EP 0342542 B1 19930804 - USE OF CARBON MATERIALS
Title (en)
USE OF CARBON MATERIALS
Publication
Application
Priority
JP 11748788 A 19880514
Abstract (en)
[origin: EP0342542A2] A process for producing a reformed pitch useful for various carbon materials is provided. This process comprises mixing a pitch having a ratio of aromatic hydrocarbon fa of 0.6 or more with a Lewis acid and a co-solvent so as to give a mol ratio of the said Lewis acid to the said pitch in the range of 0.3 SIMILAR 5.0 and a mol ratio of the said co-solvent to the said pitch in the range of ratio of 2.5 SIMILAR 50, reacting the mixture at a temperature of 100 SIMILAR 300 DEG C and removing the Lewis acid and the co-solvent from the reaction product. Meso-Carbon microbeads having a uniform diameter of 20 mu m or less can be produced at a high yield of 60% or more by heat treating the reformed pitch at 200 SIMILAR 380 DEG C to produce the optically anisotropic small spheres and separating them from an optically isotropic matrix.
IPC 1-7
IPC 8 full level
C10B 55/00 (2006.01); C10C 3/00 (2006.01); C10C 3/02 (2006.01); C10C 3/10 (2006.01); C10C 3/14 (2006.01); D01F 9/145 (2006.01)
CPC (source: EP)
C10C 3/002 (2013.01); C10C 3/14 (2013.01); D01F 9/145 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0342542 A2 19891123; EP 0342542 A3 19900214; EP 0342542 B1 19930804; DE 68908004 D1 19930909; DE 68908004 T2 19940105; DE 68917318 D1 19940908; DE 68917318 T2 19950209; EP 0456278 A1 19911113; EP 0456278 B1 19940803; JP 2630466 B2 19970716; JP H0249095 A 19900219
DOCDB simple family (application)
EP 89108592 A 19890512; DE 68908004 T 19890512; DE 68917318 T 19890512; EP 91111551 A 19890512; JP 11746889 A 19890512