| 发明名称 |
PREPARATION OF PHTHALIC ANHYDRIDE FROM O-XYLENE |
| 摘要 |
Phthalic anhydride is prepared in a multiple tube reactor provided with separate salt baths, the temperature of the salt bath used for cooling the first layer of catalyst, as regarded in the direction of flow of the reaction mixture, being from 2 DEG to 20 DEG C. higher than that of the salt bath(s) associated with the following layer(s).
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| 申请公布号 |
US5225574(A) |
申请公布日期 |
1993.07.06 |
| 申请号 |
US19910682295 |
申请日期 |
1991.04.09 |
| 申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
AICHINGER, HEINRICH;RUPPEL, WILHELM;SEUBERT, ROLF;BOEHNING, KARL-HEINZ;SCHEIDMEIR, WALTER;SCHMIDT, JOHANNES E.;SCHWARZMANN, MATTHIAS |
| 分类号 |
B01J23/18;B01J23/22;B01J27/198;C07B61/00;C07C51/265;C07D307/89 |
主分类号 |
B01J23/18 |
| 代理机构 |
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