1-苯甲氧基-3-烷氧基-2-丙醇成膜助剂的制备及应用

Preparation and application of 1-phenoxy-3-alkoxy-2-propanol film forming auxiliaries

摘要:

以苯甲醇和异丙基缩水甘油醚、正丁基缩水甘油醚为原料，合成1-苯甲氧基-3-烷氧基-2-丙醇成膜助剂。探究了最佳工艺条件为：n(苯甲醇)∶n(烷基缩水甘油醚)=1∶1.5，反应温度120℃,反应时间9h，催化剂为复合催化剂（m甲醇钠∶m四丁基溴化铵=2∶1）,催化剂用量0.8%(总质量比)。采用红外光谱和核磁共振氢谱验证了成膜助剂的化学结构。测定1-苯甲氧基-3-异丙氧基-2-丙醇成膜助剂的沸点为267℃~270℃，1-苯甲氧基-3-正丁氧基-2-丙醇成膜助剂的沸点为276℃~280℃。探究了合成的成膜助剂在乳胶漆中的应用，分别做了在最低成膜温度、涂膜表面形态AFM图、涂膜的透光率、涂膜的硬度、涂膜的吸水率、热储存稳定性、展色性和耐水性等方面的测试，结果表示合成的成膜助剂总体性能优于传统成膜助剂十二醇酯。

Abstract:

1- phenoxy -3- alkoxy -2- propanol film forming auxiliaries were synthesized from benzyl alcohol, isopropyl glycidyl ether and n-butyl glycidyl ether.The optimum process conditions were investigated as follows: N (benzyl alcohol)∶ N (alkyl glycidyl ether)=1∶1.5, reaction temperature 120℃, reaction time 9h, catalyst as compound catalyst (m sodium methoxide∶ m tetrabutylammonium bromide = 2∶1), catalyst dosage 0.8%(total mass ratio).The chemical structure of the film forming auxiliaries was verified by FTIR and 1H NMR spectra.The boiling points of 1-phenoxy-3-isopropoxy-2-propanol film forming assistant and 1-phenoxy-3-n-butoxy-2-propanol film forming assistant were determined as 267℃~270℃ and 276℃~280℃ respectively.Explores the application of synthesis of film forming additives in latex paint, respectively made in the minimum film-forming temperature, coating surface morphology AFM figure, light transmittance of coating, coating hardness, water absorption and heat storage stability of the coating, color and water resistance test, the results said synthesis of film forming additives overall performance is superior to the traditional film forming additives 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate.