Processing

Please wait...

Settings

Settings

Goto Application

1. WO2004022608 - PROCESS FOR THE PRODUCTION OF SAP

Publication Number WO/2004/022608
Publication Date 18.03.2004
International Application No. PCT/EP2002/009895
International Filing Date 04.09.2002
Chapter 2 Demand Filed 05.04.2004
IPC
C08F 6/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
6Post-polymerisation treatments
CPC
B01J 2208/00672
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
2208Processes carried out in the presence of solid particles; Reactors therefor
00008Controlling the process
00654by measures relating to the particulate material
00672Particle size selection
B01J 2219/00033
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
2219Chemical, physical or physico-chemical processes in general; Their relevant apparatus
00002Chemical plants
00027Process aspects
00033Continuous processes
B01J 8/10
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
8Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
08with moving particles
10moved by stirrers or by rotary drums or rotary receptacles ; or endless belts
C08F 6/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
6Post-polymerisation treatments
C08F 6/001
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
6Post-polymerisation treatments
001Removal of residual monomers by physical means
C08F 6/008
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
6Post-polymerisation treatments
008Treatment of solid polymer wetted by water or organic solvents, e.g. coagulum, filter cakes
Applicants
  • LIST AG [CH]/[CH] (AllExceptUS)
  • POLYKEM SARL [CH]/[CH] (AllExceptUS)
  • BELKHIRIA, Sahbi [CH]/[TN] (UsOnly)
  • FLEURY, Pierre, Alain [CH]/[CH] (UsOnly)
  • AL-ALIM, Ibrahim, M. [SA]/[SA] (UsOnly)
Inventors
  • BELKHIRIA, Sahbi
  • FLEURY, Pierre, Alain
  • AL-ALIM, Ibrahim, M.
Agents
  • WEISS, Peter
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR THE PRODUCTION OF SAP
(FR) PROCEDE DE PRODUCTION DE POLYMERES SECS SUPERABSORBANTS
Abstract
(EN)
In a continuous process for the production of dried Superabsorbent polymers (SAPs) the polymerization reaction is carried out either in an initially homogenous aqueous monomer solution (bulk aqueous solution polymerization) or in a heterogeneous water-in-oil reactant mixture (reverse phase suspension or emulsion polymerization) within a continuous closed polymerization reactor (1), then the resulting polymer gel is dried within a continuous moved bed in a closed dryer (2), avoiding the needs of standard intermediate maturity tank(s).
(FR)
L'invention concerne un procédé de production en continu de polymères secs superabsorbants, consistant à mettre en oeuvre la réaction de polymérisation soit dans une solution monomère aqueuse initialement homogène (polymérisation en solution aqueuse en masse) soit dans un mélange réactif hétérogène eau dans l'huile (polymérisation en émulsion ou suspension en phase inverse) dans un réacteur de polymérisation fermé continu (1) puis à sécher le gel polymère ainsi obtenu à l'intérieur d'un lit mobile continu dans un séchoir fermé (2), toute cuve de maturation intermédiaire standard étant ainsi rendue inutile.
Also published as
IN151/MUMNP/2005
Latest bibliographic data on file with the International Bureau