IMPROVED FIBER FROM POLYLACTIC ACID Russian patent published in 2017 - IPC D01F8/14 D01F8/06 D01D5/34 D01F1/10 D04H3/11 D04H1/4382 

FIELD: chemistry.

SUBSTANCE: multicomponent fiber includes an inner component surrounded by a distinct component of the shell. The inner component is formed of polylactic acid, and shell component is formed by polymer additive, which increases toughener. Configuration of fiber, which comprises an inner portion/shell attaches many different useful properties to obtained fibers. Introduction of polymeric additive, which increases toughness of fiber, increases energy absorption capability stresses, arising during fiber drawing, which increases the overall rigidity and strength of the fibers. Moreover, the presence in the shell of additive component, which increases toughness, increases the binding with other fibers, e.g., during the formation of nonwoven webs. Another advantageous effect of the invention is that the configuration of the inner part/shell can be obtained from the thermoplastic composition, in which polylactic acid and a polymer additive, that increases the impact strength, are mixed with each other.

EFFECT: receiving fibers from polylactic acid having good parameters elongation and high strength.

20 cl, 8 dwg, 10 tbl, 55 ex