公开(公告)号：EP2808427A4

公开(公告)日：2015-06-17

申请号：EP13741255

申请日：2013-01-25

申请人： MITSUBISHI RAYON CO

发明人： ONOHARA YUKIO ,  INAGAKI TATSUHIKO ,  FUJII YASUYUKI ,  OOTSUBO MASAHIRO ,  KOBAYASHI HIDEAKI

IPC分类号： D01F6/18 ,  B01J20/26 ,  B01J20/28 ,  D01D5/247 ,  D01F6/38 ,  D04H1/073

CPC分类号： B01J20/261 ,  B01J20/28011 ,  B01J20/28023 ,  B01J20/28033 ,  B01J20/28038 ,  B01J20/28059 ,  B01J20/28061 ,  D01D5/247 ,  D01F6/18 ,  D01F6/38 ,  D04H1/43

摘要： A metal adsorption acrylic fiber wherein the strontium adsorption rate is 85% or more when the strontium adsorption rate is measured using the following measurement method. A strontium adsorption rate measurement method (strontium 0.1 ppm measurement method) involves immersing a metal adsorption acrylic fiber into an immersion fluid, collecting the immersion fluid as a testing solution 24 hours after beginning the immersion, analyzing the quantity of strontium in the testing solution, obtaining the concentration (C 1 ) (ppm) of strontium in the testing solution, creating a contrast solution, analyzing the quantity of strontium in the contrast solution as in the case with the testing solution, obtaining the concentration (C 2 ) (ppm) of strontium in the contrast solution, and calculating the strontium adsorption rate of the metal adsorption acrylic fiber by using the following equation: Strontium adsorption rate % = C 2 - C 1 / C 2 x 100.

公开(公告)号：EP2628827A4

公开(公告)日：2014-07-09

申请号：EP11832602

申请日：2011-10-13

申请人： MITSUBISHI RAYON CO

发明人： SHINMEN YUUSUKE ,  HIROTA NORIFUMI ,  NAKAJIMA ATSUSHI ,  AOYAMA NAOKI ,  MATSUYAMA NAOMASA ,  NII TAKESHI ,  KOGAME AKIYOSHI ,  FUJII YASUYUKI ,  IRIE YOSHIKO ,  MATSUDA HARUMI ,  KIRIYAMA TAKAYUKI ,  MIURA TEPPEI ,  TERANISHI TAKUYA ,  MORI SHOUHEI ,  KANEKO MANABU ,  NUMATA KIHARU ,  ICHINO MASAHIRO ,  TAKEDA SHIGEKAZU ,  KOBAYASHI TAKAYUKI ,  ITOU TOSHIYUKI ,  HATA MASAHIRO ,  NAKAO HIROYUKI ,  WATANABE KENICHI

IPC分类号： D01F6/18 ,  C08J5/04 ,  D01D5/253 ,  D01F9/22

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/L 2 (1)

公开(公告)号：EP2441865A4

公开(公告)日：2013-05-22

申请号：EP10786211

申请日：2010-06-10

申请人： MITSUBISHI RAYON CO

发明人： HASHIMOTO HIROSHI ,  SUGIURA NAOKI ,  FUJII YASUYUKI ,  MATSUMURA HIROKO ,  OKUYA TAKAHIRO ,  OOKI ISAO ,  HATA MASAHIRO ,  WAKABAYASHI KOUKI ,  KOGAME AKIYOSHI ,  SUMIYA KAZUNORI ,  HATAYAMA AKITO

IPC分类号： D01F6/18 ,  D01F6/38 ,  D01F9/22

CPC分类号： D01F6/18 ,  D01D5/247 ,  D01F9/22 ,  Y10T428/2975 ,  Y10T428/2978 ,  Y10T428/298

公开(公告)号：EP2735575A4

公开(公告)日：2014-12-17

申请号：EP12817711

申请日：2012-07-20

申请人： MITSUBISHI RAYON CO

发明人： SHINMEN YUSUKE ,  HIROTA NORIFUMI ,  AOYAMA NAOKI ,  MATSUYAMA NAOMASA ,  NII TAKESHI ,  FUJII YASUYUKI ,  IRIE YOSHIKO ,  MATSUDA HARUMI

IPC分类号： C08F220/48 ,  C08F220/44 ,  D01F6/18 ,  D01F9/22

CPC分类号： D01F9/22 ,  C08F220/06 ,  C08F220/18 ,  C08F220/20 ,  C08F220/48 ,  C08F220/56 ,  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：EP1209261A4

公开(公告)日：2004-10-06

申请号：EP00940817

申请日：2000-06-23

申请人： MITSUBISHI RAYON CO

发明人： KASABO YUKIO ,  IKEDA KATSUHIKO ,  FUJII YASUYUKI ,  MISHINA YOSHIHIKO ,  OCHI RYO

IPC分类号： D01F6/18 ,  D01F6/38 ,  D01D5/06 ,  D01D5/253

CPC分类号： D01F6/38 ,  D01D5/06 ,  D01D5/253 ,  D01F6/18 ,  Y10T428/2913 ,  Y10T428/2964 ,  Y10T428/2967 ,  Y10T428/2973 ,  Y10T428/2976 ,  Y10T428/2978

摘要： An acrylonitrile-based synthetic fiber which (a) comprises an acrylonitrile-based polymer containing acrylonitrile units in an amount of 80 wt % or more and less than 95 %, (b) has a single yarn strength in the range of 2.5 to 4.0 (cN/dtex), (c) has a single yarn elongation in the range of 35 to 50 %, (d) has a property that when a single yarn thereof is broken in a tensile test, it has a crack in its side face at the breakage having a length of 20 mu m or more along the direction of its fiber axis. The fiber is homogeneous in orientation between the surface part and the inner part thereof, has excellent property in strength, elongation and dyeability, and has a wool-like feeling, and thus extremely suitable as a synthetic fiber for a material for clothes such as a sweater, buildings or beddings such as a pile, or the like.