| (19) |
 |
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(11) |
EP 1 990 353 A8 |
| (12) |
CORRECTED EUROPEAN PATENT APPLICATION |
|
Note: Bibliography reflects the latest situation |
| (15) |
Correction information: |
|
Corrected version no 1 (W1 A1) |
| (48) |
Corrigendum issued on: |
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25.02.2009 Bulletin 2009/09 |
| (43) |
Date of publication: |
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12.11.2008 Bulletin 2008/46 |
| (22) |
Date of filing: 08.05.2007 |
|
| (51) |
International Patent Classification (IPC):
|
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| (84) |
Designated Contracting States: |
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AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO
SE SI SK TR |
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Designated Extension States: |
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AL BA HR MK RS |
| (71) |
Applicant: Borealis Technology Oy |
|
06101 Porvoo (FI) |
|
| (72) |
Inventors: |
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- Stadlbauer, Manfred
4040 Linz (AT)
- Ernst, Eberhard
4210 Unterweitersdorf (AT)
- Huhtanen, Lauri
07940 Loviisa (FI)
- Daniels, Yvo
3520 Zonhoven (BE)
- Jacobs, Franck
9940 Evergem (BE)
|
| (74) |
Representative: Lux, Berthold |
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Maiwald Patentanwalts GmbH
Elisenhof
Elisenstraße 3
D-80335 München
D-80335 München (DE) |
|
| |
|
| (54) |
Electrical insulation film |
(57) The present invention relates to a capacitor film comprising a biaxially oriented
polypropylene wherein
a) said polypropylene has a draw ratio in machine direction of at least 4.0 and a
draw ratio in transverse direction of at least 4.0, and
b) said polypropylene has an electrical breakdown strength EB63% according to IEC
60243-part 1 (1988) of at least 300 kV/mm at a draw ratio in machine direction and
in transverse direction of 4.0.