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    Stable cation-active plastic dispersions and a process for their production
    22.
    发明专利
    Stable cation-active plastic dispersions and a process for their production 未知

    公开(公告)号：GB897804A

    公开(公告)日：1962-05-30

    申请号：GB4111960

    申请日：1960-11-30

    Applicant: BASF AG

    Inventor： FIKENTSCHER HANS ,  HERRLE KARL ,  WINTER GERNOT ,  MUELLER ALFRED ,  REICH JOHANN GEORGE ,  VOSS HEINZ

    IPC: C08F2/22 ,  C08F2/28 ,  C08F4/12 ,  C08F26/06 ,  C08F28/00 ,  D21H17/45

    Abstract: A stable cation-active plastic dispersion is prepared by copolymerizing, an ethylenically unsaturated compound difficultly soluble in water, in an aqueous dispersion containing cation-active dispersing agents with 1 to 50% of the total amount of monomers, of a N- or C- vinyl substituted aromatic compound which contains at least one quaternary nitrogen atom in the nucleus or in a side chain. A non-ionic dispersing agent may also be present. Specified ethylenically unsaturated compounds are acrylic and methacrylic esters from methyl to stearyl; vinyl esters from acetate to stearate, acrylonitrile and methacrylonitrile, vinyl chloride, vinyl fluoride, vinylidene chloride, styrene, orthochlorostyrene, alpha-methyl styrene, vinyl toluenes, mixtures of these monomers with each other or with butadiene, chloroprene, isoprene, vinyl isobutyl ether or the methyl to butyl diesters of maleic or fumaric acids; up to 10% of a water-soluble non-ionic vinyl compound, e.g. acrylamide and methacrylamide or vinyl pyrrolidene may also be present. Specified comonomers include 1-methyl-2-vinyl pyridinium bromide and methosulphate, 2-vinyl pyridium ethyl sulphate, 1-benzyl-4-vinyl-quinolinium chloride, N-vinyl-n1-methyl imidazolium bromide and methosulphate, and N,N,N-trimethyl-N-(4-vinylbenzyl) ammonium chloride. Specified cation-active dispersing agents include the water-soluble salts of fatty amines and hydroxyethylated fatty amines with lower aliphatic carboxylic acids or inorganic acids while specified non-ionic dispersing agents include hydroxyethylation products of fatty alcohols and phenols. Cation-active protective colloids such as polyvinylpyridinium salts or polyvinylimadazolium salts may also be used. The copolymerization process may take place in aqueous dispersion using persulphates, percarbonates or, preferably, hydrogen peroxide. Small amounts of water-soluble salts of iron, cobalt, copper and nickel may be present.

    23.
    发明专利
    未知

    公开(公告)号：FR1274690A

    公开(公告)日：1961-10-27

    申请号：FR839539

    申请日：1960-09-26

    Applicant: BASF AG

    Inventor： FIKENTSCHER HANS ,  HERRLE KARL ,  SCHLEMMER LOTHAR ,  WAGNER HERBERT

    IPC: B29C47/88 ,  B29C71/00 ,  B29D7/00 ,  B29D7/01

    Abstract: Cast films of polyvinyl chloride, or copolymers containing a major proportion thereof, are drawn from the casting support while still containing solvent and after-dried at 150 DEG -300 DEG C., while held only at the sides, to produce a practically solvent-free film. As shown, the sides of the film may be applied to two endless spiked bands or clamp chains c (Fig. 1), by pressure rollers b, and dried in the heated chamber d. Alternatively (Fig. 2), the sides of the film may be applied by deflecting rollers b1 to two driving discs a1, on which the film is held by an endless wire cable or chain c1, and the film subsequently dried in chamber d1. Conventional heating means are used. By leading the spiked bands or clamp chains apart or by canting the discs a1, the film may be stretched transversely during drying. Films so made have a high gloss and are suitable for packaging. Examples describe the preparation of films from solutions in tetrahydrofurane, and in acetone-toluene mixtures.

    26.
    发明专利
    未知

    公开(公告)号：DK151814C

    公开(公告)日：1988-06-06

    申请号：DK369575

    申请日：1975-08-15

    Applicant: BASF AG

    Inventor： HERRLE KARL ,  DENZINGER WALTER ,  SEELERT KURT ,  SCHWARZ WOLFGANG

    IPC: A61K31/18 ,  A61K31/785 ,  A61K31/79 ,  A61K33/18 ,  C08F8/00 ,  C08F8/20 ,  C08F126/10 ,  C08F8/22

    Abstract: Polyvinylpyrrolidone-iodine, manufactured by reaction of iodine and a polyvinylpyrrolidone obtained by polymerization in an anhydrous organic solvent in the presence of a source of free radicals and optionally in the presence of a heavy metal of atomic number from 23 to 29, in the form of a complex compound or of a salt with an organic acid, as a co-activator, followed by steam distillation of this polyvinylpyrrolidone, if appropriate. The PVP-iodine of the invention is very stable and can be used as a disinfectant.

    Continuous emulsion polymerization
    28.
    发明专利
    Continuous emulsion polymerization 未知

    公开(公告)号：GB1124610A

    公开(公告)日：1968-08-21

    申请号：GB5536365

    申请日：1965-12-31

    Applicant: BASF AG

    Inventor： HERRLE KARL ,  BAUMAN KARL HEINZ ,  BECKMANN WILHELM ,  HEIL EDUARD

    IPC: B01J10/00 ,  B01J19/24 ,  C08F2/00 ,  C08F2/22

    Abstract: A process for the continuous emulsion polymerization of conventional olefinically unsaturated monomers which are practically insoluble or at most partly soluble in water, in aqueous medium in the presence of conventional polymerization catalysts, comprises continuous supplying monomers exclusively in the form of a preformed aqueous emulsion through a tube in an upward flow at a flow velocity of 5 to 100 cm. per sec. to the lower part of a vertically arranged circulation system, blending with an excess of polymer dispersion which has already formed, and polymerizing in the circulation system without the use of mechanical stirrers to a mean conversion of more than 75%, the polymer dispersion being withdrawn at a point not higher than the point of entry of the monomer emulsion into the circulation system and at the same rate as the monomer emulsion is supplied. Optional process features include preblending of monomer with polymer, a temperature difference between ascending and descending parts, bubbling inert gas through the ascending part, boiling the ascending dispersion with the aid of reduced pressure, and complex circulation systems. In examples, monomers polymerized are: (1) butyl acrylate-acrylic acid, (2) and (3) methyl methacrylate in the presence of dispersed polymethyl methacrylate, (4) and (5) butyl acrylate-vinyl acetate-acrylic acid, (6) and (7) vinyl propionate-sodium vinyl sulphonate, (8) styrene-acrylic acid-acrylonitrile, (9) vinylidene chloride-acrylonitrile-methacrylamide and (10) butyl acrylate-vinyl acetate-sodium vinyl sulphonate-acrylic acid; the catalyst being potassium persulphate or azodiisobutyronitrile and the emulsifier being selected from dodecylbenzene sulphonate, C10-C16-alkyl sulphonate, polyethoxylated octadecyl alcohol, turkey red oil and sodium salt of sulphochlorinated paraffins. The process can also be applied using other monomers such as ethyl acrylate, vinyl pivalate, vinyl chloride, methacrylic acid, acrylamide and N-methylolmethacrylamide; and with other catalysts, e.g. hydrogen peroxide, ammonium persulphate, benzoyl peroxide and dialkyl percarbonates.

    30.
    发明专利
    未知

    公开(公告)号：FR1466640A

    公开(公告)日：1967-01-20

    申请号：FR44468

    申请日：1965-12-31

    Applicant: BASF AG

    Inventor： HERRLE KARL ,  BAUMANN KARL HEINZ ,  BECKMANN WILHELM ,  HEIL EDUARD

    IPC: B01J10/00 ,  B01J19/24 ,  C08F2/00 ,  C08F2/22

    Abstract: A process for the continuous emulsion polymerization of conventional olefinically unsaturated monomers which are practically insoluble or at most partly soluble in water, in aqueous medium in the presence of conventional polymerization catalysts, comprises continuous supplying monomers exclusively in the form of a preformed aqueous emulsion through a tube in an upward flow at a flow velocity of 5 to 100 cm. per sec. to the lower part of a vertically arranged circulation system, blending with an excess of polymer dispersion which has already formed, and polymerizing in the circulation system without the use of mechanical stirrers to a mean conversion of more than 75%, the polymer dispersion being withdrawn at a point not higher than the point of entry of the monomer emulsion into the circulation system and at the same rate as the monomer emulsion is supplied. Optional process features include preblending of monomer with polymer, a temperature difference between ascending and descending parts, bubbling inert gas through the ascending part, boiling the ascending dispersion with the aid of reduced pressure, and complex circulation systems. In examples, monomers polymerized are: (1) butyl acrylate-acrylic acid, (2) and (3) methyl methacrylate in the presence of dispersed polymethyl methacrylate, (4) and (5) butyl acrylate-vinyl acetate-acrylic acid, (6) and (7) vinyl propionate-sodium vinyl sulphonate, (8) styrene-acrylic acid-acrylonitrile, (9) vinylidene chloride-acrylonitrile-methacrylamide and (10) butyl acrylate-vinyl acetate-sodium vinyl sulphonate-acrylic acid; the catalyst being potassium persulphate or azodiisobutyronitrile and the emulsifier being selected from dodecylbenzene sulphonate, C10-C16-alkyl sulphonate, polyethoxylated octadecyl alcohol, turkey red oil and sodium salt of sulphochlorinated paraffins. The process can also be applied using other monomers such as ethyl acrylate, vinyl pivalate, vinyl chloride, methacrylic acid, acrylamide and N-methylolmethacrylamide; and with other catalysts, e.g. hydrogen peroxide, ammonium persulphate, benzoyl peroxide and dialkyl percarbonates.

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