and solidified polymer was comminuted and a portion was molded into a cylindrical plug for melt spinning filaments from copolyesters of chlorohydroquinone chq terephthalic acid tpa and 6 hydroxy 2 naphthoic acid 2 6hna ______________________________________polymerization ingredientsgrams used mol percentex chq tpa 2 6hna chq tpa 2 6hna______________________________________1a 9 6 5 6 64 4 6 40 40 201b 119 8 7 81 3 48 30 41 2 41 2 17 61c 109 2 7 74 1 36 22 42 5 42 5 151d 11 3 7 7 68 1 73 46 25 46 25 7 5______________________________________ percent excess polymerization conditionstemp time ex u00b0 c min pressure ______________________________________1a 270 350 28 atmospheric350 10 reducing to below 1 mm hg i e about 30 inches hg vacuum 1b 274 311 37 atmospheric311 334 30 reducing to below 1 mm hg 133pa 334 336 28 0 4 mm hg 53 pa 1c 283 310 31 atmospheric310 332 26 reducing to below 1 mm hg 133pa 332 338 28 0 4 mm hg 53 pa 1d 260 360 45 atmospheric360 365 10 reducing to below 1 mm hg 133 pa ______________________________________ when pressure is indicated as 34 reducing to below 1 mm hg 34 a vacuum gaug was used which indicated 30 inches of mercury polymer characterizations inherent stickrun viscosity solvent temp u00b0 c ______________________________________1a insoluble a 2201b 3 10 b 2181c 3 13 b 2441d insoluble a 300______________________________________filament extrusion.