申请人:MONTELL NORTH AMERICA INC.
公开号:EP0362705A2
公开(公告)日:1990-04-11
Catalysts for the polymerization of olefins, particularly alpha olefin CH₂=CHR in which R is an alkyl radical with 1-6 carbon atoms or an aryl radical, obtained by the reaction of:
a) an Al-alkyl compound;
b) an ether containing at least two ether groups which can form complexes with anhydrous magnesium dichloride, under standard conditions of reaction, in amount less than 60 mmol per 100 g Mg dichloride; and
c) a solid catalyst component comprising an anhydrous magnesium dihalide in active form and having supported thereon a titanium compound containing at least a Ti-halogen bond and an electron-donor compound which is extractable with Al-triethyl, under standard conditions of extraction, for at least 70% in mol, wherein the solid, after extraction, has a surface area of more than 20 m²/gr.
烯烃聚合催化剂,特别是α-烯烃 CH₂=CHR 的聚合,其中 R 是具有 1-6 个碳原子的烷基或芳基,通过以下反应获得:
a) 烷基化合物
b) 至少含有两个醚基的醚,在标准反应条件下,该醚能与无水二氯化镁形成络合物,每 100 克二氯化镁的络合物量少于 60 毫摩尔;以及
c) 固体催化剂组分,包括活性形式的无水二卤化镁,并在其上支撑有至少含有一个钛卤键的钛化合物和一个在标准萃取条件下可用三乙基铝萃取至少 70%摩尔的电子供体化合物,其中萃取后的固体表面积大于 20 m²/gr。