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    • 80. 发明授权
    • Process for coating heat resistant substrates with two component stoving
compositions
    • 用双组分烘干组合物涂覆耐热基材的方法
    • US5304400A
    • 1994-04-19
    • US821093
    • 1992-01-15
    • Rolf DheinKnud ReuterBurkhard KohlerRainer RettigLothar Backer
    • Rolf DheinKnud ReuterBurkhard KohlerRainer RettigLothar Backer
    • B05D3/02B05D5/00B05D7/02B05D7/06B05D7/14B05D7/24C08G18/08C08G18/62C08K5/29C09D5/02C09D133/02C09D133/04C09D133/06C09D175/04
    • C08G18/6254C08G18/0819C08K5/29
    • The present invention relates to a process for preparing a coated, heat resistant substrate byI) coating the substrate with a coating composition containinga) a solution or dispersion containinga1) 100 parts by weight of at least one hydroxyl-functional polyacrylate resin in dissolved or dispersed form, wherein the resin has a hydroxyl value of 15 to 200 mg KOH/G solid resin, an acid value of 5 to 250 mg KOH/G solid resin and a total content of chemically incorporated carboxylate and/or sulfonate groups of 8 to 450 milliequivalents per 100 g of solids,a2) 25 to 395 parts by weight of water anda3) 5 to 125 parts by weight of at least one organic solvent having a boiling point or boiling range at 1013 mbar of 100 to 300.degree. C. andb) at least one organic polyisocyanate in a quantity corresponding to an equivalent ratio of isocyanate groups of component b) to isocyanate-reactive groups of component a1) of 0.7:1 to 3:1, andII) curing the coating composition at a temperature of 40 toThe present invention is also directed to the coated substrates obtained by this process.
    • 本发明涉及一种制备涂层耐热基材的方法,其方法是用涂料组合物涂覆基材,所述涂料组合物含有:a)含有a1)100重量份的至少一种羟基官能的聚丙烯酸酯树脂溶解的溶液或分散体 或分散形式,其中所述树脂的羟值为15-200mg KOH / G固体树脂,酸值为5至250mg KOH / G固体树脂,并且化学掺入的羧酸盐和/或磺酸盐基团的总含量为8 每100g固体为450毫当量,a2)25至395重量份的水和a3)5至125重量份的至少一种沸点或沸点范围为1013毫巴的有机溶剂为100至300摄氏度 和b)至少一种有机多异氰酸酯,其量对应于组分b)的异氰酸酯基团与组分a1)的异氰酸酯反应性基团的当量比为0.7:1至3:1,和II)使涂料组合物固化 温度为40℃ 本发明还涉及通过该方法获得的涂布基材。