CATALYST FOR POLYESTER PRODUCTION, PROCESS FOR PRODUCING POLYESTER USING THE CATALYST, POLYESTER OBTAINED BY THE PROCESS, AND USES OF THE POLYESTER

CATALYST FOR POLYESTER PRODUCTION, PROCESS FOR PRODUCING POLYESTER USING THE CATALYST, POLYESTER OBTAINED BY THE PROCESS, AND USES OF THE POLYESTER

PURPOSE: A catalyst for polyester production capable of producing a polyester with high catalytic activity and a process for producing a polyester using the catalyst is provided. CONSTITUTION: A catalyst for polyester production comprises a solid titanium compound which is obtained by dehydro-drying...

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Bibliographische Detailangaben
Hauptverfasser: IMUTA JUNICHI, SAKAI MASAYUKI, NAKAMACHI KOJI, SHIMIZU AKIYOSHI, TOYOTA KAZUO, TSUGAWA MICHIO, FUKUTANI KENZABUROU, NODA SEIJI, ONOGI TAKAYUKI, OHMATSUZAWA TAKESHI, HIRAOKA SHOJI, MIYAZOE SATORU, HORI HIDESHI, EHARA FUJITO
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:PURPOSE: A catalyst for polyester production capable of producing a polyester with high catalytic activity and a process for producing a polyester using the catalyst is provided. CONSTITUTION: A catalyst for polyester production comprises a solid titanium compound which is obtained by dehydro-drying a hydrolyzate obtained by hydrolysis of a titanium halide and which has a molar ratio (OH/Ti) of a hydroxyl group (OH) to titanium (Ti) exceeding 0.09 and less than 4. The polyester is obtained by polycondensing an aromatic dicarboxylic acid or an ester-forming derivative thereof and an aliphatic diol or an ester-forming derivative thereof in the presence of a catalyst for polyester production which comprises a polycondensation catalyst component comprising a solid titanium compound and a co-catalyst component comprising a magnesium compound. This polyester has a titanium content of 1 to 100 ppm, a magnesium content of 1 to 200 ppm and a weight ratio (Mg/Ti) of magnesium to titanium of not less than 0.01.