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    • 2. 发明授权
    • Coating composition and method for producing precoated steel sheets
    • 涂层组合物及其制备方法
    • US6018013A
    • 2000-01-25
    • US139001
    • 1998-08-24
    • Keiji YoshidaTakashi AnyashikiKazumi Itou
    • Keiji YoshidaTakashi AnyashikiKazumi Itou
    • C08G18/42C09D175/06
    • C09D175/06C08G18/4225C08G18/4227C08G18/423C08G18/4244Y10T428/31605
    • This invention relates to a coating composition for precoated steel sheets which are required to have high hardness, high workability and high distinctness of image, and to a method for producing a precoated steel sheet having a coating film of the composition. The composition is prepared by adding a compound of any of the following (a) to (c) to a coating composition consisting essentially of a polyol and containing, as the curing agent, an isocyanate compound or an amino resin, and the coating film of the composition has both high-level workability and high-level hardness.(a) Polyester compounds comprising main repeating units of a general formula (1): ##STR1## wherein n is an integer; and R is an alkylene group having 10 or less carbon atoms, or a 1,4-cyclohexylene-dimethylene group, or a neopentylene group, or a polyoxyalkylene group.(b) Polyester compounds comprising main repeating units of a general formula (2): ##STR2## wherein n is an integer of 10 or less; and R is an alkylene group having 10 or less carbon atoms, or a 1,4-cyclohexylene-dimethylene group, or a neopentylene group.(c) Compounds having the structure of a general formula (3):HO--(CH.sub.2).sub.n --O--R--O--(CH.sub.2).sub.n --OH (3)wherein n is an integer of from 2 to 10; and R is ##STR3##
    • 本发明涉及要求具有高硬度,高加工性和高清晰度的预涂钢板用涂料组合物,以及具有该组合物涂膜的预涂钢板的制造方法。 通过将以下(a)〜(c)中任一项所述的化合物添加到基本上由多元醇组成的涂料组合物中,作为固化剂含有异氰酸酯化合物或氨基树脂, 该组合物具有高水平的可加工性和高水平的硬度。 (a)包含通式(1)的主要重复单元的聚酯化合物:其中n是整数; R为碳原子数为10以下的亚烷基,1,4-亚环己基 - 二亚甲基,新戊烯基或聚氧化烯基。 (b)包含通式(2)的主要重复单元的聚酯化合物:其中n为10以下的整数; R为碳原子数为10以下的亚烷基或1,4-亚环己基 - 二亚甲基或新戊烯基。 (c)具有通式(3)结构的化合物:HO-(CH2)n-O-R-O-(CH2)n-OH(3)其中n为2至10的整数; 和R是
    • 5. 发明授权
    • Coating composition and method for producing precoated steel sheets
    • 涂层组合物及其制备方法
    • US5817731A
    • 1998-10-06
    • US707249
    • 1996-09-03
    • Kenji YoshidaTakashi AnyashikiKazumi ItouShouichi Oosuka
    • Kenji YoshidaTakashi AnyashikiKazumi ItouShouichi Oosuka
    • C09D161/32C08G18/42C09D161/20C09D167/00C09D167/02C09D175/06C08G18/80
    • C08G18/4244C08G18/4225C08G18/4227C08G18/423C09D175/06Y10T428/31605Y10T428/31609
    • This invention relates to a coating composition for precoated steel sheets which are required to have high hardness, high workability and high distinctness of image, and to a method for producing a precoated steel sheet having a coating film of the composition. The composition is prepared by adding a compound of any of the following (a) to (c) to a coating composition consisting essentially of a polyol and containing, as the curing agent, an isocyanate compound or an amino resin, and the coating film of the composition has both high-level workability and high-level hardness. (a) Polyester compounds comprising main repeating units of a general formula (1): ##STR1## wherein n is an integer; and R is an alkylene group having 10 or less carbon atoms, or a 1,4-cyclohexylene-dimethylene group, or a neopentylene group, or a polyoxyalkylene group. (b) Polyester compounds comprising main repeating units of a general formula (2): ##STR2## wherein n is an integer of 10 or less; and R is an alkylene group having 10 or less carbon atoms, or a 1,4-cyclohexylene-dimethylene group, or a neopentylene group. (c) Compounds having the structure of a general formula (3): HO--(CH.sub.2).sub.n --O--R--O--(CH.sub.2).sub.n --OH (3) wherein n is an integer of from 2 to 10; and R is ##STR3##
    • 本发明涉及要求具有高硬度,高加工性和高清晰度的预涂钢板用涂料组合物,以及具有该组合物涂膜的预涂钢板的制造方法。 通过将以下(a)〜(c)中任一项所述的化合物添加到基本上由多元醇组成的涂料组合物中,作为固化剂含有异氰酸酯化合物或氨基树脂, 该组合物具有高水平的可加工性和高水平的硬度。 (a)包含通式(1)的主要重复单元的聚酯化合物:其中n是整数; R为碳原子数为10以下的亚烷基,1,4-亚环己基 - 二亚甲基,新戊烯基或聚氧化烯基。 (b)包含通式(2)的主要重复单元的聚酯化合物:其中n为10或更小的整数; R为碳原子数为10以下的亚烷基或1,4-亚环己基 - 二亚甲基或新戊烯基。 (c)具有通式(3)结构的化合物:HO-(CH2)n-O-R-O-(CH2)n-OH(3)其中n为2至10的整数; 而R是