公开(公告)号：US10550512B2

公开(公告)日：2020-02-04

申请号：US15509754

申请日：2015-09-11

Applicant: Mitsubishi Chemical Corporation

Inventor： Hiromi Aso ,  Mitsuhiro Hamada ,  Satoshi Nagatsuka ,  Tetsuo Takano ,  Motoi Konishi ,  Masaaki Tsuchihashi

IPC: D06M15/643 ,  D06M13/224 ,  D01F9/26 ,  D06M101/26

Abstract: An oil for a carbon fiber precursor acrylic fiber including: a hydroxybenzoate ester (A) indicated by formula (1a); an amino-modified silicone (H) indicated by formula (3e); and an organic compound (X) which is compatible with the hydroxybenzoate ester (A), in which a residual mass rate R1 at 300° C. in thermal mass analysis in an air atmosphere is 70-100 mass % inclusive, and which is a liquid at 100° C., and a carbon fiber precursor acrylic fiber bundle to which the oil for a carbon fiber precursor acrylic fiber is adhered.

公开(公告)号：US09890481B2

公开(公告)日：2018-02-13

申请号：US14646962

申请日：2013-11-22

Applicant: Mitsubishi Chemical Corporation

Inventor： Mitsuhiro Hamada ,  Hiroyuki Nakao ,  Hiromi Aso ,  Yoshitaka Kageyama

IPC: C01B31/02 ,  D01F9/22 ,  D02J13/00 ,  D06M10/02 ,  D01F9/21 ,  D06M10/00 ,  D01D10/00 ,  D01F11/06 ,  D01F6/16

CPC classification number: D01F9/21 ,  D01D10/00 ,  D01F6/16 ,  D01F9/225 ,  D01F11/06 ,  D06M10/001 ,  D06M10/025

Abstract: The purpose of the present invention is to provide a method whereby deposits which have occurred on the surfaces of a fiber bundle during flameproofing treatment of a carbon fiber-precursor acrylic fiber bundle can be efficiently removed prior to carbonization treatment at high temperature. The method for production of carbon fiber bundle includes a step in which, after a carbon fiber-precursor acrylic fiber bundle has been heated and undergone flameproofing treatment, the fiber bundle is subjected to a plasma treatment involving contact with a plasma gas in gas phase, or to an ultraviolet treatment involving irradiation with ultraviolet in gas phase; and a step in which the fiber bundle having undergone the plasma treatment or the ultraviolet treatment is subjected to a carbonization treatment.