发明名称 |
ENDO-METHYLENE HEXAHYDROPHTHALIC ANHYDRIDE AND PRODUCTION METHOD THEREOF |
摘要 |
<p>The present invention belongs to the field of organic chemical synthesis, and discloses hexahydro-3,6-methanophthalic anhydride and a method of producing the same. The method uses maleic anhydride and mixed C 5 s as raw materials, generates Nadic anhydride by absorbing cyclopentadiene with maleic anhydride directly at a temperature of 0-5°C, and crystallizes to obtain a pure product; and a Cu-Ni/ZnO-ZrO 2 or Co-Ni/ZnO-ZrO 2 catalyst is added to the generated Nadic anhydride, carrying out a catalytic hydrogenation reaction in a high-pressure autoclave for 4-6 hours at a temperature of 100-140°C and under a hydrogen pressure of 1-4 MPa, the catalyst is filtered after cooling, and reduced pressure distilling to obtain the hexahydro-3,6-methanophthalic anhydride. Compared with the prior art, the present invention prepares the Nadic anhydride by using mixed C 5 s, an inexpensive by-product of ethylene, as a raw material, and further synthesizes hexahydro-3,6-methanophthalic anhydride while obtaining a chemical raw material de-cyclized C 5 s at the same time, enhances the in-depth processing of mixed C 5 s, and can be used widely in industrial production.</p> |
申请公布号 |
EP2495241(A1) |
申请公布日期 |
2012.09.05 |
申请号 |
EP20100825966 |
申请日期 |
2010.04.10 |
申请人 |
PUYANG HUICHENG CHEMICALS CO., LTD |
发明人 |
YANG, ZHENQIANG;ZHANG, HAIYANG;LV, HAIKUAN;CHEN, SHUMIN;HAN, ZHAOHAI;ZHANG, PENGKE;CUI, FUMIN;WANG, ZHONGFENG;YANG, RUINA;WANG, GUOQING;WANG, TIANZE;LIU, FAGUI |
分类号 |
C07D307/93;B01J23/80 |
主分类号 |
C07D307/93 |
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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