PURPOSE: To obtain a resin composition for powdery coating compound having excellent stability during preservation, providing a coating film by using a product of this invention by powdery coating, having the surface showing the same flexibility as that of thermoplastic resin in single use, excellent heat resistance and surface hardness.
CONSTITUTION: A mixture of (A) a thermoplastic resin containing hydroxyl group and/or amino group and (B) a block isocyanate is dissolved in a solvent heated to a temperature of ≤block dissociation temperature of the component B, then the mixture is precipitated by recrystallization method or blending with a poor solvent to give a resin composition for round powder coating compound having 0.3-500μ average particle diameter, where the blending ratio of the component A to the component B is 0.05-1.5 equivalent isocyanate group produced after block dissociation of the component B based on 1 equivalent isocyanate group and/or amino group of the component A, and a method of producing the composition is shown.
ENOMOTO KIMIHIRO
KOBAYASHI HIROSHI
