Preparation of polyvinylpyrrolidone-iodine
    51.
    发明授权
    Preparation of polyvinylpyrrolidone-iodine 失效
    聚乙烯吡咯烷酮碘的制备

    公开(公告)号:US4200710A

    公开(公告)日:1980-04-29

    申请号:US30900

    申请日:1979-04-17

    CPC分类号: A01N59/12 C08F8/22

    摘要: A process for the preparation of PVP-iodine by reacting polyvinylpyrrolidone powder with elementary iodine at from 70.degree. to 100.degree. C. The reaction is carried out in the presence of formic acid, oxalic acid or an ammonium salt or amide of carbonic acid, formic acid or oxalic acid. The process avoids the disadvantage of long periods of heating, which can result in degradation of the polyvinylpyrrolidone, and is particularly suitable for the preparation of a stable PVP-iodine using a low molecular weight polyvinylpyrrolidone.

    摘要翻译: 一种通过使聚乙烯吡咯烷酮粉末与元素碘在70℃至100℃下反应制备PVP-碘的方法。反应在甲酸,草酸或碳酸的铵盐或酰胺存在下进行,甲酸 酸或草酸。 该方法避免长时间加热的缺点,这可能导致聚乙烯吡咯烷酮的降解,并且特别适用于使用低分子量聚乙烯吡咯烷酮制备稳定的PVP-碘。

    Manufacture of polyvinylpyrrolidone-iodine
    52.
    发明授权
    Manufacture of polyvinylpyrrolidone-iodine 失效
    聚乙烯吡咯烷酮碘的制造

    公开(公告)号:US4027083A

    公开(公告)日:1977-05-31

    申请号:US602772

    申请日:1975-08-07

    CPC分类号: C08F126/10

    摘要: 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.

    摘要翻译: 聚乙烯吡咯烷酮碘,通过碘和聚乙烯吡咯烷酮的反应制得,该聚乙烯吡咯烷酮通过在无水有机溶剂中,在自由基源的存在下,任选在23〜29的原子序数的重金属的存在下,以 络合物或与有机酸形成的盐作为共活化剂,然后蒸气蒸馏该聚乙烯吡咯烷酮。 本发明的PVP-碘非常稳定,可用作消毒剂。

    Production of chlorofluorocarbon-free, urethane-containing moldings
having a cellular core and an integral skin
    55.
    发明授权
    Production of chlorofluorocarbon-free, urethane-containing moldings having a cellular core and an integral skin 失效
    生产不含氟碳的含氨基甲酸酯的模制品,具有细胞芯和整体皮肤

    公开(公告)号:US5731361A

    公开(公告)日:1998-03-24

    申请号:US529780

    申请日:1995-09-18

    IPC分类号: C08G18/62 C08J9/34

    摘要: Chlorofluorocarbon-free, urethane-containing moldings having a cellular core and an integral skin with an essentially pore-free surface, ie. polyurethane (PU) integral foams, are produced by reacting the conventional starting components in the presence of blowing agents, catalysts and at least one additive selected from the group consisting of the partially or completely neutralized (1) homopolymers of monoethylenically unsaturated monocarboxylic acids, dicarboxylic acids or the internal anhydrides thereof, (2) copolymers of (2i) monoethylenically unsaturated monocarboxylic acids, dicarboxylic acids or the internal anhydrides thereof and (2ii) carboxyl-free, monoethylenically unsaturated monomers copolymerizable with (2i) and (3) copolymers or graft copolymers of (3i) monoethylenically unsaturated monocarboxylic acids and/or their salts,(3ii) monoethylenically unsaturated dicarboxylic acids, their salts and/or their internal anhydrides and (3iii) if required, carboxyl-free, monoethylenically unsaturated monomers copolymerizable with (3i) and (3ii) in a closed mold with compaction.

    摘要翻译: 不含氯氟烃,含氨基甲酸酯的模制品具有细胞核和具有基本无孔表面的整体皮肤,即, 聚氨酯(PU)整体泡沫是通过在发泡剂,催化剂和至少一种选自部分或完全中和的(1)单烯属不饱和一元羧酸均聚物,二羧酸 酸或其内部酸酐,(2)(2i)单烯属不饱和一元羧酸,二羧酸或其内部酐的共聚物和(2ii)可与(2i)和(3)共聚物或接枝共聚的无羧基单烯属不饱和单体 (3i)单烯属不饱和一元羧酸和/或其盐的共聚物,(3ii)单烯键式不饱和二羧酸,其盐和/或其内部酸酐和(3iii)如果需要,可与(3i)单烯属不饱和单羧酸共聚的无羧基单烯属不饱和单体, 和(3ii)在具有压实的封闭模具中。

    Water-soluble or water-dispersible graft polymers of proteins as leather
tanning agents
    56.
    发明授权
    Water-soluble or water-dispersible graft polymers of proteins as leather tanning agents 失效
    作为皮革鞣剂的蛋白质的水溶性或水分散性接枝聚合物

    公开(公告)号:US5714560A

    公开(公告)日:1998-02-03

    申请号:US737329

    申请日:1996-11-13

    IPC分类号: C08F289/00 C14C3/22

    CPC分类号: C08F289/00 C14C3/22

    摘要: Water-soluble or water-dispersible graft polymers which are obtainable by free-radical-initiated polymerization of (A) a monomer or monomer mixture comprising (a) from 20 to 100% by weight of acrylic acid or methacrylic acid or a mixture thereof or alkali metal, alkaline earth metal or ammonium salts thereof, (b) from 0 to 80% by weight of other monoethylenically unsaturated monomers which can be copolymerized with the monomers (a), and (c) from 0 to 5% by weight of monomers containing at least 2 ethylenically unsaturated, non-conjugated double bonds in the molecule, in the presence of proteins (B) in an A:B weight ratio of from (95 to 10):(5 to 90), are used as tanning agents for self-tanning, pretanning and assist tanning of pelts and skin pelts and for the retanning of leather and skin.

    摘要翻译: PCT No.PCT / EP95 / 01720 Sec。 371日期:1996年11月13日 102(e)日期1996年11月13日PCT提交1995年5月6日PCT公布。 公开号WO95 / 31576 日期1995年11月23日可通过(A)单体或单体混合物的自由基引发聚合获得的水溶性或水分散性接枝聚合物,其包含(a)20至100重量%的丙烯酸或甲基丙烯酸 或其混合物或其碱金属,碱土金属或铵盐,(b)0至80重量%的其它单烯属不饱和单体,其可与单体(a)和(c)共聚0至5 (B)重量比为(95〜10):(5〜90)的蛋白质(B)存在下,分子中含有至少2个烯属不饱和的非共轭双键的单体重量% 用作鞣制剂,用于自动鞣制,预处理和辅助皮肤和皮肤鞣制以及皮革和皮肤的复鞣。