发明名称 |
Process for producing methacrylic ester. |
摘要 |
<p>A process for producing a methacrylic ester which comprises catalytically oxidizing isobutylene, tert-butanol, methacrolein or isobutyl aldehyde in a vapor phase; removing light-boiling substances from the resulting reaction product by distillation or stripping; extracting methacrylic acid from the resulting methacrylic acid aqueous solution using a saturated chain aliphatic hydrocarbon having 6 to 9 carbon atoms as a solvent; recovering the solvent from the obtained solvent solution of methacrylic acid; esterifying the resulting methacrylic acid by the reaction of it with a lower aliphatic alcohol or a lower alicyclic alcohol having 1 to 12 carbon atoms using a porous strongly acidic cation exchange resin as a catalyst for esterification; and then subjecting the thus obtained esterification reaction product to a purification step.</p> |
申请公布号 |
EP0289178(A1) |
申请公布日期 |
1988.11.02 |
申请号 |
EP19880303431 |
申请日期 |
1988.04.15 |
申请人 |
NIPPON CATALYTIC CHEM IND |
发明人 |
UEOKA, MASATOSHI;MATSUMOTO, SYOICHI;YOSHIDA, HIROSHI;BABA, MASAO |
分类号 |
C07C51/23;C07C51/235;C07C51/25;C07C67/08;(IPC1-7):C07C69/54 |
主分类号 |
C07C51/23 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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