专利检索 ap:("Ciba Holding Inc.") AND inv:"THOMPSON, Thomas, Friend" 第 1 页

1.

发明授权
DERIVATIVES OF 1-OXYL-4-HYDROXY-2,2,6,6-TETRAMETHYLPIPERIDINE AS POLYMERIZATION INHIBITORS FOR (METH) ACRYLATE MONOMERS 失效
标题翻译： 1-氧基-4-羟基-2,2,6,6-四甲基哌衍生物作为聚合抑制剂用于（甲基）丙烯酸

公开(公告)号：EP1095006B1

公开(公告)日：2008-12-24

申请号：EP98936423.7

申请日：1998-07-14

申请人： Ciba Holding Inc.

发明人： CUNKLE, Glen, Thomas , GANDE, Matthew, Edward , SELTZER, Raymond , THOMPSON, Thomas, Friend

IPC分类号： C07C51/50 , C07C57/04 , C07C69/54 , C07C67/62 , C07C69/15 , C07C231/22 , C07C233/09 , C07C253/32 , C07C255/08 , C07B63/04 , C07D211/94

CPC分类号： C07C231/22 , C07B63/04 , C07C51/50 , C07C67/62 , C07C253/32 , C07C303/42 , C07D211/94 , C07C57/04 , C07C69/54 , C07C69/01 , C07C309/24 , C07C255/08 , C07C233/09 , C07C69/15

摘要： Selected derivatives of 1-oxyl-2,2,6,6-tetramethyl-4-hydroxypiperidine and 1-oxyl-2,2,6,6-tetramethyl-4-aminopiperidine are surprisingly effective as inhibitors to prevent the premature polymerization of acrylic and methacrylic acids, their esters, their amides, vinyl acetate and acrylonitrile in the presence of water. Some of these derivatives are new compounds.