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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 105 (1919), S. 175-186 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 161 (1927), S. 183-200 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 83 (1913), S. 243-245 
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 122 (1922), S. 51-60 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 91 (1915), S. 57-60 
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurde optisch leeres Silberchlorid und Silberbromid in Kristallen aus dem Schmelzflusse hergestellt.
    Additional Material: 1 Ill.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 187 (1930), S. 129-154 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurden die Gleichgewichte zwischen Thallium und Blei mit Thallium (1) chlorid und Bleichlorid irn Schmelzfluß untersucht.
    Additional Material: 9 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 180 (1990), S. 51-71 
    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: Nonsegmented and segmented polyurethanes (PURs) containing 4,4′-di(ω-hydroxyalkoxy)biphenyls were synthesized and the effect of the spacer length of the mesogenic diol on thermal and mechanical properties was investigated. DSC measurements showed similar thermal transitions for the segmented and the nonsegmented PURs.However, for the segmented PURs a shift to lower temperatures was observed. Polarization microscopy indicated the existence of LC phases in the nonsegmented PURs.The moduli of films of segmented PURs increased with growing length of the spacer, particularly at temperatures ≤40°C, due to decoupling of motions of the mesogenic and the urethane part. Decoupling also promotes formation of larger domains of the mesogenic groups. Flow was observed above a temperature dependent critical stress value.Chemical cross-linking below the thermal transitions improved the mechanical film properties as the physical network, due to domains of the mesogenic groups, superposes the chemical network. This was demonstrated with a PUR containing COOH groups crosslinked with a melamine resin at temperatures below or above the thermal transitions.
    Notes: Es wurden thermische und mechanische Eigenschaften von nichtsegmentierten und segmentierten Polyurethanen untersucht, die als Diolkomponente 4,4′-Di(ω-hydroxyalkoxy)biphenyle mit unterschiedlicher Spacerlänge enthalten. DSC-Messungen zeigten, daß die bei den nichtsegmentierten Polyurethanen auftretenden thermischen Übergänge auch bei den segmentierten beobachtet wurden, allerdings unter Verschiebung zu tieferen Temperaturen. Polarisationsmikroskopische Untersuchungen an den nichtsegmentierten Polyurethanen weisen auf das Vorliegen von LC-Phasen hin.Die Spannungswerte von Filmen segmentierter Polyurethane nahmen mit steigender Spacerlänge insbesondere bei Temperaturen ≤40°C zu. Dies wird auf eine mit steigender Spacerlänge erfolgende Entkopplung der Bewegungen von mesogenem Bereich und Urethanteil zurückgeführt. Die Entkopplung fördert gleichzeitig die Bildung größerer Domänen des Mesogens. Oberhalb eines temperaturabhängigen kritischen Spannungswertes treten Fließvorgänge auf.Eine chemische Vernetzung unterhalb der thermischen Übergänge führt zu einer Verbesserung der mechanischen Filmeigenschaften, da sich die durch Domänen des Mesogens bewirkte physikalische Vernetzung der chemischen überlagert. Die Untersuchung erfolgte an einem Polyurethan mit COOH-Gruppen, das bei Temperaturen unterhalb bzw. oberhalb der thermischen Übergänge mit einem Melaminharz vernetzt wurde.
    Additional Material: 4 Ill.
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  • 8
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 323 (1981), S. 607-615 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: On the Pyrolysis of CycloalkenoaromaticsThe products of pyrolysis of tetraline (1), indane (2), 2-methylindane (3), and tetrahydroacenaphthene (4) in mixtures of n-paraffins were analyzed by gas chromatography. Results show that by temperatures between 700° and 800°C and residence times of about 0.2 s more than 80% of the reaction products are aromatics. The main pathway of the decomposition of 1, 2, and 4 is the dehydrogenation in direction to the corresponding complete aromatic systems or indene respectively. In the case of 3 we found less than 10% of 2-methylindene but more than 40% of skeleton isomeres. The formation of skeleton isomeres can be explained by the concept of radical rearrangements.
    Additional Material: 2 Tab.
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 142-144 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: On the Synthesis of Dimethallyl- and Allylmethallyloxalate
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 385 (1971), S. 33-46 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of (CF3S)2NH with CF3SNCO and , respectively, did not give the corresponding urea derivatives but quantitatively (CF3S)3N and cyanuric acid. SCl2 reacts with (CF3S)2NH as well as with (CF3S)3N to form CF3SCl, S4N3Cl and S2Cl2. In addition, the imide produces also HCl. Benzoylchloride reacts similarly under elimination of CF3SCl to the compound , which could also be obtained from benzamide and CF3SCl. Condensation reactions were only observed with Cl3-nFnCSCl (n = 0, 1, 2) and the imide. In the presence of trimethylamine the substances (CF3S)2NSCFnCl3-n (n = 0, 1, 2) and CF3SN(SCCl3-nFn)2 (n = 1, 2) were formed. IR and 19F-n.m.r. data as well as massspectra are presented; reaction mechanisms are discussed.
    Notes: Bei der Umsetzung von (CF3S)2NH mit CF3SNCO bzw. werden nicht, wie erwartet, die entsprechenden Harnstoffe erhalten, sondern quantitativ (CF3S)3N und Cyanursäure. Sowohl (CF3S)2NH als auch (CF3S)3N reagieren mit SCl2 und liefern CF3SCl, S4N3Cl und S2Cl2. Im Falle des Imids entsteht zusätzlich noch HCl. Ähnlich verläuft die Reaktion mit Benzoylchlorid; unter Eliminierung von CF3SCl bildet sich das CF3S · NH · · C6H5, das auch aus CF3SCl und Benzamid hergestellt worden ist. Lediglich die Umsetzungen des Imids mit Cl3-nFnCSCl (n = 0, 1, 2) führte partiell zu einer Kondensation unter HCl-Austritt. Hierbei entstanden in Anwesenheit von Trimethylamin (CF3S)2NSCFnCl3-n (n = 0, 1, 2) und CF3SN(SCFnCl3-n)2 (n = 1, 2). Für die neu hergestellten Verbindungen werden IR-, 19F-NMR und Massenspektren angegeben. Reaktionsmechanismen werden diskutiert.
    Additional Material: 3 Tab.
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