申请人:Adeka Corporation
公开号:EP1798248A1
公开(公告)日:2007-06-20
The water-dispersed polyurethane composition of the present invention comprises a polyisocyanate component (a), a polyol component (b), and water as the essential components, wherein, at least, an isocyanate compound represented by general formula (I) below is used as the polyisocyanate component (a). The water-dispersed polyurethane composition of the present invention is excellent in adhesiveness, water resistance, corrosion resistance, heat resistance, weather resistance, water repellency, oil repellency, and the like, and can be suitably used as paint for surface-treated steel plates.
wherein R, represents an alkyl group having 10 to 30 carbon atoms, R2 represents -N=C=O or -NH-C(=O)-C-O- R1, and A represents a residue other than two -N=C=O groups derived from a diisocyanate.
本发明的水分散型聚氨酯组合物由多异氰酸酯组分(a)、多元醇组分(b)和水作为基本成分组成,其中,至少使用下式(I)所代表的异氰酸酯化合物作为多异氰酸酯组分(a)。本发明的水分散聚氨酯组合物在粘合性、耐水性、耐腐蚀性、耐热性、耐候性、憎水性、憎油性等方面都很出色,可适当用作表面处理过的钢板的涂料。
其中 R 代表具有 10 至 30 个碳原子的烷基,R2 代表-N=C=O 或-NH-C(=O)-C-O- R1,而 A 代表从二异氰酸酯衍生的两个 -N=C=O 基团以外的残基。