Preparing polyurethane, useful in e.g. buildings, comprises reacting polyisocyanate with compound having two isocyante group reactive hydrogen atoms and compound having urethane group in molecule that contains no isocyanate reactive group

摘要

Preparation of polyurethane comprises reaction of polyisocyanates (a) with compound (b) with at least two isocyante group reactive hydrogen atoms in the presence of at least a compound (c) with at least a urethane group in the molecule that contains no isocyanate reactive groups.