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    6.
    发明专利
    未知

    公开(公告)号：AT258107B

    公开(公告)日：1967-11-10

    申请号：AT855963

    申请日：1963-10-25

    Applicant: BASF AG

    Inventor： POHLEMANN HEINZ DR ,  HASSE KARL DR ,  REINBOLD IMMO DR ,  BRUENING DIETHELM DR

    IPC: C08F2/18 ,  D21H19/58

    Abstract: Compositions for coating paper comprise an aqueous polymer dispersion, one or more pigments starch and/or casein, and optionally other additives, said dispersion containing: (i) a copolymer of 40 to 70 parts by weight of styrene, 3 to 60 parts by weight of at least one ester of acrylic acid with an alcohol having 2 to 12 carbon atoms and 0.5 to 5 parts by weight of methacrylamide; and (ii) an emulsifier mixture comprising (a) a sulphated reaction product of 1 mole of at least one (C6- 20-alkyl)-pheno with at least 9 moles of ethylene oxide and/or propylene oxide; and (b) at least one emulsifier which is a reaction product of 1 mole of a compound containing a hydroxyl, carboxyl or amide group with at least 10 moles of ethylene oxide. Suitable as emulsifiers (b) are ethoxylated fatty acids or amides or ethoxylated alcohols having at least 10 carbon atoms in the acid, amide or alcohol moiety, and also ethoxylated alkylphenols. As pigments there are specified kaolin, china clay, barium sulphate, calcium carbonate and titanium dioxide. Pigment dispersing agents may also be present e.g. polyacrylic acid salts, maleic acid copolymer salts (e.g. copolymers with styrene, vinyl ethers and isobutylene), salts of partly esterified maleic acid copolymers and high molecular weight polyphosphates including sodium hexameta phosphate. Other optional ingredients include optical brighteners, dyes antifroth agents, waxes and plasticizers (al unspecified). In examples, the copolymers used are copolymers of styrene and methacrylamide with ethyl, n-butyl, isobutyl, 2-ethylhexyl, dodecyl or isobutyl/2-ethyl hexyl acrylate. In one example, a sturene-isobutyl acrylate-methacrylamide copolymer dispersion is prepared by emulsion polymerization of the appropriate monomers using potassium persulphate catalyst, part of the monomer emulsion being added during polymerization.ALSO:Paper is coated with a composition which comprises an aqueous polymer dispersion, one or more pigments, starch and/or casein, and optionally other additives, said dispersion containing:- (i) a copolymer of 40 to 70 parts by weight of styrene, 30 to 60 parts by weight of at least one ester of acrylic acid with an alcohol having 2 to 12 carbon atoms and 0.5 to 5 parts by weight of methacrylamide and (ii) an emulsifier mixture comprising (a) a sulphated reaction product of 1 mole of at least one (C6 - 20 alkyl)-phenol with at least 9 moles of ethylene oxide and/or propylene oxide and (b) at least one emulsifier which is a reaction product of 1 mole of a compound containing a hydroxyl, carboxyl or amide group with at least 10 moles of ethylene oxide. Suitable as emulsifiers (b) are ethoxylated fatty acids or amides or ethoxylated alcohols having at least 10 carbon atoms in the acid, amide or alcohol moiety, and also ethoxylated alkylphenols. As pigments there are specified kaolin, china, clay, barium sulphate, calcium carbonate and titanium dioxide. Pigment dispersing agents may also be present e.g. polyacrylic acid salts, malcic acid copolmer salts, salts of partly esterified malcic acid copolymers and high molecular weight polyphosphates including sodium hexametaphosphate. Other optional ingredients include optical brighteners, dyes, antifroth agents, waxes and plasticisers (all unspecified). The compositions are suitable for coating paper with conventional applicator equipment, e.g. roll coaters and doctor blades.

    7.
    发明专利
    未知

    公开(公告)号：DE2208895A1

    公开(公告)日：1973-09-06

    申请号：DE2208895

    申请日：1972-02-25

    Applicant: BASF AG

    Inventor： STANGER BERND DR ,  MUELLER ALFRED DR ,  BECKER HANS-WERNER DR ,  REINBOLD IMMO DR ,  DISTLER HARRY DR

    IPC: C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F2/26 ,  C08F4/00 ,  C09K23/20 ,  D06M15/233 ,  D21H17/34 ,  C08F1/13

    Abstract: 1412203 Emulsion polymerization BADISCHE ANILIN- & SODA-FABRIK AG 23 Feb 1973 [25 Feb 1972] 8941/73 Heading C3P The emulsion polymerization of ethylenically unsaturated monomers is effected using as emulsifier a sulphonium salt of the formula in which X is hydrogen or methyl and R 1 to R 3 are #-hydroxyalkyl, alkyl or aralkyl groups containing a total of 10-25 carbons provided at least one is #-hydroxyalkyl, or an oxidation product of such a sulphonium salt. In examples the following monomers are copolymerized (1) vinylidene chloride/ethyl acrylate, (2) nbutyl acrylate / acrylonitrile / styrene / N,N- dimethyl aminoethyl acrylate (in sulphuric acid) and (3) vinylidene chloride/n-butyl acrylate / N - vinyl - N - methylimidazolium methosulphate.

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