METHOD FOR PREPARING ISOTROPIC PITCH HAVING HIGH SOFTENING POINT, AND CARBON FIBER COMPRISING SAME

WIPO Patent Application WO/2018/088765

A1

The present invention relates to a method for preparing an isotropic pitch, having a high softening point, for a carbon fiber. Specifically, disclosed is a method for preparing a pitch, comprising a step of heat treating a carbon material under a mixture gas atmosphere comprising an oxidative gas and an inert gas. According to the present invention, the method for preparing a pitch can obtain a pitch having a high softening point without a complex process or the help of a catalyst, and thus processing costs can be effectively lowered. In addition, an isotropic pitch having a high softening point, prepared by the method for preparing a pitch according to the present invention, has excellent spinnability when used as a precursor of a carbon fiber, and an isotropic carbon fiber obtained therefrom also has excellent physical properties so as to be usable as an important material throughout industries such as automobiles, aerospace, construction and civil engineering, electronics and electric power, sustainable energy, and environment.

JEON YOUNG- PYO (KR)
KO SEUNG HYUN (KR)
CHOI JONG EUN (KR)
LEE CHUL WEE (KR)
LEE JEA UK (KR)
IM JI SUN (KR)
KIM JONG GU (KR)
BAI BYONG CHOL (KR)
SONG BYUNG JIN (KR)

PCT/KR2017/012488

May 17, 2018

November 06, 2017

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KOREA RES INST CHEMICAL TECH (KR)

C10C3/00; C10C3/04; D01F9/155

JPH07194966A	1995-08-01
KR20160009812A	2016-01-27
KR20130110942A	2013-10-10
JP2005281490A	2005-10-13
JPH11131076A	1999-05-18

LEE, Won Hee (KR)

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