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.

公开(公告)号：US09440912B2

公开(公告)日：2016-09-13

申请号：US14649644

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: C07C235/30 ,  C07C255/07 ,  B01J23/06 ,  B01J23/10 ,  B01J23/26 ,  B01J23/70 ,  C07C253/30 ,  B01J21/08 ,  B01J21/10 ,  B01J23/20 ,  B01J23/30 ,  B01J23/44 ,  B01J27/053 ,  B01J29/18

CPC classification number: C07C253/30 ,  B01J21/08 ,  B01J21/10 ,  B01J23/06 ,  B01J23/10 ,  B01J23/20 ,  B01J23/26 ,  B01J23/30 ,  B01J23/44 ,  B01J27/053 ,  B01J29/18 ,  C07C255/07

Abstract: Disclosed is a process for isomerizing cis-2-pentenenitrile to 3-pentenenitrile in the presence of a non-aluminum metal oxide catalyst, wherein: (a) the metal in the catalyst has an oxidation state in the range from +1 to +4; (b) the metal has a cation radius in the range from 0.35 to 1.0 Å; (c) the metal of the catalyst has a polarizing power, C/r, is in the range from 2 to >8, wherein C is the charge of the metal and r is the ionic radius in Å; (d) the bond network of the catalyst has a % ionicity of >20; (e) the metal oxide has an acidity strength in the range from strong to very weak; and (f) the metal oxide has a basicity (nucleophilicity) strength of weak to strong.

Abstract translation: 公开了一种在非铝金属氧化物催化剂存在下将顺式-2-戊烯腈异构化为3-戊烯腈的方法，其中：（a）催化剂中的金属的氧化态为+1至+4 ; （b）金属的阳离子半径在0.35至1.0的范围内; （c）催化剂的金属具有极化功率，C / r在2至> 8的范围内，其中C是金属的电荷，r是的离子半径; （d）催化剂的键合网络具有> 20的％离子性; （e）金属氧化物的酸度强度在强到非常弱的范围内; 和（f）金属氧化物具有弱至强的碱性（亲核性）强度。

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。

公开(公告)号：US09676800B2

公开(公告)日：2017-06-13

申请号：US14962095

申请日：2015-12-08

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

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

IPC: B01J38/56 ,  C07F9/48 ,  B01J31/40 ,  B01J31/18 ,  B01D11/04 ,  B01D11/00

CPC classification number: C07F9/4841 ,  B01D11/0426 ,  B01D11/0434 ,  B01D11/0488 ,  B01D11/0492 ,  B01D2011/002 ,  B01J31/1865 ,  B01J31/4053 ,  B01J38/56 ,  B01J2231/343 ,  B01J2531/847 ,  Y02P20/582 ,  Y02P20/584

Abstract: Disclosed herein are methods for recovering diphosphonite-containing compounds from mixtures comprising organic mononitriles and organic dinitriles, using multistage countercurrent liquid-liquid extraction. Recovery is enhanced with one or more method steps. In a first step, a portion of the heavy phase from the settling section of the first stage is recycled to the settling section of the first stage. In a second step, a portion of the light phase from the settling section of the first stage is recycled to the mixing section of the first stage. In a third step, the first stage takes place in a mixer-settler, a Lewis base is introduced into the settling section of the first stage, and a complex of Lewis acid and Lewis base is formed in this settling section. In a fourth step, a polyamine is added to the first stage.

公开(公告)号：US09388204B2

公开(公告)日：2016-07-12

申请号：US14367156

申请日：2012-11-20

Applicant: INVISTA North America S.a r.l.

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

IPC: C07F9/145 ,  C07F9/141 ,  C07F9/6574 ,  B01D11/04 ,  B01J31/40 ,  B01J31/18

CPC classification number: C07F9/65746 ,  B01D11/0426 ,  B01D11/0457 ,  B01J31/185 ,  B01J31/4053 ,  B01J2531/847 ,  C07F9/141 ,  C07F9/145 ,  Y02P20/582 ,  Y02P20/584

Abstract: Disclosed herein are methods for recovering diphosphite-containing compounds from mixtures comprising organic mononitriles and organic dinitriles, using liquid-liquid extraction. Also disclosed are treatments to enhance extractability of the diphosphite-containing compounds.