A composition, comprising: a population of polyetherimide particulates having a) a Dv50 value, as determined using laser diffraction analysis, for equivalent spherical sizes of the population of polyetherimide particulates, of between 45 micrometers to 80 micrometers; b) a Dv10 value, as determined using laser diffraction analysis, for equivalent spherical sizes of the population of polyetherimide particulates greater than 1 micrometer to 45 micrometers, and c) a Dv90 value, as determined using laser diffraction analysis, for equivalent spherical sizes of the population of polyetherimide particulates, from 80 micrometers to 125 micrometers, the population of polyetherimide particulates optionally being essentially free of particulates less than 1 micrometer in diameter, optionally and more preferably being essentially free of particulates less than 5 micrometers in diameter, optionally and most preferably being essentially free of particulates less than 10 micrometers in diameter, based on the equivalent spherical size of the polyetherimide particulates, the composition optionally comprising one or more fillers, stabilizers, pigments, reinforcing agents, flame retardants, anti-drip agents, or any combination thereof, and the composition being characterized as having a zero-shear viscosity sufficiently low so as to achieve a coalescence of at least 0.5, and preferably of about 1.0, as characterized by the Frenkel model at a temperature less than 450 °C. a population of polyetherimide particulates having a) a Dv50 value, as determined using laser diffraction analysis, for equivalent spherical sizes of the population of polyetherimide particulates, of between 45 micrometers to 80 micrometers; b) a Dv10 value, as determined using laser diffraction analysis, for equivalent spherical sizes of the population of polyetherimide particulates greater than 1 micrometer to 45 micrometers, and c) a Dv90 value, as determined using laser diffraction analysis, for equivalent spherical sizes of the population of polyetherimide particulates, from 80 micrometers to 125 micrometers, a) a Dv50 value, as determined using laser diffraction analysis, for equivalent spherical sizes of the population of polyetherimide particulates, of between 45 micrometers to 80 micrometers; b) a Dv10 value, as determined using laser diffraction analysis, for equivalent spherical sizes of the population of polyetherimide particulates greater than 1 micrometer to 45 micrometers, and c) a Dv90 value, as determined using laser diffraction analysis, for equivalent spherical sizes of the population of polyetherimide particulates, from 80 micrometers to 125 micrometers, the population of polyetherimide particulates optionally being essentially free of particulates less than 1 micrometer in diameter, optionally and more preferably being essentially free of particulates less than 5 micrometers in diameter, optionally and most preferably being essentially free of particulates less than 10 micrometers in diameter, based on the equivalent spherical size of the polyetherimide particulates, the composition optionally comprising one or more fillers, stabilizers, pigments, reinforcing agents, flame retardants, anti-drip agents, or any combination thereof, and the composition being characterized as having a zero-shear viscosity sufficiently low so as to achieve a coalescence of at least 0.5, and preferably of about 1.0, as characterized by the Frenkel model at a temperature less than 450 °C.