发明名称 |
Process for the purification and preparation of acrylic acid or methacrylic acid |
摘要 |
Acrylic acid or methacrylic acid is purified by crystallization to obtain crystals and a mother liquor, by a process in which the crystals are washed with a wash liquid containing the acid and having a temperature from 15 to 40° C. Furthermore, a process for the preparation of acrylic acid or methacrylic acid comprises the abovementioned purification process.
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申请公布号 |
US2004049077(A1) |
申请公布日期 |
2004.03.11 |
申请号 |
US20030656203 |
申请日期 |
2003.09.08 |
申请人 |
BASF AKIENGESELLSCHAFT |
发明人 |
ECK BERND;HEILEK JOERG;BAUMANN DIETER;SCHLIEPHAKE VOLKER |
分类号 |
C07C51/64;C07C51/25;C07C51/43;C07C51/47;C07C57/05;C07C57/07;(IPC1-7):C07C51/42 |
主分类号 |
C07C51/64 |
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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