Multi-stage process for the production of gas-filled microcapsules with defined narrow size distribution by defined external gassing during the build-up of microcapsules
申请人:Schering AG
公开号:US20020172762A1
公开(公告)日:2002-11-21
The subject of the invention is a multi-stage process for the production of narrowly-distributed gas-filled microcapsules. In one process step, polymerization of the shell-shaping substance(s) takes place, and in a process step that is separated from it in space and/or time, the formation of the microcapsules by a build-up process takes place. The build-up process is carried out by low-energy defined gas input of the gas that is to be encapsulated with the aid of a porous membrane that has small defined pore openings.
本发明的主题是一种生产窄分布气体填充微胶囊的多阶段工艺。在一个工艺步骤中,进行塑壳物质的聚合,而在一个在空间和/或时间上与之分离的工艺步骤中,通过堆积工艺形成微胶囊。积聚过程是通过低能量的确定气体输入来进行的,气体要借助具有确定小孔开口的多孔膜进行封装。