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    1.
    发明专利
    未知

    公开(公告)号：DE1289657B

    公开(公告)日：1969-02-20

    申请号：DEB0050735

    申请日：1958-10-15

    Applicant: BASF AG

    Inventor： KNOBLOCH ,  ERICH DR HORST ,  MEYER ,  FERDINAND DR ,  STASTNY ,  FRITZ DR

    IPC: C08J9/18 ,  C09B59/00

    Abstract: In a process for the production of expandable granular thermoplastic material with a grain size of 0,2-4 mm., water containing a dispersing agent for organic liquids immiscible with water, and a solution of a thermoplastic resin in a low-boiling organic solvent which forms with water two separate phases and which also contains in solution 2-20% (based on the weight of the thermoplastic resin) of a water-insoluble expanding agent for the resin, are admixed while being kept in steady motion, the organic solvent is removed from the mixture while continuing the steady motion, and the resulting thermoplastic granules are separated from the aqueous phase. Specified thermoplastic resins are polymers of styrene, acrylic and methacrylic acid esters, vinyl chloride, vinylidene chloride, vinyl carbazole, the polycarbonate produced from butane-diol-(1,4), 2,2-di-(p-hydroxyphenyl)-propane and phosgene, a styreneacrylonitrile copolymer, and condensation products of linear polyesters or polyamides. Chlorpolystyrene may also be used: this is made, as described in Example 1, by leading chlorine into a solution of polystyrene in methylene chloride and expelling the resulting hydrogen chloride by a current of nitrogen. The resulting solution may be used directly as one component of the mixture by adjusting its pH to 8 by addition of dry ammonia, and adding an expanding agent thereto. Specified solvents are methylene chloride, ethylene chloride, carbon tetrachloride, 1,1,2-trichlorethane, benzene, ethyl acetate, diisopropyl ether and tetrahydrofuran. Specified expanding agents are the volatile liquid type, such as petroleum ether, pentane, cyclopentane, hexane, cyclohexane, heptane, diethyl ether and carbon tetrachloride, and the decomposable type such as azoisobutyronitrile, diazoaminobenzene and benzene sulphonic acid hydrazide. The solution of thermoplastic resin may also contain fillers, pigments, dyestuffs, softeners, flame-preventing additives and insecticides. In one example (2), glycol diglycidyl ether is added as a stabilizer to a chlorpolystyrene solution. Specified dispersing agents are polyvinyl pyrrolidone, a copolymer of vinyl pyrrolidone and methyl acrylate, gelatin, casein, polyvinyl alcohol, polyacrylic acid (or salts thereof), kaolin, talc, precipitated magnesium hydroxide or barium sulphate, and alkali salts of alkyl sulphonic acids, alkyl naphthalene sulphonic acids and long-chain aliphatic carboxylic acids. The solvent may be removed from the mixture either during or after mixing, e.g. by leading an inert gas such as nitrogen or carbon dioxide therethrough, or by distilling off under reduced pressure. The granules may be separated from the aqueous phase by filtering or centrifuging, and may be expanded to form a closed-cell body by heating above the softening-point of the resin and above the temperature at which the expanding agent acts.ALSO:In a process for the production of expandable granular thermoplastic material with a grain size of 0,2-4 mm., water containing a dispersing agent for organic liquids immiscible with water, and a solution of a thermoplastic resin in a low-boiling organic solvent which forms with water two separate phases and which also contains in solution 2-20% (based on the weight of the thermoplastic resin) of a water-insoluble expanding agent for the resin, are admixed while being kept in steady motion, the organic solvent is removed from the mixture while continuing the steady motion, and the resulting thermoplastic granules are separated from the aqueous phase. Specified thermoplastic resins are polymers of styrene, acrylic and methacrylic acid esters, vinyl chloride, vinylidene chloride, vinyl carbazole, the polycarbonate produced from butane-diol-(1, 4), 2, 2-di-(p-hydroxyphenyl)-propane and phosgene, a styrene-acrylonitrile copolymer, and condensation products of linear polyesters or polyamides. Chlor-polystyrene may also be used: this is made, as described in Example 1, by leading chlorine into a solution of polystyrene in methylene chloride and expelling the resulting hydrogen chloride by a current of nitrogen. The resulting solution may be used directly as one component of the mixture by adjusting its pH to 8 by addition of dry ammonia, and adding an expanding agent thereto. Specified solvents are methylene chloride, ethylene chloride, carbon tetrachloride, 1, 1, 2-trichlorethane, benzene, ethyl acetate, di-isopropyl ether and tetrahydrofuran. Specified expanding agents are the volatile liquid type, such as petroleum ether, pentane, cyclopentane, hexane, cyclohexane, heptane, diethyl ether and carbon tetrachloride, and the decomposable type such as azoisobutyronitrile, diazoamino-benzene and benzene sulphonic acid hydrazide. The solution of thermoplastic resin may also contain fillers, pigments, dyestuffs, softeners, flame-preventing additives and insecticides. In one example (2), glycol diglycidyl ether is added as a stabilizer to a chlorpolystyrene solution. Specified dispersing agents are polyvinyl pyrrolidone, a copolymer of vinyl pyrrolidone and methyl acrylate, gelatin, casein, polyvinyl alcohol, polyacrylic acid (or salts thereof), kaolin, talc, precipitated magnesium hydroxide or barium sulphate, and alkali salts of alkyl sulphonic acids, alkyl napthalene sulphonic acids and long-chain aliphatic carboxylic acids. The solvent may be removed from the mixture either during or after mixing, e.g. by leading an inert gas such as nitrogen or carbon dioxide therethrough, or by distilling off under reduced pressure. The granules may be separated from the aqueous phase by filtering or centrifuging, and may be expanded to form a closed-cell body by heating above the softening-point of the resin and above the temperature at which the expanding agent acts.

    8.
    发明专利
    未知

    公开(公告)号：DE59812282D1

    公开(公告)日：2004-12-30

    申请号：DE59812282

    申请日：1998-01-29

    Applicant: BASF AG

    Inventor： FALKE DR ,  HENDREICH REGINA ,  FRITZ DR ,  ROTERMUND INGE

    IPC: C08G18/66

    Abstract: Preparation of homogeneous disintegration stable polyurethane components, comprising a high molecule wt. compound(s) with at least two reactive H atoms and low molecule wt. chain extenders and/or crosslinkers and optionally propellants, catalysts and other aids, involves adding an amine(s) and least one organic and/or modified organic isocyanate. Also claimed are the obtained polyurethane components.

    10.
    发明专利
    未知

    公开(公告)号：DE1298087B

    公开(公告)日：1969-06-26

    申请号：DEB0085386

    申请日：1966-01-13

    Applicant: BASF AG

    Inventor： BECK ,  FRITZ DR ,  LEITNER ,  HANS DR ,  WINTERSBERGER ,  KARL DR ,  GUTHKE ,  HARALD DR

    IPC: C25B3/25 ,  C25B3/29 ,  C25B9/17 ,  C25B15/00 ,  C25B15/06 ,  B01K3/00

    Abstract: 1,145,539. Electrolytic cell for producing organic compounds. BADISCHE ANILIN - & SODA - FABRIK A.G. July 8, 1966 [July 9, 1965; Jan.13, 1966], No.30712/66. Heading C7B. Apparatus for performing electro-chemical reactions of organic compounds in a flowing electrolyte, particularly the hydrodimerization of acrylonitrile to adiponitrile, comprises at least one uniformly liquid-permeable electrode pair 1a, b in which the electrodes are spaced less than 1 mm. apart, preferably separated by a liquid-permeable insulator 22, e.g. porous glass fibre cloth or paper, or porous plastic sheeting or ceramics. Electrolyte may be supplied and withdrawn, preferably recycled through a heat exchanger, to enable it to flow through the electrode pair(s). Pulsations may be imparted to the electrolyte and/or the electrode pair(s), e.g. by securing the electrode support and connection 4 to a vibrator 23. Current may be supplied through metal sleeves 2 pressed coaxially into plastic spoked-wheel shaped members 3. The electrodes may be made of metal or wire cloth, screens, expanded metal or sintered articles. Cathodes may be composed of Cu, brass or iron wire coated with Pb, Cd, Hg, Hg-Pb, Pb-Th, Hg-Ag, or Zn, Cu, Pt, Pd, Ni or graphite activated with Pt; anodes may be composed of metal or wire cloth or expanded metal support of Pt, Ni, Ti, or Ta coated with Ni or Pt with a coating of PbO 2 or Tl 2 O 3 , Pt, Pt-Ir, Pt-Rh, Ni, Fe, alloy steel or graphite. For producing adiponitrile with some propionitrile, examples are given of electrolytes composed of 66-81À5% acrylonitrile, 5-15% methanol or 20 or 22À5% isopropanol or 20% dioxane or dimethyl formamide, 7 or 8% water, and 0À5 or 1% tetramethyl ammonium methyl (or p-totuene) sulphate; the pH is regulated by adding acetic acid and triethylamine through a dropping funnel 27, and the off gas pipe passes through a reflux condenser 28. A solution of monomethyl adipate in methanol, electrochemically reacted with sodium methylate, is condensed to dimethyl sebacate. The apparatus may be used for other organic electro-chemical reactions.

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