公开(公告)号：US20160068632A1

公开(公告)日：2016-03-10

申请号：US14786649

申请日：2014-04-15

Applicant: INVISTA TECHNOLOGIES S.À. R.L.

Inventor： Robert J. WELCH

IPC: C08G69/28

CPC classification number: C08G69/28 ,  C07C51/412 ,  C07C209/68 ,  Y02P20/582 ,  C07C55/02 ,  C07C55/14 ,  C07C211/12

Abstract: A continuous process for producing a nylon salt solution prepared using a liquid partially balanced acid solution enriched in dicarboxylic acid, and in particular adipic acid. The liquid feed is prepared by metering dicarboxylic acid powder, based on weight, from a loss-in-weight feeder to a feeding conduit that transfers the dicarboxylic acid powder into an in-line disperser; feeding a first feed stream of diamine to the in-line disperser to form a dispersion comprising between 32 wt. % and 46 wt. % dicarboxylic acid, between 11 wt. % and 15 wt. % diamine, and between 39 wt. % and 57 wt. % water, and heating the dispersion at temperature between 50 C and 60 C to form a partially balanced acid solution. A nylon salt solution is prepared from the liquid partially balanced acid solution and continuously withdrawn into a storage tank. The nylon salt solution has a uniform pH and is suitable for producing nylon polymers.

Abstract translation: 制备使用富含二羧酸，特别是己二酸的液体部分平衡的酸溶液制备的尼龙盐溶液的连续方法。 液体进料通过将二羧酸粉末基于重量从重量损失进料器计量到将二羧酸粉末转移到在线分散器中的进料管道来制备; 将二胺的第一进料流供给到在线分散器中以形成包含32重量％ ％和46wt。 ％二羧酸，11重量％ ％和15wt。 ％二胺，和39重量％ ％和57wt。 ％水，并在50℃和60℃之间的温度下加热分散体以形成部分平衡的酸溶液。 从液体部分平衡的酸溶液制备尼龙盐溶液，并连续地取出到储罐中。 尼龙盐溶液具有均匀的pH，适用于生产尼龙聚合物。

公开(公告)号：US20160060460A1

公开(公告)日：2016-03-03

申请号：US14786651

申请日：2014-04-15

Applicant: INVISTA TECHNOLOGIES S.À. R.L.

Inventor： Robert J. WELCH

IPC: C08L77/06 ,  G01N27/416 ,  G01N33/44

CPC classification number: C08L77/06 ,  C07C51/412 ,  C08G69/28 ,  G01N27/4167 ,  G01N33/442 ,  Y02P20/582 ,  C07C55/14 ,  C07C55/02

Abstract: A process for producing a partially balanced acid solution that involves metering dicarboxylic acid powder, based on weight, from a loss-in-weight feeder to a feeding conduit that transfers the dicarboxylic acid powder at a low variability feed rate into an in-line disperser, adding a first feed stream of diamine to the in-line disperser in an amount sufficient to form the partially balanced acid solution having a solids content of less than 60%, and storing the partially balanced acid solution at a temperature to maintain the dissolved dicarboxylic acid and to prevent formation of a slurry. The partially balanced acid solution may be used as a feed solution to prepare a nylon salt solution. Process controls for the process are also disclosed.

Abstract translation: 一种制备部分平衡的酸溶液的方法，其涉及将二羧酸粉末以重量计从重量损失进料器计量到以低变异性进料速率将二羧酸粉末转移到在线分散器中的进料管道 将二胺的第一进料流以足以形成固体含量小于60％的部分平衡的酸溶液的量向在线分散器中加入，并将部分平衡的酸溶液储存在保持溶解的二羧酸的温度 酸，并防止淤浆的形成。 部分平衡的酸溶液可以用作进料溶液以制备尼龙盐溶液。 还公开了该方法的过程控制。