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    • 54. 发明公开
    • 메틸 메타크릴레이트의 제조 방법
    • 甲基丙烯酸甲酯的制备方法
    • KR1020020084899A
    • 2002-11-13
    • KR1020020018285
    • 2002-04-03
    • 스미또모 가가꾸 가부시끼가이샤
    • 이노우에고바바가쯔오모리또다까유끼
    • C07C69/54
    • C07C29/00C07C67/39Y02P20/582C07C31/04C07C69/54
    • PURPOSE: A method for preparing methyl methacrylate and its apparatus are provided, to enable the methanol even if it is recovered from the process other than the methyl methacrylate production process to be reused to the production of methyl methacrylate, thereby using methanol effectively. CONSTITUTION: The method comprises the steps of degrading methyl t-butyl ether to prepare isobutylene and methanol; oxidizing the isobutylene to obtain at least one compound selected from methacrylic acid and methacrolein; and esterifying the compound selected from methacrylic acid and methacrolein with methanol to prepare methyl methacrylate. Preferably isobutylene is separated from the reaction mixture before it is oxidized; and the methanol is recovered from the remaining mixture after separating isobutylene, before esterification. Preferably the recovered methanol comprises 95 wt% of methanol, and at least one compound selected from t-butyl alcohol, water and methyl t-butyl ether.
    • 目的:提供一种制备甲基丙烯酸甲酯及其装置的方法,即使从甲基丙烯酸甲酯生产方法以外的方法中回收甲醇也可以重新用于生产甲基丙烯酸甲酯,从而有效地使用甲醇。 构成:该方法包括降解甲基叔丁基醚制备异丁烯和甲醇的步骤; 氧化异丁烯以获得至少一种选自甲基丙烯酸和甲基丙烯醛的化合物; 并用甲醇酯化选自甲基丙烯酸和甲基丙烯醛的化合物,制备甲基丙烯酸甲酯。 优选异丁烯在氧化之前与反应混合物分离; 在分离异丁烯之后,在酯化之前从剩余的混合物中回收甲醇。 优选地,回收的甲醇包含95重量%的甲醇和至少一种选自叔丁醇,水和甲基叔丁基醚的化合物。