| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing polycondensation catalyst for polyester production, capable of eliminating clogging of a polymer filter to enhance productivity of the polyester without deteriorating the quality of the polyester.SOLUTION: A method for manufacturing polycondensation catalyst for polyester production contains a reaction product obtained by reacting a phosphorus compound and a titanium compound in an organic solvent. The method is characterized in that the reaction product is obtained by ultrasonic treatment. |
