POLYAMIDE COMPOSITIONS CONTAINING POLYAMIDE 6,6 AND MIXTURE OF LONG-CHAIN POLYAMIDES, USE THEREOF, AS WELL AS PRODUCTS OBTAINED THEREFROM Russian patent published in 2019 - IPC C08L77/06 C08K5/98 

FIELD: chemistry.

SUBSTANCE: invention relates to a polyamide composition. Described is a polyamide composition for producing an article having improved chemical resistance, comprising: (a) at least one polyamide mixture formed from (i) polyamide 6.6, in which the amount of the end group of amine (aeg) is greater than the number of the terminal carboxylic acid group (ceg); and (ii) a mixture of a first long-chain polyamide having a viscosity value (vn) equal to x₁, and a second long-chain polyamide having a value of vn equal to x₂; (b) at least one reinforcing filler; (c) at least one heat stabilizer; and (d) at least one ionic lubricating material, where x₁ greater than x₂, and the value of vn is measured in accordance with iso 307 standard in a polyamide solution with concentration of 0.005 g/ml at temperature of 25 °C. Invention also describes use of the polyamide composition, article, and use of a mixture of a first long-chain polyamide.

EFFECT: technical result is improved chemical resistance of polyamide composition.

19 cl, 2 tbl, 5 ex