| (19) |
 |
|
(11) |
EP 1 584 736 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
11.01.2006 Bulletin 2006/02 |
| (43) |
Date of publication A2: |
|
12.10.2005 Bulletin 2005/41 |
| (22) |
Date of filing: 24.03.2005 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI
SK TR |
|
Designated Extension States: |
|
AL BA HR LV MK YU |
| (30) |
Priority: |
24.03.2004 JP 2004086933
|
| (71) |
Applicants: |
|
- National Institute of Advanced Industrial Science
and Technology
Tokyo 100-8921 (JP)
- Nisshinbo Industries, Inc.
Chuo-ku,
Tokyo 103-8650 (JP)
|
|
| (72) |
Inventors: |
|
- Ouchi, Akihiko,
Tsukuba Center
Tsukuba-shi
Ibaraki-ken 305-8565 (JP)
- Itou, Jun,
c/o Miai Plant
Okazaki-shi
Aichi-ken (JP)
- Sobajima, Mitsuo,
c/o Miai Plant
Okazaki-shi
Aichi-ken (JP)
|
| (74) |
Representative: Stuart, Ian Alexander |
|
Mewburn Ellis LLP
York House
23 Kingsway
London WC2B 6HP
London WC2B 6HP (GB) |
|
| |
|
| (54) |
Method for bleaching fibrous articles |
(57) In a method for bleaching fibrous articles by impregnating the fibrous articles with
oxidizing or reducing agent solutions and irradiating the impregnated fibrous articles
with ultraviolet or visible light, the oxidizing or reducing agent solutions are re-added
one or more times to the fibrous articles while they are being irradiated with ultraviolet
or visible light.