▎ 摘　　要

NOVELTY - Sinterable polymer composition comprises a random copolymer of propylene and an olefinic comonomer, at least one of clarifier and a nucleator, and at least one of a primary antioxidant, a secondary antioxidant, an acid scavenger, a peroxide, an enhanced infrared energy absorber, a long-term heat agent, and a polyolefin elastomer, where the olefinic comonomer of the random copolymer is present in the random copolymer in an amount of 2-10 wt.%, and the sinterable polymer composition has a melt flow rate of 1-150 g/10 minutes (230° C/ 2.16 kg), measured according to ASTM D 1238, and a crystallization temperature (TC) of 105-150° C, and a xylene solubles content (XS) of 3-40%, measured according to ASTM D5492-17. USE - The sinterable polymer composition is used in an article and a powder (all claimed). ADVANTAGE - The sinterable polymer composition has improved mechanical properties, such as impact resistance and toughness. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) (1) a distribution of pellets, each pellet comprising the sinterable polymer composition; (2) (2) a powder comprising the sinterable polymer composition; (3) (3) an article, which is formed from the sinterable polymer composition, by powder bed function based three-dimensional printing; and (4) (4) a method for an additive manufacturing, involving (i) depositing a layer of the sinterable polymer composition to a printing apparatus, (ii) irradiating the sinterable polymer composition at a temperature which sinters the sinterable polymer composition and causes at least a portion of the sinterable polymer composition to fuse and form a first printing layer, (iii) repeating steps (a) and (b) to form a second printing layer on the first printing layer, and (d) optionally forming at least one or more further printing layer(s) on the second printing layer.