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1.发明公开CATALYST FOR PRODUCING POLYESTER, PROCESS FOR PRODUCING THE SAME, AND PROCESS FOR PRODUCING POLYESTER BY USING THE SAME 失效催化剂聚酯用于生产;聚酯使用上述催化剂的生产，加工，工艺
公开(公告)号：EP0909775A4
公开(公告)日：2000-02-09
申请号：EP98909843
申请日：1998-03-24
Applicant: TORAY INDUSTRIES
Inventor： AOYAMA MASATOSHI , TUTUMI KENICHI , UCHIDA MINORU
Abstract: The present invention relates to a polyester polymerization catalyst, comprising a solution containing an aluminum compound and an alkali compound, with water or an organic solvent or a mixture consisting of water and an organic solvent as the medium, a production method thereof, and a polyester production method, in which the product obtained by the esterification reaction or ester interchange reaction between an aromatic dicarboxylic acid or any of its ester forming derivative and a diol is polycondensed, to produce a polyester, comprising the use of said polymerization catalyst containing an aluminum compound. The present invention can provide a polyester excellent in processability and can overcome such problems as spinneret contamination, filtration pressure rise, filament breaking, film breaking and foreign matter production in the production process of products such as fibers, films, resins and bottles.
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