EP0378187A3 - Pitch for carbon fibers, process for production of said pitch, and process for production of carbon fibers using said pitch - Google Patents

Pitch for carbon fibers, process for production of said pitch, and process for production of carbon fibers using said pitch Download PDF

Info

Publication number
EP0378187A3
EP0378187A3 EP19900100420 EP90100420A EP0378187A3 EP 0378187 A3 EP0378187 A3 EP 0378187A3 EP 19900100420 EP19900100420 EP 19900100420 EP 90100420 A EP90100420 A EP 90100420A EP 0378187 A3 EP0378187 A3 EP 0378187A3
Authority
EP
European Patent Office
Prior art keywords
pitch
carbon fibers
production
average molecular
molecular weight
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.)
Ceased
Application number
EP19900100420
Other languages
German (de)
French (fr)
Other versions
EP0378187A2 (en
Inventor
Masakatsu Ohta
Teiken Sawada
Tsuneaki Uchida
Ryutaro Fukushima
Yoshikazu Nagasaki
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.)
Idemitsu Kosan Co Ltd
Original Assignee
Idemitsu Kosan Co Ltd
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
Priority claimed from JP1004882A external-priority patent/JP2520099B2/en
Priority claimed from JP1145117A external-priority patent/JP2678384B2/en
Application filed by Idemitsu Kosan Co Ltd filed Critical Idemitsu Kosan Co Ltd
Publication of EP0378187A2 publication Critical patent/EP0378187A2/en
Publication of EP0378187A3 publication Critical patent/EP0378187A3/en
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/145—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues
    • D01F9/155—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues from petroleum pitch
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C3/00—Working-up pitch, asphalt, bitumen
    • C10C3/002—Working-up pitch, asphalt, bitumen by thermal means

Abstract

The present invention relates to a process for producing pitch for use in production of carbon fiber which comprises subjecting a pitch starting material to a first stage heat treatment at a temperature of 380 to 500°C under a pressure of 1 to 1,500 mmHg and then to a second stage heat treatment at a temperature of 450 to 550°C under a pressure of 0.1 to 20 mmHg, wherein the pitch starting material has a number average molecular weight of 300 to 500, weight average molecular weight/number average molecular weight of 1.5/1 to 2.2/1, a boiling point of at least 450°C, a residue content as determined by heating up to 800°C in nitrogen gas at a rate of 10°C per minute of not more than 5% by weight, and a peak area at the starting point as determined by developing on a silica gel thin layer with a mixed solvent of 95% by volume of dichloromethane and 5% by volume of methyl alcohol of not more than 1%.
The present invention further relates to novel pitch for use in production of carbon fibers as obtained by the above process and a process for producing carbon fibers using said pitch. According to the present invention, the pitch capable of providing carbon fibers having a high tensile strength and a high knot strength can be obtained.
EP19900100420 1989-01-13 1990-01-10 Pitch for carbon fibers, process for production of said pitch, and process for production of carbon fibers using said pitch Ceased EP0378187A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP4882/89 1989-01-13
JP1004882A JP2520099B2 (en) 1989-01-13 1989-01-13 Carbon fiber pitch manufacturing method
JP1145117A JP2678384B2 (en) 1989-06-09 1989-06-09 Pitch for carbon fiber and method of manufacturing carbon fiber using the same
JP145117/89 1989-06-09

Publications (2)

Publication Number Publication Date
EP0378187A2 EP0378187A2 (en) 1990-07-18
EP0378187A3 true EP0378187A3 (en) 1990-10-31

Family

ID=26338737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900100420 Ceased EP0378187A3 (en) 1989-01-13 1990-01-10 Pitch for carbon fibers, process for production of said pitch, and process for production of carbon fibers using said pitch

Country Status (1)

Country Link
EP (1) EP0378187A3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0314624A (en) * 1989-06-09 1991-01-23 Idemitsu Kosan Co Ltd Production of carbon yarn
JPH0517782A (en) * 1991-07-09 1993-01-26 Tonen Corp Liquid crystal pitch for producing carbon yarn having high compression strength and production of carbon yarn having high compression strength
US10837127B2 (en) 2012-04-18 2020-11-17 Mitsubishi Chemical Corporation Carbon fiber bundle and method of producing carbon fiber bundle
CN114164013B (en) * 2021-12-20 2023-01-03 祥峰科技有限公司 Modified asphalt preparation system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0148560A2 (en) * 1983-10-14 1985-07-17 Nippon Oil Co. Ltd. Process for producing pitch-based graphite fibres
GB2156378A (en) * 1984-03-26 1985-10-09 Idemitsu Kosan Co Pitch materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0148560A2 (en) * 1983-10-14 1985-07-17 Nippon Oil Co. Ltd. Process for producing pitch-based graphite fibres
GB2156378A (en) * 1984-03-26 1985-10-09 Idemitsu Kosan Co Pitch materials

Also Published As

Publication number Publication date
EP0378187A2 (en) 1990-07-18

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