发明名称 |
Continuous preparation of alkyl esters of (meth)acrylic acid |
摘要 |
In the process for the continuous preparation of alkyl esters of (meth)acrylic acid by reacting (meth)acrylic acid with monohydric alkanols having from 1 to 8 carbon atoms in the presence of an acid esterification catalyst in a reaction zone, there is discharged from the reaction zone a product mixture which comprises the alkyl (meth)acrylate formed, the catalyst and the by-products formed during the course of the esterification having boiling points higher than that of the alkyl (meth)acrylate, and from which the alkyl (meth)acrylate is separated by distillation in a separation zone. The product mixture discharged from the reaction zone is fed to a rectification unit (I), in this unit the product mixture discharged is separated by rectification into at least one product (I) comprising the alkyl ester of (meth)acrylic acid and a product (II) comprising the catalyst, the product (I) is fed to a further rectification unit (II) and in this the alkyl ester of (meth)acrylic acid is separated off by rectification.
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申请公布号 |
US5883288(A) |
申请公布日期 |
1999.03.16 |
申请号 |
US19970791052 |
申请日期 |
1997.01.28 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
IFFLAND, GABRIELE;DAMS, ALBRECHT;WECK, ALEXANDER;AICHINGER, HEINRICH;HERBST, HOLGER;NESTLER, GERHARD;EXNER, HERBERT;SCHMIDT, WILLI;GEISENDOERFER, MATTHIAS;DOCKNER, TONI |
分类号 |
B01J27/02;B01J31/02;C07B61/00;C07C67/08;C07C67/54;C07C69/54;(IPC1-7):C07C69/52 |
主分类号 |
B01J27/02 |
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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