Bitumen emulsions are preferred over conventional pavement systems due to their biologically and environmentally acceptable formulation, safety, low viscosity, storage stability, and cost effectiveness. The present investigation deals with the systematic study to synthesize ortho-cocodi-amido toluene and four quaternary derivatives by amidation of coconut oil and ortho toluene diamine (OTD), followed by quaternization with formaldehyde, formic acid mixture, and acrylonitrile, resulted in a new quaternary compound useful as cationic emulsifier in bitumen emulsions. The roles of temperature and reaction time in determining optimum conditions were investigated as well. Emulsifying behavior of these quaternary compounds was studied by sieve residue test, settlement and storage stability test of emulsified asphalt, and water solubility. The results show that the acrylonitrile imidazolinium derivative of o-cocodi-amido toluene (VI) can be used as a rapid-medium setting emulsifier.
From Masoumeh Hassanzadeh | Leila Tayebi | Hedieh Dezfouli | Masoud Kambarani | Parviz Ahmadi Avval
(Received 15.10.2011; revised 19.12.2011)
Appeared in Tenside Surfactants Detergents 2012/03, Page 247-251
Direct link: http://www.tsd-journal.com/TS110189
Synthesis of Quaternary Derivatives of Ortho-Coco Di-Amido Toluene and Investigation of these Compounds as Cationic Bitumen Emulsifier [330 KB]
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