Preparation of polyester, useful as packaging or constructional material or fiber, using metal complex as catalyst, does not require solid-phase polycondensation step

摘要

Method for preparing polyester (A) using at least one metal complex (I) as catalyst. Method for preparing polyester (A) using at least one metal complex of formula (I) as catalyst. (R1O)(R2O)(R3O)(R4O)M (I) M = titanium, zirconium or hafnium; R1-R4 = hydrogen, -PO(OR'1)(OR'2), -PO(R5)(OR'3), SO2R'4, CR6=X, CR7=CR8-CR9=X, P(X)(OR11)(OR10), P(X)=CR12R13, P(O)(OH)-O-P(X)(OR'5)(OR'6), P(O)(OR'7)-O-P(X)O, -CR14R'8-C(X)-O- A+, or optionally substituted aryl, alkyl, alkenyl, aminoalkyl or (N-alkylenediamino)alkyl, or R1 with R2, R3 or R4, or R2 with R3 or R4, or R3 with R4 form at least one bridging ligand -P(O)(OR15-O-P(O)(OR16)-; A = alkali metal or ammonium; R5-R16 = hydrogen, P(O)(OR'9)(OR'10), (H)P(O)OR'11, SO2R'12, or optionally substituted alkyl or aryl; R'1-R'12 = optionally substituted alkyl or aryl; and X = oxygen or sulfur; with the proviso that at least one of R1-R4 is other than hydrogen, alkyl or aryl.