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 an ester-forming derivative thereof and a glycol, the polycondensation catalyst being obtained by hydrolyzing a water soluble titanium compound in the absence of a water soluble alkali in an aqueous slurry in which particles of a solid base are dispersed thereby to form on the surface of the particles of the solid base a coat layer of titanic acid in a content of from 0.1 to 50 parts by weight in terms of TiO2 per 100 parts by weight of the solid base. The invention further provides a method for producing such a polycondensation catalyst, and polyester obtained using such a polycondensation catalyst. |
申请公布号 |
US2012172571(A1) |
申请公布日期 |
2012.07.05 |
申请号 |
US201013394672 |
申请日期 |
2010.09.10 |
申请人 |
TABATA KEIICHI;KAMON AKIHIRO;NAITO JUN;IKEGAWA KEIICHI |
发明人 |
TABATA KEIICHI;KAMON AKIHIRO;NAITO JUN;IKEGAWA KEIICHI |
分类号 |
C08G63/672;B01J21/06;B01J21/10;B01J35/02;B01J37/02;C08G63/85 |
主分类号 |
C08G63/672 |
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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