Process for producing pitch for carbon materials

Details Process for producing pitch for carbon materials Process for producing pitch for carbon materials

1990-01-04

1991-01-22

Myers, Helane E.

Mineral oils: processes and products

Asphalts, tars, pitches and resins; making, treating and...

208 22, 208 44, 585422, 585425, C01C 300

Patent

active

049868934

ABSTRACT:
Disclosed herein is a process for producing a substantially quinoline-soluble and optically anisotropic pitch for carbon materials, which process comprises the steps of (1) polymerizing naphthalene by heating at a temperature of not higher than 330.degree. C. for 0.5 to 100 hours in the presence of Lewis acid catalyst, (2) removing said catalyst from the reaction mixture, (3) subjecting said reaction mixture to thermal treatment at a temperature of 390.degree. to 450.degree. C. for 1 to 5 hours under a pressure of not less than an atmospheric pressure so as to produce neither a quinoline-insoluble pitch nor optically anisotropic pitch, thereby carrying out aromatization of the polymerizate of naphthalene, and (4) heating the thus treated material at a temperature of 350.degree. to 380.degree. C. for 3 to 10 hours under a reduced pressure while flowing an inert gas, thereby removing the volatile components for said material, and the pitch produced by the process.

REFERENCES:
patent: 3629379 (1971-12-01), Otani
patent: 3649234 (1972-03-01), Charpentier
patent: 3702054 (1972-11-01), Araki et al.
patent: 3718493 (1973-02-01), Joo
patent: 3812240 (1974-05-01), Whitaker
patent: 3865566 (1975-02-01), Keist
patent: 3919376 (1975-11-01), Schulz
patent: 3974264 (1976-08-01), McHenry
patent: 3997654 (1976-12-01), Kolling et al.
patent: 4016247 (1977-04-01), Otani
patent: 4026788 (1977-05-01), McHenry
patent: 4032430 (1977-06-01), Lewis
patent: 4042486 (1977-08-01), Asano et al.
patent: 4058386 (1977-11-01), Faulkner
patent: 4115527 (1978-09-01), Otani
patent: 4208267 (1980-06-01), Diefendorf et al.
patent: 4209500 (1980-06-01), Chwastiak
patent: 4243512 (1981-01-01), Seo
patent: 4246017 (1981-01-01), Phillips
patent: 4293533 (1981-10-01), Asano
patent: 4359444 (1982-10-01), Shah
patent: 4402928 (1983-09-01), Lewis et al.
patent: 4431513 (1984-02-01), Lewis
patent: 4454020 (1984-06-01), Izumi et al.
patent: 4457828 (1984-07-01), Lewis
patent: 4496637 (1985-01-01), Shimada
patent: 4521294 (1985-06-01), Uemera
patent: 4529498 (1985-07-01), Watanabe
patent: 4534850 (1985-08-01), Izumi et al.
patent: 4589974 (1986-05-01), Izumi et al.
patent: 4601813 (1986-07-01), Izumi
patent: 4655902 (1987-04-01), Izumi et al.
patent: 4746470 (1988-05-01), Fujima et al.
patent: 4789455 (1988-12-01), Machida et al.
patent: 4891126 (1990-01-01), Mochida et al.

Affiliated with

Also associated with

Rating

Process for producing pitch for carbon materials does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing pitch for carbon materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing pitch for carbon materials will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1553768