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  • Polymer and Materials Science  (8)
  • Industrial Chemistry  (6)
  • 2000-2004
  • 1980-1984  (6)
  • 1970-1974  (8)
  • 1
    Electronic Resource
    Electronic Resource
    Die reversible elektrochemische Ein- und Auslagerung von Anionen in Festbett-Elektroden aus Graphit (1982)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 54 (1982), S. 530-531 
    Details
    ISSN: 0009-286X
    Keywords: Elektrochemie ; Festbett-Elektroden ; Graphit ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330540526
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  • 2
    Electronic Resource
    Electronic Resource
    Neuartige Batterie-Systeme (1982)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 54 (1982), S. 809-817 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: New battery systems. The reversible storage of electrical energy plays a central role in the development of electric vehicles, load levelling in power stations, and technical utilization of solar energy. Electrochemistry offers interesting solutions with optimal energy density; however, these have reached technical maturity in only a few cases. The conventional lead/acid accumulator is being further improved among aqueous systems. Moreover, various other lines of development have been initiated in recent years, such as nickel/zinc and chlorine/zinc accumulators, which offer totally fresh perspectives from an electrochemical and engineering point of view. In the case of zinc/air and aluminium/air batteries, external redeposition of the metal is envisaged. From a practical point of view, aqueous systems are unsurpassable. Metals with an extremely high negative potential like sodium or lithium can only be cycled in the absence of water. Systems with molten salts or solid electrolytes do not suffer from this drawback. The sodium/sulfur battery, which is characterized by readily available cell components of low environmental impact, is presently undergoing intensive development. However, thermal discharge represents a technical problem. The future of these new developments will be governed by their economics, energy density, energy efficiency, power density, and last but not least by their cyclability. These properties have not yet been optimized in a single system.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330540906
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  • 3
    Electronic Resource
    Electronic Resource
    Formaldehyde release from a model N-methylol system (1984)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 29 (1984), S. 3569-3577 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A model N-methylol reactant system based on pyrrolidone derivatives has been used to study the chemical factors that control formaldehyde release. Fabric samples of known composition were prepared from chemically pure reactants and formaldehyde release was determined by the AATCC Sealed Jar Test. This work provides support for prior suggestions and a more direct approach for understanding unexpected results from tests on post-and precure fabrics. In addition, new findings demonstrate that the N-methylol reactant, its byproducts, and pure zinc nitrate are capable of reducing the level of formaldehyde release.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1984.070291130
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  • 4
    Electronic Resource
    Electronic Resource
    Polymerisationsenthalpie der ringöffnenden polymerisation von cyclopenten (CPE) zu trans-polypentenamer (TPR)Herrn Direktor Dr. W. Graulich zum 60. Geburtstag gewidmet (1972)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 27 (1972), S. 29-35 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The enthalpy in the ring-cleavage polymerization of liquid cyclopentene to solid trans-polypentenamer (TPR) was calculated to be 4.2 kcal/mole; in the polymerization of liquid cyclopentene to solid cis-polypentenamer it was found to be 3.2 kcal/mole. The value of 4.5 kcal/mole determined calorimetrically in the polymerization of cyclopentene to trans-polypentenamer with a trans content of 65% agrees well with the calculated values.
    Notes: Für die Polymerisationsenthalpie der ringöffnenden Polymerisation von flüssigem Cyclopenten zu festem trans-Polypentenamer (TPR) wurde ein Wert von 4,2 Kcal/Mol errechnet; für die Polymerisation des flüssigen Cyclopentens zu festem cis-Polypentenamer ergibt die Berechnung eine Wert von 3,2 Kcal/Mol. Der kalorimetrisch bestimmte Wert von 4,5 Kcal/Mol für die Polymerisation von Cyclopenten zu trans-Polypentenamer mit einem trans-Gehalt von 65% stimmt mit den berechneten Werten gut überein.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1972.050270102
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  • 5
    Electronic Resource
    Electronic Resource
    Liquid-chromatographic determination of rate constants for the cellulose-dimethyloldihydroxyethyleneurea reaction (1982)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 27 (1982), S. 1131-1138 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Rates of the MgCl2-catalyzed reaction between cellulose and 4,5-dihydroxy-1,3-bis(hydroxymethyl)-2-imidazolidinone were measured at 70, 90, and 110°C. The rate constants were determined by curing the resin for various times, extracting the unreacted resin, and determining its concentration by liquid chromatography. The energy of activation was calculated from the rate data. This work confirms the pseudo-first-order behavior of this reaction.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1982.070270403
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  • 6
    Electronic Resource
    Electronic Resource
    Reagent residues on N-methylopyrrolidone-treated cotton (1984)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 29 (1984), S. 3579-3585 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Residues remaining after drying and curing cotton fabric with either sodium bisulfate or zinc nitrate and N-methylolpyrrolidone, a monofunctional model durable press agent, have been quantitated by high performance liquid chromatography. The residues were identified as pyrrolidone, N-methylolpyrrolidone, N,N′-methylene-bis-2-pyrrolidone, and N,N′-(oxydimethylene)bis-2-pyrrolidone. The two catalysts fixed approximately the same amount of the N-methylolpyrrolidone to cellulose, but generated different ratios of the extractable residues. A comparison of the levels of these residues that are capable of releasing formaldehyde is given. The dominant residue from the NaHSO4 treatment was N-methylolpyrrolidone, while zinc nitrate generated more N,N′-(oxydimethylene)bis-2-pyrrolidone.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1984.070291131
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  • 7
    Electronic Resource
    Electronic Resource
    Entwicklungsstand der Elektrosynthese organischer VerbindungenVortrag vor der GDCh-Fachgruppe „Angewandte Elektrochemie“, 6. bis 8. Oktober 1969 in Bonn. (1970)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 42 (1970), S. 153-164 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Bei der Elektrosynthese organischer Verbindungen ist es von Vorteil, daß die Selektivität und damit die Ausbeute hoch ist, daß man stöchiometrische Parallelprodukte vermeidet und den Prozeß leicht automatisieren kann und daß man schließlich Normaldruck und Raumtemperatur als Verfahrensparameter hat, wodurch die breite Anwendung von Kunststoffen und Ionenaustauscher-Membranen möglich ist. Viele spezifische Probleme bezüglich der Elektroden, des Elektrolyten, des Lösungsmittels, der optimalen Zellenkonstruktion und nicht zuletzt der Kosten für die Elektroenergie konnten in der letzten Zeit gelöst werden. Dies wird an einigen Beispielen, wie der Elektrosynthese von Adipinsäuredinitril, von Bleialkylen, von Sebacinsäureester und von Salicylaldehyd, aufgezeigt. Die Elektrosynthese von Adipinsäuredinitril demonstriert auch, welche Umstände die Einführung eines elektrochemischen Verfahrens zwingend erscheinen lassen und gegen welche Konkurrenzverfahren dieses sich im Laufe der Zeit behaupten muß.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330420402
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  • 8
    Electronic Resource
    Electronic Resource
    Bifunktionelle Verbindungen durch Kolbe-ElektrolyseVortrag vor der GDCh-Fachgruppe „Angewandte Elektrochemie“, 6. bis 8. Oktober 1969 in Bonn. (1970)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 42 (1970), S. 170-175 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zur Synthese bifunktioneller organischer Verbindungen bietet die Kolbe-Elektrolyse viele Möglichkeiten, die jedoch bisher technisch kaum genutzt wurden. In dieser Arbeit wird die Elektrolyse von Di-, Amino- und Oxycarbonsäuren näher untersucht. Die hierfür entwickelte Vibratorzelle erlaubt es, trotz der starken Gasentwicklung während der Reaktion, mit einem geringen Elektrodenabstand und folglich mit einer niedrigen Zellspannung zu arbeiten. Die Abhängigkeit der Ausbeuten vom Substrat und den Elektrolysebedingungen, wie Neutralisationsgrad, Stromdichte und Lösungsmittel, wird an einigen Beispielen aufgezeigt.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330420404
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  • 9
    Electronic Resource
    Electronic Resource
    LösungsakkumulatorenVortrag auf der Tagung der GDCh-Fachgruppe „Angewandte Elektrochemie“, 4. und 5. Oktober 1973 in Ludwigshafen/Rh. (1974)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 46 (1974), S. 127-131 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Lösungsakkumulatoren sind Sekundärbatterien, die aus Elektroden 1. Art aufgebaut sind, im Gegensatz zu den konventionellen Systemen, die Elektroden 2. Art enthalten. Als wichtigster Vorteil ergibt sich die vollständige Ausnutzung der aktiven Massen. Daraus folgt eine stark verbesserte Energie- und Leistungsdichte gegenüber vergleichbaren Systemen, bei denen die Aktivmassen stets als feste Phasen vorliegen. Auch die Belastbarkeit mit hohen Stromdichten, das Tieftemperaturverhalten und die Lebensdauer der Systeme werden verbessert. Die Stellung des Lösungsakkumulators in der Reihe der Systeme mit wäßrigem Elektrolyten wird diskutiert. Die praktikablen aktiven Massen und ihre Kombinationsmöglichkeiten werden behandelt sowie experimentelle Ergebnisse am System Pb/PbO2/HClO4 mitgeteilt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330460402
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  • 10
    Electronic Resource
    Electronic Resource
    Elektrotauchlackierung. Von W. Machu. Verlag Chemie GmbH, Weinheim/Bergstr. 1974. l. Aufl., X, 338 S., 133 Abb., 32 Tab., Ln. DM 98,- (1974)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 46 (1974), S. 879-880 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330462015
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