| 摘要 |
<p>The invention relates to a catalyst for the production of polyester which enables the production of a metal-free polyester resin not containing 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 limit of detection and permits isolation, recovery and reuse, namely, a solid acid catalyst for the production of polyester which is obtained by making a metal oxide (B) supported on a carrier (A) made of another metal oxide, characterized in that the carrier (A) is zirconia and the metal oxide (B) is molybdenum oxide and that the Hammet acidity function (H0) is-3 to-9; a process for the production of the catalyst; and a process for the production of polyester with the catalyst.</p> |
