| 发明名称 |
PROCESS FOR THE PREPARATION OF SUBSTANTIALLY NAPHTHOQUINONE-FREE PHTHALIC ANHYDRIDE FROM NAPHTHALENE |
| 摘要 |
In the catalytic oxidation by air of naphthalene to phthalic as a by-product anhydride, considerable amounts of naphthoquinone are formed as a by-product. The formation of this undesirable by-product can be avoided according to the invention by using a naphthalene which is substantially free from alkali. |
| 申请公布号 |
ZA9204035(B) |
申请公布日期 |
1993.02.24 |
| 申请号 |
ZA19920004035 |
申请日期 |
1992.06.03 |
| 申请人 |
HUELS AKTIENGESELLSCHAFT |
发明人 |
MANFRED ZUR HAUSEN;KARL KIRSTE;WILFRIED KRIX |
| 分类号 |
B01J21/06;B01J23/22;C07B61/00;C07C51/265;C07C51/31;C07D307/89 |
主分类号 |
B01J21/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
