Oxo-nitrogenated vanadium complex, catalytic system comprising said oxo-nitrogenated vanadium complex and process for (co)polymerising conjugated dienes
申请人:VERSALIS S.p.A.
公开号:US10301408B2
公开(公告)日:2019-05-28
An oxo-nitrogenated vanadium complex having the general formula (I): in which: —R1, R2, R3, R4, R5, R6 and R7, mutually identical or different, represent a hydrogen atom; or are selected from optionally halogenated, linear or branched C1-C20, preferably C1-C15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; —X1 and X2, mutually identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine, preferably chlorine; or are selected from linear or branched C1-C20, preferably C1-C15, alkyl groups, —OCOR8 groups or —OR8 groups in which R8 is selected from linear or branched C1-C20, preferably C1-C15, alkyl groups; —Y is selected from ethers such as, for example, diethyl ether, tetrahydrofuran (THF), dimethoxyethane, preferably is tetrahydrofuran (THF); —n is 0 or 1. Said oxo-nitrogenated vanadium complex having the general formula (I) may advantageously be used in a catalytic system for (co)polymerizing conjugated dienes.
具有通式(I)的氧
氮化钒络合物: 其中相互相同或不同的-R1、R2、R3、R4、R5、R6 和 R7 代表氢原子;或选自任选卤代、直链或支链 C1-C20,优选 C1-C15,烷基、任选取代的环烷基、任选取代的芳基;相互相同或不同的-X1 和 X2 代表卤原子,例如
氯、
溴、
碘,优选
氯;或选自直链或支链 C1-C20,优选 C1-C15,烷基、-OCOR8 基团或-OR8 基团,其中 R8 选自直链或支链 C1-C20,优选 C1-C15,烷基;-Y 选自
醚类,例如二
乙醚、
四氢呋喃(THF)、
二甲氧基乙烷,优选
四氢呋喃(THF);-n 为 0 或 1。具有通式(I)的所述氧化-
氮化钒络合物可有利地用于共轭二烯(共)聚合的催化系统中。