolymerizing an ethylene/.alpha.-olefin copolymer with a polar monomer. The ethylene/.alpha.-olefin copolymer composition includes first and second ethylene/.alpha.-olefin copolymers. The copolymers are each prepared in the presence of a polymerization catalyst containing (a) an organoaluminum oxy compound and (b) for the first ethylene/.alpha.-olefin copolymer at least two kinds, and for the second ethylene/.alpha.-olefin copolymer one kind, of compounds of Group IV transition metals of the periodic table containing a ligand having a cyclopentadienyl skeleton. The graft-modified ethylene/.alpha.-olefin copolymer composition is blended with a polyolefin, such as by mechanical or solution blending, at a weight ratio (I) to (II) of 1:99 to 99:1. The copolymer compositions have excellent moldability and heat stability properties and form films having high transparency and mechanical strength and good adhesion to polar materials.

    摘要翻译: 包含(I)接枝改性的乙烯/α-烯烃共聚物组合物和(II)聚烯烃的乙烯/α-烯烃共聚物组合物。 通过将乙烯/α-烯烃共聚物与极性单体接枝共聚来制备接枝改性组合物。 乙烯/α-烯烃共聚物组合物包括第一和第二乙烯/α-烯烃共聚物。 共聚物各自在含有(a)有机铝氧化合物和(b)第一乙烯/α-烯烃共聚物至少两种的聚合催化剂存在下制备,并且对于第二种乙烯/α-烯烃共聚物为一种 的含有具有环戊二烯基骨架的配体的周期表的IV族过渡金属的化合物。 将接枝改性的乙烯/α-烯烃共聚物组合物与聚烯烃例如通过机械或溶液共混以1:99至99:1的重量比(I)至(II)共混。 共聚物组合物具有优异的成型性和热稳定性,并且形成具有高透明度和机械强度以及对极性材料的良好粘附性的膜。