FIELD: chemistry.
SUBSTANCE: polyamide can be obtained through polymerisation in the presence of at least: (i) monomers of dibasic carboxylic acids and diamines, or salts thereof; (ii) 0.05-0.5 mol % polyfunctional compound containing at least 3 functional groups XI, with respect to the total number of moles of monomers which form polyamide; (iii) 0.2-2 mol % monofunctional compound containing one functional group X2, with respect to the total number of moles of monomers which form polyamide. Functional groups X1 and X2 are functional groups of carboxylic acids or amine groups which can react with monomers of dibasic carboxylic acids and diamines (i) and form an amide bond. When the polyfunctional compound (ii) contains functional groups X1 of the carboxylic type, the monofunctional compound (iii) contains a functional group X2 of the carboxylic type; and when the polyfunctional compound (ii) contains functional groups X1 of the amine group type, the mononfunctional compound (iii) contains a functional group X2 of the amine group type.
EFFECT: obtained polyamide has high fluidity and improved mechanical properties.
21 cl, 5 ex, 4 tbl
