POLYESTER POLYMERIZATION CATALYST AND METHOD FOR PRODUCING POLYESTER USING SAME

摘要

Provided are a polymerization catalyst with which such a polyester that the generation of foreign materials caused by the catalyst or mold pollution at the time of molding are reduced and the thermal stability and the color tone of the polymer are superior remarkably in comparison to conventional products can be obtained, and a method for producing a polyester using the same. Provided are a polyester polymerization catalyst to be obtained by making a titanium compound and mannitol react together in a molar ratio of titanium atom to mannitol of from 1:1 to 1:3 and a method for producing a polyester using the catalyst.