abstract |
The coating solution of the present invention comprises polyvinyl alcohol (PVA), an organometallic compound having a boric acid and / or PVA crosslinking property, an inorganic filler, a water-soluble compound having a carboxyl group and / or a sulfonic acid group, and water. According to the present invention, it is possible to obtain a coating liquid useful for the production of a laminated porous film which is inhibited from being broken and is excellent in heat shape stability. |