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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
    71.
    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.

    Method of regioselective synthesis of polyesters from asymmetric diols
    73.
    发明授权
    Method of regioselective synthesis of polyesters from asymmetric diols 有权

    公开(公告)号：US11155675B2

    公开(公告)日：2021-10-26

    申请号：US16316839

    申请日：2017-07-26

    申请人： versalis S.p.A.

    发明人： Mirco Nodari ,  Aldo Longo ,  Martino Colonna ,  Claudio Gioia

    IPC分类号： C08G63/16 ,  C08G63/87

    摘要： A method for synthesizing regioregular polyesters, starting from asymmetric diols, may provide the polymer ordered structure and advantageous physical-chemical properties. Such methods can make it is possible to obtain regioregular polyesters having high glass transition temperatures Tg and crystalline properties. In the case in which the asymmetric diols are used in a pure enantiomeric form, with respect to the chiral carbon bound to the secondary hydroxyl, through the above-mentioned method it is possible to obtain regioregular and stereoregular polyesters, which may have thermal and crystalline properties further ameliorative with respect to non-chiral regioregular polymers.

    Block expandable polymeric compositions
    74.
    发明授权
    Block expandable polymeric compositions 有权

    公开(公告)号：US11078342B2

    公开(公告)日：2021-08-03

    申请号：US16314098

    申请日：2017-07-28

    申请人： Versalis S.p.A.

    发明人： Giovanni Cuder ,  Stefano Comba

    IPC分类号： C08J9/14 ,  C08J9/16 ,  C08J9/232 ,  C08J9/00 ,  C08L25/06 ,  C08J9/224 ,  C09D125/06

    摘要： The present invention relates to an expandable polymeric composition that comprises: a) from 60% to 88% by weight of a vinyl aromatic polymer and/or copolymer, calculated respect to (a)+(b); b) from 12% to 40% by weight of a block copolymer, containing at least one vinyl aromatic polymer and/or copolymer and at least one hydrogenated diene polymer, calculated respect to (a)+(b); c) from 3 parts to 10 parts by weight of a blowing agent, calculated on 100 parts of (a)+(b).

    PROCESS FOR PREPARING RANDOM BUTADIENE-ISOPRENE COPOLYMERS HAVING A HIGHT CONTENT OF CIS-1,4 UNITS
    75.
    发明申请
    PROCESS FOR PREPARING RANDOM BUTADIENE-ISOPRENE COPOLYMERS HAVING A HIGHT CONTENT OF CIS-1,4 UNITS 有权

    公开(公告)号：US20210198404A1

    公开(公告)日：2021-07-01

    申请号：US17058413

    申请日：2019-05-29

    申请人： VERSALIS S.P.A.

    发明人： Costantino Perretta ,  Silvana Di Martino

    IPC分类号： C08F236/06 ,  C08F236/08 ,  C08F4/54 ,  C08F4/14 ,  C08F2/06 ,  C08K3/04 ,  C08K3/36

    摘要： Process for preparing a random butadiene-isoprene copolymer having a high content of cis-1,4 units comprising copolymerizing butadiene and isoprene, in the presence of at least one organic solvent, and a catalytic system prepared in situ comprising: (a1) at least one neodymium carboxylate soluble in said organic solvent, containing a variable amount of water, the H2O/Nd molar ratio being between 0.001/1 and 0.50/1; (a2) at least one aluminum alkyl compound; (a3) at least one aluminum alkyl compound containing at least one halogen atom. The random butadiene-isoprene copolymer having a high content of cis-1,4 units obtained from the abovementioned process may be advantageously used in a number of applications ranging from the modification of plastics [for example, obtainment of high impact polystyrene (HIPS)], to the production of tires, in particular the production of tire treads and/or of tire sidewalls.

    PROCESS FOR PRODUCING OLEFINS FROM ALCOHOLS
    77.
    发明申请
    PROCESS FOR PRODUCING OLEFINS FROM ALCOHOLS 有权

    公开(公告)号：US20210147316A1

    公开(公告)日：2021-05-20

    申请号：US16628052

    申请日：2018-07-02

    申请人： Versalis S.p.A.

    发明人： Giovanni Antonio FOIS ,  Roberto BUZZONI

    IPC分类号： C07C1/24 ,  C07C29/145 ,  C07C37/08

    摘要： The invention relates to a process for producing olefins from alcohols by means of catalytic dehydration. More in particular, the present invention relates to a process for producing at least one olefin by dehydrating at least one alcohol having a number of carbon atoms comprised between 2 and 6, preferably comprised between 2 and 4, more preferably at least one alcohol having a number of carbon atoms of 3, even more preferably 2-propanol, in the presence of a catalytic material comprising at least one large pore zeolite in acid form, or predominantly acid form, preferably selected from the group consisting of zeolites having BEA structure, MTW structure and mixtures thereof, and preferably at least one inorganic binder, more preferably alumina. Preferably, the olefin has the same number of carbon atoms as the starting alcohol. Furthermore, preferably the olefin does not contain conjugated double bonds and more preferably the olefin is a mono-olefin. Subject matter of the present invention is also the use of the aforementioned olefin in an alkylation process of aromatic hydrocarbons, in particular the use of propylene for alkylating benzene to provide cumene. The aforementioned cumene can be used in an integrated process for preparing phenol and acetone, in accordance with the Hock method, wherein acetone can be reduced to 2-propanol, to be recycled to the process of the invention to obtain propylene again.

    Process for the dehydration of oxygenated compounds
    78.
    发明授权
    Process for the dehydration of oxygenated compounds 有权

    公开(公告)号：US10894750B2

    公开(公告)日：2021-01-19

    申请号：US15540399

    申请日：2016-02-22

    申请人： versalis S.p.A.

    发明人： Nicola Vecchini ,  Gianni Girotti

    IPC分类号： C07C1/24 ,  B01J23/10 ,  C07C29/60 ,  B01J37/03 ,  C07C11/167 ,  B01J21/12 ,  B01J35/02

    摘要： The present invention relates to a process for the dehydration of at least one oxygenated compound, preferably selected from saturated alcohols, unsaturated alcohols, diols, ethers, in the presence of at least one dehydration catalyst selected from cerium oxide (CeO2), aluminium oxide (γ-Al2O3), aluminium silicate, silica-aluminas (SiO2—Al2O3), aluminas, zeolites, sulfonated resins, ion-exchange resins, metal oxides (for example, lanthanum oxide, zirconium oxide, tungsten oxide, thallium oxide, magnesium oxide, zinc oxide); of at least one basic agent selected from ammonia (NH3), or from inorganic or organic compounds containing nitrogen capable of developing ammonia (NH3) during said dehydration process; and, optionally, of silica (SiO2), or of at least one catalyst for the dissociation of ammonia (NH3) selected from catalysts comprising silica (SiO2), preferably of silica (SiO2).

    Process for preparing conjugated diene (co)polymers in the presence of a catalytic system comprising a pyridyl iron (III) complex
    79.
    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

    申请人： Versalis S.p.A.

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

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

    摘要： 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.