申请人:ZUIDEVELD Martin Alexander
公开号:US20160176998A1
公开(公告)日:2016-06-23
The present invention relates to a catalyst system comprising a procatalyst, a co-catalyst and an external electron donor, wherein the external electron donor comprises a compound having the structure according to Formula I: Si(L)
n
(OR
11
)
4-n
(Formula I), wherein, Si is a silicon atom with valency 4+; O is an oxygen atom with valency 2− and O is bonded to Si via the silicon-oxygen bond; n is 1, 2, 3 or 4; R
11
is a selected from the group consisting of linear, branched and cyclic alkyl having at most 20 carbon atoms and aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms; L is a group represented by (Formula II), wherein, L is bonded to the silicon atom via the nitrogen-silicon bond; L has a single substituent on the nitrogen atom, where this single substituent is an imine carbon atom; and X and Y are independently selected from the group consisting of a hydrogen atom; a heteroatom selected from group 13, 14, 15, 16 or 17 of the IUPAC Periodic Table of the Elements; a linear, branched and cyclic alkyl having at most 20 carbon atoms, optionally containing a heteroatom selected from group 13, 14, 15, 16 or 17 of the IUPAC Periodic Table of the Elements and an aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms, optionally containing a heteroatom selected from group 13, 14, 15, 16 or 7 of the IUPAC Periodic Table of the Elements.
本发明涉及一种催化剂体系,包括原催化剂、协同催化剂和外部电子给体,其中,外部电子给体包括具有以下结构的化合物,即式I:Si(L)n(OR11)4-n(式I),其中,Si是价态为4+的硅原子;O是价态为2-的氧原子,通过硅氧键与Si相连;n为1、2、3或4;R11是从线性、支链和环烷烃中选择的,其最多含有20个碳原子,并且是芳香取代和未取代的烃基,其碳原子数为6至20个;L是由式II表示的基团,其中,L通过氮硅键与硅原子连接;L在氮原子上有一个单取代基团,该单取代基团是亚胺碳原子;X和Y独立地选择自元素周期表中第13、14、15、16或17族的杂原子、最多含有20个碳原子的线性、支链和环烷烃,可选含有元素周期表中第13、14、15、16或17族的杂原子和含有6至20个碳原子的芳香取代和未取代的烃基,可选含有元素周期表中第13、14、15、16或17族的杂原子。