[EN] NON-CYCLOPENTADIENYL-BASED CHROMIUM CATALYSTS FOR OLEFIN POLYMERIZATION<br/>[FR] CATALYSEURS DE CHROME SANS CYCLOPENTADIÉNYLE POUR LA POLYMÉRISATION D'OLÉFINES
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2012155022A1
公开(公告)日:2012-11-15
Provided is a non-cyclopentadienyl-based chromium-ligand complex, preferably a chromium-ligand complex of formula (J): LCr(RA)m(D)k (J), wherein L is a non-Cp monoanionic ligand; Cr (chromium) is in a formal oxidation state of +3 or +2; when Cr formally is Cr+3, either m is 1 and RA is hydrocarbylene (a hydrocarbylene chromium-ligand complex of formula (J)) or m is 2 and each RA independently is hydrocarbyl (a dihydrocarbyl chromium-ligand complex of formula (J)), wherein each hydrocarbyl or hydrocarbylene of RA independently is unsubstituted or substituted by from 1 to 5 RAS; each RAS independently is a neutral aprotic heteroalkyl, neutral aprotic heterocycloalkyl, neutral aprotic heteroaryl, or neutral aprotic aryl; when Cr formally is Cr+2, m is 1 and RA is hydrocarbyl (a hydrocarbyl chromium-ligand complex of formula (J)); k is an integer of 0 or 1; D is absent when k is 0 or D is a neutral ligand when k is 1; wherein the chromium-ligand complex of formula (J) is overall neutral and lacks a cyclopentadienyl-based (Cp-based) moiety. Also provided is a chromium catalyst comprising or prepared from the complex. Also provided is a process of making the catalyst and a process employing the chromium catalyst for polymerizing the olefin monomer, especially a straight chain 1-alkene, to prepare the polyolefin, especially a partially chain-straightened poly( 1-alkene) or olefin block copolymer. Further provided is the partially chain- straightened poly( 1-alkene) or olefin block copolymer prepared thereby. Also provided is a high throughput workflow.
提供的是一种基于非环戊二烯基的铬配体复合物,优选为具有以下公式(J)的铬配体复合物:LCr(RA)m(D)k(J),其中L是一种非Cp单阴离子配体;Cr(铬)处于+3或+2的形式氧化态;当Cr形式上为Cr+3时,要么m为1且RA为烃基(具有以下公式(J)的烃基铬配体复合物),要么m为2且每个RA独立地为烃基(具有以下公式(J)的二烃基铬配体复合物),其中每个RA的烃基或烃基烯独立地未被取代或被1至5个RAS取代;每个RAS独立地为中性的无水性杂烷基、中性的无水性杂环烷基、中性的无水性杂芳基或中性的无水性芳基;当Cr形式上为Cr+2时,m为1且RA为烃基(具有以下公式(J)的烃基铬配体复合物);k为0或1的整数;当k为0时D不存在,当k为1时D为中性配体;其中具有公式(J)的铬配体复合物总体上为中性且不含环戊二烯基(Cp基)基团。还提供了包含或由该复合物制备的铬催化剂。还提供了制备该催化剂的方法以及使用铬催化剂聚合烯烃单体的方法,特别是直链1-烯烃,以制备聚烯烃,特别是部分链条直化的聚(1-烯烃)或烯烃嵌段共聚物。还提供了由此制备的部分链条直化的聚(1-烯烃)或烯烃嵌段共聚物。还提供了高通量工作流程。