公开(公告)号：US20160289383A1

公开(公告)日：2016-10-06

申请号：US15037633

申请日：2014-11-20

Applicant: INVISTA TECHNOLOGIES S.À R.L.

Inventor： Ernest Keith MARCHILDON ,  Karen A. SURGENOR ,  Bryan D. KAUSHIVA

IPC: C08G69/28

CPC classification number: C08G69/28 ,  B01J4/002 ,  B01J10/002 ,  B01J14/00 ,  B01J19/0006 ,  B01J19/006 ,  B01J19/0066 ,  B01J19/18 ,  B01J19/245 ,  B01J2219/00186 ,  B01J2219/002 ,  B01J2219/00202 ,  B01J2219/00231 ,  C08L77/00

Abstract: A continuous process for the manufacture of a polyamide, the process comprising the steps of: (i) flowing a stream A comprising a molten dicarboxylic acid, or a molten dicarboxylic acid-rich mixture comprising a dicarboxylic acid and a diamine, through a first stage and at least one more reaction stage of a vertical multistage reactor, wherein the first stage is at the top of the reactor; (ii) counter-currently flowing a stream B comprising a diamine as either a vapour or a diamine-rich liquid through at least one of the stages below the first reaction stage of said vertical multistage reactor; (iii) accumulating a liquid phase material P comprising polyamide at and/or below the final stage of said reactor; wherein said reactor is equipped with internal features suitable for effecting contact between counter-currently flowing streams A and B; and wherein said process further comprises the step of agitating said liquid phase material P by injecting a gaseous stream C comprising steam, or at least one inert gas, or a mixture of steam and at least one inert gas into the reactor at or below the final stage of the reactor. The invention further provides a vertical multistage reactor configured to implement said process.

Abstract translation: 一种用于制造聚酰胺的连续方法，该方法包括以下步骤：（i）使包含二羧酸和二胺的熔融二羧酸或熔融二羧酸富混合物的流A通过第一阶段 以及垂直多级反应器的至少一个反应阶段，其中第一级位于反应器的顶部; （ii）将包含二胺的流B逆流地流过位于所述垂直多级反应器的第一反应级之下的至少一个级的蒸气或二胺富液体; （iii）在所述反应器的最后阶段和/或之下积聚包含聚酰胺的液相材料P; 其中所述反应器配备有适于实现逆向流动流A和B之间的接触的内部特征; 并且其中所述方法还包括通过将包含蒸汽或至少一种惰性气体或蒸汽与至少一种惰性气体的混合物的气流C注入到反应器中或之下而最终搅拌所述液相材料P的步骤 反应堆的阶段。 本发明还提供了一种被配置为实现所述过程的立式多级反应器。