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    Separating a solvent from a nickel catalyst by distillation
    1.
    发明授权
    Separating a solvent from a nickel catalyst by distillation 有权

    公开(公告)号：US10759741B2

    公开(公告)日：2020-09-01

    申请号：US14904726

    申请日：2014-07-16

    Applicant: INVISTA NORTH AMERICA S.A R.L.

    Inventor： Sudhir N. V. K. Aki ,  James M. Garner ,  William J. Tenn, III ,  Thomas E. Vos

    IPC: C07C253/10 ,  C07C253/34 ,  B01D3/14 ,  B01J31/18

    Abstract: A solvent is at least partially separated from a catalyst. The catalyst comprises nickel and a bidentate phosphorus-containing ligand. The method for separation involves distilling a catalyst solution. The ratio of 2-pentenenitrile to 3-pentenenitrile in distillation column bottoms is controlled to reduce the amount of 3-pentenenitrile which is isomerized to form 2-methyl-3-butenenitrile. Isomerization of 3-pentenenitrile to 2-methyl-3-butenenitrile and subsequent isomerization of 2-methyl-3-butenenitrile to 2-methyl-2-butenenitrile, and/or hydrocyanation of 2-methyl-3-butenenitrile to methylglutaronitrile represents a loss in adiponitrile yield in a process for making adiponitrile.

    Hydrolysis catalyst and process
    2.
    发明授权
    Hydrolysis catalyst and process 有权

    公开(公告)号：US10087201B2

    公开(公告)日：2018-10-02

    申请号：US14404030

    申请日：2013-05-24

    Applicant: INVISTA NORTH AMERICA S.A R.L.

    Inventor： Sudhir Aki ,  Thomas E. Vos

    IPC: C07F9/145 ,  C07F9/6574 ,  B01J31/18

    Abstract: A process of hydrolyzing a monodentate, bidentate or tridentate phosphorus-based phosphite ester ligand or ligand blend for a transition metal catalyst comprising contacting the ligand or ligand blend with a hydrolysis catalyst of the formula (R11X11)nP(OH)3-n where n is 0, 1 or 2 wherein the ligand or ligand blend comprises one or more of (i) a bidentate biphosphite ligand of formula (III), (R12—X12)(R13—X13)P—X14—Y—X24—P(X22—R22)(X23—R23), (ii) a tridentate triphosphite ligand of formula (IIIA) (R12—X12)(R13—X13)P—X14—Y—X32—P(X34—R34)—(X33—Y2—K24—P(X23—R23)—(X22—R22) or (iii) a monodentate phosphite ligand of formula (IV) P(X1—R1)(X2—R2)(X3—R3) where each X is oxygen or a bond and each Y is an optionally substituted C6-C20 arylene, followed by separation of the ligand hydrolysis products.

    STABLE LIGAND MIXTURES AND PROCESSES FOR MAKING SAME
    4.
    发明申请
    STABLE LIGAND MIXTURES AND PROCESSES FOR MAKING SAME 有权
    稳定的配体混合物和制备方法

    公开(公告)号：US20150158812A1

    公开(公告)日：2015-06-11

    申请号：US14404068

    申请日：2013-05-24

    Applicant: INVISTA NORTH AMERICA S.A R.L.

    Inventor： Sudhir Aki ,  William J. Tenn, III ,  Thomas E. Vos

    IPC: C07C253/30

    CPC classification number: C07C253/30 ,  C07F9/145 ,  C07F9/4006 ,  C07F9/65744 ,  C07F15/04

    Abstract: A process of stabilizing a bidentate or tridentate phosphorus-based phosphite ester ligand or mixture thereof in a hydrocyanation reaction milieu comprising water, wherein the ligand or ligand mixture comprises one or more of (i) a bidentate biphosphite ligand of formula (III), (R12—X12) (R13—X13) P—X14—Y—X24—P(X22—R22) (X23—R23) or (ii) a tridentate triphosphite ligand of formula (IIIA) (R12—X12) (R13—X13) P—X14—Y—X32—P(X34—R34)—(X33—Y2—R24—P(X23—R23)—(X22—R22) where each X is oxygen or a bond and each Y is an optionally substituted C6-C20 arylene group, comprising admixing the bidentate and/or tridentate with a stabilizing amount of one or more monodentate phosphite ligand of formula P(X1—R1)(X2—R2)(X3—R3) where each X is oxygen or a bond, wherein the monodentate ligand has a rate of hydrolysis greater than the rate of hydrolysis of the bidentate or tridentate ligand in the presence of water in a hydrocyanation reaction milieu, and thereby preserve concentrations and proportions of the bidentate and/or tridentate ligand(s) in the ligand blend.

    Abstract translation: 在包含水的氢化氰化反应环境中稳定二齿或三齿磷基亚磷酸酯配体或其混合物的方法，其中配体或配体混合物包含（i）式（III）的二齿二亚磷酸酯配体，（ R12-X12）（R13-X13）P-X14-Y-X24-P（X22-R22）（X23-R23）或（ii）式（IIIA）（R12-X12）（R13-X13）的三齿三亚磷酸酯配体 ）X-X-14-Y-X32-P（X34-R34） - （X33-Y2-R24-P（X23-R23） - （X22-R22）其中X为氧或键， C6-C20亚芳基，其包括将二齿和/或三齿与稳定量的一种或多种式P（X1-R1）（X2-R2）（X3-R3）的单齿亚磷酸酯配体（X-R 3）混合，其中每个X为氧或 键，其中所述单齿配体的水解速率大于在氢氰化反应环境中的水存在下二齿或三齿配体的水解速率，并且th 在配体共混物中保留双齿和/或三齿配体的浓度和比例。

    Pentenenitrile isomerization
    5.
    发明授权
    Pentenenitrile isomerization 有权
    戊烯腈异构化

    公开(公告)号：US09586892B2

    公开(公告)日：2017-03-07

    申请号：US14649634

    申请日：2013-12-05

    Applicant: INVISTA NORTH AMERICA S.A R.L.

    Inventor： Sudhir N. V. K. Aki ,  William J. Tenn, III ,  Thomas E. Vos

    IPC: C07C253/30

    CPC classification number: C07C253/30 ,  C07C255/07

    Abstract: Pentenenitrile oligomers formed in a process for isomerizing cis-2-pentenenitrile to 3-pentenenitrile are minimized in the presence of an aluminum oxide catalyst. The process comprises providing an aluminum oxide catalyst having an alkali metal and/or alkaline earth metal and/or iron content, measured in the form of alkali metal oxide and/or alkaline earth metal oxide and/or iron oxide, respectively of less than 5000 ppm by weight.

    Abstract translation: 在氧化铝催化剂存在下使在顺式-2-戊烯腈异构化为3-戊烯腈的方法中形成的戊烯腈低聚物最小化。 该方法包括提供具有碱金属和/或碱土金属和/或铁含量的氧化铝催化剂，其以碱金属氧化物和/或碱土金属氧化物和/或氧化铁的形式分别测量为小于5000 重量ppm。

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