JPS5695983A - Production of blown pitch - Google Patents

Production of blown pitch

Info

Publication number
JPS5695983A
JPS5695983A JP17194379A JP17194379A JPS5695983A JP S5695983 A JPS5695983 A JP S5695983A JP 17194379 A JP17194379 A JP 17194379A JP 17194379 A JP17194379 A JP 17194379A JP S5695983 A JPS5695983 A JP S5695983A
Authority
JP
Japan
Prior art keywords
pitch
petroleum
blow
air
oil
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
JP17194379A
Other languages
Japanese (ja)
Other versions
JPS6356279B2 (en
Inventor
Katsuo Inagaki
Masatomo Shigeta
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.)
YURIKA KOGYO KK
Kureha Corp
Original Assignee
YURIKA KOGYO KK
Kureha 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 YURIKA KOGYO KK, Kureha Corp filed Critical YURIKA KOGYO KK
Priority to JP17194379A priority Critical patent/JPS5695983A/en
Publication of JPS5695983A publication Critical patent/JPS5695983A/en
Publication of JPS6356279B2 publication Critical patent/JPS6356279B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Working-Up Tar And Pitch (AREA)

Abstract

PURPOSE: To economically obtain a highly viscoelastic blown pitch in a short time, by air-oxidizing, at a specified temperature, a petroleum pitch obtained by thermally cracking a petroleum-derived heavy oil under a blow of superheated steam.
CONSTITUTION: A blow pitch having excellent viscoelasticity in a low-temperature region is produced within 2W6hr, which is shorter than in prior art processes, by air-oxidizing at 180W300°C a residue (petroleum pitch) prepared by thermally cracking a petroleum-derived heavy oil such as a vacuum distillation residue under a blow of 0.1W0.5pt.wt. superheated steam per pt.wt. residue, and distilling off about 20W50wt%, based on stock oil, cracked oil. If the air-oxidation is performed after a portion of the cracked oil has been added to the petroleum pitch, further improvement in properties and shortening of a hardening time can be achieved.
COPYRIGHT: (C)1981,JPO&Japio
JP17194379A 1979-12-28 1979-12-28 Production of blown pitch Granted JPS5695983A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17194379A JPS5695983A (en) 1979-12-28 1979-12-28 Production of blown pitch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17194379A JPS5695983A (en) 1979-12-28 1979-12-28 Production of blown pitch

Publications (2)

Publication Number Publication Date
JPS5695983A true JPS5695983A (en) 1981-08-03
JPS6356279B2 JPS6356279B2 (en) 1988-11-07

Family

ID=15932677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17194379A Granted JPS5695983A (en) 1979-12-28 1979-12-28 Production of blown pitch

Country Status (1)

Country Link
JP (1) JPS5695983A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58138782A (en) * 1982-02-15 1983-08-17 Nippon Oil Co Ltd Pitch for carbon fiber
JPS58225188A (en) * 1982-06-22 1983-12-27 Nippon Sekiyu Seisei Kk Treatment of asphalt

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5352507A (en) * 1976-10-25 1978-05-13 Mitsui Kozan Cokes Kogyo Kk Treatment of heavy oil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5352507A (en) * 1976-10-25 1978-05-13 Mitsui Kozan Cokes Kogyo Kk Treatment of heavy oil

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58138782A (en) * 1982-02-15 1983-08-17 Nippon Oil Co Ltd Pitch for carbon fiber
JPH054435B2 (en) * 1982-02-15 1993-01-20 Nippon Oil Co Ltd
JPS58225188A (en) * 1982-06-22 1983-12-27 Nippon Sekiyu Seisei Kk Treatment of asphalt
JPH039157B2 (en) * 1982-06-22 1991-02-07 Nippon Sekyu Seisei Kk

Also Published As

Publication number Publication date
JPS6356279B2 (en) 1988-11-07

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