粘接
粘接
점접
2014年
2期
67-68,79
,共3页
胡彬%陈吉伟%陈铮
鬍彬%陳吉偉%陳錚
호빈%진길위%진쟁
氰乙酸乙氧基乙酯%乙二醇单乙醚%氰乙酸乙酯%二丁基二月桂酸锡%酯交换
氰乙痠乙氧基乙酯%乙二醇單乙醚%氰乙痠乙酯%二丁基二月桂痠錫%酯交換
청을산을양기을지%을이순단을미%청을산을지%이정기이월계산석%지교환
ethoxyethyl cyanoacetate%2-ethoxyethanol%ethyl cyanoacetate%dibutyltin dilaurate%transesterification
氰乙酸乙氧基乙酯是低白化、低气味α-氰基丙烯酸乙氧基乙酯瞬干胶的关键性原料。本文以氰乙酸乙酯、乙二醇单乙醚为原料进行酯交换合成氰乙酸乙氧基乙酯。对反应的物质的量比、催化剂及用量、反应时间等条件进行了考查，最佳工艺条件为：n /n 为1/2；催化剂二丁基二月桂氰乙酸乙酯乙二醇单乙醚酸锡用量为氰乙酸乙酯的2.5％；反应时间10 h。在此条件下，反应产率85％，纯度97.3％。
氰乙痠乙氧基乙酯是低白化、低氣味α-氰基丙烯痠乙氧基乙酯瞬榦膠的關鍵性原料。本文以氰乙痠乙酯、乙二醇單乙醚為原料進行酯交換閤成氰乙痠乙氧基乙酯。對反應的物質的量比、催化劑及用量、反應時間等條件進行瞭攷查，最佳工藝條件為：n /n 為1/2；催化劑二丁基二月桂氰乙痠乙酯乙二醇單乙醚痠錫用量為氰乙痠乙酯的2.5％；反應時間10 h。在此條件下，反應產率85％，純度97.3％。
청을산을양기을지시저백화、저기미α-청기병희산을양기을지순간효적관건성원료。본문이청을산을지、을이순단을미위원료진행지교환합성청을산을양기을지。대반응적물질적량비、최화제급용량、반응시간등조건진행료고사，최가공예조건위：n /n 위1/2；최화제이정기이월계청을산을지을이순단을미산석용량위청을산을지적2.5％；반응시간10 h。재차조건하，반응산솔85％，순도97.3％。
Ethoxyethyl cyanoacetate is a principal raw material for making the ethoxyethyl-α-cyanoacrylate instantaneous adhesive with low whitening and low oder and was synthesized using transesterification with 2-ethoxyethanol and ethyl cyanoacetate as the raw materials and dibutyltin dilaurate as catalyst.The effect of the reactant mole ratio,reaction time,and catalyst on the product yield was investigaled.The results indicated that the optimum conditions are mole ratio of 2-ethoxyethanol to ethyl cyanoacetate 2:1,mass ratio of catalyst to ethyl cyanoacetate reactant 2.5% and reaction time 10 h.The product yield can reach 85%and the purity is 97.3%.
