申请人:H.B. FULLER LICENSING & FINANCING, INC.
公开号:EP0552420A2
公开(公告)日:1993-07-28
Improved water dispersed polyurethanes are disclosed. Polyurethane-urea polymers in aqueous dispersion are obtained by chain extending an NCO-containing prepolymer in aqueous medium. The NCO-containing prepolymer is prepared by reacting a polyisocyanate with an active hydrogen-containing compound such as a polyol and an extended aliphatic diamine monomer, the reaction product of which is then dispersed in water and chain extended. The improved water dispersed polyurethane polymers of the invention are excellent coatings and adhesives.
本发明公开了改进型水分散聚氨酯。水分散型聚氨酯-尿素聚合物是通过在水介质中对含 NCO 的预聚物进行链延伸而获得的。含 NCO 预聚物的制备方法是将多异氰酸酯与活性含氢化合物(如多元醇)和延伸脂肪族二胺单体反应,然后将反应产物分散在水中并进行链延伸。本发明的改进型水分散聚氨酯聚合物是优良的涂料和粘合剂。