[EN] A PROCESS FOR THE PRODUCTION OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACID ESTERS AND A CATALYST THEREFOR<br/>[FR] PROCÉDÉ DE PRODUCTION D'ESTERS D'ACIDE CARBOXYLIQUE ÉTHYLÉNIQUEMENT INSATURÉS ET CATALYSEUR ASSOCIÉ
申请人:LUCITE INT UK LTD
公开号:WO2018069702A1
公开(公告)日:2018-04-19
A process for the production of an ethylenically unsaturated carboxylic acid ester, preferably an α,ß ethylenically unsaturated carboxylic acid ester is described. The process takes place by the reaction of formaldehyde or a suitable source thereof with a carboxylic acid ester in the presence of a basic metal methyl carbonate co-reactant, wherein the process produces a second basic metal salt and wherein the process includes the step of contacting the second basic metal salt with: a)carbon dioxide (CO2) and optionally, methanol, and/or b)dimethyl carbonate, to regenerate the basic metal methyl carbonate co-reactant. The invention includes use of carbon dioxide and/or dimethyl carbonate to regenerate a basic metal methyl carbonate.
本发明涉及一种生产
乙烯基不饱和
羧酸酯的方法,优选为α,β
乙烯基不饱和
羧酸酯。该方法通过在碱性
金属甲基
碳酸盐协同反应剂的存在下,将
甲醛或其适宜来源与
羧酸酯反应,从而产生第二种碱性
金属盐,并包括以下步骤:将第二种碱性
金属盐与a)
二氧化碳(
CO2)和可选的
甲醇和/或b)
碳酸二甲酯接触,以再生碱性
金属甲基
碳酸盐协同反应剂。本发明包括使用
二氧化碳和/或
碳酸二甲酯再生碱性
金属甲基
碳酸盐。