公开(公告)号：US20170191191A1

公开(公告)日：2017-07-06

申请号：US15468151

申请日：2017-03-24

Applicant: KURARAY CO., LTD.

Inventor： Tetsuya OKAMOTO ,  Akihiro UEHATA ,  Satoshi KATSUYA

IPC: D01F6/78 ,  D04H1/46 ,  D04H1/4326 ,  D01D1/02 ,  D01D5/08

Abstract: 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 T1)−(fiber weight at temperature T2)]/(fiber weight at temperature T1)}×100  (1) 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.

公开(公告)号：US20230366130A1

公开(公告)日：2023-11-16

申请号：US18358307

申请日：2023-07-25

Applicant: KURARAY CO., LTD.

Inventor： Satoshi KOIZUMI ,  Akihiro UEHATA ,  Tetsuya TOMOSUGI

IPC: D01F6/30 ,  B01D39/16 ,  D01F8/06 ,  D01F6/62

CPC classification number: D01F6/30 ,  B01D39/1623 ,  D01F8/06 ,  D01F6/62 ,  B01D2239/0225 ,  B01D2239/0233 ,  B01D2239/0618

Abstract: A fiber including olefin-based resin, wherein temperatures of the olefin-based resin losing five percent by weight and the fiber losing five percent by weight have a difference of 20 degrees Celsius or below according to thermogravimetric measurements.

公开(公告)号：US20150315725A1

公开(公告)日：2015-11-05

申请号：US14798994

申请日：2015-07-14

Applicant: KURARAY CO., LTD.

Inventor： Akihiro UEHATA ,  Tetsuya OKAMOTO ,  Takayuki IKEDA

IPC: D01F6/62 ,  C08J5/04 ,  D01D5/08 ,  D01F6/74

CPC classification number: D01F6/62 ,  C08J5/04 ,  C08J2367/03 ,  C08J2379/08 ,  C08J2467/03 ,  C08J2479/08 ,  D01D5/08 ,  D01F1/04 ,  D01F1/06 ,  D01F1/106 ,  D01F6/74 ,  D01F6/94 ,  Y10T428/249921

Abstract: Provided is a flame-retardant fiber having improved light resistance and/or colorability. The flame-retardant fiber is a fiber including a fiber-forming polymer. The fiber-forming polymer contains a polymer blend comprising a polyetherimide polymer (A) and a thermoplastic polymer (B) having a glass transition temperature lower than that of the polymer (A); and the fiber-forming polymer further contains a functional additive (C) that provides light resistance, colorability, or both of light resistance and colorability. The mass ratio (A)/(B) of the polymer (A) to the polymer (B) is from 50/50 to 90/10, and the content of the functional additive (C) is from 0.5 to 10% by mass relative to 100% by mass of the total mass (A+B+C) of the polymer (A), the thermoplastic polymer (B), and the functional additive (C).

Abstract translation: 提供了具有改善的耐光性和/或着色性的阻燃纤维。 阻燃纤维是包含成纤聚合物的纤维。 纤维形成聚合物含有包含聚醚酰亚胺聚合物（A）和玻璃化转变温度低于聚合物（A）的热塑性聚合物（B））的聚合物共混物; 并且纤维形成性聚合物还含有提供耐光性，着色性或耐光性和着色性两者的功能性添加剂（C）。 聚合物（A）与聚合物（B）的质量比（A）/（B）为50/50〜90/10，功能添加剂（C）的含量为0.5〜10质量％ 相对于聚合物（A），热塑性聚合物（B）和功能添加剂（C）的总质量（A + B + C）100质量％。

公开(公告)号：US20200173059A1

公开(公告)日：2020-06-04

申请号：US16616082

申请日：2018-05-24

Applicant: KURARAY CO., LTD.

Inventor： Tetsuya TOMOSUGI ,  Akihiro UEHATA ,  Tetsuya OKAMOTO

IPC: D01F6/60 ,  C08G69/26 ,  C08K3/16 ,  D01F1/10 ,  D01F6/80 ,  D01F6/90

Abstract: The present invention provides a semi-aromatic polyamide fiber having acid resistance and further having excellent long-term heat resistance and good spinning properties. The semi-aromatic polyamide fiber contains a semi-aromatic polyamide resin having a melting point of 280° C. or less and satisfies all of the following conditions (1) to (3): (1) in the semi-aromatic polyamide, a dicarboxylic acid component is an aromatic dicarboxylic acid, and 40 mol % to 80 mol % of a diamine component is 2-methyl-1,8-octanediamine; (2) the semi-aromatic polyamide comprises 50 ppm to 500 ppm of a copper compound in terms of copper; and (3) the semi-aromatic polyamide fiber has a peak temperature of a glass transition point from 120° C. to 140° C.

公开(公告)号：US20190309456A1

公开(公告)日：2019-10-10

申请号：US16449889

申请日：2019-06-24

Applicant: KURARAY CO., LTD.

Inventor： Akihiro UEHATA ,  Hayato HOHMAN ,  Satoshi KOIZUMI

IPC: D04H1/55 ,  D01F6/92 ,  D21H13/24 ,  D04H1/732

Abstract: The problem to be solved by the present invention is to provide a polyester binder fiber having a low crystallization temperature and exhibiting improved adhesiveness and a fiber structure including the polyester binder fiber. The polyester binder fiber according to the present invention includes a polyester polymer and an amorphous polyether imide polymer in a proportion of 0.1 to 5.0 mass % (based on the mass of the polyester polymer), and the polyester binder fiber has a crystallization temperature measured by differential calorimetry in a range of 100° C. or higher and 250° C. or lower.