| 专利名称 | METHOD FOR PRODUCING A POLYOLEFIN COMPOSITE MATERIAL | 申请号 | EP20040802406 | 专利类型 | EP | 公开（公告）号 | EP1810991(B8) | 公开（授权）日 | 2012.10.24 | 申请（专利权）人 | 中国科学院化学研究所 | 发明（设计）人 | DONG JINYONGLIU JIGUANGHAN ZHICHAOWANG DUJINNIU HU | 主分类号 | C08L23/10 | IPC主分类号 | C08L23/10;C08F4/654;C08F4/6592;C08F210/00 | 专利有效期 | METHOD FOR PRODUCING A POLYOLEFIN COMPOSITE MATERIAL 至METHOD FOR PRODUCING A POLYOLEFIN COMPOSITE MATERIAL | 法律状态 | 说明书摘要 | The present invention belongs to the field of polyolefin alloy preparation, and particularly relates to a polyolefin composite material in good form with adjustable composition and performances, produced by controlling a composite catalyst composed of Zieglar-Natta catalyst and metallocene catalyst to be catalytic by stage in the olefin polymerization reaction. This material is composed of propylene polymer and ethylene copolymer which is obtained by copolymerizing ethylene with alpha olefin or diolefin, wherein: the molar content of alpha olefin or diolefin in the ethylene copolymer is 0%~60%, and the ethylene copolymer is 3~80% by weight of the polyolefin composite material; the polyolefin composite material is in particle form, and the ethylene copolymer has a molecular weight distribution of 1??6 and a glass transition temperature of -80~0°C; and the ethylene copolymer produced in the reaction is dispersed homogeneously in the propylene polymer particles to form the polyolefin composite material. |
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