公开(公告)号：US20130178652A1

公开(公告)日：2013-07-11

申请号：US13781834

申请日：2013-03-01

Applicant: Arkema Inc.

Inventor： Olan S. Fruchey ,  Christopher T. Reeves ,  William C. Brooks ,  Edmund J. Yang ,  Roger L. Roundy

IPC: C07C51/38

CPC classification number: C09K15/30 ,  C07C51/38 ,  C07C51/50 ,  C07C67/62 ,  C08F2/40 ,  C07C57/04 ,  C07C69/54

Abstract: The method of inhibiting the polymerization of a mono-ethylenically unsaturated carboxylic acid, anhydride, ester or neutralized or partially neutralized salt, e.g., an acrylic acid or ester, in an aqueous solution and in the presence of oxygen, the method comprising the step of mixing with the aqueous solution an inhibitor comprising (i) at least 50 ppm of an N-oxyl compound, e.g., 4-hydroxy-TEMPO, and (ii) a manganese ion, the N-oxyl compound and manganese ion present in a N-oxyl compound to manganese ion weight ratio of 50:1 to less than 100:1. based on the mono-ethylenically unsaturated carboxylic acid, anhydride, ester or salt.

Abstract translation: 在水溶液中和在氧气存在下抑制单烯属不饱和羧酸，酸酐，酯或中和或部分中和的盐例如丙烯酸或酯的聚合的方法包括以下步骤： 与水溶液混合，包含（i）至少50ppm的N-氧基化合物，例如4-羟基-TEMPO，和（ii）锰离子，N-氧基化合物和锰离子存在于N 氧化合物与锰离子的重量比为50:1至小于100:1。 基于单烯键式不饱和羧酸，酸酐，酯或盐。