摘要
四溴双酚A是一种优良的溴系阻燃剂。以氯苯为溶剂,液溴/双氧水为溴化剂,采用釜式连续法合成了标题化合物。初步研究表明,较为适宜的工艺条件为：投料比n（双酚A）∶n（溴素）∶n（双氧水）=1∶2.1∶2.1,反应温度60℃,平均停留时间40 min,四溴双酚A的单程收率为85.4%,m.p.179.8-181.8℃。在此条件下套用溶剂,四溴双酚A的收率在95.0%以上,m.p.178.9-181.5℃。
Tetrabromobisphenol A is an excellent flame retardant.In this paper tetrabromobisphenol A was synthesized in a continuously stirred tank reactor using chlorobenzene as the solvent and bromine/hydrogen peroxide as brominating reagents.The experimental results indicated that the proper synthesis conditions were as follows：The molecular ratio of bisphenol A,bromine and hydrogen peroxide was 1∶2.1∶2.1,the reaction temperature was 60 ℃,the reaction time was 40 min,the once-through yield of tetrabromobisphenol A was 85.4%（based on weight of bisphenol A） and the melting point of the target compound was between 179.8 ℃ and 181.8 ℃.Upon recycling the solvent under the above-mentioned optimum conditions the yield of tetrabromobisphenol A was above 95.0%（based on weight of bisphenol A） with its melting point being in the range of between 178.9 ℃ and 181.5 ℃.
出处
《化学试剂》
CAS
CSCD
北大核心
2010年第6期567-569,共3页
Chemical Reagents
关键词
四溴双酚A
双酚A
阻燃剂
合成
连续法
tetrabromobisphenol A
bisphenol A
flame retardant
synthesis
continuous method for synthesis
