A finely powdered polymer latex in the rodlike form having a major axis of from 0.1 to 100 microns and a minor axis of below 1/3 times the major axis. When the particles are dispersed in water at a concentration of 15wt%, the thixotropy index, η3/η30 is not less than 1.5.
The polymer powder of the above size and configuration is useful in various fields including paint binders, diagnostic means and cosmetics.
The polymer latex is prepared by solubilizing a polymerizable monomer in rod-shaped micelles, and polymerizing the monomer while keeping the rod-shaped micelle structure.
一种细粉末状聚合物胶乳,呈棒状,其主轴为 0.1 至 100 微米,小轴低于主轴的 1/3 倍。当颗粒以 15wt% 的浓度分散在
水中时,触变指数 η3/η30 不小于 1.5。
上述尺寸和结构的聚合物粉末可用于各种领域,包括涂料粘合剂、诊断手段和化妆品。
聚合物胶乳的制备方法是将可聚合单体溶解在棒状胶束中,并在保持棒状胶束结构的同时使单体聚合。