▎ 摘　　要

NOVELTY - A solids-incorporating polymer is manufactured by (I) providing an aqueous dispersion comprising polymer particles having an intensity-based harmonic mean particle size of the hydrodynamic diameter (Z-Average), as determined by dynamic light scattering, of less than or equal to 500 nm; (II) storing the dispersion at a temperature of less than or equal to 0 degrees C until a precipitate is formed; (III) isolating the precipitate; and (IV) removing water from isolated precipitate to obtain a water-depleted precipitate. The dispersion of step (I) further comprises inorganic particles and that the polymer is a crystallizing polyurethane. USE - Manufacture of solids-incorporating polymer for solid particulate composition used as build material in an additive manufacturing process, as a coating, as an adhesive or as a rubber (all claimed). ADVANTAGE - The method incorporates particulate materials into polymers where the end-product is a filled polymer solid. The method provides a simplified method of compounding polymers with particulate fillers without the need of heating the polymer and adding the inorganic particles to the molten polymer. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for solid particulate composition comprising a matrix of a crystallizing polyurethane, where the number-based mean particle of the composition, as determined by optical microscopy, is less than or equal to 10 mm and that inorganic particles are embedded within the matrix, the embedded inorganic particles have an number-based mean particle size, as determined by electron microscopy, of less than or equal to 1000 nm.