发明名称 |
Polycondensation Catalyst for Producing Polyester and Method for Producing Polyester Using the Same |
摘要 |
The invention provides a polycondensation catalyst for producing polyester by an esterification reaction or a transesterification reaction between a dicarboxylic acid or ester-forming derivative thereof and a glycol, wherein the polycondensation catalyst comprises particles of a solid base having on their surfaces either a coat layer of titanic acid in an amount of from 0.1 to 50 parts by weight in terms of TiO2 per 100 parts by weight of the solid base, or an inner coat layer of an oxide of at least one element selected from silicon, aluminum and zirconium or a composite oxide of at least two elements selected from silicon, aluminum and zirconium in an amount of from 1 to 20 parts by weight per 100 parts by weight of the solid base and an outer coat layer of titanic acid in an amount of from 0.1 to 50 parts by weight in terms of TiO2 per 100 parts by weight of the solid base
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申请公布号 |
US2010041913(A1) |
申请公布日期 |
2010.02.18 |
申请号 |
US20060086247 |
申请日期 |
2006.06.28 |
申请人 |
UMABA TOSHIKATSU;SHIMIZU HIROMITSU;MORI KENJI;TABATA KEIICHI |
发明人 |
UMABA TOSHIKATSU;SHIMIZU HIROMITSU;MORI KENJI;TABATA KEIICHI |
分类号 |
C07C67/465;B01J21/02;B01J21/06;B01J23/00;B01J23/02;B01J27/236;C07C67/03 |
主分类号 |
C07C67/465 |
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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