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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 318 (1976), S. 96-104 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Poly-n-alkyl-methylsiloxanes: Effective Cloud Point and Pour Point Depressants for Petroleum DistillatesLinear poly-n-alkyl-methylsiloxanes of the formulae (CH3)3Si-[OSi(CH3)R]n-OSi(CH3)3 with R = C12H25, C14H29, C16H33 and n ≤ 8 were prepared by various synthetic methods. Both these substances and the analogous cyclic siloxane derivates [OSi(CH3)R]m (m = 3…6) were found to be effective cloud point and pour point depressants for petroleum middle distillates.Some ideas concerning the mechanism of could point depression are discussed.
    Notes: Nach verschiedenen Synthesemethoden wurden lineare Poly-n-alkylmethylsiloxane (CH3)3-[OSi(CH3)R]n-OSi(CH3)3 mit R = C12H25, C14H29, C16H33 und n ≤ 8 hergestellt. Sie erwiesen sich in Erdölmitteldestillaten ebenso wie die analogen cyclischen Siloxanderivate [OSi(CH3)R]m (m = 3…6) als wirksame Stockpunkterniedriger und zeigten darüber hinaus die relativ seltene Fähigkeit der BPA-Punktdepression.Einige Überlegungen zum Wirkungsmechanismus der BPA-Punktdepression werden mitgeteilt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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