| 气相方法合成阻燃剂二溴新戊二醇 |
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| 引用本文： | 李秀瑜.气相方法合成阻燃剂二溴新戊二醇[J].河北师范大学学报(自然科学版),1998,22(3):367-371. |
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| 作者姓名： | 李秀瑜 |
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| 作者单位： | 河北师范大学实验中心!050016，石家庄 |
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| 摘 要： | 讨论气体ＨＢｒ与季戊四醇反应制备二溴新戊二醇的气相合成方法中催化剂、加料速度、反应时间等因素对产率的影响，并给出了适宜的反应条件；
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| 关 键 词： | 季戊四醇 二溴新戊二醇 阻燃剂 气相 HBrf |
Preparation of Flame Retardant Dibromoneopentyl Glycol by Gaseous HBr |
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| Li Xiuyu, Wu Yang.Preparation of Flame Retardant Dibromoneopentyl Glycol by Gaseous HBr[J].Journal of Hebei Normal University,1998,22(3):367-371. |
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| Authors: | Li Xiuyu Wu Yang |
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| Abstract: | The effects of catalyst,rate of feed and reaction time as well as other influence factors in the process of preparing dibromoneopentyl glycol(DBNPG) by brominating pentaerythritol with gaseous HBr in the presence of an inert solvent wore discussed,and give the proper conditions: Using a kind of monoacids between 2~10 carbonatoms as catalyst at the amount of 2. 1 %~3. 3% based upon pentaerythritol weight,therate of feed is about 3: 1--4: 1,the time for draining water off condensate about 1. 53. 0 h and the total reation time about 7--13 h. Thus,the yield of DBNPG is 80% uponpentaerythritol weight. |
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| Keywords: | gaseous-HBr pentaerythritol preparation dibromoneopentyl glycol(DBNPG) |
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