申请人:Mizumori Masahide
公开号:US20110020741A1
公开(公告)日:2011-01-27
A resin particle having a sufficiently narrow particle size distribution obtainable by using a supercritical fluid, and a production method for obtaining a resin particle having a sufficiently narrow particle size distribution by using a supercritical fluid are provided. The present invention provides a resin particle (C) having a microparticle (A) fixed to or formed as a film on a surface of a resin particle (B) containing a resin (b), wherein the degree of swelling of the microparticle (A) by liquid or supercritical carbon dioxide (X) at a temperature lower than the glass transition temperature or the melting point of the microparticle (A) is 16% or less, and the microparticle (A) is at least one kind selected from the group consisting of a crystalline resin (a1), a noncrystalline resin (a2), and an inorganic compound (a3).
本发明提供了一种通过使用超临界流体获得具有足够窄的粒径分布的树脂颗粒的方法,以及通过使用超临界流体获得具有足够窄的粒径分布的树脂颗粒的生产方法。本发明提供了一种树脂颗粒(C),其具有微粒子(A)固定到或形成为膜的表面上的树脂颗粒(B),其中微粒子(A)在低于微粒子(A)的玻璃转变温度或熔点的温度下,被液体或超临界二氧化碳(X)溶胀的程度为16%或更少,并且微粒子(A)至少选自由包括结晶树脂(a1)、非晶树脂(a2)和无机化合物(a3)的群组。