| (19) |
 |
|
(11) |
EP 0 123 540 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
02.01.1985 Bulletin 1985/01 |
| (43) |
Date of publication A2: |
|
31.10.1984 Bulletin 1984/44 |
| (22) |
Date of filing: 19.04.1984 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE FR GB IT LI NL SE |
| (30) |
Priority: |
20.04.1983 US 486633
|
| (71) |
Applicant: RAYCHEM CORPORATION (a California corporation) |
|
() |
|
|
| |
|
| (54) |
Conductive polymers and devices containing them |
(57) The properties of conductive polymer compositions, especially PTC compositions, are
improved by incorporating therein a thermally conductive filler, preferably a filler
of high aspect ratio, eg. crystalline graphite. Self-limiting heaters having greatly
increased power can be produced through use of these compositions.