HERDBARA PULVERFORMIGA BELEGGNINGSMEDEL MED HYDROXIGRUPPHALTIGA POLYMERER SOM BINDEMEDEL OCH EPSILON-KAPROLAKTAMFORSLUTNA POLYISOCYANATER SOM BRYGGBILDARE

摘要

The invention relates to a process of forming a continuous coating on an article by spraying a pulverulent mixture of a polymer containing hydroxy groups having a softening point of at least 40 DEG C and of a masked polyisocyanate through an electric field on an article to adhere the said mixture to said article and baking said mixture to fuse it into a continuous coating the improvement which comprises using as a masked polyisocyanate a epsilon -caprolactam masked polyisocyanate.