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  • Polymer and Materials Science  (10)
  • triprolidine  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    The evaluation of histamine antagonists in man (1971)
    Springer
    European journal of clinical pharmacology 3 (1971), S. 215-220 
    Details
    ISSN: 1432-1041
    Keywords: Antihistaminics ; triprolidine ; histamine ; experimental design ; cyclizine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary A new method for evaluating histamine antagonists in man is described based on diminution of the effects of intradermal histamine. The inter and intra subject variability of such effects is examined experimentally and previous descriptions reviewed. Measures are adopted to minimise the effects and so achieve maximum economy of drug administrations and subjects. The method is exemplified by comparisons of activity of different preparations of triprolidine and of cyclizine and chlorcycline.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00565009
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  • 2
    Electronic Resource
    Electronic Resource
    The thermal degradation of perfluoropolypyridine (1971)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 15 (1971), S. 317-325 
    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: The thermal degradation of perfluoropolypyridine was studied in inert and oxidizing atmospheres by thermogravimetric techniques. Volatile products were analyzed mass-spectrometrically, and the yield of products giving rise to fluoride ion was also determined. The stability of the polymer on a weight loss basis is rather better than that of polytetrafluoroethylene in inert atmospheres, but rather worse in oxidizing atmospheres. The major breakdown route seems to involve removal of the fluorine from the heterocyclic nucleus by a mechanism as yet unknown.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1971.070150206
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  • 3
    Electronic Resource
    Electronic Resource
    The thermal degradation of perfluoro polymers (1972)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 16 (1972), S. 739-748 
    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 number of perfluoro polymers were heated at a constant rate of temperature rise in an atmosphere of nitrogen or air, and the volatile degradation products were passed into an aqueous solution, where the F- ions produced were monitored with a fluoride ion-selective electrode. Compounds giving rise to F- ions were formed in both nitrogen and air, but in larger amounts in the latter atmosphere. For the formation of appreciable quantities of F- ions, temperatures greater than 500°C were normally necessary.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1972.070160318
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  • 4
    Electronic Resource
    Electronic Resource
    The thermal degradation of hydrofluoro polymers (1972)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 16 (1972), S. 683-693 
    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: The evolution of hydrogen fluoride (or other degradation products giving rise to Fions in aqueous solution) from a number of hydrofluoro polymers has been studied in nitrogen or air over a range of temperatures using a fluoride ion selective electrode to monitor the process. The results in an inert atmosphere illustrate the effect of chemical structure upon the relative ease of hydrogen fluoride elimination.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1972.070160313
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  • 5
    Electronic Resource
    Electronic Resource
    Thermal degradation of perfluoropolyphenylenesPresented in part at the 148th Meeting of the American Chemical Society, Chicago, Ill., September 1964 [Polymer Preprints, 5, 474 (1964)]. (1968)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 12 (1968), S. 2481-2490 
    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: The thermal degradation of meta- and para-linked perfluoropolyphenylenes in vacuo and in oxygen has been studied. Rates of breakdown were determined thermogravimetrically and products of breakdown in vacuum analyzed by using a mass spectrometer. The thermal stability in vacuo was comparable with that of polyphenylene, and that in oxygen was rather inferior to that of polytetrafluoroethylene. The higher molecular weight polymers gave as the main volatile degradation products silicon tetrafluoride and carbon dioxide, together with a carbonized residue containing virtually no fluorine.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1968.070121108
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  • 6
    Electronic Resource
    Electronic Resource
    Thermal degradation of poly(phenylene sulfide) and perfluoropoly(phenylene sulfide)Crown copyright, reproduced with the permission of the Controller, Her Majesty's Stationery Office. (1968)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 12 (1968), S. 863-870 
    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: The thermal and oxidative degradation of poly(phenylene sulfide) and perfluoropoly(phenylene sulfide) have been studied by a weight-loss method. The products of breakdown in vacuum have also been analyzed. The poly(phenylene sulfide) is more thermally stable in inert and oxidizing atmospheres than the fully fluorinated analog. The breakdown products can be accounted for by chain scission and transfer reactions. The formation of a large proportion of residue implies that crosslinking reactions play an important part in the degradation.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1968.070120421
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  • 7
    Electronic Resource
    Electronic Resource
    Studies on homologous series of oligomeric antioxidants derived from p-cresol/formaldehyde condensates. II. Evaluation in polystyrene (1972)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 152 (1972), S. 83-103 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Wirksamkeit von Verbindungen des Typs als Antioxydantien in Polystyrol wurde untersucht, und die Resultate wurden mit denen einiger kommerzieller, hochmolekularer Antioxydantien verglichen. Wie sich zeigte, hing die Wirksamkeit nicht nur vom Mol.-Gew. ab, sondern auch von der Molekularstruktur, der Konzentration und der Gebrauchstemperatur.
    Notes: The effectiveness of compounds of the type as antioxidants in polystyrene has been examined and the results compared with those for some commercial high mol. wt. antioxidants. Effectiveness was found to depend not only on mol. wt., but also on molecular structure, concentration, and temperature of use.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1972.021520111
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  • 8
    Electronic Resource
    Electronic Resource
    Studies on homologous series of oligomeric antioxidants derived from p-cresol/formaldehyde condensates. I. Synthesis and characterisation (1972)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 152 (1972), S. 67-82 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: wurden dargestellt und ihre Struktur durch Elementar-, Infrarot- und massenspektrometrische Analyse bestätigt. Im Hinblick auf ihre vorgesehene Verwendung als Antioxydantien wurde ihre Löslichkeit in Toluol gemessen und thermogravimetrische Analysen in Luft- und Stickstoffatmosphäre durchgeführt. Bei den Novolaken mit höherem Mol.-Gew. kommt es bei leicht erhöhten Temperaturen zu einer Art Kondensationsrcaktion. Diese Reaktion könnte einen Zusammenhang mit der Eigenschaft dieser Materialien als Antioxydantien haben und auch mit Hinsicht auf das Verhalten von Novolak bei der Härtung von Phenoharzen von Interesse sein.
    Notes: have been prepared and their structure confirmed by elemental, infrared and mass spectrometric analysis. In view of their proposed use as antioxidants, solubilities in toluene were measured, and all the compounds were subjected to thermogravimetric analysis in atmospheres of air and nitrogen. The higher mol. wt. novolak materials undergo some form of condensation reaction at moderately elevated temperatures. This reaction could have some relevance to their properties as antioxidants and is also of interest with respect to the behaviour of novolak materials in the hardening of phenolic resins.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1972.021520110
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  • 9
    Electronic Resource
    Electronic Resource
    Studies on homologous series of oligomeric antioxidants derived from p-cresol/formaldehyde condensates. III. Evaluation in an ethylene/propylene copolymer (1972)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 152 (1972), S. 105-120 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Wirksamkeit von Verbindungen des Typs als Antioxydantien im Äthylen/Propylen-Copolymeren wurde untersucht ; die Resultate wurden mit denen einiger kommerzieller, hochmolekularer Antioxydantien verglichen. Wie sich zeigte, wurde durch Erhöhung des Mol.-Gew. der Beimengung die Wirksamkeit des Antioxydants erhöht und gleichzeitig das Ausmaß der Beeinflussung durch Härtung verringert. Ein Vergleich mit den Ergebnissen früherer Arbeiten1 ergab eine Beeinflussung der Wirksamkeit yon Antioxydantien durch die Art des Polymersubstrats.
    Notes: The effectiveness of compounds of the type as antioxidants in an ethylene/propylene (EP) copolymer has been examined and the results compared with those for some commercial high molecular weight antioxidants. Increasing the mol. wt. of the additive was found to improve its antioxidative efficiency and also to reduce the degree of interference with cure. Comparison with the results of earlier work1 showed that the efficiency of the antioxidants was affected by the nature of the polymer substrate.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1972.021520112
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  • 10
    Electronic Resource
    Electronic Resource
    Thermal degradation of polystyrene (1967)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Letters 5 (1967), S. 855-857 
    Details
    ISSN: 0449-2986
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1967.110050924
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