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Synthesis and characterization of new bivalent tin chelate of 3-hydroxy-2-methyl-4-pyrone and its use as catalyst for polyesterification

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Summary

We describe here the synthesis of a new tin chelate Sn(C6H5O3)2.2H2O. The catalytic performance of this chelate is shown for polyesterification reactions involving terephthalic acid and poliols, such as neopentylglygol and trimetilolpropane. The complex is highly active for low molecular weight (Mn= 1700 and Mw= 4500) polymer formation. IR spectra also show free OH in the polymer chain.

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Authors and Affiliations

  1. Grupo de Organometálicos, Faculdade de Química, PUCRS, Avenida Ipiranga 6681, 90619-900 Portp Alegre, RS, Brazil e-mail: einloft@pucrs.br, , , , , , BR

    A. B. De Oliveira, I. F. Jorge, P. A. Z. Suarez, N. R. De S. Basso & S. Einloft

Authors
  1. A. B. De Oliveira
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  2. I. F. Jorge
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  3. P. A. Z. Suarez
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  4. N. R. De S. Basso
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  5. S. Einloft
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Additional information

Received: 26 June 2000/Revised version: 4 October 2000/Accepted: 6 October 2000

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De Oliveira, A., Jorge, I., Suarez, P. et al. Synthesis and characterization of new bivalent tin chelate of 3-hydroxy-2-methyl-4-pyrone and its use as catalyst for polyesterification. Polymer Bulletin 45, 341–344 (2000). https://doi.org/10.1007/s002890070005

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  • DOI: https://doi.org/10.1007/s002890070005

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