COMPOSITE BICOMPONENT FIBER SHOWING VERY HIGH COLOR SATURATION AND DEERSKIN-TYPE MATERIALS MADE THEREFROM Russian patent published in 2007 - IPC D01F8/14 C14C13/00 

FIELD: polymer materials.

SUBSTANCE: invention relates to technology of synthetic fibers, in particular to producing composite bicomponent fibers of the islands-in-sea type and deerskin-type materials, in blends and stripped. In its island, polyethylene-terephthalate component, fibers comprise diol comonomer of formula I and formula II and, while its sea component is made from polyester copolymer easily soluble in alkali. Linear density of fiber varies from 0.001 to 0.5 denier. Deerskin-type materials is made completely or partly from ultrafine fibers with specified density and including indicated diol comonomer of formula I and II. Blended material and stripped material are manufactured using some parts of indicated islands-in-sea bicomponent fiber. Lower are formulas I and II: wherein R₁ and R₂ are С₁-С₃-alkyl groups and X aliphatic ring with 5-8 carbon atoms.

EFFECT: enhanced color saturation.

14 cl, 3 dwg, 1 tbl