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    • 30. 发明公开
    • DETERGENT FOR METALLIC PRODUCT
    • DETERGENSFÜRMETALLISCHES PRODUKT
    • EP1452582A4
    • 2005-07-27
    • EP01981049
    • 2001-11-09
    • SAKURAI JIRO
    • SAKURAI JIROSUGIMOTO TAKESHI
    • C11D3/02C11D7/08C11D7/26C11D7/34C11D11/00
    • C11D3/042C11D7/08C11D7/265C11D7/34C11D11/0029
    • A cleaning agent of sulfamic acid-hydroxycarboxylic acid system is provided, which has the capability of preventing metal elution from metal products to be cleaned and hydrogen embrittlement of the metal products. This cleaning agent comprises sulfamic acid and at least one of hydroxycarboxylic acids, and a compounding ratio (weight ratio) of sulfamic acid : at least one of hydroxycarboxylic acids is (60 SIMILAR 95) : (40 SIMILAR 5), and preferably (80 SIMILAR 95) : (20 SIMILAR 5). In particular, when citric acid and malic acid are used as the hydroxycarboxylic acids, and a compounding ratio (weight ratio) of sulfamic acid : citric acid : malic acid is (80 SIMILAR 95) : (10 SIMILAR 2.5) : (10 SIMILAR 2.5), it is possible to provide excellent performance in preventing metal elution and hydrogen embrittlement as well as high detergency.
    • 提供氨基磺酸 - 羟基羧酸系统的清洗剂,其具有防止金属洗涤金属洗涤和金属产品氢脆性的能力。 该清洗剂包含氨基磺酸和至少一种羟基羧酸,以及氨基磺酸的配合比例(重量比):至少一种羟基羧酸为(60〜95):(40〜5),优选为(80〜 95):( 20类5)。 特别是当使用柠檬酸和苹果酸作为羟基羧酸时,氨基磺酸:柠檬酸:苹果酸的配合比(重量比)为(80〜95):(10〜2.5):( 10〜2.5) ),可以提供优异的防止金属洗脱和氢脆性能以及高洗涤性能。