申请人:ROHM AND HAAS COMPANY
公开号:EP0606749A1
公开(公告)日:1994-07-20
This invention is directed to a polyurethane mixture. More particularly, there is provided a mixture of polyurethanes comprising a first polyurethane with at least two end groups, where each end group comprises a terminal isocyanate and a polyether; a second polyurethane with at least two end groups, where each end group comprises a terminal isocyanate group and a non-functional group; and a third polyurethane with at least two end groups, where one end group comprises a terminal isocyanate and a polyether and one other end group comprises a terminal isocyanate and a non-functional group. A method for improving the sag resistance of an aqueous composition is also provided. This method permits the formulation of aqueous compositions which resist the tendency to sag. The polyurethane mixture of this invention is useful for thickening aqueous compositions such as paints, coatings, cosmetics, personal care items, hair shampoos and conditioners, cleaners, and the like.
本发明涉及一种聚氨酯混合物。更具体地说,本发明提供了一种聚氨酯混合物,该混合物包括具有至少两个端基的第一种聚氨酯,其中每个端基包括一个异氰酸酯端基和一个聚醚;具有至少两个端基的第二种聚氨酯,其中每个端基包括一个异氰酸酯端基和一个非官能团;以及具有至少两个端基的第三种聚氨酯,其中一个端基包括一个异氰酸酯端基和一个聚醚,另一个端基包括一个异氰酸酯端基和一个非官能团。此外,还提供了一种改善水性组合物抗下垂性的方法。这种方法可以配制出抗下垂的水性组合物。本发明的聚氨酯混合物可用于油漆、涂料、化妆品、个人护理用品、洗发水和护发素、清洁剂等水性组合物的增稠。