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264 条记录 (耗时 0.073 秒)

    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

    申请人： INVISTA NORTH AMERICA S.A R.L.

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

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

    摘要： 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
    4.
    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

    申请人： INVISTA NORTH AMERICA S.A R.L.

    发明人： Sudhir Aki ,  Thomas E. Vos

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

    摘要： 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.

    Copolyether ester polyol process
    6.
    发明授权
    Copolyether ester polyol process 有权

    公开(公告)号：US09840580B2

    公开(公告)日：2017-12-12

    申请号：US15108486

    申请日：2015-01-05

    申请人： INVISTA TECHNOLOGIES S.A.R.L.

    发明人： Richard P. Beatty ,  Qun Sun

    IPC分类号： C08G65/30 ,  C08G63/672 ,  C08G65/332 ,  C08G65/20 ,  C08G65/26

    CPC分类号： C08G63/672 ,  C08G65/20 ,  C08G65/2696 ,  C08G65/30 ,  C08G65/3322

    摘要： Disclosed is a process for manufacturing copolyether ester polyol comprising: (1) providing feedstock comprising polytetramethylene ether glycol having a number average molecular weight of 350 g/mol or less and an oligomeric cyclic ether content of 4.0% by weight or more and a diacid composition selected from alpha-omega alkanedioic acids of formula HO2C—(CH2)n—CO2H, where n is from 2 through 16 to a reaction zone maintained at reaction conditions to produce a crude polyol product; (2) feeding the crude polyol product of step (1) to a separation zone at separation conditions to produce a first separation product having an oligomeric cyclic ether content of 2.0% by weight or greater, and a second separation product comprising copolyether ester polyol having an oligomeric cyclic ether content of less than 2.0% by weight; and (3) recovering the second separation product.

    AMORPHOUS HIGH PERFORMANCE POLYAMIDE
    9.
    发明申请
    AMORPHOUS HIGH PERFORMANCE POLYAMIDE 审中-公开

    公开(公告)号：US20170081473A1

    公开(公告)日：2017-03-23

    申请号：US15310603

    申请日：2015-05-14

    申请人： INVISTA NORTH AMERICA S.A R.L.

    发明人： Michael BENSTEAD ,  Charles Richard LANGRICK

    IPC分类号： C08G69/26

    摘要： The disclosure relates to an improved method of producing MPMD based amorphous, semi-aromatic polyamides in order to improve their mechanical properties. It also relates to improved formulations of these polyamides which have further improved mechanical properties by the incorporation of greater amounts of isophthalic acid. The disclosure relates to an improved method of producing MPMD based amorphous, semi-aromatic polyamides in order to improve their mechanical properties. It also relates to improved formulations of these polyamides which have further improved mechanical properties by the incorporation of greater amounts of isophthalic acid.

    Method for producing nitrile compounds from ethylenically unsaturated compounds
    10.
    发明授权
    Method for producing nitrile compounds from ethylenically unsaturated compounds 有权
    由烯属不饱和化合物制备腈化合物的方法

    公开(公告)号：US09309189B2

    公开(公告)日：2016-04-12

    申请号：US14348283

    申请日：2012-09-27

    申请人： RHODIA OPERATIONS

    发明人： Sergio Mastroianni ,  Paul Pringle ,  Jonathan Hopewell ,  Michael Garland

    IPC分类号： C07C253/10

    CPC分类号： C07C253/10 ,  C07C255/03

    摘要： The present invention relates to a method for the hydrocyanation of organic ethylenically unsaturated compounds including at least one nitrile function. The invention specifically relates to a method for the hydrocyanation of a hydrocarbon compound including at least one ethylenic unsaturation by a reaction with hydrogen cyanide in a liquid medium and in the presence of a catalyst including a metal element selected from the transition metals and an organophosphorous ligand, the organophosphorous ligand including a compound of general formula (I), where R1 and R2, which are identical or different, are a linear or branched alkyl radical having 1-12 carbon atoms, which can include heteroatoms, or an optionally substituted aromatic or cycloaliphatic radical that can include heteroatoms, wherein the covalent bond between P and R1, and that between P and R2, are P—C bonds.

    摘要翻译： 本发明涉及含有至少一个腈官能团的有机烯属不饱和化合物的氢氰化方法。 本发明具体涉及通过在液体介质中与氰化氢反应并且在包含选自过渡金属和有机磷配体的金属元素的催化剂存在下，包含至少一个烯属不饱和度的烃化合物的氢氰化方法 包括通式（I）化合物的有机磷配体，其中相同或不同的R 1和R 2是具有1-12个碳原子的直链或支链烷基，其可以包括杂原子或任选取代的芳族或 可以包括杂原子的脂环族基团，其中P和R 1之间的共价键以及P和R 2之间的共价键是P-C键。