Process for producing a condensed resin dispersion
AssigneeAsahi Glass Company, Limited
InventorsTakao Doi, Noriko Itaya, Masami Yamashita, Nobuaki Kunii
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Abstract
A process for producing a condensed resin dispersion, which comprises subjecting an aldehyde and a compound condensable with the aldehyde, or their precondensate, to a condensation reaction in a dispersion medium consisting essentially of water and/or an organic solvent, to precipitate fine condensed resin particles which hardly settle in said dispersion medium, and then replacing the water and/or the organic solvent by an active hydrogen-containing compound having at least two active hydrogen-containing groups reactive with isocyanate groups.
Claims13
A process for producing a condensed resin dispersion, which comprises subjecting an aldehyde and a compound having two sites reactive with the aldehyde, or their precondensate, to a condensation reaction in a dispersion medium consisting essentially of water and/or an organic solvent, to precipitate a condensed aldehyde resin as fine condensed resin particles with a particle size of from 0.01 to 5 .mu.m in said dispersion medium, then adding an active hydrogen-containing compound having at least two active hydrogen-containing groups reactive with isocyanate groups, and then removing the water and/or organic solvent by vaporization.
Dependencies are inferred from the claim text.