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  • 1
    Electronic Resource
    Electronic Resource
    Cure rates of phenolic resins by differential thermal analysis (1965)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 9 (1965), S. 777-784 
    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 method has been developed to show the effect of temperature, catalyst level, resin advancement, and water content on the cure rate of phenolic resins by DTA. This DTA procedure allows for quantitative measurement of the phenolic resins cure exotherm.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1965.070090234
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  • 2
    Electronic Resource
    Electronic Resource
    Photopolymerization studies: I. Polymers from new photoredox catalyst systemPresented at the SPE First Technical Conference on Photopolymers, Ellenville, N. Y., November 5-7, 1967. (1969)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 9 (1969), S. 40-48 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    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 new photoredox catalyst is described wherein a phenothiazine dye in its excited state oxidizes a catalyst to a free radical. This free radical efficiently initiates the polymerization of metal acrylates giving rise to polymers which are insoluble in the monomer-containing medium. The polymers precipitate as insoluble colloidal particles. Optical transmission measurements are used to follow the polymerization and to calculate the number and size of the polymer particles. The effect of various factors such as the nature of the catalyst and the photooxidant, the pH and the temperature of the medium on photopolymerization are described. It is indicated that this new system may be useful for rapid photographic imaging and display applications.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760090107
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  • 3
    Electronic Resource
    Electronic Resource
    Transition-metal complexes with bidentate ligands spanning trans-positions. Part XVIIIPart XVII: [1]. Crystal and molecular structure of the ligands 2,11-bis(di-R-phosphinomethyl)benzo[c]phenanthrene (R = Phenyl, tert-Butyl) and a comparison of their conformation in a variety of complexes (1989)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 72 (1989), S. 1293-1300 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The X-ray crystal structures of 2,11-bis(di-R-phosphinomethyl)benzo[c]phenanthrenes (R = Ph, t-Bu) are reported. Both ligands have the same conformation and the substitution of a Ph by a t-Bu group does not cause significant changes in the tetracyclic aromatic unit which shows the same distortions as the parent hydrocarbon. The conformations and structural features of the two ligands and 18 complexes containing these ligands as well as of one compound with a ligand with Et substituents are compared. It is pointed out that (1) the conformations of the free ligands differ significantly from those of their complexes, (2) in all the complexes characterized to date, these ligands act as chelating agents, and (3) the ligands adopt two different conformations in the complexes, one of them appearing to be more flexible than the other.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19890720617
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  • 4
    Electronic Resource
    Electronic Resource
    Verwendung chemischer Reaktionen zur akustisch-optischen Bildwandlung (1950)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 62 (1950), S. 186-188 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird eine Methode beschrieben, um unterschiedliche Intensitäten eines Schallfeldes dadurch sichtbar zu machen, daß in einem rasterartig aufgebauten und mit geeigneten Flüssigkeiten gefülltem Kammersystem chemische Reaktionen ausgelöst werden. Verwendet wird hierbei z. B. die durch Tetrachlorkohlenstoff sensibilisierte Jod- Ausscheidung bei Beschallung einer Kaliumjodid-Stärke-Lösung.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19500620804
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  • 5
    Electronic Resource
    Electronic Resource
    Untersuchungen zur Klärung einiger chemischer Wirkungen des Ultraschalls (1952)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 64 (1952), S. 162-163 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on the Clarification of a Number of Chemical Effects of Ultrasonic WavesIt is proved that the formation of oxygen in liquids containing water and the cleavage of the molecular linkage in CCl4 dissolved in water as caused by ultrasonic waves is tied up with the presence of very small bubbles of gas oscillating in resonance. The ultrasonic chemical effects mentioned do not occur in degassed liquids or when standing waves are prevented.
    Notes: Es wird nachgewiesen, daß die durch Ultraschall bewirkte Sauerstoff-Bildung in wasserhaltigen Flüssigkeiten und der Bruch der Molekel-Bindung von in Wasser gelöstem CCl4 an das Vorhandensein von in Resonanz schwingenden Gasbläschen gebunden ist. Bei entgasten Flüssigkeiten sowohl wie auch bei Verhinderung stehender Wellen finden die erwähnten chemischen Ultraschallwirkungen nicht statt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19520640604
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  • 6
    Electronic Resource
    Electronic Resource
    Untersuchungen zur Klärung chemischer Wirkungen des Ultraschalls (1953)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 65 (1953), S. 249-252 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Daß die destruktiven chemischen Wirkungen des Ultraschalls, durch die in stehenden Wellenfeldern in Resonanz schwingenden Gasbläschen hervorgerufen werden, wird durch Versuche bestätigt. Es wird gezeigt, daß sich verschiedene Erscheinungen, die mit durch Ultraschall hervorgerufenen chemischen Wirkungen zusammenhängen - Verhalten von Gelen und Flüssigkeiten mit hohem Gasgehalt, Ort maximaler chemischer Effekte, Flüssigkeitsmindestmenge, Wirkungsabfall bei Sprudelbildung, Abhängigkeit von Impulsdauer und Frequenz - zwanglos mit Hilfe bereits vom Autor mitgeteilter Erkenntnisse über das Wesen der chemischen Wirkungen des Ultraschalls erklären lassen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19530651002
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  • 7
    Electronic Resource
    Electronic Resource
    Ultraschallbildwandlung mittels thermisch bewirkten Farbumschlags (1952)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 64 (1952), S. 308-311 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Supersonic Image Conversion through Thermally Effected Colour ChangeA new method of supersonic image conversion is suggested for the purpose of supersonic radiography (non-destructive testing of materials). The supersonic heat of absorption in the field medium is utilized for image conversion, in that colour changes are caused by thermochromes. Silver tetra-iodomercurate is particularly suitable. An image converter is prepared by applying a thin layer of silver tetraiodo-mercurate to an acetyl cellulose foil, thereby producing a highly sensitive supersonic “exposure material” analogous to the photographic film.
    Notes: Es wird für Ultraschall-Durchleuchtungszwecke (zerstörungsfreie Werkstoffprüfung) eine neue Methode der Ultraschall-Bildwandlung vorgeschlagen. Die Ultraschall-Absorptionswärme im Feldmedium wird zur Bildwandlung ausgenutzt, indem Farbänderungen von Thermochromen hervorgerufen werden. Besonders geeignet ist Silbertetrajodomerkurat. Es wird zur Herstellung eines Bildwandlers in dünner Schicht auf Acetylcellulose-Folie gebracht, wodurch sich ein dem photographischen Film analoges Ultraschall- „Belichtungsmaterial“ hoher Empfindlichkeit ergibt.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19520641105
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  • 8
    Electronic Resource
    Electronic Resource
    Kritische Betrachtungen zur Dielektrometrie von Flüssigkeiten (1951)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 63 (1951), S. 43-44 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei der Präzisions-Dielektrometrie mehrphasiger, flüssiger Systeme ist es wichtig, die mehr oder weniger, gelöst oder adsorbiert, auftretende Gasphase zu beachten, da sie das Meßergebnis verfälschen kann. Messungen der Dielektrizitätskonstanten von reinem CCl4 vor und nach Entgasung mittels Ultraschall ergaben, daß nach der Gasaustreibung die Dielektrizitätskonstante um 2,27. 10-3 größer geworden war. Bei Anwendung der Ultraschall-Entgasung können möglicherweise chemische Umwandlungen eintreten.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19510630204
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  • 9
    Electronic Resource
    Electronic Resource
    Über die Konstitution der Isomeren Cycloheptatrien Carbonsäuren (1957)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 602 (1957), S. 94-117 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Das Verhalten der aus Norcaradien-carbonsäure hervorgehenden Cycloheptatrien-carbonsäuren gegenüber den Estern der Acetylen-dicarbonsäure zwingt zu einer Abänderung der seinerzeit von E. Buchner vorgeschlagenen und neuerdings von Ch. Grundmann und G. Ottmann revidierten Formulierungen. _ Die Dien-Synthesen der Norcaradien-carbonsäure und der Cycloheptatrien-carbonsäuren werden untersucht.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.19576020109
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  • 10
    Electronic Resource
    Electronic Resource
    Ueber organische Tellurverbindungen (1897)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 30 (1897), S. 2828-2834 
    Details
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.18970300378
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