申请人:Saudi Basic Industries Corporation
公开号:EP2837634A1
公开(公告)日:2015-02-18
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 (OR1)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;
R1 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 17 of the IUPAC Periodic Table of the Elements.
本发明涉及一种催化剂体系,包括前催化剂、共催化剂和外部电子给体,其中所述外部电子给体包括具有以下结构的化合物,其符号如下:
Si(L)n(OR1)4-n (式I)
其中,
Si是一个价态为4+的硅原子;
O是一个价态为2-的氧原子,并且O通过硅氧键与Si相连;
n为1、2、3或4;
R1选择自线性、支链和环烷基,其最多有20个碳原子,以及含有6至20个碳原子的芳香基取代和未取代的碳氢基;
L是由以下式子表示的一个基团,其中,
L通过氮硅键与硅原子相连;
L在氮原子上有一个单取代基团,其中这个单取代基团是一个亚胺碳原子;
X和Y独立地选择自氢原子;IUPAC元素周期表的13、14、15、16或17族中的杂原子;最多有20个碳原子的线性、支链和环烷基,可选地含有IUPAC元素周期表的13、14、15、16或17族中的杂原子;以及含有6至20个碳原子的芳香基取代和未取代的碳氢基,可选地含有IUPAC元素周期表的13、14、15、16或17族中的杂原子。