A method of making a polyurethane-foam sealant having saturated hydrocarbon-resin skeleton.

摘要

A polyurethane-foam sealant having a saturated hydrocarbon-resin skeleton and excellent in the stopping ability of water leakage can be made by reacting a polyol having a saturated hydrocarbon-resin skeleton, an organic isocyanate and a blowing agent in the presence of a reactive silicone-oil having hydroxyl group.