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    PAINT BONDING AGENT BASED ON COPOLYMER CONTAINING MASKED ISOCYANATE GROUP AND USE OF SAID COPOLYMER FOR ANODE ELECTRODEPOSITION PAINTING
    3.
    发明专利
    PAINT BONDING AGENT BASED ON COPOLYMER CONTAINING MASKED ISOCYANATE GROUP AND USE OF SAID COPOLYMER FOR ANODE ELECTRODEPOSITION PAINTING 失效

    公开(公告)号：JPS573866A

    公开(公告)日：1982-01-09

    申请号：JP6709181

    申请日：1981-05-06

    Applicant: BASF AG

    Inventor： YURUGEN GIMUPERU ,  KAARUUHAINTSU FUOIAAHEERUTO ,  HANSUUUUBUE SHIENKU

    IPC: C08F26/00 ,  C08F246/00 ,  C08G18/08 ,  C08G18/72 ,  C08L33/00 ,  C09D5/44 ,  C09D175/00 ,  C25D13/06

    Abstract: Surface-coating binders based on a copolymer which contains carboxyl groups, blocked isocyanate groups, hydroxyl groups and ether groups, and which, due to partial or complete salification with ammonia or with an organic base, is water-soluble or water-dispersible. This copolymer contains, as copolymerized units, one or more alpha , beta -olefinically unsaturated carboxylic acids of 3 to 5 carbon atoms or one or more half-esters of an alpha , beta -olefinically unsaturated dicarboxylic acid of 3 to 5 carbon atoms, an N-(1-alkenyl) isocyanate blocked with a CH-, OH- or NH-acidic blocking agent, an adduct of an epoxy resin, based on bisphenol A and epichlorohydrin and having a molecular weight of from 380 to 3,500, with an olefinically unsaturated alcohol of 3 to 20 carbon atoms, and one or more other copolymerizable olefinically unsaturated compounds, and has a mean molecular weight of from 1,000 to 20,000 and an acid number of from 35 to 150 mg of KOH/g. The novel surface-coating binder is useful for the anodic electrocoating of metallic articles.

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