Compositions for the production of objects using additive manufacturing

A filament formed from a polymeric material, said polymeric material comprising:

• units of an acid component and units of a glycol component,
• wherein the units of the acid component comprises from 45 mole % to 55 mole % of units derived from a first diacid, from 45 mole % to 55 mole % of units derived from a second diacid, and 0 to 4 mole % of units derived from additional acids, wherein the first diacid is terephthalic acid and the second diacid is chosen from isophthalic acid, a cyclohexanedicarboxylic acid, a naphthalenedicarboxylic acid, a stilbenedicarboxylic acid, or a combination thereof;
• wherein the glycol component is 100 mole % of units derived from cyclohexanedimethanol;
• wherein the polymeric material includes 100 mole % of the acid component and 100 mole % of the glycol component,
• wherein the polymeric material has an inherent viscosity from 0.6 dL/g to 0.7 dL/g, a density no greater than about 1.25 g/cm3, a glass transition temperature of at least about 80° C., a crystallization half-time no greater than about 300 minutes, and an inherent viscosity loss of 3% or less after being extruded through an extrusion head on a three-dimensional printer at a temperature in the range from 220° C. to 245° C. and at a rate of 7.6 mm3/s;
• and
• wherein the polymeric material is formed into a filament having a diameter in the range from 1.5 mm to 5 mm.