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  • 1
    Electronic Resource
    Electronic Resource
    3,4-Dimethoxypyrrole: Monomer synthesis and conducting polymer formationThis work was supported by the Fonds der Chemischen Industrie. [AMC 156] (1992)
    Weinheim : Wiley-Blackwell
    Advanced Materials 4 (1992), S. 409-411 
    Details
    ISSN: 0935-9648
    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
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19920040606
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  • 2
    Electronic Resource
    Electronic Resource
    Poly-[N,N-(1,4-divinylbenzene-β,β′-diyl)-4,4′-bipyridinium dibromide], a novel conducting viologen polymerThis work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrid. (1989)
    Weinheim : Wiley-Blackwell
    Advanced Materials 1 (1989), S. 193-194 
    Details
    ISSN: 0935-9648
    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
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19890010603
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  • 3
    Electronic Resource
    Electronic Resource
    Korrosions- und Erosionsschutz von Metallen und alkalischen UntergründenVortrag, gehalten auf dem Europäischen Treffen für Chemische Technik und der ACHEMA-Tagung, Juni 1967, Frankfurt/M. (1968)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 19 (1968), S. 504-511 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Corrosion and erosion protection of metals and alkaline surfacesWith the aid of numerous examples, it is shown that a suitable construction has an important bearing on the durability of coatings. In recent years, zinc-rich primers on metal sheeting have assumed increasing importance as they preserve the weldability of the metal. A simple apparatus has been designed for the determination of the Zn vapours released during welding. Increasingly important, too, are thick coating systems, especially because of the saving in labour. Paints for non-derusted bases should be regarded with scepticism. Alkaline bases (concrete, mortar) call for alkaline-resistant coatings (e.g. facade paints or sealing compounds for plaster cracks) or, additionally, for resistance to heating oil (heating oil troughs). Among recent developments are paints with multi-colour effect and paints etc. for road markings.
    Notes: Anhand zahlreicher Beispiele wird die Bedeutung zweckmäßiger Konstruktion für die Haltbarkeit von Beschichtungen gezeigt. In neuerer Zeit gewinnen zinkreiche Grundierungen für Blech zunehmende Bedeutung, da hierdurch die Schweißbarkeit erhalten bleibt. Für die Bestimmung der beim Schweißen entstehenden Zn-Dämpfe wurde eine einfache Apparatur entwickelt. Zunehmende Bedeutung besitzen Dickschichtsysteme, vor allem wegen der Arbeitseinsparungen. Skepsis ist gegenüber Anstrichstoffen für nicht entrostete Untergründe angebracht. Alkalische Untergründe (Beton, Mörtel) erfordern Alkalibeständigkeit des Anstrichs (z. B. Fassadenanstriche oder Dichtungsmassen für Risse im Putz) oder, zusätzlich Heizölbeständigkeit (Heizöl-Auffangwannen). Zu den neuen Entwicklungen gehören Anstrichstoffe mit Multicolor-Effekt und Mittel für Straßenmarkierungen.
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19680190606
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  • 4
    Electronic Resource
    Electronic Resource
    Particle identity point in suspension polymerization (1960)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 3 (1960), S. 374-374 
    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
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1960.070030922
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  • 5
    Electronic Resource
    Electronic Resource
    Über den thermischen abbau des poly-∊-caprolactams (Nylon-6) (1978)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 67 (1978), S. 193-202 
    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: Poly-∊-caprolactam had been pyrolyzed directly in the ion source of a mass spectrometer. Already at temperatures below 100°C cyclic oligomers present in the polymer begin to evaporate in the high vacuum and can be identified mass spectrometrically without previous isolation. At temperatures above 390°C the start of an intensive thermal degradation is observed under the described conditions, and it can be shown that mainly cyclic oligomers of caprolactam are produced.
    Notes: Poly-∊-caprolactam (Nylon-6) wurde direkt in der Ionenquelle eines Massenspektrometers pyrolysiert. Bereits bei Temperaturen unterhalb 100°C heginnen dabei die im Polymeren enthaltenen cyclischen Oligomeren im Hochvakuum zu verdampfen und können massenspektrometrisch ohne vorherige Isolierung identifiziert werden. Bei Temperaturen oberhalb 390°C wird unter den genannten Bedingungen das Einsetzen eines intensiven thermischen Abbaus beobachtet, und es kann gezeigt werden, daß hierbei überwiegend cyclische Oligomere des Caprolactams gebildet werden.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1978.050670114
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  • 6
    Electronic Resource
    Electronic Resource
    Über den thermischen Abbau von Polyamiden der Nylon-ReiheHerrn Prof. Dr. Dr. h. c. Heinrich Hellmann zum 65. Geburtstag gewidmet (1978)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 74 (1978), S. 165-185 
    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: Several aliphatic polyamides (nylon-7, nylon-12, nylon-4, nylon-6,6, nylon-6,10, nylon-4,10, nylon-11,6, nylon-12,12) have been investigated in a mass spectrometer. Cyclic oligomers, which evaporate in the high vacuum of the ion source at temperatures below 200°C can be detected without previous isolation. The start of a thermal decomposition can be observed via the total ion current at temperatures above 350°C. Under those conditions polyactams are degraded by ring-chain equilibration into cyclic oligomers, whereas the favoured decomposition of polyamides of dicarboxylic acids and diamines is a cis elimination and the cleavage of the amide bond. With an increasing content of methylene groups these mechanisms also occur in polylactams. Mass spectra recorded of each polyamide at 170°C and ca. 400°C are characteristic and can be used for a fast identification and differentiation.
    Notes: Eine Reihe von aliphatischen Polyamiden (Nylon-7, Nylon-12, Nylon-4, Nylon-6,6, Nylon-6,10, Nylon-4,10, Nylon-11,6, Nylon-12,12) wurde im Massenspektrometer untersucht. In allen genannten Polyamiden lassen sich cyclische Oligomere ohne vorherige Isolierung nachweisen, die im Hochvakuum der Ionenquelle bei Temperaturen unterhalb 200°C verdampfen. Das Einsetzen eines thermischen Abbaus läßt sich bei Temperaturen oberhalb 350°C über den Totalionenstrom beobachten. Die Polylactame werden unter diesen Bedingungen vor allem durch Verschiebung des Ring-Kettengleichgewichtes zu cyclischen Oligomeren, die Polyamide aus Dicarbonsäuren und Diaminen bevorzugt durch cis-Eliminierung und Spaltung der Amidbindung abgebaut. Mit zunehmender Anzahl enthaltener Methylengruppen werden diese Abbaureaktionen auch bei Polylactamen beobachtet. Die von jedem Polyamid bei 170°C und ca.400°C aufgenommenen Massenspektren sind charakteristisch und können zur schnellen Identifizierung und Differenzierung benutzt werden.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1978.050740112
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  • 7
    Electronic Resource
    Electronic Resource
    Fractionation of polycyclohexyl methacrylate (1948)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 3 (1948), S. 790-791 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1948.120030520
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  • 8
    Electronic Resource
    Electronic Resource
    Rheology of thermoplastics. II.Presented in part before the Society of Rheology, New York, Nov. 2, 1949. Part I of this paper was published in J. Colloid Sci., 3, 87 (1948). Recoverable and nonrecoverable deformations of polystyrene between 90 and 240°C. as a function of molecular weight (1951)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 6 (1951), S. 403-422 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The rheological properties of polystyrene have been studied between 90 and 240°C. as a function of molecular weight. Three different methods have been used to obtain the data: rotational viscometer, extrusion-type capillary viscometer, and tensile creep measurements. It has been shown that the nonrecoverable (viscous) deformation is a function of molecular weight whereas the recoverable deformations are, within the investigated molecular weight range, practically independent of chain length. An explanation of this observation is suggested, based on the assumption of a labile network structure, which explains also the effect of “previous history” on the recoverable deformations. The temperature dependence of the recoverable and nonrecoverable deformations is shown to be very similar. Experimental evidence is presented to show that the dependence of the viscosity on shear stress (or rate of shear) is not a simple power relationship but is of the sigmoidal type. It is shown that the creep or compliance function a few degrees below the second-order transition point does not depend on the weight- or number average molecular weight.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1951.120060403
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  • 9
    Electronic Resource
    Electronic Resource
    Plastics, scientific and technological. Third edition. H. R. Fleck, Temple Press Limited, London, 1951. 396 pp., 4 appendices, $7.50 (1952)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 8 (1952), S. 528-528 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1952.120080509
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  • 10
    Electronic Resource
    Electronic Resource
    Dynamic mechanical measurement of M̄nPresented at the International Conference on Macromolecules, Wiesbaden-Mainz, October 12-16, 1959. (1960)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 44 (1960), S. 149-154 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: A procedure is described for the measurement of number-average molecular weight M̄n on a specimen in bulk form, utilizing a dynamic torsion pendulum. For both atactic and isotactic polystyrenes it has been found that the minimum value of the damping logarithmic decrement, δm, (above the glass temperature) is related to an measured osmometrically in dilute solution by M̄n = δm-1.9 × 105. The M̄v/M̄n ratio can also be estimated directly from the δ vs. temperature curve. A four-element spring-and-dashpot model yields similar 6 vs. T curves when the Williams-Landel-Ferry temperataure dependence is assigned to the viscosity of the dashpots.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1960.1204414313
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