METHOD FOR PRODUCING PITCH

WIPO Patent Application WO/2022/049953

A1

The present invention provides pitch for manufacturing carbon materials, the pitch having a high fixed carbon content and low viscosity and being obtained by using a petroleum-based heavy oil as a material. Pitch is produced by a method comprising: a step for preparing a material oil containing a petroleum-based heavy oil and an indene compound represented by general formula (1) (step 1); a step for thermally treating the material oil (step 2); and a step for distilling the thermally treated product and obtaining pitch as a high-boiling-point component (step 3). (In general formula (1), Ar represents an aromatic ring having 1 to 3 rings; R1 to R4 each independently represent a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or an alkenyl group having 2 to 3 carbon atoms; R5 represents an alkyl group having 1 to 3 carbon atoms or an alkenyl group having 2 to 3 carbon atoms; m represents an integer from 1 to 3; n represents an integer from 0 to 4 (when the number of rings of Ar is 1), an integer from 0 to 6 (when the number of rings of Ar is 2), or an integer from 0 to 8 (when the number of rings of Ar is 3); adjacent R5s may be bonded together to form an alicyclic ring; and a hydrogen atom is bonded to Ar which is not substituted by R5.)

ISHIKAWA YUTARO (JP)
NISHI NOBUHIRO (JP)
OTA KEISUKE (JP)

PCT/JP2021/028474

March 10, 2022

July 30, 2021

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SHOWA DENKO KK (JP)

C10C1/16; C10C3/02

JP2018053071A	2018-04-05
JP2014227545A	2014-12-08
JPS5933385A	1984-02-23
JPS57168988A	1982-10-18
JP2016204546A	2016-12-08
JPS63227693A	1988-09-21
JPS6121188A	1986-01-29
JP2004285130A	2004-10-14
JPS5281321A	1977-07-07
JPH09104872A	1997-04-22
JP2007327033A	2007-12-20

AOKI, Atsushi et al. (JP)

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