发明名称 |
Process for 4-chlorobenzotrichloride |
摘要 |
4-chlorobenzotrichloride was prepared by the chlorination of p-xylene in the vapor phase at a temperature above about 200 DEG C. in the presence of an activated carbon catalyst and water. An approximately 75 percent calculated yield was obtained at 250 DEG C. using a wide-pore activated carbon catalyst.
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申请公布号 |
US5157173(A) |
申请公布日期 |
1992.10.20 |
申请号 |
US19910764660 |
申请日期 |
1991.09.24 |
申请人 |
DOWELANCO |
发明人 |
DESJARDIN, MICHAEL A.;ALLPHIN, CLARK P. |
分类号 |
B01J21/18;C07B61/00;C07C17/00;C07C17/14;C07C17/361;C07C25/02 |
主分类号 |
B01J21/18 |
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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