| 摘要 |
PROBLEM TO BE SOLVED: To obtain a sealer which is used for reinforcing the surface layer of a porous inorganic material, is excellent in the infiltration into the surface layer of the inorganic material, and has good adherence to a top coating film and excellent reactivity therewith. SOLUTION: The moisture-curing resin composition contains (A) a polyisocyanate component containing two or more free isocyanato groups in the molecule and having a molecular weight of 300 to 3,000 and (B) an isocyanate component having a molecular weight of less than 300 and a vapor pressure of 0.5 Pa or lower. The sealer for reinforcing the surface layer of the porous inorganic material contains the composition as the main constituent.
|
