| 摘要 |
A process for efficiently producing an agglomerate resulting from removal of impurities from a water-base latex of rubbery polymer particles or dry powde r thereof and producing a dispersion having rubbery polymer particles disperse d in an organic solvent; and a process for efficiently producing a resin composition of low impurity content, in which the state of dispersion of rubbery polymer particles is excellent, from the above dispersion. In particular, a rubbery polymer particle agglomerate of low impurity content i s obtained by first mixing a water-base latex of rubbery polymer particles wit h an organic solvent exhibiting partial solubility in water, bringing the resultant mixture into contact with water to thereby form a rubbery polymer particle agglomerate, and thereafter separating the water phase from the agglomerate/water phase mixture. Further, a resin composition of low impurit y content having rubbery polymer particles favorably dispersed is obtained by first adding an organic solvent to the above agglomerate, mixing the obtaine d dispersion with a polymerizable organic compound having a reactive group, su ch as an epoxy resin, and thereafter distilling off volatile components.</SDOAB >
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