EP 0223908 B1 19930224 - PROCESS FOR CONTINUOUS PRODUCTION OF NONWOVEN HIGHLY WATER-ABSORBENT COMPLEX
Title (en)
PROCESS FOR CONTINUOUS PRODUCTION OF NONWOVEN HIGHLY WATER-ABSORBENT COMPLEX
Publication
Application
Priority
JP 25659485 A 19851118
Abstract (en)
[origin: EP0223908A2] 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.
IPC 1-7
IPC 8 full level
D04H 1/64 (2006.01)
CPC (source: EP)
D04H 1/587 (2013.01); D04H 1/64 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0223908 A2 19870603; EP 0223908 A3 19890712; EP 0223908 B1 19930224; DE 3687823 D1 19930401; DE 3687823 T2 19930930; ES 2001289 A6 19880501
DOCDB simple family (application)
EP 86107597 A 19860604; DE 3687823 T 19860604; ES 8601600 A 19860903