Moisture-curable urethane resin compositions
AssigneeDai-Ichi Kogyo Seiyaku Co., Ltd.
InventorsHirohisa Maki, Shigenobu Miyamoto, Ryoji Fujimoto, Toshiki Noda
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Abstract
Moisture-curable urethane resin compositions comprising: (a) a urethane prepolymer having two or more terminal isocyanate groups, (b) a blocked amine compound which is essentially nonreactive with an isocyanate group and generates a primary or a secondary amino group upon contact with water, and (c) an inorganic filler treated with an organic compound, are disclosed. More particularly, the urethane resin compositions comprise a hydrophilic urethane prepolymer having oxyethylene moieties, and a blocked amine compound having two or more oxazolidine rings.
Claims8
A moisture-curable urethane resin composition comprising:
- (a) 100 parts by weight of a urethane prepolymer having two or more terminal isocyanate groups;
- (b) 6 to 50 parts by weight of a blocked amine compound having two or more oxazolidine rings which is essentially nonreactive with an isocyanate group and which generates a primary or a secondary amino group upon contact with moisture;
- and
- (c) 5 to 400 parts by weight of an inorganic filler treated with an organic compound selected from the group consisting of calcium carbonate treated with a fatty acid, calcium carbonate treated with a fatty acid metallic salt, calcium carbonate treated with a fatty acid ester, calcium carbonate treated with a resin acid, calcium carbonate treated with a titanium compound, calcium carbonate treated with a silane, calcium carbonate treated with a surface active agent, calcium carbonate treated with a polyacrylic acid, talc treated with a fatty acid, talc treated with a fatty acid metallic salt, talc treated with a fatty acid ester, talc treated with a resin acid, talc treated with a titanium compound, talc treated with a silane, talc treated with a surface active agent, talc treated with a polyacrylic acid, and mixtures thereof.
Dependencies are inferred from the claim text.