| 发明名称 |
METHOD OF SEPARATING NAPHTHOQUINONE FROM PHTHALIC ACID ANHYDRIDE |
| 摘要 |
<p>A method for removing naphthoquinone from phthalic anhydride produced by air-oxidation of naphthalene or naphthalene-containing mixtures, which entails mixing an effective amount of l,5,9-cyclododecatriene or a distillation residue of the same or a mixture thereof with the naphthoquinone-containing phthalic anhydride at an elevated temperature.</p> |
| 申请公布号 |
CA1232281(A) |
申请公布日期 |
1988.02.02 |
| 申请号 |
CA19850497515 |
申请日期 |
1985.12.12 |
| 申请人 |
HULS AKTIENGESELLSCHAFT |
发明人 |
GUDE, FRITZ;SCHARF, HELMUT |
| 分类号 |
C07D307/89;C07C51/573;(IPC1-7):C07D307/89 |
主分类号 |
C07D307/89 |
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