公开(公告)号：US3974207A

公开(公告)日：1976-08-10

申请号：US486904

申请日：1974-07-09

申请人： Wieslaw Szelejewski ,  Edward Grzywa ,  Jerzy Wojciechowski ,  Kazimerz Fraczek ,  Zdzislaw Maciejewski ,  Boleslaw Kot

发明人： Wieslaw Szelejewski ,  Edward Grzywa ,  Jerzy Wojciechowski ,  Kazimerz Fraczek ,  Zdzislaw Maciejewski ,  Boleslaw Kot

IPC分类号： C07C69/54 ,  B01J31/00 ,  C07B61/00 ,  C07C51/235 ,  C07C67/08 ,  C07C67/327 ,  C07C69/675 ,  C07C67/30

CPC分类号： C07C51/235 ,  C07C67/08 ,  C07C67/327 ,  Y10S261/72

摘要： This invention relates to a method for producing methacrylic esters from by-products, derived from aldehydes in the Oxo process.Other esters of methacrylic acid as exemplified by ethyl, propyl and butyl methacrylates can also be obtained.Isobutyrdehyde is oxidized with oxygen or oxygen-containing gas to isobutyric acid which is then esterified with a C.sub.1 -C.sub.4 aliphatic alcohol and the resulting isobutyric ester is then oxidized in liquid phase with oxygen or oxygen-containing gas to form a hydroxy isobutyric ester derivative which is then subjected to dehydration.

摘要翻译： 本发明涉及从Oxo方法中衍生自醛的副产物生产甲基丙烯酸酯的方法。