| (19) |
 |
|
(11) |
EP 0 223 908 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
12.07.1989 Bulletin 1989/28 |
| (43) |
Date of publication A2: |
|
03.06.1987 Bulletin 1987/23 |
| (22) |
Date of filing: 04.06.1986 |
|
| (51) |
International Patent Classification (IPC)4: D04H 1/64 |
|
| (84) |
Designated Contracting States: |
|
DE FR GB IT |
| (30) |
Priority: |
18.11.1985 JP 256594/85
|
| (71) |
Applicant: Nakazawa, Tomio |
|
Tokyo (JP) |
|
| (72) |
Inventor: |
|
- Nakazawa, Tomio
Tokyo (JP)
|
| (74) |
Representative: Boeters, Hans Dietrich, Dr. et al |
|
Patentanwälte Boeters & Bauer,
Bereiteranger 15
81541 München
81541 München (DE) |
|
| |
|
| (54) |
Process for continuous production of nonwoven highly water-absorbent complex |
(57) The invention relates to a process for the continuous production of nonwoven highly
water-absorbent complex characterized in adding in advance to an aqueous monomer solution
a crosslinking agent and a oxidizing polymerization initiating agent having a latent
activity, and after impregnating a continuous nonwoven fibrous web with this solution,
causing a rapid polymerization reaction by adding an activator to this web so as to
form a water-swelling polymer in this web, thereby continuously forming a nonwoven
highly water-absorbent comple. As the radical polymerization initiator a peroxide
e.g. hydrogen peroxide is used, and as the activator a water soluble reducing agent
capable of forming a redox system with said peroxide, e.g. aniline or sodium sulfite
is used.