Bis-imine titanium complex, catalytic system comprising said bis-imine titanium complex and process for the (co)polymertzation of conjugated dienes
申请人:Versalis S.P.A.
公开号:US11299505B2
公开(公告)日:2022-04-12
Bis-imine titanium complex having general formula (I): wherein: R1 and R2, mutually identical or different, represent a hydrogen atom; or are selected from linear or branched, optionally halogenated, C1-C20 alkyl groups, preferably C1-C15, optionally substituted cycloalkyl groups; R3 and R4, mutually identical or different, represent a hydrogen atom; or are selected from linear or branched, optionally halogenated, C1-C20 alkyl groups, preferably C1-C15, optionally substituted cycloalkyl groups, optionally substituted aryl groups; X1, X2, X3 and X4, mutually identical or different, represent a halogen atom such as chlorine, bromine, iodine; or are selected from linear or branched C1-C20 alkyl groups, preferably C1-C15, —OCOR5 groups or —OR5 groups wherein R5 is selected from linear or branched C1-C20 alkyl groups, preferably C1-C15; or represent an acetylacetonate group (acac); provided that when R1 and R2 represent a methyl group and X1, X2, X3 and X4 represent a chlorine atom, R3 and R4 are different from 2,6-di-isopropylphenyl.
具有通式(I)的双
亚胺钛络合物: 其中R1和R2,相互相同或不同,代表氢原子;或选自线性或支链、任选卤化的C1-C20烷基,最好是C1-C15、任选取代的环烷基; R3和R4,相互相同或不同,代表氢原子;或选自线性或支链、任选卤化的C1-C20烷基,最好是C1-C15、任选取代的环烷基、任选取代的芳基;X1、X2、X3 和 X4,相互相同或不同,代表卤原子,如
氯、
溴、
碘;或选自直链或支链 C1-C20 烷基(最好是 C1-C15)、-OCOR5 基团或-OR5 基团,其中 R5 选自直链或支链 C1-C20 烷基(最好是 C1-C15);或代表
乙酰丙酮基团(acac);条件是当 R1 和 R2 代表甲基且 X1、X2、X3 和 X4 代表
氯原子时,R3 和 R4 与 2,6-二异丙基苯基不同。