| 摘要 |
PROBLEM TO BE SOLVED: To provide a catalyst solution that causes no troubles on hygiene and safety and can inhibit the precipitation of the catalyst when the solution of titanium catalyst is used as a catalyst for producing polyester. SOLUTION: The titanium catalyst solution for producing polyester is prepared by dissolving a tetra-alkoxy titanium in an ether solvent in a concentration of 0.1 to 20 wt.%. COPYRIGHT: (C)2006,JPO&NCIPI
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