申请人:KANSAI PAINT CO., LTD.
公开号:EP0768326A1
公开(公告)日:1997-04-16
This invention provides a thermosetting composition comprising (A) a compound (A-1) containing an epoxy group or groups and a reactive silicon group or groups as essential functional group components in the same molecule, or a mixture (A-2) of an epoxy group-containing compound and a reactive silicon group-containing compound, and (B) an organotin catalyst, a thermosetting composition comprising (A) a compound (A-3) containing (i) an epoxy group or groups, (ii) a reactive silicon group or groups and (iii) a hydroxyl group or groups and/or a carboxyl group or groups as essential functional group components in the same molecule, or a mixture (A-4) of at least two types of compounds, each compound containing at least one member selected from the class consisting of functional group components (i) to (iii), and all of the functional group components (i) to (iii) being present in said mixture, and (B) an organotin catalyst; and methods of forming a finish coat using these thermosetting compositions.
The thermosetting compositions of the invention is excellent in storage stability, curable at low temperatures, and capable of producing cured products free of discoloration. The coating methods of the invention can form coating films superior in low-temperature curability, finished appearance, acid resistance, scratch resistance, weatherability, etc.
本发明提供了一种热固性组合物,该组合物包含(A)化合物(A-1),该化合物(A-1)在同一分子中含有作为基本官能团组分的一个或多个环氧基团和一个或多个反应性硅基团,或含环氧基团化合物和含反应性硅基团化合物的混合物(A-2),以及(B)有机锡催化剂,该热固性组合物包含(A)化合物(A-3),该化合物(A-3)在同一分子中含有(i)一个或多个环氧基团、(ii) 活性硅基团和 (iii) 羟基和/或羧基作为同一分子中的基本官能团组分,或至少两类化合物的混合物 (A-4),每种化合物含有至少一个选自官能团组分 (i) 至 (iii) 组成的类别的成员,且所有官能团组分 (i) 至 (iii) 均存在于所述混合物中,以及 (B) 有机锡催化剂;以及使用这些热固性组合物形成面漆的方法。
本发明的热固性组合物具有优异的储存稳定性,可在低温下固化,并能生产出无褪色的固化产品。本发明的涂覆方法可形成在低温固化性、成品外观、耐酸性、耐刮伤性、耐候性等方面性能优异的涂膜。