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公开(公告)号：EP0958314A1
公开(公告)日：1999-11-24
申请号：EP98906372.0
申请日：1998-02-06
发明人： WENG, Weiqing , DEKMEZIAN, Armen, H. , MARKEL, Eric, J. , GADKARI, Avinash, Chandrakant , DEKONINCK, Jean-Marc
IPC分类号： C08F2 , C08F4 , C08F10 , C08F255 , C08F257 , C08F290 , C08F297 , C08L23 , C08L51 , C08L55 , C08F110 , C08F210
CPC分类号： C08L55/005 , C08F2/08 , C08F110/02 , C08F210/18 , C08F255/00 , C08F255/02 , C08F257/02 , C08F290/00 , C08F290/04 , C08F290/042 , C08F290/044 , C08F297/08 , C08F297/083 , C08L23/02 , C08L23/08 , C08L23/0815 , C08L51/06 , C08L55/00 , C08L2205/02 , C08L2314/06 , C08L2666/24 , C08L2666/04 , C08L2666/02 , C08F2500/03 , C08F2500/09 , C08F2500/12 , C08F210/08 , C08L2666/06
摘要： A polyolefin product is provided which comprises a branched olefin copolymer having an isotactic polypropylene backbone, polyethylene branches and, optionally, one or more comonomers. The total comonomer content of the branched olefin copolymer is from 0 to 20 mole percent. Also, the mass ratio of the isotactic polypropylene to the polyethylene ranges from 99.9:0.1 to 50:50. Additionally, a process is provided for preparing a branched olefin copolymer which comprises: a) copolymerizing ethylene, optionally with one or more copolymerizable monomers, in a polymerization reaction under conditions sufficient to form copolymer having greater than 40 % chain end-group unsaturation; b) copolymerizing the product of a) with propylene and, optionally, one or more copolymerizable monomers, in a polymerization reactor under suitable polypropylene polymerization conditions using a chiral, stereorigid transition metal catalyst capable of producing isotactic polypropylene; and c) recovering a branched olefin copolymer.
摘要翻译： 提供了一种聚烯烃产品，其包含具有全同立构聚丙烯骨架的支链烯烃共聚物，聚乙烯支链和任选的一种或多种共聚单体。 支化烯烃共聚物的总共聚单体含量为0-20摩尔％。 此外，全同立构聚丙烯与聚乙烯的质量比为99.9:0.1至50:50。 此外，提供了制备支化烯烃共聚物的方法，其包括：a）在足以形成具有大于40％链端基不饱和度的共聚物的条件下在聚合反应中使乙烯任选地与一种或多种可共聚单体共聚; b）使用能够生产全同立构聚丙烯的手性立体刚性过渡金属催化剂，在合适的聚丙烯聚合条件下，在聚合反应器中使a）的产物与丙烯和任选的一种或多种可共聚单体共聚; 和c）回收支链烯烃共聚物。
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公开(公告)号：EP0958313A1
公开(公告)日：1999-11-24
申请号：EP98906371.0
申请日：1998-02-06
IPC分类号： C08F2 , C08F4 , C08F10 , C08F255 , C08F257 , C08F290 , C08F297 , C08L23 , C08L51 , C08L55 , C08F110 , C08F210
CPC分类号： C08L55/005 , C08F2/08 , C08F110/02 , C08F210/18 , C08F255/00 , C08F255/02 , C08F257/02 , C08F290/00 , C08F290/04 , C08F290/042 , C08F290/044 , C08F297/08 , C08F297/083 , C08L23/02 , C08L23/08 , C08L23/0815 , C08L51/06 , C08L55/00 , C08L2205/02 , C08L2314/06 , C08L2666/24 , C08L2666/04 , C08L2666/02 , C08F2500/03 , C08F2500/09 , C08F2500/12 , C08F210/08 , C08L2666/06
摘要： The invention relates to a thermoplastic elastomer composition comprising a branched olefin copolymer derived from olfinically unsaturated monomers capable of insertion polymerization having A) a Tg as measured by DSC less than or equal to 10 °C; B) Tm greater than 80 °C; C) an elongation at break of greater than or equal to 300 %; D) a tensile strength of greater than or equal to 1,500 psi (10,300 kPa); and E) an elastic recovery of greater than or equal to 50 %. The invention also relates to process for preparing the invention composition comprising: A) polymerizing ethylene or propylene and optionally, one or more copolymerizable monomers in a polymerization reaction under conditions sufficient to form copolymer having greater than 40 % chain end-group unsaturation; B) copolymerizing the product of A) with ethylene and one or more comonomers so as to prepare said branched olefin copolymer. The branched olefin copolymer compositions of the invention are suitable as replacements for styrene block copolymer compositions and in other traditional thermoplastic elastomer applications.
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