Preparation method of microcapsule for electrophoretic display

The invention discloses an electrophoresis-displaying microcapsule and its preparing method, which recondenses hydrolysate of styrene-maleic anhydride copolymer and glutin to prepare the microcapsule. By the proper technique, it firstly emulsifies the encapsulated matter in the styrene-maleic anhydride copolymer solution, adds in the gultin, and then recondenses them by adding acid and/or water. Its advantages: provision of synthetic high-molecular styrene-maleic anhydride copolymer overcomes the disadvantage that the natural gum Arabic high molecule is easy to degrade so as to affect performance of the microcapsule, and reduces the cost. And by proper technique, it can prepare circular microcapsules which are stable, sealed and have more uniform particle size distribution. 本发明公开了一种用于电泳显示的微胶囊及其制备方法。利用苯乙烯马来酸酐共聚物的水解物与明胶发生复凝聚来制备微胶囊。通过合适的工艺将被包囊物先乳化于苯乙烯马来酸酐共聚物溶液中，加入明胶，通过加酸和/或加水使其发生复凝聚。本发明的优点是通过提供合成高分子苯乙烯马来酸酐共聚物，克服了阿拉伯胶天然高分子易降解而影响微胶囊性能的缺点，降低了成本。并通过合适的工艺制备出稳定的、密封的、粒径分布更均匀的圆形微胶囊。