| 利用废感光胶片合成DOTP的工艺研究 |
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| 引用本文： | 张荣华,吴华峰.利用废感光胶片合成DOTP的工艺研究[J].应用化工,2005,34(5):311-312. |
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| 作者姓名： | 张荣华 吴华峰 |
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| 作者单位： | 同济大学,化学系,上海,200092 |
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| 摘 要： | 利用废感光胶片回收得到对苯二甲酸二(2 乙基己)酯(DOTP)。在单丁基氧化锡催化作用下,将废感光胶片在170～220℃降解,最佳温度为190℃,然后与2 乙基己醇反应置换出乙二醇,并不断蒸出乙二醇,蒸出过量2 乙基己醇后可得到DOTP,所得产品的酯含量达99%,当单丁基氧化锡催化剂用量为0.25%,2 乙基己醇与废感光胶片的摩尔配比为3.0时,DOTP的回收率可达90%。
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| 关 键 词： | 感光胶片 降解 对苯二甲酸二(2-乙基己)酯 |
| 文章编号： | 1671-3206(2005)05-0311-02 |
| 修稿时间： | 2005年2月28日 |
Study on production of dioctyl terephthalate from waste sensitive film |
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| ZHANG Rong-hua,WU Hua-feng.Study on production of dioctyl terephthalate from waste sensitive film[J].Applied chemical industry,2005,34(5):311-312. |
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| Authors: | ZHANG Rong-hua WU Hua-feng |
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| Abstract: | Waste sensitive film was used for manufacturing dioctyl terephthalate by recycling. Dioctyl terephthalate (DOTP) was manufactured by degradative transesterification of waste sensitive film with excess 2-ethylhexanol in the presence of mono-n-butyltin oxide at 170～220℃, preferably at 190℃,glycol was substituted after reacted with 2-ethylhexanol and distilling off the glycol, then distilling off excess 2-ethylhexanol. The product contains DOTP more than 99%. The yield of DOTP is more than 90%, when mole ratio of 2-ethylhexanol to waste sensitive film is 3∶1; the amount of catalysts is (0.25%.) |
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| Keywords: | sensitive film degradation dioctyl terephthalate |
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