PROCESS FOR PRODUCING MODIFIED EPOXY RESIN

摘要

This invention provides a process for producing an epoxy resin composition
having core/shell rubber particles (rubber-like polymer particles) dispersed
in an
epoxy resin, wherein an epoxy resin composition excellent in the dispersed
state of
rubber-like polymer particles in an epoxy resin with a reduced amount of
contaminants
is produced easily and efficiently.

The epoxy resin composition having rubber-like polymer particles dispersed
well in an epoxy resin with less contaminant is obtained by bringing an
aqueous latex
of rubber-like polymer particles (B) into contact with an organic medium (C)
showing
partial solubility in water, then bringing an organic medium (D) having lower
partial
solubility in water than that of the organic medium (C) into contact therewith
to
separate water substantially, to remove the rubber-like polymer particles as a

dispersion (F) having the polymer particles dispersed in the organic medium,
and
mixing it with an epoxy resin (A), followed by distilling volatile components
away.