Nippon Polyurethane Industry Co., Ltd.

Nippon Polyurethane Industry C. Ltd.

Shogo Itoh

Shin Konishi

Takeshi Morishima

A water-dispersible blocked isocyanate composition, including an isocyanate group-terminated precursor and a blocking agent for blocking a free isocyanate group of the precursor, wherein the precursor includes at least an organic diisocyanate, a low-molecular glycol, and a hydrophilic surfactant having at least one active hydrogen group. The precursor also has an isocyanurate ring structure; an average functional group number (f) satisfying 2.0.ltoreq.f.ltoreq.4.2; a low-molecular glycol content (X) satisfying 0.5 wt. %.ltoreq..times..ltoreq.15 wt. %; and a hydrophilic surfactant content(Y) satisfying 0.1 wt. %.ltoreq.Y.ltoreq.50 wt. %.

Water-dispersible blocked isocyanate composition, and water-base paint

A water-dispersible blocked isocyanate composition, including an isocyanate group-terminated precursor and a blocking agent for blocking a free isocyanate group of the precursor, wherein the precursor includes at least an organic diisocyanate, a low-molecular glycol, and a hydrophilic surfactant having at least one active hydrogen group. The precursor also has an isocyanurate ring structure; an average functional group number (f) satisfying 2.0.ltoreq.f.ltoreq.4.2; a low-molecular glycol content (X) satisfying 0.5 wt. %.ltoreq.X .ltoreq.15 wt. %; and a hydrophilic surfactant content(Y) satisfying 0.1 wt. % .ltoreq.Y.ltoreq.50 wt. %.

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Yokohama, Japan

Shogo Itoh