Conductive conjugate fiber

Abstract

A conjugated conductive fiber including a non-conductive layer and a conductive layer, in which: the non-conductive layer accounts for at least 70% of a surface of the fiber; the non-conductive layer is a polyester obtained by copolymerizing a metal sulfonate group-containing isophthalic acid and a polyalkylene glycol; and the conductive layer is a thermoplastic polymer containing titanium oxide particles each having a conductive coating film. The conjugated conductive fiber provides a polyester-based conjugated yarn high in antistatic performance and easy to handle, which can be dyed under normal pressure with improved color developing property after dying.

1 . A conjugated conductive fiber, comprising a non-conductive layer and a conductive layer,
 wherein:   the non-conductive layer accounts for at least 70% of a surface of the fiber;   the non-conductive layer comprises a polyester obtained by copolymerizing a metal sulfonate group-containing isophthalic acid and a polyalkylene glycol; and   the conductive layer comprises a thermoplastic polymer containing titanium oxide particles each having a conductive coating film.   
     
     
         2 . The conjugated conductive fiber according to  claim 1 , wherein a mixing ratio of the titanium oxide particles each having the conductive coating film in the conductive layer is 30 to 85 wt %. 
     
     
         3 . The conjugated conductive fiber according to  claim 1 , wherein a ratio of the conductive layer to the non-conductive layer is 1:30 to 2:1 in terms of an area ratio of a cross-section surface of the fiber.