Provided are an emulsion of a nitrogen atom-containing polymer or a salt thereof, the emulsion having high emulsion stability and having a low dispersity of the particle diameter of emulsified particles, and a method for producing the emulsion. Also provided is a method for producing particles including a crosslinked nitrogen atom-containing polymer or a salt thereof by using the emulsion described above. Disclosed is a method for producing an emulsion of a nitrogen atom-containing polymer or a salt thereof, the method including a step of mixing a first solution that includes a nitrogen atom-containing polymer or a salt thereof and a hydrophilic solvent and has a viscosity of 10 to 2,000 mPa·s, and a second solution that includes a hydrophobic solvent and has a viscosity of 1 to 100 mPa·s, stirring the mixture, and thus obtaining an emulsion of the nitrogen atom-containing polymer or a salt thereof, wherein a ratio between the viscosity of the first solution and the viscosity of the second solution is in a range of 0.1:1 to 300:1.
本发明提供了一种含氮原子聚合物或其盐的乳液,该乳液具有较高的乳液稳定性,且乳化颗粒的粒径分散性较低,还提供了一种生产该乳液的方法。还提供了一种使用上述乳液生产包括交联含氮原子聚合物或其盐的颗粒的方法。公开了一种生产含氮原子聚合物或其盐的乳液的方法,该方法包括以下步骤:混合第一溶液,该溶液包括含氮原子聚合物或其盐和亲
水性溶剂,粘度为 10 至 2,000 mPa-s、和包括疏
水性溶剂且粘度为 1 至 100 mPa-s 的第二种溶液,搅拌混合物,从而获得含氮原子聚合物或其盐的乳液,其中第一种溶液的粘度和第二种溶液的粘度之间的比例范围为 0.1:1 至 300:1。