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    Bis-imine titanium complex, catalytic system comprising said bis-imine titanium complex and process for the (co)polymertzation of conjugated dienes
    1.
    发明授权
    Bis-imine titanium complex, catalytic system comprising said bis-imine titanium complex and process for the (co)polymertzation of conjugated dienes 有权

    公开(公告)号：US11299505B2

    公开(公告)日：2022-04-12

    申请号：US16649131

    申请日：2018-09-28

    申请人： Versalis S.P.A.

    发明人： Guido Pampaloni ,  Giovanni Ricci ,  Anna Sommazzi ,  Massimo Guelfi ,  Giuseppe Leone ,  Francesco Masi

    IPC分类号： C07F7/28 ,  C08F4/64 ,  C08F4/642 ,  C08F36/06

    摘要： 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.

    Process for the preparation of (co) polymers of conjugated dienes in the presence of a catalytic system comprising a bis-imine complex of cobalt
    4.
    发明授权
    Process for the preparation of (co) polymers of conjugated dienes in the presence of a catalytic system comprising a bis-imine complex of cobalt 有权

    公开(公告)号：US09617360B2

    公开(公告)日：2017-04-11

    申请号：US14443093

    申请日：2013-12-19

    申请人： Versalis S.P.A.

    发明人： Giovanni Ricci ,  Anna Sommazzi ,  Giuseppe Leone ,  Francesco Masi ,  Aldo Boglia

    IPC分类号： C08F4/80 ,  C08F36/00 ,  C08F36/06 ,  C08F136/06 ,  C08F4/70

    CPC分类号： C08F36/06 ,  C08F4/7096 ,  C08F136/06 ,  C08F4/7006

    摘要： 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-imine complex of cobalt having general formula (I) wherein: —n is 0 or 1; —Y represents a group —CR′R″— wherein R′ and R″, equal to or different from each other, represent a hydrogen atom; or a linear or branched C1-C20, preferably C1-C15, alkyl group; or a divalent aromatic group optionally substituted; —R1 and R2, equal to or different from each other, represent a hydrogen atom; or they are selected from a linear or branched Ci-C2o/preferably C1-C15, alkyl group optionally halogenated, cycloalkyl groups optionally substituted; 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 4 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 heteroatoms such as, for example, oxygen, sulfur, nitrogen, silicon, phosphorous, selenium; R3 and R4, equal to or different from each other, represent a hydrogen atom; or they are selected from a linear or branched Ci-C20, preferably C1-C15, alkyl groups optionally halogenated, cycloalkyl groups optionally substituted, aryl groups optionally substituted; or R2 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 Ci-C2o, preferably C1-C15 alkyl groups, said cycle optionally containing other heteroatoms such as, for example, oxygen, sulfur, nitrogen, silicon, phosphorous, selenium; or R1 and R3 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, —OCOR5 groups or —OR3 groups wherein R5 is selected from linear or branched C1-C20, preferably C1-C15, alkyl groups.

    PROCESS FOR THE PREPARATION OF POLYISOPRENE WITH A MAINLY ALTERNATING CIS-1,4- ALT-3,4 STRUCTURE IN THE PRESENCE OF A CATALYTIC SYSTEM COMPRISING A PYRIDYL IRON COMPLEX
    6.
    发明申请
    PROCESS FOR THE PREPARATION OF POLYISOPRENE WITH A MAINLY ALTERNATING CIS-1,4- ALT-3,4 STRUCTURE IN THE PRESENCE OF A CATALYTIC SYSTEM COMPRISING A PYRIDYL IRON COMPLEX 审中-公开

    公开(公告)号：US20200369805A1

    公开(公告)日：2020-11-26

    申请号：US16962056

    申请日：2019-01-16

    申请人： VERSALIS S.P.A.

    发明人： Giovanni Ricci ,  Anna Sommazzi ,  Guido Pampaloni ,  Giuseppe Leone ,  Francesco Masi

    IPC分类号： C08F136/08 ,  C07F15/02 ,  B60C1/00 ,  A43B1/10

    摘要： Process for the preparation of polyisoprene with a mainly alternating cis-1,4-alt-3,4 structure comprising polymerizing isoprene in the presence of a catalytic system comprising: (a) at least one pyridyl iron complex having general formula (I): wherein: R1 is selected from linear or branched C1-C20, preferably C1-C15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; R2 is selected from linear or branched C1-C10, preferably C1-C3, alkyl groups; X, mutually identical or different, 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, —OCOR3 groups or —OR3 groups wherein R3 is selected from linear or branched C1-C20, preferably C1-C15, alkyl groups. n is 2 or 3; (b) at least one co-catalyst selected from organo-derivative compounds of aluminum, preferably from (b1) aluminoxanes having general formula (II): (R4)2—Al—O—[—Al(R5)—O—]m—Al—(R6)2  (II) wherein R4, R5 and R6, mutually identical or different, represent a hydrogen atom, or a halogen atom such as, for example, chlorine, bromine, iodine, fluorine; or they are selected from linear or branched C1-C20 alkyl groups, cycloalkyl groups, aryl groups, said groups being optionally substituted with one or more silicon or germanium atoms; and m is an integer ranging from 0 to 1000; (b2) aluminum compounds having general formula (III): Al(R7)(R8)(R9)  (III) wherein R7 is a hydrogen atom, or is selected from linear or branched C1-C20 alkyl groups, cycloalkyl groups, aryl groups, alkylaryl groups, arylalkyl groups, alkoxy groups; R8 and R9, mutually identical or different, are selected from linear or branched C1-C20 alkyl groups, cycloalkyl groups, aryl groups, alkylaryl groups, arylalkyl groups; wherein the molar ratio between the aluminum present in the co-catalyst and the iron present in the iron pyridyl complex having general formula (I) is ranging from 5 to 60, preferably from 8 to 55.

    Process for the preparation of syndiotactic 1,2-polybutadiene in the presence of a catalytic system comprising a pyridyl iron complex
    10.
    发明授权
    Process for the preparation of syndiotactic 1,2-polybutadiene in the presence of a catalytic system comprising a pyridyl iron complex 有权

    公开(公告)号：US10954326B2

    公开(公告)日：2021-03-23

    申请号：US16341142

    申请日：2017-10-20

    申请人： Versalis S.P.A.

    发明人： Anna Sommazzi ,  Guido Pampaloni ,  Giovanni Ricci ,  Francesco Masi ,  Giuseppe Leone

    IPC分类号： C08F4/52 ,  C08F136/06 ,  A43B13/04 ,  C08F4/70 ,  C08F4/80 ,  C07C251/02

    摘要： Process for the preparation of syndiotactic 1,2-polybutadiene comprising polymerising 1,3-butadiene in the presence of a catalytic system comprising: —at least one pyridyl iron complex having the general formula (I), in which: —R1 represents a hydrogen atom; or a methyl group; —R2 represents a hydrogen atom; or is selected from linear or branched C1-C10 alkyl groups; —X, identical or different to one another, represent a halogen atom; or are selected from linear or branched, C1-C20 alkyl groups, —OCOR3 groups or —OR3 groups in which R3 is selected from linear or branched C1-C20 alkyl groups; —n is 2 or 3; —at least one aluminoxane having the general formula (II), (R4)2-AI-O-[-AI(R5)—O-]m-AI-(R6)2 (ll) in which R4, R5 and R6, identical or different to one another, represent a hydrogen atom, or a halogen atom; or are selected from linear or branched C1-C20 alkyl groups, cycloalkyi groups, aryl groups, said groups being optionally substituted with one or more silicon atoms or germanium; and m is an integer ranging from 0 to 1000; in which the molar ratio between the aluminium present in the aluminoxane having the general formula (II) and the iron present in the pyridyl iron complex having the general formula (I) is ranging from 5 to 20.