| (19) |
 |
|
(11) |
EP 0 378 381 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
02.10.1991 Bulletin 1991/40 |
| (43) |
Date of publication A2: |
|
18.07.1990 Bulletin 1990/29 |
| (22) |
Date of filing: 10.01.1990 |
|
|
| (84) |
Designated Contracting States: |
|
BE DE FR GB IT NL |
| (30) |
Priority: |
11.01.1989 US 295696
|
| (71) |
Applicant: HOECHST CELANESE CORPORATION |
|
Somerville, N.J. 08876 (US) |
|
| (72) |
Inventors: |
|
- Ketterer, Martin E.
Charlotte
North Carolina (US)
- Glick, Morton M.
Summit
New Jersey (US)
|
| (74) |
Representative: De Minvielle-Devaux, Ian Benedict Peter et al |
|
CARPMAELS & RANSFORD
43, Bloomsbury Square
London WC1A 2RA
London WC1A 2RA (GB) |
|
| |
|
| (54) |
Metal-loaded carbon fibres |
(57) Disclosed is an improved metal loaded carbon fiber and a process for its production.
Incorporated within the fiber is a combination of a boron compound and a heavy metal
salt wherein the heavy metal is selected from the elements contained in Groups IVB,
VB and VIB of the Periodic Table. These composite metal loaded carbon fibers show
high thermal oxidation resistance and low degradation when compared to prior art carbon
fibers. They have great utility in the aircraft and space technology because of their
high oxidation resistance and their ability to retain structure at high temperature
over extended periods of time.