Abstract
In this study, an attempt has been made to synthesize esterquat by esterification of stearic acid and 3-dimethylamino-1,2-propanediol (DMAPD) followed by quaternization with dimethyl sulfate, resulted in new quaternary useful as biodegradable fabric softener (2,3-bis(stearoloxy)-propyltrimethylamine [DMAPDEQDMS]). The softening property, biodegradation of DMAPDEQDMS were investigated, and compared with distearyl dimethylammonium chloride (D1821) and other ester quaternary. The results showed that DMAPDEQDMS's biodegradation was better than that of D1821, and its softening property was comparable with D1821. It is a new style softener with excellent properties, which can replace D1821.
Kurzfassung
In dieser Arbeit wurde eine Methode zur Synthese eines Esterquats über die Veresterung von Stearinsäure und 3-Dimethylamino-1,2-propandiol (DMAPD), gefolgt von der Quaternisierung mit Dimethylsulfat entwickelt. Dabei entstand eine neue quaternäre Verbindung (2,3-Bis(stearoloxy)-propyltrimethylamin [DMAPDEQDMS]), die als biologisch abbaubarer Textilweichmacher eingesetzt werden kann. Die weichmachende Eigenschaft und die Bioabbaubarkeit von DMAPDEQDMS wurden untersucht und mit den Eigenschaften von Distearyldimethylammoniumchlorid (D1821) und anderen Esterquats verglichen. Die Ergebnisse zeigten, dass DMAPDEQDMS eine bessere Bioabbaubarkeit aufweist als D1821, seine weichmachende Wirkung ist mit der von D1821 vergleichbar. Bei DMAPDEQDMS handelt es sich um einen Weichmacher mit hervorragenden Eigenschaften, der D1821 ersetzen kann.
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