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    1.
    发明专利
    未知

    公开(公告)号：DE1260145B

    公开(公告)日：1968-02-01

    申请号：DEB0080384

    申请日：1965-02-05

    Applicant: BASF AG

    Inventor： SLIWKA DR WOLFGANG ,  GELLRICH DR MANFRED

    IPC: C08F2/08 ,  C08F2/18 ,  C08F2/20 ,  C08F2/22 ,  C08F261/04 ,  C08F1/13

    Abstract: 1,129,974. Coating. BADISCHE ANILIN - & SODA-FABRIK A.G. 4 Feb., 1966 [5 Feb., 1965], No. 4948/66. Heading B2E [Also in Division C3] Substrates may be coated with aqueous dispersions of vinyl ester polymers prepared by polymerising vinyl esters in the presence of catalysts and modified polyvinyl alcohols which are saponification products of copolymers of 90 to 99.9 weight per cent of a vinyl ester of a C 1-3 aliphatic saturated monocarboxylic acid and 0.1 to 10 weight per cent of a vinyl ester of a C 4-20 aliphatic saturated monocarboxylic acid in which the carboxylic group is α to a tertiary or quarternary carbon atom. In an example cardboard is coated with a dispersion of polyvinyl propionate prepared in the presence of a saponified vinyl acetate/vinyl 2,2,4,4- tetramethyl valerate copolymer, said dispersion being mixed with a paste of lithopone in aqueous ammonium polyacrylate solution.

    6.
    发明专利
    未知

    公开(公告)号：DE1570312A1

    公开(公告)日：1970-02-05

    申请号：DE1570312

    申请日：1965-10-29

    Applicant: BASF AG

    Inventor： POHLEMANN DR HEINZ ,  FLORUS DR GERHARD ,  SLIWKA DR WOLFGANG ,  GELLRICH DR MANFRED

    IPC: C08F2/18 ,  C08F2/20 ,  C08F2/22 ,  C08F212/08 ,  C08F220/12

    Abstract: 1,155,275. Styrene/acrylate and/or methacrylate copolymers. BADISCHE ANILIN- & SODA FABRIK A.G. 28 Oct., 1966 [29 Oct., 1965], No. 48419/66. Heading C3P. Polymer dispersions are produced by copolymerizing styrene with 5-95% of esters of acrylic and/or methacrylic acid with C 1-8 alcohols in an aqueous medium in the presence of catalysts and emulsifiers, 0À01-2% of a protective colloid being gradually added after 20-80/) of the monomers have been copolymerized, and then completing the copolymerization. The esters may be ethyl, n- or tert-butyl, 2-ethylhexyl or cyclohexyl acrylate and/or methyl or butyl methacrylate. The copolymer may also include acrylic acid, acrylamide, methacrylamide, methyl vinyl carbinol, or vinyl sulphonic acid. Polyvinyl methyl ether may be present during the polymerization. The protective colloid may be a polyvinyl alcohol, which may be acetalized with n-butyraldehyde and completely hydrolysed, a hydroxyethyl cellulose, an ammoniacal solution of polyacrylic acid or a copolymer of acrylic acid/acrylamide/ acrylonitrile/methyl acrylate. The emulsifier may be the sodium salt of the sulphonated nonyl-phenol/ethylene oxide, ethylene oxide/noctylphenol, sodium vinyl sulphonate or propylene oxide/ethylene oxide. The catalyst may be potassium persulphate.

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