| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a process for producing a catalyst for polyester production which enables the production of a metal-free polyester resin not containing a catalyst residue, and which exerts a high utility efficiency in the production and such an extremely high selectivity for polyesterification that the quantity of by-products is not more than the detection limit, and permits isolation, recovery and reuse. <P>SOLUTION: The catalyst for the polyester production obtained by the process is a solid acid catalyst including a carrier (A) composed of a metal oxide, and a metal oxide (B) supported on the carrier (A). The process is characterized in that the carrier (A) is zirconia and the metal oxide (B) is a molybdenum oxide, and that the baking temperature for obtaining the solid acid catalyst is 673 to 1,473 K. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
