非对称型二亚苄基山梨糖醇及其衍生物合成研究  

Synthesis of diastereoisomeric dibenzylidene sorbitol and its derivates

作　　者：王小强[1] 李吉春[1] 董炳利[1] 张志喜[1] 柯长颢 

机构地区：[1]中国石油兰州石化公司石油化工研究院,甘肃兰州730060 [2]中国石油兰州化学工业公司有机厂,甘肃兰州730060

出　　处：《石化技术与应用》2003年第6期399-401,共3页Petrochemical Technology & Application

摘　　要：以山梨糖醇与苯甲醛和对甲基苯甲醛组成的混合醛为原料 ,制备非对称型二亚苄基山梨糖醇及其同系衍生物成核剂。在苯甲醛与对甲基苯甲醛掺混比例为 1 /9～ 3 /7时 ,制得的非对称型二亚苄基山梨糖醇成核剂与Me-DBS相比较 ,产物反应收率达到 98%,制品熔点下降 2～ 1 4℃ ,气味减弱 ,加工性能得到改善。添加量为 0 .2 %～ 0 .3 %时 ,制得的透明PP片材 ,透光率在 80 %左右。Diastereoisomeric dibenzylidene sorbitol and its derivates nucleating aqent were synthesized with sorbitol and the mixture of benzaldehyde and p -methyl benzaldehyde as materials.When the mass ratio of benzaldehyde to p -methyl benzaldehyde as materials.When the mass ratio of benzaldehyde to p -methyl benzaldehyde was 1/9 to 3/7,the product had the yield 98%,the melting point decreased 2～14 ℃,the ordour was weakened and the processability was improved as compared with those of Me-DBS.The polypropylene had the transparency about 80% by adding 0.2%～0.3% of nucleating agent.

关 键 词：山梨糖醇 苯甲醛 对甲基苯甲醛 非对称型成核剂 

分 类 号：TQ324.24[化学工程—合成树脂塑料工业]