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Abstract
Chelate tetra(acetylacetonato) tin (IV) was prepared and used as catalyst for polytrimethylene terephthalate synthesis. It exhibited higher catalytic activity than tetrabutyl titanate, butyltinhydroxide oxide and dibutyltin oxide. Decrease in reaction time, content of terminal carboxyl group, color intensity and increase in intrinsic viscosity were observed. The unique molecular structure can be considered as factor remarkably improving the catalytic activity of tetra(acetylacetonato) tin (IV).
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