相转移催化亚硫酸氢钠封闭异氰酸酯  

Blocking of isocyanate with sodium bisulfite in the presence of phase-transfer catalyst

作　　者：张岩[1] 赵殊[1] 

机构地区：[1]东北林业大学阻燃材料分子设计与制备黑龙江省重点实验室,黑龙江哈尔滨150040

出　　处：《粘接》2010年第4期62-63,共2页Adhesion

摘　　要：使用相转移催化剂四丁基溴化铵催化亚硫酸氢钠固体粉末与溶液中的异氰酸酯PAPI的封闭反应,提高封闭反应程度,并且对该封闭反应的条件(反应温度、催化剂用量、原料配比、反应时间)进行了探索,得到较为满意的结果。The phase-transfer catalyst, tetrabutyl ammoniun bromide, was used in blocking reaction of PAPI with sodium bisulfite powder in solvent, the blocking reaction was improved. The influences of reaction time, reaction temperature, catalyst dosage and molar ratio of raw materials on blocking reaction ofiscoyanate were investigated.

关 键 词：多亚甲基多苯基多异氰酸酯(PAPI) 亚硫酸氢钠 四丁基溴化铵 封闭 相转移催化 

分 类 号：TQ430.61[化学工程]