FIELD: chemistry.
SUBSTANCE: invention relates to production of polyamide resins in powder form. Spheroidal particles of polyamide or copolyesteramide with average diametre between 460 and 100 mcm are obtained through polymerisation in a solvent. The reaction medium is mixed with mineral filler - silica with average particle diametre between 1 and 30 µm. Polyamide or copolyester amide is obtained in powder form. The obtained powder is used to make coatings, ink compositions, paint compositions, cosmetic compositions, pharmaceutical compositions and alloys with metal powder or metal oxide powder. The polyamide or copolyester amide powder is used to make articles through oligomerisation by melting using a laser beam (laser sintering), infrared or UV radiation.
EFFECT: invention enables to obtain polyamide powder in form of particles with grain-size composition with average diametre between 60 and 100 mcm.
18 cl, 15 ex, 1 tbl, 1 dwg
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