发明名称 |
CATALYST FOR POLYESTER PRODUCTION, PROCESS FOR PRODUCING POLYESTER USING THE CATALYST, POLYESTER OBTAINED BY THE PROCESS, AND USES OF THE POLYESTER |
摘要 |
The present invention provides a catalyst or polyester production capable of producing a polyester with high catalytic activity and a process For producing a polyester using the catalyst. The 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 present invention also provides a method to obtain a polyester having a small increase of the acetaldehyde content during the molding. This method comprises bringing a polyester, which is obtained by the use of a titanium compound catalyst and in which the reaction has been completed, into contact with a phosphoric ester aqueous solution or the like having a concentration of not less than 10 ppm in terms of phosphorus atom. The present invention further provides a polyester having excellent transparency and tint and molded products of the polyester such as a blow molded article, arm, a sheet and a fiber. 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.
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申请公布号 |
US2002137879(A1) |
申请公布日期 |
2002.09.26 |
申请号 |
US20010024319 |
申请日期 |
2001.12.21 |
申请人 |
MITSUI CHEMICALS, INC. |
发明人 |
OHMATSUZAWA TAKESHI;EHARA FUJITO;HORI HIDESHI;TOYOTA KAZUO;FUKUTANI KENZABUROU;IMUTA JUNICHI;SHIMIZU AKIVOSHI;ONOGI TAKAYUKI;NODA SEIJI;SAKAI SAYUKI;HIRAOKA SHOJI;NAKAMACHI KOJI;TSUGAWA MICHIO;MIYAZOE SATORU |
分类号 |
C08G63/183;C08G63/82;C08G63/85;C08G63/88;(IPC1-7):C08G63/78;B01J31/00 |
主分类号 |
C08G63/183 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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