The present invention is directed to a novel coating composition comprising:
a) 5-64 percent of an acrylic co-polymer comprising a copolymer with a glass transition between -10°C and 35°C (using the Fox method of Tg calculation) and a relative weight average molecular weight of 1000-7000.
b) 10 to 50 percent of an organic solvent,
c) 0 to 30 percent of a reactive oligomer,
d) 0 to 30 percent of a reactive diluent,
e) 0 to 3 percent of a curing catalyst and photostabilizer,
f) crosslinker preferably 0.75 to 2.0 isocyanate equivalents of an aliphatic polyisocyanate per active hydrogen based on a),
g) 0 to 3 percent of additives,
h) 0 to 2.0 P/B ratio pigments.
本发明涉及一种新型涂料组合物,包括: a) 5-64%的
丙烯酸共聚物,该共聚物的
玻璃化转变温度在-10℃和 35℃之间(采用福克斯 Tg 计算方法),相对平均分子量为 1000-7000。 b)10%至 50%的有机溶剂,c)0%至 30%的活性低聚物,d)0%至 30%的活性稀释剂,e)0%至 3%的固化催化剂和
光稳定剂,f)
交联剂,以 a)为基础,每活性氢最好含有 0.75 至 2.0
异氰酸酯当量的脂肪族多
异氰酸酯,g)0%至 3%的添加剂,h)0%至 2.0 P/B 比率的
颜料。