申请人:Voskoboynikov Z. Alexander
公开号:US20070135597A1
公开(公告)日:2007-06-14
This invention relates to a transition metal compound represented by the formula:
wherein M is a group 3, 4, 5 or 6 transition metal atom, or a lanthanide metal atom, or actinide metal atom; E is: 1) a substituted or unsubstituted indenyl ligand that is bonded to Y through the four, five, six or seven position of the indenyl ring, or 2) a substituted or unsubstituted heteroindenyl ligand that is bonded to Y through the four, five or six position of the heteroindenyl ring, provided that the bonding position is not the same as the position of the ring heteroatom, or 3) a substituted or unsubstituted fluorenyl ligand that is bonded to Y through the one, two, three, four, five, six, seven or eight position of the fluorenyl ring, or 4) a substituted or unsubstituted heterofluorenyl ligand that is bonded to Y through the one, two, three, four, five or six position of the heteroindenyl ring, provided that the bonding position is not the same as the position of the ring heteroatom; A is a substituted or unsubstituted cyclopentadienyl ligand, a substituted or unsubstituted heterocyclopentadienyl ligand, a substituted or unsubstituted indenyl ligand, a substituted or unsubstituted heteroindenyl ligand, a substituted or unsubstituted fluorenyl ligand, a substituted or unsubstituted heterofluorenyl ligand, or other mono-anionic ligand; Y is a Group 15 or 16 bridging heteroatom substituent that is bonded via the heteroatom to E and A; and X are, independently, univalent anionic ligands, or both X are joined and bound to the metal atom to form a metallocycle ring, or both X join to form a chelating ligand, a diene ligand, or an alkylidene ligand. This invention further relates to catalyst systems comprising the above transiotioon metal compounds, activators and optional supports and their use to polymerize or oligomerize olefins.
本发明涉及一种过渡金属化合物,其表示为以下公式:其中M是3、4、5或6族过渡金属原子,或镧系金属原子,或锕系金属原子;E是:1)与Y通过茚环的四、五、六或七位置结合的取代或未取代的茚基配体,或2)与Y通过杂环茚环的四、五或六位置结合的取代或未取代的杂环茚基配体,前提是结合位置与环杂原子的位置不同,或3)与Y通过芴环的一、二、三、四、五、六、七或八位置结合的取代或未取代的芴基配体,或4)与Y通过杂芴环的一、二、三、四、五或六位置结合的取代或未取代的杂芴基配体,前提是结合位置与环杂原子的位置不同;A是取代或未取代的环戊二烯基配体,取代或未取代的杂环戊二烯基配体,取代或未取代的茚基配体,取代或未取代的杂环茚基配体,取代或未取代的芴基配体,取代或未取代的杂芴基配体,或其他单阴离子配体;Y是通过杂原子与E和A结合的15族或16族桥接杂原子取代基;X是独立的一价阴离子配体,或两个X结合并与金属原子结合形成金属环,或两个X结合形成螯合配体、二烯基配体或烷基亚基配体。本发明还涉及包含上述过渡金属化合物、活化剂和可选支撑物的催化剂系统及其用于聚合或寡聚烯烃的用途。