发明名称 |
PRODUCTION OF UNSATURATED CARBOXYLIC ACID (ESTER) |
摘要 |
PROBLEM TO BE SOLVED: To obtain an unsaturated carboxylic acid (ester) causing little environmental pollution. SOLUTION: This unsaturated carboxylic acid (ester) is obtained by the three steps composed of amidation step: (meth)acrylonitrile is catalytically hydrated in the presence of a solid catalyst to synthesize (meth)acrylamide; hydrolysis step: the (meth)acrylamide is hydrolyzed in the presence of basic catalyst to synthesize a (meth)acrylic acid salt and ammonia; and electrodialysis step: the (meth)acrylic acid salt is decomposed into (meth)acrylic acid and a base as catalyst by electrodialysis. |
申请公布号 |
JPH0959212(A) |
申请公布日期 |
1997.03.04 |
申请号 |
JP19950209401 |
申请日期 |
1995.08.17 |
申请人 |
DAICEL CHEM IND LTD |
发明人 |
MATSUOKA KAZUYUKI |
分类号 |
B01D61/44;B01J23/02;B01J23/88;B01J25/00;C07B61/00;C07C57/04;C07C67/20;C07C69/54 |
主分类号 |
B01D61/44 |
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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