树脂催化合成桐酸甲酯-马来酸酐加合物  

Synthesis of methyl-α-eleostearate-maleic anhydride adduct by resin catalysis

作　　者：周尽花[1] 杜勋军[1] 吴宇雄[1] 叶翠层[1] 孙汉洲[1] 章怀云[2] 谭晓风[3] 

机构地区：[1]中南林业科技大学应用化学研究所,湖南长沙410004 [2]中南林业科技大学生物技术开放性中心实验室,湖南长沙410004 [3]中南林业科技大学经济林育种与栽培国家林业局重点实验室,湖南长沙410004

出　　处：《中南林业科技大学学报》2010年第12期138-141,155,共5页Journal of Central South University of Forestry & Technology

基　　金：国家科技部林业公益性行业科研专项(200904023)

摘　　要：桐油是我国重要的林产生物质资源,开发桐油下游产品,提高桐油经济附加值具有重要的意义。由桐油经酯交换合成了桐酸甲酯,采用树脂催化法在溶液中合成了桐酸甲酯-马来酸酐加合物(MEMAA),考察了不同催化树脂种类、树脂用量、反应时间、物料配比等因素对MEMAA收率的影响。结果表明:DT-851为桐酸甲酯与马来酸酐加成反应的适宜催化树脂,当桐酸甲酯用量为20 g时,桐酸甲酯与马来酸酐摩尔物料比为1∶1.3,催化树脂用量为4 g,反应介质甲苯用量为100 mL,回流反应10 h,所得MEMAA总收率为76.9%(以桐油计)。树脂催化溶液法合成MEMAA具有收率高、产物易分离纯化、反应条件温和、树脂可反复使用等特点。Tung oil is an important forestry biomass resource.Developing Tung oil＇s downstream products and improving Tung oil＇s economic value-added are of great significance.Methyl-α-eleostearate was synthesized from Tung oil by transesterification and then,Methyl-α-Eleostearate-Maleic Anhydride Adduct（MEMAA） was synthesized by resin catalysis method in toluene.The influences of catalytic resin type,resin dosage,reaction duration and material mole ratio on MEMAA were investigated.Experimental results show that DT-851 catalytic resin was suitable for the catalysis of methyl-α-eleostearate-maleic anhydride addition reaction.The appropriate addition conditions are as follows： methyl-α-eleostearate 20 g,methyl-α-eleostearate and maleic anhydride mole ratio 1∶1.3;DT-851 resin dosage 4 g;reaction media 100 mL toluene and refluxing for 10 hours.MEMAA＇s yield was 76.9%（calculated from Tung oil） under the appropriate conditions.Synthesis of MEMAA by resin catalysis in solution features high yield,easy separation and purification,mild reaction condition and good resin use repeatability.

关 键 词：桐油 桐酸甲酯-马来酸酐加合物 桐酸甲酯 催化 

分 类 号：TQ645.1[化学工程—精细化工]