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 PDFInfo
- 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
Links
- 229920000049 Carbon (fiber) Polymers 0.000 title abstract 6
- 239000004917 carbon fiber Substances 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 title abstract 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 abstract 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 3
- 239000007858 starting material Substances 0.000 abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 1
- 239000012046 mixed solvent Substances 0.000 abstract 1
- 239000000741 silica gel Substances 0.000 abstract 1
- 229910002027 silica gel Inorganic materials 0.000 abstract 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Fibers (AREA)
- Working-Up Tar And Pitch (AREA)
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.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1004882A JP2520099B2 (en) | 1989-01-13 | 1989-01-13 | Carbon fiber pitch manufacturing method |
| JP4882/89 | 1989-01-13 | ||
| JP145117/89 | 1989-06-09 | ||
| JP1145117A JP2678384B2 (en) | 1989-06-09 | 1989-06-09 | Pitch for carbon fiber and method of manufacturing carbon fiber using the same |
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0314624A (en) * | 1989-06-09 | 1991-01-23 | Idemitsu Kosan Co Ltd | Carbon fiber manufacturing method |
| 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 |
| CN109505038A (en) | 2012-04-18 | 2019-03-22 | 三菱化学株式会社 | The manufacturing method of carbon fiber bundle and 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)
| 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 |
-
1990
- 1990-01-10 EP EP19900100420 patent/EP0378187A3/en not_active Ceased
Patent Citations (2)
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
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|
| PUAL | Search report despatched |
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| AK | Designated contracting states |
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| 17P | Request for examination filed |
Effective date: 19901215 |
|
| 17Q | First examination report despatched |
Effective date: 19911217 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
| 18R | Application refused |
Effective date: 19930726 |