公开(公告)号：EP3202962A4

公开(公告)日：2018-05-16

申请号：EP15846045

申请日：2015-09-28

申请人： KURARAY CO

发明人： OKAMOTO TETSUYA ,  UEHATA AKIHIRO ,  KATSUYA SATOSHI

IPC分类号： D01F6/94 ,  D01F1/04 ,  D01F6/74 ,  D03D15/00 ,  D03D15/12 ,  D04H1/4326 ,  D04H1/46

CPC分类号： D01F6/78 ,  D01D1/02 ,  D01D5/08 ,  D01F1/04 ,  D01F6/74 ,  D03D15/00 ,  D03D15/12 ,  D04H1/4326 ,  D04H1/46 ,  D10B2331/06

摘要： Provided is a polyetherimide-based fiber containing a polyetherimide resin and carbon black dispersed in the resin, wherein the content of the carbon black is 0.03 wt% or greater; the carbon black has a primary particle number-mean particle size of from 30 nm to 500 nm; and the fiber has a weight reduction rate of less than 0.5% around the glass transition point (Tg) of the polyetherimide resin, where the weight reduction rate is defined by a following formula (1). Weight reduction rate % = fiber weight at temperature T 1 ˆ’ fiber weight at temperature T 2 / fiber weight at temperature T 1 × 100 Where T1 denotes a temperature (Tg - 15°C) that is 15°C lower than the glass transition point (glass transition temperature) of the polyetherimide resin, and T2 denotes a temperature (Tg + 25°C) that is 25°C higher than the glass transition point.