Synthesis of copolyester used textile pulp

The differential property copolyester which can be dissolved in water is synthesised with lots of experiments.Through the sizing experiments,the viscosity and viscosity stablity measuremens and DSC analysis,we can conclude that the copolyester is absolutly satisfied for sizing.In the process of producing copolyester,some scale inhibitor is added,and the unsoluble substance in solution is decreased largely.