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    • 4. 发明授权
    • Coating composition and coated article
    • 涂料组合物和涂层制品
    • US4450200A
    • 1984-05-22
    • US408843
    • 1982-08-17
    • Susumu IwatoTatuo NakamuraTakeo Kurauchi
    • Susumu IwatoTatuo NakamuraTakeo Kurauchi
    • C08K3/30C08K3/34C09D161/20C09D167/00B32B5/16B32B15/08
    • C08K3/34C08K3/30C09D161/20C09D167/00Y10T428/25Y10T428/259Y10T428/31681Y10T428/31786
    • A composition forming coated films having an excellent chipping resistance, containing:A. at least one polyester resin derived from (1) at least one acid component selected from the group consisting of dibasic acids and derivatives thereof and (2) at least one alcohol component selected from the group consisting of polyhydric alcohols and derivatives thereof; andB. at least one aminoplast resin having a number-average molecular weight of 800 to 1400,The polyester resin containing at least 20% by weight of the acid component being an aliphatic dibasic acid having 4 to 10 carbon atoms and at least 20% by weight of the alcohol component being a dihydric alcohol having 2 to 6 carbon atoms, the polyester resin having a number-average molecular weight of 2000 to 4000, a hydroxyl number of 30 to 75 and an acid number of 5 to 15.The weight ratio of the polyester resin to the aminoplast resin is 60/40 to 95/5. The coated film of the coating composition has an elongation of 20% to 100% and a static glass transition temperature of -10.degree. C. to 20.degree. C.This coating composition also contains 2% to 20% by weight of ultrafine talc powder, 2% to 40% by weight of ultrafine barium sulfate powder or 2% to 40% by weight of a mixture of ultrafine talc and ultrafine barium sulfate, each based on the total solid amount of the coating composition.
    • 一种形成具有优异耐崩裂性的涂膜的组合物,其含有:A.至少一种聚酯树脂,其衍生自(1)至少一种选自二元酸及其衍生物的酸组分和(2)至少一种醇组分 选自多元醇及其衍生物; 和B.至少一种数均分子量为800〜1400的氨基塑料树脂。所述聚酯树脂含有至少20重量%的酸成分是具有4至10个碳原子的脂族二元酸和至少20重量% 的醇组分是具有2至6个碳原子的二元醇,该聚酯树脂的数均分子量为2000〜4000,羟值为30〜75,酸值为5〜15。重量 聚酯树脂与氨基塑料树脂的比例为60/40至95/5。 涂料组合物的涂膜具有20%至100%的伸长率和-10℃至20℃的静态玻璃化转变温度。该涂料组合物还含有2重量%至20重量%的超细滑石粉, 2重量%至40重量%的超细硫酸钡粉末或2重量%至40重量%的超细滑石和超细硫酸钡的混合物,各自基于涂料组合物的总固体量。