申请人:Repsol Quimica S.A.
公开号:US06635778B1
公开(公告)日:2003-10-21
Catalyst component for the polymerization of alpha-olefins of general formula (I)
wherein:
M is a transition metal of groups 3, 4-10 of the periodic table of the elements, Each X group can be equal or different and it is hydride, halogen, alkyl, cycloalkyl, aryl, alkenyl, arylalkyl, arylalkenyl or alkylaryl with 1 to 20 carbon atoms, linear or branched. L is a neutral Lewis base
A is a ring with delocalized &pgr; electrons, that directly coordinates to the transition metal M. Each E group can be equal to or different from each other and it is BRIII, CRIV2, SiRIII2, GeRIII2; at least one E is SiRIII2. RII is hydrogen, alkyl, cycloalkyl, aryl, alkenyl, arylalkyl, arylalkenyl or alkylaryl from 1 to 20 carbon atoms, linear or branched, whose hydrogens can be substituted by SiR3, GeR3, OR, NR2, OSiR3 or any combination of thereof. It can moreover form a condensed ring through another bond with E.
催化剂组分用于α-烯烃的聚合,其一般式为(I):其中:M是元素周期表3、4-10族的过渡金属,每个X基团可以相等或不同,它是氢化物、卤素、烷基、环烷基、芳基、烯基、芳基烷基、芳基烯基或烷基芳基,具有1至20个碳原子,线性或支链。L是中性的Lewis碱基,A是具有离域π电子的环,直接配位于过渡金属M上。每个E基团可以相等或不同,它是BRIII、CRIV2、SiRIII2、GeRIII2;至少一个E是SiRIII2。RII是氢、烷基、环烷基、芳基、烯基、芳基烷基、芳基烯基或烷基芳基,具有1至20个碳原子,线性或支链,其氢可以被SiR3、GeR3、OR、NR2、OSiR3或任何其中的组合所取代。此外,它可以通过与E的另一个键形成一个缩合环。