tot are charged to a stirred reactor where the temperature is increased from 150 u00b0 c to 220 u00b0 c over a period of 30 to 90 minutes methanol and water formed during the reaction is distilled from the reaction mixture pressure is then gradually reduced to about 0 20 mm hg as the temperature is increased to 240 u00b0 250 u00b0 c for an additional 60 to 180 minutes the resulting polymer is removed from the reactor and allowed to cool the results along with compositional data are set forth in table 1 below table 1__________________________________________________________________________example 1 2 3 4 5 6 7__________________________________________________________________________compositiondmt sup a 388 388 9977 9977 388 11713 11713bd sup b 300 300 7710 8163 300 9035 9035aeb sup c 7 3 15 6 188 420 13 tot sup d 0 5 0 5 15 15 0 5 17 17paba sup e 117 59propertiesmeg amine sup f 63 127 63 155 45 18mv sup g 990 1720 250 3272 5736__________________________________________________________________________ sup a dimethyl terephthalate grams sup b butanediol grams sup c pamino ethyl benzoate grams sup d tetra2 ethyl titanate cc sup e pamino benzoic acid grams sup f amine number sup g melt viscosity measured using a tinium olsen melt indexer at 250 u00b0 c 0 042 inch orifice astm method d1238 poise from the above table it can be seen that increased amounts of the aromatic.