Process for the continuous production of super-absorbent polymers from PAN emulsions
摘要
Continuous preparation of superabsorbent polymers comprises hydrolysing aqueous emulsions of (non-)cross-linked polyacrylonitrile (PAN) homo- and/or copolymers at PAN concentrations of 10 - 45 wt.% in the reaction mixture with alkali hydroxide solutions at 50 - 100 degrees C in a continuously operating reactor suitable for high viscosity reactions. The highly viscous gel product is continuously precipitated with low boiling point monoalcohols to form a superabsorbent powder.
申请公布号
EP0783005(A2)
申请公布日期
1997.07.09
申请号
EP19960120751
申请日期
1996.12.23
申请人
BAYER AG
发明人
SACKMANN, GUENTER, DR.;SCHAPOWALOW, SERGEJ, DR.;ULLRICH, MARTIN, DIPL.-ING.;BROD, HELMUT, DR.