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  • 1
    Electronic Resource
    Electronic Resource
    Some properties of rigid polyurethane foam obtained from oligoglycerooxalate (1973)
    Springer
    Mechanics of composite materials 9 (1973), S. 650-650 
    Details
    ISSN: 1573-8922
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The dependence of the modulus of elasticity and compressive strength on the apparent density has been found for polyurethane foam based on oligoglycerooxalate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00855910
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesis of oligoesters from oxalic acid and glycerol (1976)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 14 (1976), S. 2631-2638 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A new synthesis for the polycondensation of oxalic acid and glycerol was used. Polycondensation was carried out in the presence of compounds that do not dissolve oxalic acid and glycerol, but form an azeotropic mixture with water below 100°C. Anhydrous oxalic acid and oxalic acid dihydrate was used for the synthesis of oligoesters. The decarboxylation proceeds parallel with polycondensation of oxalic acid and glycerol was investigated. Decarboxylation of carboxyl groups of glycerol monooxalate was found to be accelerated by the arrangement of primary and secondary hydroxyl groups in the glycerol molecule in the 1,2 position.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1976.170141104
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