| 摘要 |
A method for producing a one-pack moisture-curing polyurethane composition comprising the steps of: a mixing step of mixing a liquid component (A) containing a polyol compound and a powder component (B) containing a filler, and obtaining a paste-like mixture of the liquid component (A) and the powder component (B); a dehydration step of removing at least part of residual moisture in the paste-like mixture after the mixing step; a prepolymer production step of mixing a polyisocyanate compound (C) and the paste-like mixture after the dehydration step, and obtaining a mixture containing a urethane prepolymer produced by a reaction between the polyisocyanate compound (C) and the polyol compound in the paste-like mixture; and a composition production step of mixing the above mixture with a reaction product (D) of an aliphatic isocyanate compound (d1) and an alkoxysilane (d2), and obtaining a one-pack moisture-curing polyurethane composition. |
