公开(公告)号：EP3140439B1

公开(公告)日：2025-04-09

申请号：EP15789550.9

申请日：2015-05-05

Inventor： WALDBAUER, JR. Robert O. ,  D'ALLURA, Norman J.

IPC: D01F1/10 ,  D01F1/02 ,  D01F6/70 ,  C08G18/48 ,  C08G18/75 ,  C08G18/76

公开(公告)号：EP2205780B2

公开(公告)日：2020-10-07

申请号：EP08847642.9

申请日：2008-10-29

Applicant: Invista Technologies S.à.r.l.

Inventor： BARNES, John, Alan ,  DEMPSTER, David, Forbes

IPC: D01F6/60 ,  D01F6/80 ,  D01D5/16

公开(公告)号：EP2350365B1

公开(公告)日：2019-05-01

申请号：EP09821056.0

申请日：2009-10-09

Applicant: Invista Technologies S.à.r.l.

Inventor： HIETPAS, Geoffrey, D. ,  DEWHURST, Robert

IPC: D04B1/14 ,  D03D15/00 ,  D06P1/39

公开(公告)号：EP2729607B1

公开(公告)日：2019-03-06

申请号：EP11767885.4

申请日：2011-07-07

Applicant: Invista Technologies S.à.r.l.

Inventor： SMITH, Steven, W.

IPC: D02G3/02 ,  D02G3/32 ,  D01F1/10 ,  D01F6/70 ,  D01F8/04 ,  D01D5/34 ,  D01F8/16

公开(公告)号：EP3280697A1

公开(公告)日：2018-02-14

申请号：EP16721293.5

申请日：2016-04-08

Applicant: INVISTA Textiles (U.K.) Limited ,  Invista Technologies S.à.r.l.

Inventor： CONRADIE, Alex

IPC: C07C227/40 ,  C07C51/47 ,  C07C53/126 ,  C07C229/06

CPC classification number: B01D15/362 ,  B01D15/1892 ,  B01D15/20 ,  B01D15/361 ,  C07C51/47 ,  C07C53/126 ,  C07C67/58 ,  C07C227/40 ,  C07C229/06

Abstract: This document describes a process for the high purity and high concentration recovery of monovalent products via continuous ion exchange from aqueous solution for further down-stream purification.

公开(公告)号：EP2935110B1

公开(公告)日：2017-10-04

申请号：EP13812439.1

申请日：2013-12-12

Applicant: Invista Technologies S.à.r.l.

Inventor： FORSYTH, Stewart ,  LIU, Aiguo ,  RENNER, Martin, J. ,  STAHLMAN, Brent, J.

IPC: C01C3/02

CPC classification number: C01C3/0212

公开(公告)号：EP3197856A1

公开(公告)日：2017-08-02

申请号：EP15767489.6

申请日：2015-09-23

Applicant: INVISTA Technologies S.à.r.l.

Inventor： URE, Alan Macpherson ,  LIMBACH, Antony Peter John

IPC: C07C51/265 ,  C07C51/44 ,  C07C51/48 ,  C07C63/26 ,  B01D11/00

Abstract: The present invention provides a process for the production of an aromatic dicarboxylic acid comprising the catalytic oxidation of a hydrocarbon precursor in an organic solvent, comprising the steps of: i) separating a vent gas from an oxidation stage into an organic solvent-rich liquid stream and a water-rich vapor stream in a distillation stage; and ii) separating an aqueous purification mother liquor comprising organic compounds from purified aromatic dicarboxylic acid crystals in a separation stage, characterized in that the process further comprises the steps of: iii) transferring the aqueous purification mother liquor from the separation stage to an extraction stage; iv) extracting said organic compounds from the aqueous purification mother liquor by contacting the aqueous purification mother liquor at a temperature of at least 90° C. with an organic liquid in the extraction stage to form an aqueous phase and an organic phase, wherein the concentration of said organic compounds in the aqueous phase is lower than the concentration of said organic compounds in the aqueous purification mother liquor; and v) transferring the aqueous phase to said distillation stage. The present invention further provides an apparatus for carrying out the process.

Abstract translation: 本发明提供了一种生产芳族二羧酸的方法，该方法包括在有机溶剂中催化氧化烃前体，该方法包括以下步骤：i）将排气从氧化阶段分离成富有机溶剂的液体流 和蒸馏阶段中的富含水的蒸气流; 和ii）在分离阶段将包含有机化合物的水性纯化母液与纯化的芳族二羧酸晶体分离，其特征在于所述方法进一步包括以下步骤：iii）将来自分离阶段的水性纯化母液转移到萃取阶段 ; iv）通过在提取阶段使至少90℃的温度下的含水提纯母液与有机液体接触以形成水相和有机相，从水提纯母液中提取所述有机化合物，其中所述有机相 水相中的化合物低于水性净化母液中所述有机化合物的浓度; 和v）将水相转移到所述蒸馏阶段。 本发明还提供了一种用于执行该过程的装置。

公开(公告)号：EP2785672B1

公开(公告)日：2016-10-26

申请号：EP12766786.3

申请日：2012-09-13

Applicant: Invista Technologies S.à.r.l.

Inventor： BADAT, Hashim, M. ,  GAUSE, Jason, C.

IPC: C07C29/80 ,  C07C29/88 ,  C07C33/046

CPC classification number: C07C29/80 ,  C07C29/88 ,  C07C33/046

公开(公告)号：EP3022172A1

公开(公告)日：2016-05-25

申请号：EP14750398.1

申请日：2014-07-16

Applicant: Invista Technologies S.à.r.l.

Inventor： AKI, Sudhir, N.V.K. ,  GARNER, James, Michael ,  TENN, William, J. ,  VOS, Thomas, E.

IPC: C07C255/07 ,  C07C253/34

CPC classification number: C07C253/10 ,  B01D3/143 ,  B01J31/185 ,  C07C253/34 ,  C07C255/07 ,  C07C255/04

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.

Abstract translation: 溶剂与催化剂至少部分分离。 催化剂包括镍和二齿磷含量配体。 分离方法包括蒸馏催化剂溶液。 控制蒸馏塔底馏分中2-戊烯腈与3-戊烯腈的比例，以减少异构化形成2-甲基-3-丁烯腈的3-戊烯腈的量。 3-戊烯腈异构化为2-甲基-3-丁烯腈，随后将2-甲基-3-丁烯腈异构化为2-甲基-2-丁烯腈，和/或2-甲基-3-丁烯腈氢化为甲基戊二烯代表损失 在己二腈的制备方法中的己二腈产率。

公开(公告)号：EP3013793A1

公开(公告)日：2016-05-04

申请号：EP14742059.0

申请日：2014-06-25

Applicant: Invista Technologies S.à.r.l.

Inventor： KANTAK, Milind V.

IPC: C07C253/34 ,  C07C255/04

CPC classification number: C07C253/34 ,  C07C255/04

Abstract: The present invention provides an improved process for preferentially concentrating 2-methylglutaronitrile from mixtures comprising 2-methyl-glutaronitrile and other C6 nitriles having very close relative volatilities, for example, 2-ethylsuccinonitrile and adiponitrile, in a particular integrated, continuous distillative refining process, advantageously utilizing a carefully staged distillation apparatus train and by operating in an optimized window for effective separation.

Abstract translation: 本发明提供了一种改进的方法，其优选地将2-甲基戊二腈从包含2-甲基 - 戊二腈和具有非常接近的相对挥发性的其它C 6腈（例如2-乙基琥珀腈和己二腈）的混合物中浓缩在特定的一体化连续蒸馏精制方法中， 有利地利用仔细分级的蒸馏装置列车并通过在优化的窗口中操作以进行有效的分离。