Title:
ACRYLONITRILE-BASED COPOLYMER FOR CARBON FIBER
Document Type and Number:
Japanese Patent JP2012214657
Kind Code:
A
Abstract:
To provide an acrylonitrile-based copolymer in which the solubility in a solvent is improved to enhance the stability in the production process of a polyacrylonitrile-based fiber by reducing a load on a filter in a filtration process during fiber spinning.
When fractionating a component every 5 mass% based on the peak area derived from the acrylonitrile-based copolymer in a GPC measurement, the copolymer satisfies the relation, 1.30>(A)/(B)>0.80 [wherein (A) is a mass ratio of components except an acrylonitrile unit in each fractionation therafter; and (B) is a mass ratio of components except the acrylonitrile unit in the copolymer before fractionation].
Inventors:
UNOKI SAE
FUTAI TAKESHI
HIROTA NORIFUMI
AOYAMA NAOKI
NIIMEN YUSUKE
FUTAI TAKESHI
HIROTA NORIFUMI
AOYAMA NAOKI
NIIMEN YUSUKE
Application Number:
JP2011081826A
Publication Date:
November 08, 2012
Filing Date:
April 01, 2011
Export Citation:
Assignee:
MITSUBISHI RAYON CO
International Classes:
C08F220/44; D01F6/18
Attorney, Agent or Firm:
Akio Miyazaki
Ishibashi Masayuki
Masaaki Ogata
Ishibashi Masayuki
Masaaki Ogata