公开(公告)号：US10017881B2

公开(公告)日：2018-07-10

申请号：US14234225

申请日：2012-07-20

申请人： Yusuke Shinmen ,  Norifumi Hirota ,  Naoki Aoyama ,  Naomasa Matsuyama ,  Takeshi Nii ,  Yasuyuki Fujii ,  Yoshiko Irie ,  Harumi Matsuda

发明人： Yusuke Shinmen ,  Norifumi Hirota ,  Naoki Aoyama ,  Naomasa Matsuyama ,  Takeshi Nii ,  Yasuyuki Fujii ,  Yoshiko Irie ,  Harumi Matsuda

IPC分类号： D01F9/22 ,  D01F6/38 ,  C08F220/48 ,  C08F220/20 ,  C08F220/56 ,  C08F220/18 ,  C08F220/06

CPC分类号： D01F9/22 ,  C08F220/06 ,  C08F220/18 ,  C08F220/20 ,  C08F220/48 ,  C08F220/56 ,  D01D5/253 ,  D01F6/38 ,  D01F9/225 ,  Y10T428/2918 ,  C08F220/44

摘要： Provided are: a polyacrylonitrile-based precursor fiber for the production of a carbon fiber having a large single-fiber fineness, said precursor fiber ensuring high heat stability of a spinning dope and excellent productivity; and a copolymer suitable for the production of said precursor fiber. Also provided are: high-quality carbon fiber bundles which have a large single-fiber fineness and excellent productivity; a process for producing the same; and a process for producing flameproofed fiber bundles suitable for the production of the carbon fiber bundles. A polyacrylonitrile-based copolymer which comprises 93.0 to 99.4 mol % of acrylonitrile units, 0.5 to 4.0 mol % of (meth)acrylamide-based units, and 0.1 to 3.0 mol % of unsaturated carboxylic acid hydroxyalkyl ester units and in which the (meth)acrylamide-based units are (meth)acrylamide units and/or (meth)acrylamide derivative units having a molecular weight of 105 or less; a precursor fiber comprising the copolymer; a process for producing flameproofed fiber bundles which uses precursor fiber bundles consisting of the precursor fiber; carbon fiber bundles; and a process for production thereof.

公开(公告)号：US20140212663A1

公开(公告)日：2014-07-31

申请号：US14234225

申请日：2012-07-20

申请人： Yusuke Shinmen ,  Norifumi Hirota ,  Naoki Aoyama ,  Naomasa Matsuyama ,  Takeshi Nii ,  Yasuyuki Fujii ,  Yoshiko Irie ,  Harumi Matsuda

发明人： Yusuke Shinmen ,  Norifumi Hirota ,  Naoki Aoyama ,  Naomasa Matsuyama ,  Takeshi Nii ,  Yasuyuki Fujii ,  Yoshiko Irie ,  Harumi Matsuda

IPC分类号： D01F9/22 ,  C08F220/48

CPC分类号： D01F9/22 ,  C08F220/06 ,  C08F220/18 ,  C08F220/20 ,  C08F220/48 ,  C08F220/56 ,  D01D5/253 ,  D01F6/38 ,  D01F9/225 ,  Y10T428/2918 ,  C08F220/44

摘要： Provided are: a polyacrylonitrile-based precursor fiber for the production of a carbon fiber having a large single-fiber fineness, said precursor fiber ensuring high heat stability of a spinning dope and excellent productivity; and a copolymer suitable for the production of said precursor fiber. Also provided are: high-quality carbon fiber bundles which have a large single-fiber fineness and excellent productivity; a process for producing the same; and a process for producing flameproofed fiber bundles suitable for the production of the carbon fiber bundles. A polyacrylonitrile-based copolymer which comprises 93.0 to 99.4 mol % of acrylonitrile units, 0.5 to 4.0 mol % of (meth)acrylamide-based units, and 0.1 to 3.0 mol % of unsaturated carboxylic acid hydroxyalkyl ester units and in which the (meth)acrylamide-based units are (meth)acrylamide units and/or (meth)acrylamide derivative units having a molecular weight of 105 or less; a precursor fiber comprising the copolymer; a process for producing flameproofed fiber bundles which uses precursor fiber bundles consisting of the precursor fiber; carbon fiber bundles; and a process for production thereof.

摘要翻译： 提供：一种用于生产单纤维细度大的碳纤维的聚丙烯腈基前体纤维，所述前体纤维确保纺丝原液的高热稳定性和优异的生产率; 和适于生产所述前体纤维的共聚物。 还提供：具有大的单纤维细度和优异的生产率的优质碳纤维束; 其制造方法; 以及适用于制造碳纤维束的防火纤维束的制造方法。 丙烯腈系共聚物，其含有丙烯腈单元93.0〜99.4摩尔％，（甲基）丙烯酰胺系单体为0.5〜4.0摩尔％，不饱和羧酸羟烷基酯单元为0.1〜3.0摩尔％，（甲基） 基于丙烯酰胺的单元是分子量为105以下的（甲基）丙烯酰胺单元和/或（甲基）丙烯酰胺衍生物单元; 包含该共聚物的前体纤维; 制造使用由前体纤维构成的前体纤维束的防火纤维束的制造方法; 碳纤维束; 及其制造方法。

公开(公告)号：US20130295811A1

公开(公告)日：2013-11-07

申请号：US13879278

申请日：2011-10-13

申请人： Yuusuke Shinmen ,  Norifumi Hirota ,  Atsushi Nakajima ,  Naoki Aoyama ,  Naomasa Matsuyama ,  Takeshi Nii ,  Akiyoshi Kogame ,  Yasuyuki Fujii ,  Yoshiko Irie ,  Harumi Matsuda ,  Takayuki Kiriyama ,  Teppei Miura ,  Takuya Teranishi ,  Shouhei Mori ,  Manabu Kaneko ,  Kiharu Numata ,  Masahiro Ichino ,  Shigekazu Takeda ,  Takayuki Kobayashi ,  Toshiyuki Itou ,  Masahiro Hata ,  Hiroyuki Nakao ,  Kenichi Watanabe

发明人： Yuusuke Shinmen ,  Norifumi Hirota ,  Atsushi Nakajima ,  Naoki Aoyama ,  Naomasa Matsuyama ,  Takeshi Nii ,  Akiyoshi Kogame ,  Yasuyuki Fujii ,  Yoshiko Irie ,  Harumi Matsuda ,  Takayuki Kiriyama ,  Teppei Miura ,  Takuya Teranishi ,  Shouhei Mori ,  Manabu Kaneko ,  Kiharu Numata ,  Masahiro Ichino ,  Shigekazu Takeda ,  Takayuki Kobayashi ,  Toshiyuki Itou ,  Masahiro Hata ,  Hiroyuki Nakao ,  Kenichi Watanabe

IPC分类号： D01F9/12 ,  B32B37/14 ,  F27D7/00

CPC分类号： D01F9/12 ,  B29C70/44 ,  B32B37/14 ,  C08J5/042 ,  C08J5/24 ,  C08J2363/00 ,  D01D5/096 ,  D01D5/253 ,  D01F6/38 ,  D01F9/225 ,  F27D7/00 ,  Y10T428/26 ,  Y10T428/298 ,  Y10T442/3089

摘要： Provided are: a carbon fiber bundle which has a large value of single-fiber fineness and excellent productivity and which, despite this, contains few interlaced single fibers therein and has excellent spreadability; and precursor fibers which are suitable for use in producing the carbon fiber bundle. The precursor fibers are a carbon-fiber-precursor acrylic fiber bundle which comprises a polyacrylonitrile copolymer comprising 95-99 mol % acrylonitrile units and 1-5 mol % hydroxyalkyl (meth)acrylate units and which has a single-fiber fineness of 1.5-5.0 dtex. In the acrylic fiber bundle, the cross-section of each single fiber which is perpendicular to the fiber axis has a shape that has a roundness of 0.9 or less. The roundness is a value determined using equation (1) where S and L are the cross-sectional area and the circumferential length, respectively, of a single fiber which are obtained by examining, with an SEM, the cross-section of the single fiber which is perpendicular to the fiber axis and analyzing the obtained image. Roundness=4pS/L2  (1)

摘要翻译： 提供：具有大的单纤维细度值和优异的生产率的碳纤维束，尽管如此，它在其中包含很少的交错单纤维并且具有优异的铺展性; 和适用于生产碳纤维束的前体纤维。 前体纤维是碳纤维前体丙烯酸纤维束，其包含包含95-99mol％丙烯腈单元和1-5mol％（甲基）丙烯酸羟烷基酯单元的聚丙烯腈共聚物，其单纤维细度为1.5-5.0 dtex 在丙烯酸​​系纤维束中，与纤维轴垂直的各单纤维的截面为圆度为0.9以下的形状。 圆度是使用公式（1）确定的值，其中S和L分别是通过用SEM检查单根纤维的横截面而获得的单根纤维的横截面面积和圆周长度 其垂直于纤维轴并分析所获得的图像。 圆度= 4pS / L2（1）

公开(公告)号：US20110130503A1

公开(公告)日：2011-06-02

申请号：US12994526

申请日：2009-05-12

申请人： Norifumi Hirota ,  Yusuke Shinmen ,  Naomasa Matsuyama ,  Takeshi Nii ,  Harumi Shibatani

发明人： Norifumi Hirota ,  Yusuke Shinmen ,  Naomasa Matsuyama ,  Takeshi Nii ,  Harumi Shibatani

IPC分类号： C08F20/44 ,  C03C25/28 ,  B29C47/00

CPC分类号： C08F4/40 ,  C08F220/06 ,  C08F220/38 ,  C08F220/44 ,  C08F220/56 ,  D01F6/38 ,  D01F9/22

摘要： Disclosed are an acrylonitrile copolymer excellent in thermal stability as a solution (spinning dope) when dissolved in an amide solvent and capable of forming dense polyacrylonitrile fiber suitable for production of carbon fiber, an acrylonitrile copolymer solution in which the acrylonitrile copolymer is dissolved in an amide solvent, and a method for producing polyacrylonitrile precursor fiber for carbon fiber by use of the acrylonitrile copolymer solution. Specifically, an acrylonitrile copolymer contains a sulfonate group derived from a polymerization initiator in an amount of 1.0×10−5 equivalent/g or more, and the value (equivalent ratio) of (the content of a sulfate group derived from the polymerization initiator/the total content of the sulfonate group and the sulfate group) is 0.4 or less; an acrylonitrile copolymer solution contains the aforementioned acrylonitrile copolymer and an amide solvent.

摘要翻译： 公开了当溶解在酰胺溶剂中并且能够形成适合于生产碳纤维的致密聚丙烯腈纤维时的作为溶液（纺丝原液）的热稳定性优异的丙烯腈共聚物，其中丙烯腈共聚物溶解在酰胺中的丙烯腈共聚物溶液 溶剂，以及使用丙烯腈共聚物溶液制造碳纤维用聚丙烯腈前体纤维的方法。 具体地说，丙烯腈共聚物含有1.0×10 -5当量/ g以上的聚合引发剂的磺酸酯基，（来自聚合引发剂/聚合引发剂的硫酸酯基的含量） 磺酸酯基和硫酸酯基的总含量）为0.4以下; 丙烯腈共聚物溶液含有上述丙烯腈共聚物和酰胺溶剂。

公开(公告)号：US08569408B2

公开(公告)日：2013-10-29

申请号：US12994526

申请日：2009-05-12

申请人： Norifumi Hirota ,  Yusuke Shinmen ,  Naomasa Matsuyama ,  Takeshi Nii ,  Harumi Shibatani

发明人： Norifumi Hirota ,  Yusuke Shinmen ,  Naomasa Matsuyama ,  Takeshi Nii ,  Harumi Shibatani

IPC分类号： C08F20/44 ,  C03C25/28

CPC分类号： C08F4/40 ,  C08F220/06 ,  C08F220/38 ,  C08F220/44 ,  C08F220/56 ,  D01F6/38 ,  D01F9/22

摘要： Disclosed are an acrylonitrile copolymer excellent in thermal stability as a solution (spinning dope) when dissolved in an amide solvent and capable of forming dense polyacrylonitrile fiber suitable for production of carbon fiber, an acrylonitrile copolymer solution in which the acrylonitrile copolymer is dissolved in an amide solvent, and a method for producing polyacrylonitrile precursor fiber for carbon fiber by use of the acrylonitrile copolymer solution. Specifically, an acrylonitrile copolymer contains a sulfonate group derived from a polymerization initiator in an amount of 1.0×10−5 equivalent/g or more, and the value (equivalent ratio) of (the content of a sulfate group derived from the polymerization initiator/the total content of the sulfonate group and the sulfate group) is 0.4 or less; an acrylonitrile copolymer solution contains the aforementioned acrylonitrile copolymer and an amide solvent.

摘要翻译： 公开了当溶解在酰胺溶剂中并且能够形成适合于生产碳纤维的致密聚丙烯腈纤维时的作为溶液（纺丝原液）的热稳定性优异的丙烯腈共聚物，其中丙烯腈共聚物溶解在酰胺中的丙烯腈共聚物溶液 溶剂，以及使用丙烯腈共聚物溶液制造碳纤维用聚丙烯腈前体纤维的方法。 具体地说，丙烯腈共聚物含有1.0×10 -5当量/ g以上的聚合引发剂的磺酸酯基，（来自聚合引发剂/聚合引发剂的硫酸酯基的含量） 磺酸酯基和硫酸酯基的总含量）为0.4以下; 丙烯腈共聚物溶液含有上述丙烯腈共聚物和酰胺溶剂。