JPS57139179A - Preparation of hard pitch - Google Patents

Preparation of hard pitch

Info

Publication number
JPS57139179A
JPS57139179A JP2466481A JP2466481A JPS57139179A JP S57139179 A JPS57139179 A JP S57139179A JP 2466481 A JP2466481 A JP 2466481A JP 2466481 A JP2466481 A JP 2466481A JP S57139179 A JPS57139179 A JP S57139179A
Authority
JP
Japan
Prior art keywords
pitch
solvent
meso phase
insol
soft
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
JP2466481A
Other languages
Japanese (ja)
Other versions
JPS6121589B2 (en
Inventor
Kozo Yumitate
Noriyoshi Fukuda
Takeshi Nagasawa
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
Kawatetsu Kagaku KK
Original Assignee
Kawasaki Steel Corp
Kawatetsu Kagaku KK
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 Kawasaki Steel Corp, Kawatetsu Kagaku KK filed Critical Kawasaki Steel Corp
Priority to JP2466481A priority Critical patent/JPS57139179A/en
Publication of JPS57139179A publication Critical patent/JPS57139179A/en
Publication of JPS6121589B2 publication Critical patent/JPS6121589B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To easily obtain a hard pitch suitable for impregnation, etc. by heating a soft or medium coal tar pitch to produce a meso phase and after removal of the meso phase, by solvent fractionation distilling off a low-molecular component in the pitch.
CONSTITUTION: A soft or medium coal tar pitch is heated to 350W500°C to produce a meso phase and after addition of a solvent such as tar oil, the solvent- insol. component contg. the meso phase is separated and removed by means of filtration, etc. Then the solvent is removed by subjecting the filtrate to vacuum distillation and a low-molecular component in the obtd. pitch is distilled off under vacuum by heating the pitch to about 350W500°C. Thus a hard pitch of softening temp. ≥200°C and quinoline-insol. content ≤2% is easily obtd. by a simple method.
COPYRIGHT: (C)1982,JPO&Japio
JP2466481A 1981-02-21 1981-02-21 Preparation of hard pitch Granted JPS57139179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2466481A JPS57139179A (en) 1981-02-21 1981-02-21 Preparation of hard pitch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2466481A JPS57139179A (en) 1981-02-21 1981-02-21 Preparation of hard pitch

Publications (2)

Publication Number Publication Date
JPS57139179A true JPS57139179A (en) 1982-08-27
JPS6121589B2 JPS6121589B2 (en) 1986-05-28

Family

ID=12144406

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2466481A Granted JPS57139179A (en) 1981-02-21 1981-02-21 Preparation of hard pitch

Country Status (1)

Country Link
JP (1) JPS57139179A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941387A (en) * 1982-08-30 1984-03-07 Osaka Gas Co Ltd Manufacture of quinoline-insoluble free-pitch
JPS5982417A (en) * 1982-11-04 1984-05-12 Mitsubishi Oil Co Ltd Pitch for raw material of carbon fiber and its preparation
JPS6136392A (en) * 1984-07-06 1986-02-21 アライド・コーポレーシヨン Low solid coal tar impregnating pitch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0432141Y2 (en) * 1985-02-20 1992-07-31

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5281321A (en) * 1975-12-09 1977-07-07 Koa Oil Co Ltd Method of manufacturing binder pitch from petroleum heavy hydrocarbons
JPS5410326A (en) * 1977-06-24 1979-01-25 Nittetsu Kagaku Kogyo Kk Method of making binder pitch for carbon material
JPS54160427A (en) * 1977-07-08 1979-12-19 Exxon Research Engineering Co Production of optically anisotropic* deformable pitch* optical anisotropic pitch* and pitch fiber

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5281321A (en) * 1975-12-09 1977-07-07 Koa Oil Co Ltd Method of manufacturing binder pitch from petroleum heavy hydrocarbons
JPS5410326A (en) * 1977-06-24 1979-01-25 Nittetsu Kagaku Kogyo Kk Method of making binder pitch for carbon material
JPS54160427A (en) * 1977-07-08 1979-12-19 Exxon Research Engineering Co Production of optically anisotropic* deformable pitch* optical anisotropic pitch* and pitch fiber

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941387A (en) * 1982-08-30 1984-03-07 Osaka Gas Co Ltd Manufacture of quinoline-insoluble free-pitch
JPH0150354B2 (en) * 1982-08-30 1989-10-30 Osaka Gas Co Ltd
JPS5982417A (en) * 1982-11-04 1984-05-12 Mitsubishi Oil Co Ltd Pitch for raw material of carbon fiber and its preparation
JPS6257678B2 (en) * 1982-11-04 1987-12-02 Mitsubishi Oil Co
JPS6136392A (en) * 1984-07-06 1986-02-21 アライド・コーポレーシヨン Low solid coal tar impregnating pitch

Also Published As

Publication number Publication date
JPS6121589B2 (en) 1986-05-28

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