Chromium-free, metal surface-treating composition and surface-treated metal sheet
    61.
    发明公开
    Chromium-free, metal surface-treating composition and surface-treated metal sheet 失效
    Chromfreie Zusammensetzung zur Behandlung vonMetalloberflächen

    公开(公告)号:EP0787830A2

    公开(公告)日:1997-08-06

    申请号:EP97101530.0

    申请日:1997-01-31

    IPC分类号: C23C22/06 C23C22/07

    摘要: Disclosed are Cr-free composition for treating metal surface comprising (a) a hydroxyl group-containing organic resin, (b) a phosphoric acid and (c) at least one of ions and compounds of at least one metal selected from the group consisting of Cu, Co, Fe, Mn, Sn, V, Mg, Ba, Al, Ca, Sr, Nb, Y and Zn, and optionally (d) at least one of colloids (sol) or powders of SiO 2 , SnO 2 , Cr 2 O 3 , Fe 2 O 3 , Fe 3 O 4 , MgO, ZrO 2 , Al 2 O 3 and Sb 2 O 5 ; as well as a metal sheet or metal article having thereon (i) a coating film of the Cr-free composition and optionally (ii) a coating film of a coating composition comprising an organic resin and if desired a colloid (sol) or a powder.

    摘要翻译: 公开了用于处理金属表面的无Cr组合物,其包含(a)含羟基的有机树脂,(b)磷酸和(c)至少一种离子和至少一种选自以下的金属的化合物: Cu,Co,Fe,Mn,Sn,V,Mg,Ba,Al,Ca,Sr,Nb,Y和Zn,以及任选的(d)至少一种胶体(sol)或SiO 2,SnO 2, Fe2O3,Fe3O4,MgO,ZrO2,Al2O3和Sb2O5; 以及金属片或金属制品,其上具有(i)无Cr组合物的涂膜和任选地(ii)包含有机树脂的涂料组合物的涂膜,如果需要,胶体(溶胶)或粉末 。

    Anticorrosion coating composition
    68.
    发明公开
    Anticorrosion coating composition 失效
    防腐Überzugszusammensetzung。

    公开(公告)号:EP0468883A1

    公开(公告)日:1992-01-29

    申请号:EP91402054.0

    申请日:1991-07-24

    IPC分类号: C09D5/08 C23C22/32

    CPC分类号: C23C22/74 C09D5/10

    摘要: An improved anticorrosion coating composition is disclosed. The composition is characterized in that in the known anticorrosion coating composition comprising a chromic acid compound or a chromic acid compound and a boric acid compound, a powder of zinc, aluminum of an alloy of a mixture thereof, a (poly)glycol compound and solvent, a part of chromic acid compound ingredient is replaced by a water-soluble nickel and/or cobalt compound. The composition exhibits a better corrosion protection performance in more severe corrosion environment than the known anticorrosion coating composition with lesser content of harmful hexavalent chromium.

    摘要翻译: 公开了一种改进的防腐涂料组合物。 该组合物的特征在于,在已知的包含铬酸化合物或铬酸化合物和硼酸化合物的防腐涂料组合物中,其混合物的合金的锌,铝粉末,(聚)二醇化合物和溶剂 ,一部分铬酸化合物成分被水溶性镍和/或钴化合物代替。 该组合物在比具有较少含量的有害六价铬的已知防腐涂料组合物更恶劣的腐蚀环境中表现出更好的防腐蚀性能。

    Method for improving magnesium oxide steel coatings
    70.
    发明公开
    Method for improving magnesium oxide steel coatings 失效
    改善氧化镁涂层的方法

    公开(公告)号:EP0272867A3

    公开(公告)日:1990-06-20

    申请号:EP87311032.4

    申请日:1987-12-15

    发明人: Howe, Michael W.

    IPC分类号: C21D8/12 C21D1/70

    摘要: This invention is directed to improved magnesium oxide slurries for use in coating silicon steels prior to high temperature annealing, comprising a calcination-modified magnesium oxide and water. Inorganic salts of barium, chromium, silicon, zinc or aluminum are added to magnesium hydroxide prior to calcination, resulting in a calcined magnesium oxide product having improved properties. This invention is also directed to an improved process for coating silicon steel, using the above described improved magnesium oxide product.