Compositions with little or no solvent comprising carbon nanotubes and at least one polymer

A composition comprising carbon nanotubes and at least one polymer, in a carbon nanotubes/polymer mass ratio of less than 100/5, said composition being in the form of a powder of loose bulk density of between 0.11 and 0.5 g/cm3, having an apparent specific surface area of between 50 and 350 m2/g measured with the aid of a Micromeritics ASAP 2460 instrument and a content by mass of solvent of less than 10%, wherein the polymer is chosen from modified polysaccharides, polyvinylpyrrolidone homopolymers or copolymers, the loose bulk density (LBD) being defined by the ratio of the mass of powder and its volume after having been loosened, the measurement being performed by measuring the maximum volume occupied by the powder in a 100 cm3 closed graduated cylinder of mass T turned over several times slowly with weighings performed using a balance accurate to 0.1 g and filling the cylinder to three-quarters and then weighed to give a mass m1, closed, and then slowly turned over several times until the maximum volume occupied by the powder, denoted v, in cm3, is obtained, resulting in an loose bulk density expressed in g/cm3 and calculated by the following formula LBD=(m1−T)/v.