Polyether polyurethane elastomer material was prepared based on polypropyleneoxide glycol, toluene diisocyanate (TDI) and DEG as main base meterial, LDA and APP as flame retardants.
The free polyethylene glycol (PEG) in polyethylene oxide-polypropyleneoxide type demulsifiers is separated by extraction, determined by gravimetric analysis and identified by gas chromotography.