| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hollow resin particle having an extremely high strength without decreasing the porosity, that is a ratio of spacial volume of pores to the volume of the hollow resin particle. <P>SOLUTION: There are at least two or more pores (S)having individual spaces and 1-40 vol.% average spacial volume to the volume of the hollow resn particle (P) in one hollow resin particle (P), volume average particle diameter is 0.5-50 μm and a resin component constituting the hollow resin particle preferably contains a cross-linked resin, which has at least one of urethane bond or urea bond. <P>COPYRIGHT: (C)2010,JPO&INPIT |
