ELECTROMAGNETIC STEEL SHEET WITH INSULATIVE COATING, METHOD FOR PRODUCING SAME, AND COATING AGENT FOR FORMING INSULATIVE COATING

摘要

A coating material for forming an insulation coating includes, in addition to a solvent: an aqueous carboxy group-containing resin as component (A) in an amount of 100 parts by mass in terms of solid content; an aluminum-containing oxide as component (B) in an amount of more than 40 parts by mass but less than 150 parts by mass in terms of solid content, based on the component (A) present in an amount of 100 parts by mass in terms of solid content; and at least one crosslinking agent as component (C) selected from the group consisting of melamine, isocyanate and oxazoline, in an amount of more than 20 parts by mass but less than 100 parts by mass in terms of solid content, based on the component (A) present in an amount of 100 parts by mass in terms of solid content. An electrical steel sheet in which the coating material is used and which has a large interlaminar insulation resistance when laminated. A manufacturing method therefor.