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    • 35. 发明授权
    • 메타크릴산 에스테르의 제조방법
    • 制备甲基丙烯酸酯的方法
    • KR1019940001849B1
    • 1994-03-09
    • KR1019910007017
    • 1991-05-01
    • 한국화학연구원
    • 백행남이정호한요한
    • C07C69/54
    • The method producing methyl metacrylate or ethyl metacrylate continuosly and recovering non-reaction metacrylic acid and alcohols. Metacrylic acid is synthesized by gas-phase catalytic oxidizing at least one compound of isobutylene, t-butanol and metacrolein. In manufacturing metacrylic acid ester with metacrylic acid, alcohol and solid-acid catalyst, the reaction temp is 60-130 deg.C, and pressure is 0-30 psig. A fluidized bed catalyst reactor is used for continuous production. Mixing solvents selected from aromatics such as ethylbenzene, xylene and cumene and from aliphatic such as nonane, decane, decaline and tetraline are used as esterification solvent. The above solid-acid catalyst are porous polystyrene base cation exchange resin and fluorine base cation exchange resin.
    • 连续制造甲基丙烯酸甲酯或甲基丙烯酸乙酯的方法,回收非反应的甲基丙烯酸和醇。 甲基丙烯酸通过气相催化氧化至少一种异丁烯,叔丁醇和甲基丙烯醛化合物合成。 在用甲基丙烯酸,醇和固体酸催化剂制备甲基丙烯酸酯时,反应温度为60-130℃,压力为0-30psig。 流化床催化反应器用于连续生产。 作为酯化溶剂,使用选自芳族化合物如乙苯,二甲苯和枯烯的混合溶剂和来自脂肪族如壬烷,癸烷,十氢萘和四氢萘的混合溶剂。 上述固体酸催化剂是多孔聚苯乙烯基阳离子交换树脂和氟碱阳离子交换树脂。