Feinkörnige Polyurethan-Teilchen, kolloide Polyharnstoff-Teilchen und Verfahren zu ihrer Herstellung
摘要
<p>Fine polyurethane particles or fine polyurethane gel particles, which have been surface-covered with colloidal polyurea particles, are provided. They are produced by emulsion polymerization of a polyisocyanate compound and an active-hydrogen-containing compound in an inert liquid while using colloidal polyurea particles as an emulsifier.</p>
