RESIN DISPERSIONS HAVING UNIFORM PARTICLE DIAMETERS, RESIN PARTICLES AND PROCESSES FOR PRODUCING BOTH
申请人:SANYO CHEMICAL INDUSTRIES, LTD.
公开号:EP1283236A1
公开(公告)日:2003-02-12
The present invention provides a method of producing an aqueous dispersion which comprises
dispersing a resin (b) or a solvent solution thereof, or a precursor (b0) of said resin (b) or a solvent solution thereof in an aqueous dispersion of resin particles (A) composed of resin (a) and
causing the precursor (b0) to react in the case where the precursor (b0) or a solvent solution thereof is used, to prepare resin particles (B) composed of said resin (b) in said aqueous dispersion of resin particles (A) and
thereby give an aqueous dispersion (X1) of resin particles (C) having a structure such that the resin particle (A) adheres to the surface of the resin particle (B).
Further, an aqueous dispersion (X2) of resin particles (B) can be produced by a method
which comprises cleaving the resin particle (A) and resin particle (B) from each other and
removing resin particles (A), or
which comprises dissolving resin particles (A).
The present invention can make it possible to obtain resin particles of uniform particle diameter.
本发明提供了一种生产水性分散体的方法,该方法包括
将树脂 (b) 或其溶剂溶液,或所述树脂 (b) 的前体 (b0) 或其溶剂溶液分散在由树脂 (a) 组成的树脂颗粒 (A) 的水分散液中,以及
在使用前体(b0)或其溶剂溶液的情况下,使前体(b0)发生反应,以制备在所述树脂颗粒(A)的水分散液中由所述树脂(b)组成的树脂颗粒(B),并由此得到水分散液。
从而得到树脂颗粒(C)的水分散液(X1),该树脂颗粒(C)具有使树脂颗粒(A)粘附在树脂颗粒(B)表面的结构。
此外,树脂颗粒(B)的水性分散液(X2)可通过以下方法制得
该方法包括将树脂颗粒(A)和树脂颗粒(B)相互分离并
去除树脂颗粒(A),或
包括溶解树脂颗粒(A)。
本发明可以获得粒径均匀的树脂颗粒。