3,3′-亚甲基-双(6-羟基苯甲酸)的合成  

Synthesis of 3,3′-Methylene-bis[6-hydroxybenzoic acid]

作　　者：李祖光[1] 赵武利[1] 赵晓涛[1] 高建荣[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,浙江杭州310032

出　　处：《浙江工业大学学报》2013年第1期10-12,共3页Journal of Zhejiang University of Technology

基　　金：浙江省科技厅钱江人才基金资助项目(2010R10044);浙江省2011年度留学人员科技活动择优资助项目(2011443)

摘　　要：以水杨酸和37%甲醛溶液为原料、25%磷酸为催化剂合成光稳定剂3,3′-亚甲基-双(6-羟基苯甲酸),分别研究了原料配比、温度、反应时间等对合成反应的影响,并确定了最佳工艺条件.该合成方法的适宜合成工艺参数为:n(水杨酸)∶n(甲醛)=1∶0.58,合成反应温度为98℃,反应时间为9h.所得产物经红外光谱和核磁氢谱等表征确认了其结构,产品收率可达到89.4%以上,产品纯度97.6%.The 3,3r-Methylene-bis E6-hydroxybenzoic acid], a light stabilizer, was synthesized from salicylic acid and 37% formaldehyde solution, 25% phosphoric acid as catalyst. The effects of materials ratio, temperature, reaction time on the synthesis were studied. The proper technological conditions were given as follows：the molar ratio of salicylic acid and formaldehyde was 1 ： 0. 58, the reaction temperature was 98 ℃, and the reaction time was 9 h. The product was characterized by infrared spectroscopy and 1HNMR,confirmed its structure. The yield of the product could be reached more than 89.4% ,purity of the product was 97.6%.

关 键 词：3  3 '-亚甲基-双(6-羟基苯甲酸) 水杨酸 甲醛 磷酸 合成 

分 类 号：O625.52[理学—有机化学]