JPS644693A - Production of mesophase pitch - Google Patents

Production of mesophase pitch

Info

Publication number
JPS644693A
JPS644693A JP15911287A JP15911287A JPS644693A JP S644693 A JPS644693 A JP S644693A JP 15911287 A JP15911287 A JP 15911287A JP 15911287 A JP15911287 A JP 15911287A JP S644693 A JPS644693 A JP S644693A
Authority
JP
Japan
Prior art keywords
pitch
mesophase
insoluble content
prepared
optically anisotropic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15911287A
Other languages
Japanese (ja)
Other versions
JPH0629434B2 (en
Inventor
Taichi Ogawa
Fumihiro Miyoshi
Hidetaka Sugibe
Mamoru Kamishita
Takeshi Nagasawa
Hiroaki Shono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Nitto Boseki Co Ltd
Original Assignee
Nitto Boseki Co Ltd
Kawasaki Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nitto Boseki Co Ltd, Kawasaki Steel Corp filed Critical Nitto Boseki Co Ltd
Priority to JP62159112A priority Critical patent/JPH0629434B2/en
Publication of JPS644693A publication Critical patent/JPS644693A/en
Publication of JPH0629434B2 publication Critical patent/JPH0629434B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Working-Up Tar And Pitch (AREA)
  • Inorganic Fibers (AREA)

Abstract

PURPOSE:To simply and effectively prepare mesophase pitch having an optically anisotropic fibrous structure, by using particular hydrogenated coal tar pitch as a starting material, conducting adjustment of components to prepare pitch effective for formation of mesophase, and heat treating the pitch under particular conditions. CONSTITUTION:Mesophase pitch having an optically anisotropic phase content of at least 90% and a quinoline insoluble content of 30wt.% or less is prepared by the following method. Pitch having a benzene insoluble content of a least 40wt.% and a quinoline insoluble content of 1wt.% or less is prepared from hydrogenated coal tar pitch having a degree of hydrogenation of at least 0.3. Then, an inert gas is blown into the treated pitch and heat treated at 510 deg.C or below under atmospheric pressure or reduced pressure for a short period of time.
JP62159112A 1987-06-26 1987-06-26 Method for producing mesophase pitch Expired - Lifetime JPH0629434B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62159112A JPH0629434B2 (en) 1987-06-26 1987-06-26 Method for producing mesophase pitch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62159112A JPH0629434B2 (en) 1987-06-26 1987-06-26 Method for producing mesophase pitch

Publications (2)

Publication Number Publication Date
JPS644693A true JPS644693A (en) 1989-01-09
JPH0629434B2 JPH0629434B2 (en) 1994-04-20

Family

ID=15686505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62159112A Expired - Lifetime JPH0629434B2 (en) 1987-06-26 1987-06-26 Method for producing mesophase pitch

Country Status (1)

Country Link
JP (1) JPH0629434B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392328A (en) * 2011-08-29 2012-03-28 云南昆钢煤焦化有限公司 Method for intensively producing carbon fiber raw material by coal pitch needle coke

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54160427A (en) * 1977-07-08 1979-12-19 Exxon Research Engineering Co Production of optically anisotropic* deformable pitch* optical anisotropic pitch* and pitch fiber
JPS6030365A (en) * 1983-07-28 1985-02-15 Canon Inc Recorder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54160427A (en) * 1977-07-08 1979-12-19 Exxon Research Engineering Co Production of optically anisotropic* deformable pitch* optical anisotropic pitch* and pitch fiber
JPS6030365A (en) * 1983-07-28 1985-02-15 Canon Inc Recorder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392328A (en) * 2011-08-29 2012-03-28 云南昆钢煤焦化有限公司 Method for intensively producing carbon fiber raw material by coal pitch needle coke

Also Published As

Publication number Publication date
JPH0629434B2 (en) 1994-04-20

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