Table 1.

Typical results of the catalyst screening test for the melt polycondensation of OLLA Reprinted with permission from ref. [40]. Copyright 2000 John Wiley & Sons, Inc.

Run	Catalyst	Catalyst/OLLA (wt%)	Temperature (°C)	Time (h)	Pressure (torr)	MW (g/mol)	Yield (%)
1	GeO2	0.8	180	20	10	28,000	73
2	Sb2O3	0.1	200	30	20	20,000	25
3	ZnO	0.1	200	30	20	36,000	35
4	Fe2O3	0.1	200	8	1	20,000	23
5	Al2O3	8.5	200	30	20	27,000	42
6	SiO2	0.8	180	20	10	11,000	58
7	TiO2	0.8	180	20	10	11,000	64
8	SnO	0.2	180	20	10	50,000	36
9	SnCl2·2H2O	0.4	180	20	10	41,000	43
10	TSA	0.34	180	10	10	17,000	70