FIELD: chemistry.
SUBSTANCE: invention relates to composites, namely to powders and products containing silver nanoparticles dispersed in a composite matrix for use in selective laser sintering (SLS). Composite powder for use in selective laser sintering contains a matrix of sulfonated complex polyester containing alkaline salt of polymer selected from a group consisting of poly(1,2-propylene-5-sulfoisophthalate), poly(neopentylene-5-sulfoisophthalate), poly(diethylene-5-sulfoisophthalate), copoly-(1,2-propylene-5-sulfoisophthalate)-copoly-(1,2-propylene-terephthalate-phthalate), copoly-(1,2-propylene-diethylene-5-sulfoisophthalate)-copoly-(1,2-propylene-diethylene-terephthalate-phthalate), copoly(ethylene-neopentylene-5-sulfoisophthalate)-copoly-(ethylene-neopentylene-terephthalate-phthalate) and copoly(propoxylated bisphenol A)-copoly-(propoxylated bisphenol A-5-sulfoisophthalate), and a set of silver nanoparticles dispersed in a matrix. Silver nanoparticles are present in composite powder in the amount from 0.5 ppm by weight to 50,000 ppm by weight. Composite powder has a particle size from more than 25 mcm to 300 mcm. A three-dimensional product is also described, which is solid film obtained by selective laser sintering from composite powder.
EFFECT: providing powder with antibacterial properties suitable for use in selective laser sintering for obtaining films.
4 cl, 3 dwg, 5 ex
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