11.
    发明专利
    未知

    公开(公告)号:DE1546840A1

    公开(公告)日:1971-02-18

    申请号:DE1546840

    申请日:1965-02-27

    Applicant: BASF AG

    Abstract: 1,132,267. Electrolytic coating compositions. BADISCHE ANILIN- & SODA-FABRIK A.G. 25 Feb., 1966 [27 Feb., 1965], No. 8333/66. Headings C3P and C3R. [Also in Division C7] Aqueous solutions or dispersions of salts of bakable basic nitrogen cationic polymers used for electrophoretic coating) comprise on a weight basis a copolymer derived from, (1) 3 to 30% of aminoalkyl acrylates and/or methacrylates; (2) 3 to 30% of amides, N-alkylamides, N- hydroxyalkylamides and/or N-oxaalkylamides of acrylic and/or methacrylic acid; (3) 40 to 94% of alkyl acrylates and/or methacrylates and/or styrene and/or alkylvinyl benzenes; and (4) 0 to 30% of other copolymerizable ethylenically unsaturated monomers. Component (4) may be, for example, an hydroxyalkyl acrylate or methacrylate, an aliphatic vinyl carboxylate ester, acrylonitrile, methacrylonitrile, or a trialkylammoniumalkyl acrylate or methacrylate salt. Other watersoluble or water-dispersible binders capable of electrophoretic co-deposition with the copolymer salts may be added in an amount of 10 to 70% of said salts by weight, e.g. aminoplasts, phenoplasts, epoxide resins, alkyd resins or mixtures thereof. In one example an 8% solids solution of pH 4À5 is obtained by diluting the copolymer salt solution obtained by adding acetic acid to a solution formed by solution polymerization of mono - (N,N - diethylamine) - ethyl methacrylate, N-2-oxa-4-methylpentylamide of methacrylic acid, and n- and tert-butyl acrylates in n-butanol and p-xylene. In another example acrylamide is used instead of the above amide and 4-hydroxybutyl acrylate is also included, together with TiO 2 pigment and a watersoluble melamine- or phenol-formaldehyde resin. A further example employs a copolymer derived from γ - (N :N - diethylamino) - propyl acrylate, 2 - oxapropylacrylamide, 2 - ethylhexyl methacrylate, styrene, p-vinyl toluene and acrylonitrile.

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