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作 者:沈介发[1] 何淑芹[2] 张跃[1] 刘建武[1] 严生虎[1]
机构地区:[1]江苏工业学院精细化工研究所,江苏常州213164 [2]中国石油吉林石化公司科技规划处,吉林吉林132021
出 处:《南京工业大学学报(自然科学版)》2007年第5期54-57,共4页Journal of Nanjing Tech University(Natural Science Edition)
基 金:吉林石化公司资助项目(04B50102)
摘 要:研究了合成二亚苄基山梨糖醇(DBS)、二(对甲基苄叉)山梨糖醇(p—CH3-DBS)和二(对氯苄叉)山梨糖醇(p—Cl-DBS)系列产品的投料摩尔比、反应用溶剂、催化剂对甲基苯磺酸和搅拌速度等因素对DBS产品收率和熔点的影响.在苯甲醛(或对甲基苯甲醛、对氯苯甲醛)和山梨糖醇投料摩尔比为(2.0—2.1):1,对甲基苯磺酸、环己烷用量分别为苯甲醛和山梨糖醇投料总质量的4.0%和550%,反应时间6h条件下,DBS、p-CH3-DBS和p-Cl-DBS产品收率大于70%,熔点分别为210—216℃、230~240℃和245—260℃.Dibenzylidene sorbitol ( DBS), p-tolualdehyde (p-CH3-DBS) , p-chlorobenzal dehyde derivatives, useful transparent agents for polypropylene resins, were prepared. Effects on the yields and melting points of DBS derivatives such as benzaldehyde/sorbitol (B/S) feeding molar rations, reaction duration and composition were investigated. The optiumal conditions of synthesis are obtained with following conditions: aldehyde/sorbitol feeding molar ratios (2.0 - 2. 1 ) : 1.0, the amount of catalyst and solvent 4.0% and 550% , the amount of accelerator on the basis of the invariable reaction temperature, reaction duration 6 hours and reaction temperature 72 ℃. The yields of DBS, p-CH3-DBS and p-Cl-DBS were over 70% , and the melting points were 210 -216 ℃, 230 -240 ℃ and 245 -260 ℃respectively.
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