申请人:DAI-ICHI KOGYO SEIYAKU CO., LTD.
公开号:EP0498370A2
公开(公告)日:1992-08-12
The invention relates to a polyurethane type curable coating composition. This coating composition comprises an organic compound having a number average molecular weight of 300 to 20,000, which is represented by formula (1), and a polyisocyanate compound.
Z-[(A)m-(B)a-H]k (1)
wherein
A means
B means -R³O-;
the mode of bonding between A and B may be random or block;
Z means an active hydrogen compound residue;
R¹ means an alkylene group containing 1 to 10 carbon atoms;
R² means an alkyl group, an alkenyl group, an aryl group, an alkylaryl group or an aralkyl group each containing 1 to 20 carbon atoms;
R³ means an alkylene group containing 2 to 30 carbon atoms;
a means a number of 0 to 100;
k means a number of 1 to 12;
m means a number of 1 to 250; and
n means a number of 0 to 5.
Coating a substrate with the coating composition of the invention yields a coating film which is high in flexibility and adhesion to the substrate even at low temperature.
本发明涉及一种聚氨酯型可固化涂料组合物。这种涂料组合物包括一种平均分子量为 300 至 20,000 的有机化合物(由式(1)表示)和一种多异氰酸酯化合物。
Z-[(A)m-(B)a-H]k (1)
其中
A 表示
B 指-R³O-;
A 和 B 之间的键合方式可以是无规键合或嵌段键合;
Z 指活性氢化合物残基
R¹ 指含有 1 至 10 个碳原子的亚烷基;
R²指各含 1 至 20 个碳原子的烷基、烯基、芳基、烷芳基或芳烷基;
R³ 指含有 2 至 30 个碳原子的亚烷基;
a 指 0 至 100 的数字;
k 指 1 至 12 的数字;
m 指 1 至 250 的数字;以及
n 指 0 至 5 的数字。
用本发明的涂料组合物涂覆基材可获得即使在低温下也具有高柔韧性和与基材附着力的涂膜。