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    41.
    发明专利
    未知

    公开(公告)号：DK151814B

    公开(公告)日：1988-01-04

    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.

    MANUFACTURE OF POLYVINYLPYRROLIDONE-IODINE
    42.
    发明专利
    MANUFACTURE OF POLYVINYLPYRROLIDONE-IODINE 未知

    公开(公告)号：CA1081394A

    公开(公告)日：1980-07-08

    申请号：CA334554

    申请日：1979-08-28

    Applicant: BASF AG

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

    IPC: C08F126/08

    Abstract: A process for the manufacture of polyvinylpyrrolidoneiodine from polyvinyl pyrrolidone and iodine which comprises: - the free radical polymerization of vinylpyrrolidone in a anhydrous organic solvent selected from the group consisting of aromatic hydrocarbons, lower aliphatic monohydric alcohols of 1 to 4 carbon atoms, in the presence of free radicals supplied by an organic per-compound in an amount of about 0.5 to 5% by weight on the basis of the weight of the vinylpyrrolidone; - converting the obtained polyvinylpyrrolidone, after completion of polymerization and before drying, into an aqueous solution by adding water and distilling off the organic solvent, the aqueous solution then being subjected to treatment with steam and reacting the aqueous polyvinylpyrrolidone solution with iodine.

    MANUFACTURE OF POLYVINYLPYRROLIDONE-IODINE
    43.
    发明专利
    MANUFACTURE OF POLYVINYLPYRROLIDONE-IODINE 未知

    公开(公告)号：CA1079443A

    公开(公告)日：1980-06-10

    申请号：CA233153

    申请日：1975-08-08

    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: A process for the manufacture of polyvinylpyrrolidoneiodine from polyvinyl pyrrolidone and iodine which comprises: -the free radical polymerization of vinylpyrrolidone in a anhydrous organic solvent selected from the group consisting of aromatic hydrocarbons, lower aliphatic monohydric alcohols of 1 to 4 carbon atoms, in the presence of free radicals supplied by an organic per-compound in an amount of about 0.5 to 5% by weight on the basis of the weight of the vinylpyrrolidone; -mixing the resulting polyvinylpyrrolidone in the form of a powder having a K value of from 10 to 50 and a water content of from 0.5 to 11% by weight with iodine in an amount of about 5 to 25% based on the total weight of the polyvinylpyrrolidoneiodine, at about room temperature up to about 50.degree.C and, -heating the resulting mixture for about 5 to 20 hours at about 70 to 100.degree.C.

    Use of dispersions of cationic copolymers for paper sizing
    46.
    发明专利
    Use of dispersions of cationic copolymers for paper sizing 未知

    公开(公告)号：GB976548A

    公开(公告)日：1964-11-25

    申请号：GB4415362

    申请日：1962-11-22

    Applicant: BASF AG

    Inventor： SCHICKH OTTO VON ,  WINTER GERNOT ,  HERRLE KARL ,  REICH JOHANN GEORG

    IPC: C09J139/04 ,  D21H11/06 ,  D21H17/45 ,  D21H21/16

    Abstract: A dispersion for the stock sizing or surface sizing of paper comprises a polymer of (a) 4 to 40% of a quaternary vinylimidazolinium salt of formula where R2 is an alkyl, aralkyl or hydroxyalkyl group, R1 is aryl or R2 and Y is a radical of a strong acid which salt may be substituted in the 4- and 5-positions with low molecular weight alkyl groups and (b) at least 20% of an ester of formula where R3 is hydrogen or a C1-4 alkyl and R4 is a C2- 8 alkyl, (c) acrylonitrile and/or (d) one or more other ethylenically unsaturated polymerizable compounds. Preferred proportions are 7-20% of the salt, 40-80% of the ester and 20-50% of the acrylonitrile. Details of the preparation are given in Specification 976,547. Specification 897,804 also is referred to.ALSO:Paper is stock sized or surface sized with a dispersion of a copolymer of (a)4-40% of a quaternary vinylimidazolinium salt of formula:- where R2 is an alkyl, aralkyl or hydroxyalkyl group, R1 is R2 or aryl and Y is a radical of a strong acid, which salt may be substituted in the 4-or 5-position with low molecular weight alkyl groups and (b) at least 20% of an ester of formula:- where R3 is hydrogen or a C1-4 alkyl and R4 is a C2-3 alkyl (c) acrylonitrile and/or (d) one or more other ethylenically unsaturated polymerizable compounds. Preferred proportions are 7-20% of the salt 40-80% of the ester and 20-50% of the acrylonitrile. Specified paper are kraft, writing, printing and tissue papers and papers containing plastics fibres. The solids content of the dispersion may be from 2 to 20% for stock sizing and 0 5 to 5% for surface sizing. The dispersions may be added to the aqueous paper pulp, or at any point in the paper machine. It is particularly simple to apply the dispersion by means of a sizing press incorporated in the dry end of the paper machine. Also, finished paper if undersized, may be resized in a simple aftertreatment e.g. in a coating machine. In examples the dispersions are used to treat strips of unsized paper from 100% bleached sulphite pulp by dipping the paper in the dispersion and the dispersion is added to an aqueous suspension of bleached sulphite pulp and the mixture made into paper. Specifications 897,804 and 976,547 are referred to.

    í¡í¡ction of cast films from polyvinyl chloride or vinyl chloride copolymers
    50.
    发明专利
    í¡í¡ction of cast films from polyvinyl chloride or vinyl chloride copolymers 未知

    公开(公告)号：GB891218A

    公开(公告)日：1962-03-14

    申请号：GB3238360

    申请日：1960-09-21

    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.

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