Phosphate-containing catalysts composition for the preparation of polyesters, and related processes

Banach, T. E.; Fiorini, M.; Patel, B. R.; Pilati, Francesco; Berti, C.; Marianucci, E.; Messori, Massimo; Colonna, M.; Toselli, M.

Polyesters having relatively low melt viscosities and without excessive level of undesirable reaction byproducts in short reaction times are prepd. from a dicarboxylic acid/ester/ester-forming deriv. and a dihydroxy compd. in the presence of a catalyst compn. comprising a Ti-based compd., a Zr-based compd. and a phosphate. Thus, poly(butylene terephthalate) was prepd. from 705 g di-Me terephthalate and 458 g 1,4-butanediol, using tetra-Bu titanate, Zr tetrakis(2,4-pentanedionate), and sodium dihydrogen phosphate at 0.8 mmol Ti and Zr compds. per mmol di-Me terephthalate and 245°.

Phosphate-containing catalysts composition for the preparation of polyesters, and related processes / Banach, T. E.; Fiorini, M.; Patel, B. R.; Pilati, Francesco; Berti, C.; Marianucci, E.; Messori, Massimo; Colonna, M.; Toselli, M.. - .

Data di concessione:	2000
Titolo:	Phosphate-containing catalysts composition for the preparation of polyesters, and related processes
Autore/i:	Banach, T. E.; Fiorini, M.; Patel, B. R.; Pilati, Francesco; Berti, C.; Marianucci, E.; Messori, Massimo; Colonna, M.; Toselli, M.
Autore/i UNIMORE:	BANACH T. E. FIORINI M. PATEL B. R. PILATI, Francesco BERTI C. MARIANUCCI E. MESSORI, Massimo COLONNA M. TOSELLI M. mostra contributor esterni nascondi contributor esterni
Abstract:	Polyesters having relatively low melt viscosities and without excessive level of undesirable reaction byproducts in short reaction times are prepd. from a dicarboxylic acid/ester/ester-forming deriv. and a dihydroxy compd. in the presence of a catalyst compn. comprising a Ti-based compd., a Zr-based compd. and a phosphate. Thus, poly(butylene terephthalate) was prepd. from 705 g di-Me terephthalate and 458 g 1,4-butanediol, using tetra-Bu titanate, Zr tetrakis(2,4-pentanedionate), and sodium dihydrogen phosphate at 0.8 mmol Ti and Zr compds. per mmol di-Me terephthalate and 245°.
Handle:	http://hdl.handle.net/11380/467696
Enti collegati:	General Electric Company, USA
Rilevanza:	Internazionale
Numero di deposito:	US6043335
Tipologia	Brevetto

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