A polyurethane/urea/thiourea latex having a narrow molecular weight polydispersity and sub-micron particle size can be prepared by first preparing a high internal phase ratio (HIPR) emulsion of a polyurethane/urea/thiourea prepolymer, then contacting the emulsion with a chain-extending reagent under such conditions to form the polymer latex.
可以通过首先制备聚
氨酯/
脲/
硫脲预聚物的高内相比(HIPR)乳液,然后在适当条件下将乳液与链延长试剂接触以形成分子量分布狭窄、亚微米粒径的聚
氨酯/
脲/
硫脲乳液。