POLYMER MATERIALS Russian patent published in 2020 - IPC C08J3/205 C08K5/3412 D01F1/10 

FIELD: polymer materials.

SUBSTANCE: present invention relates to introduction of additives, for example dyes, into polymer materials using a liquid composition. Liquid composition for addition to polymer material, which contains carrier, additive, for example, dye, and carbonyl-bis(1-caprolactam), hereinafter referred to as CBC, wherein the support has a flash point equal to at least 285 °C, weight retention of more than 85 wt % and number average molecular weight, lying in range from 750 g/mol to 1250 g/mol; and/or carrier is liquid at standard values of temperature and pressure, has a boiling point at atmospheric pressure equal to 760 mm Hg, which is higher than 300 °C, but below 1150 °C, and melting point is below 0 °C.

EFFECT: invention improves mechanical properties, and also significantly increases pressure in spinning head, which increases fiber stability during spinning and minimizes filaments breaks.

32 cl, 16 ex, 3 tbl, 1 dwg