COMPOSITE MATERIAL AQUEOUS RESIN COMPOSITION AND COATING MATERIAL

An object of the present invention is to provide a composite which is useful for forming a coating film having excellent corrosion resistance, heat resistance and solvent resistance, and an aqueous resin composition (including a coating material) containing the composite. The above problem is solved by a composite comprising an unsaturated polymerizable monomer polymer and a cationic group-containing polyurethane resin; the cationic group-containing polyurethane resin contains a structural unit derived from a specific polyisocyanate, a structural unit derived from a specific polyol, a structural unit derived from two or more specific diols, and a structural unit derived from a specific tertiary amine compound and/or a salt thereof. 本发明的课题在于提供对于形成耐腐蚀性、耐热性及耐溶剂性优异的被膜有用的复合体及含有该复合体的水性树脂组合物(包含涂料)。利用种复合体来解决上述课题，所述复合体包含不饱和聚合性单体聚合物和含阳离子性基团的聚氨酯树脂，含阳离子性基团的聚氨酯树脂包含来自特定多异氰酸酯的结构单元、来自特定多元醇的结构单元、来自2种以上特定二醇的结构单元和来自特定叔胺化合物和/或其盐的结构单元。