摘要:
An olefin polymerization catalyst comprising an organoaluminium oxy-compound (a) and two cyclopentadienyl transition metal compounds (b-I) and (b-II). A process for olefin polymerization in the presence of the catalyst and ethylene/α-olefin copolymer obtainable by copolymerizing ethylene with an α-olefin in the presence of the catalyst. Graft modified ethylene/α-olefin copolymer obtainable by graft polymerizing the above-mentioned ethylene/α-olefin copolymer with a polar monomer, and composition comprising the graft modified copolymer and polyolefin. The ethylene/α-olefin copolymer produced is excellent in moldability and has high melt tension and high flowability. A film having high transparency and high mechanical strength can be produced from it.
摘要:
Ethylene copolymer compositions comprising one or more ethylene/α-olefin copolymers and a low-density polyethylene obtained by high-pressure radical polymerization, a crystalline polyolefin, an olefin type elastomer or a graft modified ethylene (co)polymer. The compositions comprise an ethylene/α-olefin copolymer obtainable by using a catalyst for olefin polymerization containing an organoaluminium oxy-compound (a) and at least two specific metallocene compounds (b), or which have specific properties. The compositions are excellent in moldability and from them films having high transparency and high mechanical strength can be produced. When the ethylene/α-olefin composition contains the graft modified ethylene (co)polymer, a film having high transparency and good adhesion to highly polar materials can be produced.
摘要:
Ethylene copolymer compositions comprising one or more ethylene/α-olefin copolymers and a low-density polyethylene obtained by high-pressure radical polymerization, a crystalline polyolefin, an olefin type elastomer or a graft modified ethylene (co)polymer. The compositions comprise an ethylene/α-olefin copolymer obtainable by using a catalyst for olefin polymerization containing an organoaluminium oxy-compound (a) and at least two specific metallocene compounds (b), or which have specific properties. The compositions are excellent in moldability and from them films having high transparency and high mechanical strength can be produced. When the ethylene/α-olefin composition contains the graft modified ethylene (co)polymer, a film having high transparency and good adhesion to highly polar materials can be produced.
摘要:
An olefin polymerization catalyst comprising an organoaluminium oxy-compound (a) and two cyclopentadienyl transition metal compounds (b-I) and (b-II). A process for olefin polymerization in the presence of the catalyst and ethylene/α-olefin copolymer obtainable by copolymerizing ethylene with an α-olefin in the presence of the catalyst. Graft modified ethylene/α-olefin copolymer obtainable by graft polymerizing the above-mentioned ethylene/α-olefin copolymer with a polar monomer, and composition comprising the graft modified copolymer and polyolefin. The ethylene/α-olefin copolymer produced is excellent in moldability and has high melt tension and high flowability. A film having high transparency and high mechanical strength can be produced from it.