| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an aqueous polyurethane emulsion, capable of obtaining a film excellent in re-dissolving property, close adhesion, coated film physical properties, etc., and without using any organic solvent or a powerful agitator in its production. <P>SOLUTION: This aqueous polyurethane emulsion is obtained by emulsifying in water a polyurethane resin obtained by reacting (A) an organic polyisocyanate containing (A1) an allophanate-modified polyisocyanate obtained from (A1-1) an alkoxypoly(oxyalkylene) glycol containing≥50 mol % oxyethylene group in its recurring units and (A1-2) hexamethylene diisocyanate, and substantially not containing isocyanurate group, (B) an active hydrogen-containing compound, (C) a compound containing an anionic polar group and the active hydrogen group and (D) a neutralizing agent. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
