申请人:DAI-ICHI KOGYO SEIYAKU CO., LTD.
公开号:EP0416659A2
公开(公告)日:1991-03-13
This invention relates to a method of producing particulate polymers. This production method is characterized in that a mixture of an isocyanate compound containing two or more isocyanato groups per molecule and a surfactant containing two or more hydroxyl groups per molecule is emulsified and allowed to cure in a dispersing medium which does not dissolve the isocyanate compound without use of a protective colloid. According to the production method of the invention, there occurs no aggregation of polymer particles during and after the curing reaction.
本发明涉及一种生产微粒聚合物的方法。这种生产方法的特点是,将每分子含有两个或两个以上异氰酸酯基团的异氰酸酯化合物和每分子含有两个或两个以上羟基的表面活性剂的混合物乳化,并在不使用保护胶体的情况下,使其在不溶解异氰酸酯化合物的分散介质中固化。根据本发明的生产方法,聚合物颗粒在固化反应期间和之后不会发生聚集。