Synthesis of intermediate for Gemini surfactant using waste polyester

In order to reduce the pollution produced by polyester fiber wastes and promote resource recycling,the alkyl chlorides with long chain,which is the intermediate for Gemini surfactant,was synthesized from the starting materials including waste polyester,ethylene glycol and chlorinated sulfoxide with toluene as solvent and N,N dimethyl formamide as catalyst.The influence of material ratio,reaction time and temperature,and amount of catalyst on the yield of resulting product was investigated. The products were characterized by IR and~1H-NMR.The experimental results revealed that the optimum reaction conditions are as follows: the material ratio is 1∶2.4,reacting at(64 ℃) for(3 h) with the amount of catalyst of 4%.