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    • 2. 发明授权
    • High solid coating composition and method for forming topcoat using same
    • 高固体涂料组合物和使用其形成面漆的方法
    • US6045870A
    • 2000-04-04
    • US145427
    • 1998-09-01
    • Kohsuke NouraYoshiyuki YukawaMasaaki SaikaMotoshi YabutaYasumasa Okumura
    • Kohsuke NouraYoshiyuki YukawaMasaaki SaikaMotoshi YabutaYasumasa Okumura
    • C09D143/04C09D201/08B05D3/02
    • C09D201/08C09D143/04C08L2205/18
    • An organic solvent-based heat-curable high solid coating composition comprising:(A) a carboxyl-containing compound having an acid value of 50 to 500 mg KOH/g wherein 20 mol % or more of the carboxyl groups are silylated carboxyl groups,(B) at least one epoxide selected from (B-1) an epoxy-, hydroxyl- and hydrolyzable alkoxysilyl-containing vinyl polymer, (B-2) the vinyl polymer (B-1) wherein 20 mol % or more of the hydroxyl groups are silylated hydroxyl groups, and (B-3) an epoxy compound having a number average molecular weight less than 1,000, and(C) a crosslinked particulate polymer,the composition having a solid content of 65 wt. % or more; and a method for forming a topcoat using the composition. The composition of the invention has a sufficiently high solid content, is capable of forming a coating film with high resistance to acids and the like, and is excellent in low-temperature curability, storage stability and recoat adhesion.
    • 一种有机溶剂型可热固化高固体涂料组合物,其包含:(A)酸值为50〜500mgKOH / g的含羧基化合物,其中20摩尔%以上的羧基为甲硅烷基化羧基( B)至少一种选自(B-1)环氧基,羟基和可水解的含烷氧基甲硅烷基的乙烯基聚合物的环氧化物,(B-2)乙烯基聚合物(B-1),其中20mol%或更多的羟基 是(甲基)丙烯酸羟基,和(B-3)数均分子量小于1000的环氧化合物,和(C)交联的颗粒聚合物,该组合物的固含量为65重量% % 或者更多; 以及使用该组合物形成面漆的方法。 本发明的组合物具有足够高的固体含量,能够形成具有高耐酸性等的涂膜,并且具有优异的低温固化性,储存稳定性和重涂性。