EP 2547703 A1 20130123 - A PROCESS FOR PRODUCING WATER-ABSORBENT POLYMER PARTICLES BY POLYMERIZING DROPLETS OF A MONOMER SOLUTION
Title (en)
A PROCESS FOR PRODUCING WATER-ABSORBENT POLYMER PARTICLES BY POLYMERIZING DROPLETS OF A MONOMER SOLUTION
Title (de)
VERFAHREN ZUR HERSTELLUNG VON WASSERABSORBIERENDEN POLYMERPARTIKELN MITTELS POLYMERISATION VON TROPFEN EINER MONOMERLÖSUNG
Title (fr)
PROCÉDÉ DE PRODUCTION DE PARTICULES POLYMÈRES ABSORBANT L'EAU PAR POLYMÉRISATION DE GOUTTELETTES D'UNE SOLUTION DE MONOMÈRE
Publication
Application
Priority
- EP 10157563 A 20100324
- EP 10156483 A 20100315
- EP 2011053498 W 20110309
- EP 11706846 A 20110309
Abstract (en)
[origin: WO2011113728A1] The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution in a surrounding heated gas phase and flowing the gas cocurrent through the polymerization chamber, which comprises coating the water-absorbing polymer particles with at least one sulfinic acid, sulfonic acid and/or salts thereof.
IPC 8 full level
C08F 2/34 (2006.01); A61L 15/60 (2006.01); C08F 2/10 (2006.01); C08F 2/16 (2006.01)
CPC (source: EP)
A61L 15/60 (2013.01); C08F 2/10 (2013.01); C08F 2/16 (2013.01); C08F 2/34 (2013.01); A61F 2013/530569 (2013.01); A61F 2013/530591 (2013.01); A61L 2420/02 (2013.01)
Citation (search report)
See references of WO 2011113728A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2011113728 A1 20110922; BR 112012023050 A2 20160517; CN 102803302 A 20121128; EP 2547703 A1 20130123; JP 2013522403 A 20130613; RU 2012143697 A 20140420
DOCDB simple family (application)
EP 2011053498 W 20110309; BR 112012023050 A 20110309; CN 201180014390 A 20110309; EP 11706846 A 20110309; JP 2012557484 A 20110309; RU 2012143697 A 20110309