中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

10 records (took 0.017 seconds)

    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
    2.
    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

    Applicant: VERSALIS S.P.A.

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

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

    Abstract: 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.

    Bis-imine titanium complex, catalytic system comprising said bis-imine titanium complex and process for the (co)polymertzation of conjugated dienes
    4.
    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

    Applicant: Versalis S.P.A.

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

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

    Abstract: 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 preparing conjugated diene (co)polymers in the presence of a catalytic system comprising a pyridyl iron (III) complex
    5.
    发明授权
    Process for preparing conjugated diene (co)polymers in the presence of a catalytic system comprising a pyridyl iron (III) complex 有权

    公开(公告)号：US10793653B2

    公开(公告)日：2020-10-06

    申请号：US16343716

    申请日：2017-10-20

    Applicant: Versalis S.p.A.

    Inventor： Giovanni Ricci ,  Guido Pampaloni ,  Anna Sommazzi ,  Massimo Guelfi ,  Francesco Masi

    IPC: C08F36/06 ,  C07F15/02 ,  C08F36/08 ,  C08F136/08 ,  C08F136/06 ,  C08F236/06 ,  C08F4/70 ,  C08L9/00 ,  C08F236/08

    Abstract: A process for preparing conjugated diene (co)polymers comprising polymerizing at least one conjugated diene in the presence of a catalytic system comprising: (a) at least one pyridyl iron (III) complex having general formula (I) or (II): wherein: —R1, R2, R3 and R4, identical or different, represent a hydrogen atom; or are selected from linear or branched, optionally halogenated C1-C20, preferably C1-C15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; —R5 represents a hydrogen atom, or is selected from linear or branched, optionally halogenated C1-C20, preferably C1-C15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; —X, identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine; or are selected from linear or branched C1-C20, preferably C1-C15, alkyl groups, —OCOR6 groups or —OR6 groups wherein R6 is selected from linear or branched C1-C20, preferably C1-C15, alkyl groups. —n is 3; (b) at least one co-catalyst selected from organo-aluminum derivatives, preferably from: (b1) aluminum compounds having general formula (III): Al(R7)(R8)(R9) (IIl) wherein R7 represents 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, identical or different, are selected from linear or branched C1-C20 alkyl groups, cycloalkyl groups, aryl groups, alkylaryl groups, arylalkyl groups; (b2) aluminoxanes having general formula (IV): (R10)2—Al—O—[-AI(R11)—O-]m-AI-(R12)2 (IV), wherein R10, R11 and R12, identical or different, represent a hydrogen atom, or a halogen atom such as chlorine, bromine, iodine, fluorine; or 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; (b3) partially hydrolyzed organo-aluminum derivatives; (b4) haloaluminum alkyls having general formula (V) or (VI): AI(R13)p(X′)3-p (V) AI2(R13)q(X′)3-q (VI) wherein p is 1 or 2; q is an integer ranging from 1 to 5; R13, identical or different, are selected from linear or branched C1-C20 alkyl groups; X′ represents a chlorine or bromine atom, preferably chlorine; provided that said co-catalyst (b) is not selected from organo-boron derivatives.

    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.
    发明授权
    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 有权

    公开(公告)号：US11746167B2

    公开(公告)日：2023-09-05

    申请号：US16962056

    申请日：2019-01-16

    Applicant: VERSALIS S.P.A.

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

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

    CPC classification number: C08F136/08 ,  A43B1/10 ,  B60C1/0016 ,  C07F15/025

    Abstract: 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
    9.
    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

    Applicant: Versalis S.P.A.

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

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

    Abstract: 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.

    Oxo-nitrogenated vanadium complex, catalytic system comprising said oxo-nitrogenated vanadium complex and process for (co)polymerising conjugated dienes
    10.
    发明授权
    Oxo-nitrogenated vanadium complex, catalytic system comprising said oxo-nitrogenated vanadium complex and process for (co)polymerising conjugated dienes 有权

    公开(公告)号：US10301408B2

    公开(公告)日：2019-05-28

    申请号：US15538338

    申请日：2015-12-23

    Applicant: VERSALIS S.p.A.

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

    IPC: C08F4/68 ,  C08F136/06 ,  C08F136/08

    Abstract: 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.

Patent Agency Ranking