1,3-2,4-二亚(对甲基)苄基山梨糖醇的合成研究  

Study on Synthesis of 1,3-2,4-Di(p-methyl)Benzylidene Sorbitol

作　　者：张志喜[1] 董炳利[1] 王小强[1] 李吉春[1] 

机构地区：[1]中国石油兰州石化公司石油化工研究院,兰州730060

出　　处：《塑料助剂》2004年第5期16-19,共4页Plastics Additives

摘　　要：在14L模式釜中合成出了1,3-2,4—二亚(对甲基)苄基山梨糖醇成核剂,产品收率在98%以上,熔点合格。确定了合成反应的最佳工艺条件为酸催化剂用量A/S为1.3%左右,反应原料物质的量比为1.9～2.1,反应中要加入“促进剂M”并以方式2加入效果最好,反应时间4.5h,反应初期缓慢加热,中后期加热循环水温度90℃左右。将合成的1,3-2,4二亚(对甲基)苄基山梨糖醇(p-Me-DBS)应用于聚丙烯,结果表明p-Me-DBS透明效果好于DBS,与进口产品接近。Di( p-methyl)benzylidene sorbitol(abbreviation as p-Me-DBS)nucleating agent was synthesized in14L reator,the product's yield can reach98%,the melting temperature was proved to be accepted.It was obtained the optimum reaction conditions,which is the acid catalyst(A/S)was1.3%,the raw materials mole ratio is1.9to2.1,the reaction time is4.5h,slower heating in the initial reaction,the accelerant M is added as second way,the circle water temperature is90℃after the middle reaction time.The p-Me-DBS was applyed to the polypropylene whose transparency is better than DBS and compare with the import products.

关 键 词：甲基 山梨糖醇 苄基 合成研究 酸催化剂 成核剂 产品收率 物质的量比 反应原料 合成反应 

分 类 号：TQ320.4[化学工程—合成树脂塑料工业]