| 摘要 |
PROBLEM TO BE SOLVED: To obtain a powdery coating material capable of performing an electrostatic coating on a glass surface by using a tribo-type spraying gun and good in adhesiveness to the glass surface by attaching fine alumina particles on the surface of the powder particles. SOLUTION: This powder coating material is obtained by attaching (B) fine alumina particles to the surface of (A) powder particles having 7-20μm volume-averaged particle diameter. Further, in the component (B), the specific surface area measured by a BET method is >=20m<2> /g, the component (B) attaches on the surface of the component (A) in a ratio of 0.1-1.0wt.% based on the component (A), the volume ratio of the component (A) having >=30μm volume averaged particle diameter is made <=10%, and e.g. as the component (A), a material consisting of a sticking resin such as an epoxy resin and a curing agent such as an isocyanate, is preferably used.
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