abstract |
PROBLEM TO BE SOLVED: To form a coating film in the air, have a sufficiently long gelation time, and can be applied in a field requiring extremely high heat resistance and durability such as an aerospace structure. To provide a borazine-containing silicon-based polymer-containing coating agent. SOLUTION: B, B ′, B ″ -tris (1′-propynyl) -N, N ′, N ″ -trimethylborazine and a silicon compound having at least two or more Si—H bonds are polymerized. A coating agent containing a propynylborazine-silicon polymer obtained as described above. [Selection figure] None |