Abstract: A polymer powder includes a polyamide, wherein a melting point determined in differential scanning calorimetry is 190° C. or higher, a difference between the melting point and a melting onset temperature, which is defined in differential scanning calorimetry as a lowest temperature among temperatures at each of which a first temperature differential value of Heat Flow (W/g) observed between a peak top temperature of an endothermic peak, observed when 10 mg of powder is heated at a rate of 20° C./min from 30° C. in a nitrogen atmosphere, and a temperature point of ?50° C. from the peak top, becomes ?0.2 (W/g.° C.), is less than 30° C., and a D50 particle size is 1 ?m or more and 100 ?m or less.

Abstract: A powder particle mixture which contains a polybutylene terephthalate resin and a polycarbonate resin, and which is characterized in that: the average particle diameter thereof is more than 1 ?m but 100 ?m or less; the uniformity thereof is 4 or less; the melting point thereof is more than 220° C.; and the difference between the melting point thereof and the crystallization temperature thereof is 60° C. or more. A powder particle composition which is characterized by containing inorganic microparticles that have an average particle diameter of 20-500 nm at a ratio of 0.1-5 parts by weight relative to 100 parts by weight of the powder particle mixture. The present invention efficiently provides a polybutylene terephthalate resin powder which is suitable as a material powder for the production of a three-dimensional shaped product by means of Selective Laser Sintering 3D printer.

Abstract: A polyarylene sulfide resin particulate has a mean particle diameter from more than 1 ?m to 100 the uniformity is 4 or less, the melt viscosity measured at temperature of 300° C. and shear rate of 1216 sec?1 is 150 to 500 Pa·s, and the recrystallization temperature, defined as temperature of the heat generation peak at the time of crystallization when cooled from 340° C. to 50° C. at 20° C./min using a differential scanning calorimeter, is 150 to 210° C. The polyarylene sulfide resin particulate is suitable as a material powder for producing a three-dimensional molding by a powder sintering three-dimensional printer can be provided efficiently.

Abstract: A method of producing polybutylene terephthalate resin shaped moldings includes supplying a 3D printer with a polybutylene terephthalate resin powder mixture that contains 100 parts by weight of a polybutylene terephthalate resin powder material having a mean diameter of more than 1 ?m and 100 ?m or less, a uniformity coefficient of 4 or less, and a terminal carboxyl group quantity of 35 eq/t or more and 50 eq/t or less, and 0.1 to 5 parts by weight of inorganic particles having a mean diameter of 20 to 500 nm.

Abstract: A polyarylene sulfide resin particulate has a mean particle diameter from more than 1 ?m to 100 the uniformity is 4 or less, the melt viscosity measured at temperature of 300° C. and shear rate of 1216 sec?1 is 150 to 500 Pa·s, and the recrystallization temperature, defined as temperature of the heat generation peak at the time of crystallization when cooled from 340° C. to 50° C. at 20° C./min using a differential scanning calorimeter, is 150 to 210° C. The polyarylene sulfide resin particulate is suitable as a material powder for producing a three-dimensional molding by a powder sintering three-dimensional printer can be provided efficiently.

Abstract: A polyarylene sulfide resin powder granular article mixture enabling production of a highly heat-resistant and high-ductility three-dimensional molded article has: 5-25 parts by weight of fluorine resin powder granular article with respect to 100 parts by weight of polyarylene sulfide resin powder granular article; an average particle size of greater than 1 ?m to 100 ?m or less; an angle of repose of 43 degrees or less; and a homogeneity of 4 or less.

Abstract: A method of producing polybutylene terephthalate resin shaped moldings includes supplying a 3D printer with a polybutylene terephthalate resin powder mixture that contains 100 parts by weight of a polybutylene terephthalate resin powder material having a mean diameter of more than 1 ?m and 100 ?m or less, a uniformity coefficient of 4 or less, and a terminal carboxyl group quantity of 35 eq/t or more and 50 eq/t or less, and 0.1 to 5 parts by weight of inorganic particles having a mean diameter of 20 to 500 nm.

Abstract: A polyester resin powder mixture has a small average particle size, excellent powder flowability, and high strength after molding. The polyester resin powder mixture is obtained by blending 0.1-5 parts by weight of silica microparticles having an average particle size of 20-500 nm in 100 parts by weight of a polyester resin powder having an average particle size that is over 1 ?m and is less than or equal to 100 ?m, and that has a uniformity of 4 or less.