Treating metal surfaces with two polymers, useful e.g. for temporary corrosion protection, one based on heterocylic monomer containing nitrogen and the other containing acid groups

    公开(公告)号:DE102005015478A1

    公开(公告)日:2006-10-05

    申请号:DE102005015478

    申请日:2005-04-04

    Applicant: BASF AG

    Abstract: Method for treating a metal surface (S) with a formulation (F) containing at least water (or an aqueous solvent mixture) and at least two different polymers (A) and (B). Method for treating a metal surface (S) with a formulation (F) containing at least water (or an aqueous solvent mixture) and at least two different polymers (A) and (B). (A) comprises, by weight, 50-100% monoethylenically unsaturated monomer (A1) that includes a 5-7 membered N-heterocycle with 1-3 N atoms and/or its salt, and 0-50% a second, different ethylenically unsaturated monomer (A2). (B) comprises, by weight, 50-95% monoethylenically unsaturated hydrocarbon (B1); 5-50% monoethylenically unsaturated monomer (B2) containing acid (or its anhydride or salt) groups; and 0-10% of a different ethylenically unsaturated monomer (B3). The total of (A) and (B) is at least 70wt.% of the total formulation (free of water or solvent mixture). An independent claim is included for a metal surface coated with (F).

    6.
    发明专利
    未知

    公开(公告)号:DE102005027568A1

    公开(公告)日:2006-12-21

    申请号:DE102005027568

    申请日:2005-06-14

    Applicant: BASF AG

    Abstract: Process for the passivation of metallic surfaces, in particular of strip metals, by treatment of the surface with an acidic, aqueous preparation which comprises at least one water-soluble acid group-containing polymer and at least one wax.

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