Condensed resin dispersion and process for its production

摘要

A condensed resin dispersion having fine particles of a condensed resin dispersed stably in a polyether polyol (c), the condensed resin being a reaction product of an aldehyde and a compound condensable with the aldehyde, or of their precondensate, wherein the fine particles of the condensed resin are fine condensed resin particles formed by the reaction and precipitation conducted in an isocyanate-modified polyether (b) obtained by reacting an organic polyisocyanate to a polyether (a) having at least one active hydrogen group reactive with an isocyanate group, or to such a polyether (a) and a low molecular weight active hydrogen-containing compound having at least one active hydrogen group, and having substantially no free isocyanate group.