| (19) |
 |
|
(11) |
EP 0 104 639 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
26.03.1986 Bulletin 1986/13 |
| (43) |
Date of publication A2: |
|
04.04.1984 Bulletin 1984/14 |
| (22) |
Date of filing: 26.09.1983 |
|
|
| (84) |
Designated Contracting States: |
|
DE FR GB IT NL |
| (30) |
Priority: |
27.09.1982 US 423121
|
| (71) |
Applicant: UNION CARBIDE CORPORATION |
|
() |
|
|
| |
|
| (54) |
Process for improving carbon fibers |
(57) A process for producing a carbon fiber having very high Young's modulus includes
a post heat treatment for a carbon fiber wound onto a bobbin.