A high solids, organic solvent based, sprayable coating composition which is capable of acid catalyzed crosslinking is composed of an active hydrogen-containing resin, a curing agent present externally and/or internally as a part of the active hydrogen-containing resin; and a catalytic amount of a non-ionic ester of a sulfonic acid. The sulfonic acid ester is represented by the following structural formulas: ##STR1## wherein: Z is a radical selected from the group consisting of amino and an organic radical, said organic radical being connected to the sulfur atom by a carbon atom; W is C.sub.1 -C.sub.18 alkylene, C.sub.2 -C.sub.18 alkenylene; V is C.sub.1 -C.sub.18 alkylene, C.sub.1 -C.sub.18 hydroxyl substituted alkylene, C.sub.2 -C.sub.18 alkenylene, C.sub.2 -C.sub.18 hydroxyl substituted alkenylene; and R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 are independently hydrogen or an organic radical.
                            这是一种高固体含量、有机溶剂基、可喷涂的涂层组合物,能够发生酸催化交联,由含活性氢
树脂、作为活性氢
树脂的外部和/或内部固化剂;以及非离子
磺酸酯的催化量组成。
磺酸酯由以下结构式表示:##STR1##其中:Z是从
氨基和有机基选出的基团,所述有机基团通过碳原子与
硫原子连接;W是C.sub.1-C.sub.18烷基、C.sub.2-C.sub.18烯基;V是C.sub.1-C.sub.18烷基、C.sub.1-C.sub.18羟基取代的烷基、C.sub.2-C.sub.18烯基、C.sub.2-C.sub.18羟基取代的烯基;R.sub.1、R.sub.2、R.sub.3、R.sub.4、R.sub.5独立地是氢或有机基团。