Aminoalkyl (meth)acrylate stabilization

• Main Authors: CABON YVES, DEFER PATRICE, BELLINI CLEMENT
• Format: Patent
• Language: Chinese; English
• Published: 11.05.2021
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ADHESIVES; APPARATUS THEREFOR; CHEMISTRY; DYES; GENERAL METHODS OF ORGANIC CHEMISTRY; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC CHEMISTRY; PAINTS; POLISHES

The invention relates to the use of a stabilizing compound comprising at least one N-oxyl compound and at least one polymerisation inhibitor other than an N-oxyl compound, for inhibiting transesterification catalyst degradation in a process for the synthesis of aminoalkyl (meth)acrylates. Preferably, the transesterification catalyst is a titanium organometallic compound and the stabilizing composition comprises at least one N-oxyl derivative and at least one polymerisation inhibitor chosen from phenolic compounds and phenothiazine compounds in a weight ratio of between 1 and 10, preferably between 4 and 10, limits inclusive. 本发明涉及稳定化复合物用于在合成(甲基)丙烯酸氨基烷基酯的方法中抑制酯交换催化剂降解的用途，所述稳定化复合物包含至少一种N-氧基化合物和至少一种不同于N-氧基化合物的聚合抑制剂。优选地，所述酯交换催化剂是钛有机金属化合物并且稳定化组合物包含重量比例在1和10之间、优选在4和10之间的至少一种N-氧基衍生物和至少一种聚合抑制剂，所述聚合抑制剂选自酚类化合物和吩噻嗪化合物，所述重量比例包括端点。