Process for the preparation of (co)polymers of conjugated dienes in the presence of a catalytic system comprising a bis-imino-pyridine complex of cobalt
申请人:Versalis S.P.A.
公开号:US09475897B2
公开(公告)日:2016-10-25
Process for the preparation of (co)polymers of conjugated dienes which comprises polymerizing at least one conjugated diene in the presence of a catalytic system comprising at least one bis-imino-pyridine complex of cobalt having general formula (I): wherein: R2 and R3, equal to or different from each other, represent a hydrogen atom; or they are selected from linear or branched C1-C20 preferably C1-C15, alkyl groups, optionally halogenated, cycloalkyl groups optionally substituted, aryl groups optionally substituted; R1 and R4, different from each other, represent a hydrogen atom; or they are selected from linear or branched C1-C20 preferably C1-C15, alkyl groups, optionally halogenated, cycloalkyl groups optionally substituted, aryl groups optionally substituted; arylalkyl groups; or R1 and R2 can be optionally bound to each other to form, together with the other atoms to which they are bound, a cycle containing from 3 to 6 carbon atoms, saturated, unsaturated, or aromatic, optionally substituted with linear or branched C1-C20, preferably C1-C15, alkyl groups, said cycle optionally containing other heteroatoms such as, for example, oxygen, sulfur, nitrogen, silicon, phosphorous, selenium; or R3 and R4, can be optionally bound to each other to form, together with the other atoms to which they are bound, a cycle containing from 3 to 6 carbon atoms, saturated, unsaturated, or aromatic, optionally substituted with linear or branched C1-C20, preferably C1-C15, alkyl groups, said cycle optionally containing other heteroatoms such as, for example, oxygen, sulfur, nitrogen, silicon, phosphorous, selenium; R5, R6 and R7, equal to or different from each other, represent a hydrogen atom, or they are selected from linear or branched C1-C20, preferably C1-C15, alkyl groups, optionally halogenated, cycloalkyl groups optionally substituted; aryl groups optionally substituted; arylalkyl groups; or R5 and R6, can be optionally bound to each other to form, together with the other atoms to which they are bound, a cycle containing from 3 to 6 carbon atoms, saturated, unsaturated, or aromatic, optionally substituted with linear or branched C1-C20, preferably C1-C15, alkyl groups, said cycle optionally containing other heteroatoms such as, for example, oxygen, -sulfur, nitrogen, silicon, phosphorous, selenium; or R6 and R7, can be optionally bound to each other to form, together with the other atoms to which they are bound, a cycle containing from 3 to 6 carbon atoms, saturated, unsaturated, or aromatic, optionally substituted with linear or branched C1-C20, preferably C1-C15, alkyl groups, said cycle optionally containing other heteroatoms such as, for example, oxygen, sulfur, nitrogen, silicon, phosphorous, selenium; X1 and X2, equal to or different from each other, represent a halogen atom such as, for example, chlorine, bromine, iodine; or they are selected from linear or branched C1-C20, preferably C1-C15, alkyl groups, —OCOR8 groups or —OR8 groups wherein R8 is selected from linear or branched C1-C20/preferably C1-C15, alkyl groups.
制备共轭二烯类(c0)聚合物的方法包括在至少一个共轭二烯类存在的情况下,在至少含有一个具有一般式(I)的钴的双亚胺吡啶配合物的催化系统存在下聚合至少一个共轭二烯类:其中:R2和R3,彼此相等或不同,代表氢原子;或它们选自线性或支链的C1-C20,优选C1-C15,烷基基团,可选择卤代,环烷基基团可选择取代,芳基团可选择取代;R1和R4,彼此不同,代表氢原子;或它们选自线性或支链的C1-C20,优选C1-C15,烷基基团,可选择卤代,环烷基基团可选择取代,芳基团可选择取代;芳基烷基基团;或R1和R2可以选择性地结合在一起,与它们结合的其他原子一起形成含有从3到6个碳原子的环,饱和的,不饱和的,或芳香的,可选择性地取代线性或支链的C1-C20,优选C1-C15,烷基基团,所述环可选择性地含有其他杂原子,例如氧,硫,氮,硅,磷,硒;或R3和R4可以选择性地结合在一起,与它们结合的其他原子一起形成含有从3到6个碳原子的环,饱和的,不饱和的,或芳香的,可选择性地取代线性或支链的C1-C20,优选C1-C15,烷基基团,所述环可选择性地含有其他杂原子,例如氧,硫,氮,硅,磷,硒;R5,R6和R7,彼此相等或不同,代表氢原子,或它们选自线性或支链的C1-C20,优选C1-C15,烷基基团,可选择卤代,环烷基基团可选择取代;芳基团可选择取代;芳基烷基基团;或R5和R6可以选择性地结合在一起,与它们结合的其他原子一起形成含有从3到6个碳原子的环,饱和的,不饱和的,或芳香的,可选择性地取代线性或支链的C1-C20,优选C1-C15,烷基基团,所述环可选择性地含有其他杂原子,例如氧,硫,氮,硅,磷,硒;或R6和R7可以选择性地结合在一起,与它们结合的其他原子一起形成含有从3到6个碳原子的环,饱和的,不饱和的,或芳香的,可选择性地取代线性或支链的C1-C20,优选C1-C15,烷基基团,所述环可选择性地含有其他杂原子,例如氧,硫,氮,硅,磷,硒;X1和X2,彼此相等或不同,代表卤原子,例如氯,溴,碘;或它们选自线性或支链的C1-C20,优选C1-C15,烷基基团,—OCOR8基团或—OR8基团,其中R8选自线性或支链的C1-C20/优选C1-C15,烷基基团。