| 摘要 |
<p>A novel polycondensation catalyst which is not an antimony compound. The polycondensation catalyst is a polymerization catalyst for polyester production which comprises an aluminum compound and a phosphorus compound having a specific structure. Also provided are a polyester produced with the polymerization catalyst; a process for producing a polyester; and a fiber, a film, and a hollow molding each made of the polyester.</p> |
