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1. WO2004078327 - METHOD OF PRODUCING MEMBRANES FOR FILTRATION MODULES WHICH ARE INTENDED, FOR EXAMPLE, FOR WATER TREATMENT

Publication Number WO/2004/078327
Publication Date 16.09.2004
International Application No. PCT/FR2004/000174
International Filing Date 26.01.2004
IPC
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
61
Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
14
Ultrafiltration; Microfiltration
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
67
Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
69
Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
02
characterised by their properties
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
71
Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06
Organic material
44
Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B01D71/26-B01D71/42177
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
71
Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06
Organic material
66
Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
68
Polysulfones; Polyethersulfones
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
71
Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06
Organic material
76
Macromolecular material not specifically provided for in a single one of groups B01D71/08-B01D71/74132
82
characterised by the presence of specified groups, e.g. introduced by chemical after-treatment
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
B01D 61/14 (2006.01)
B01D 67/00 (2006.01)
B01D 69/02 (2006.01)
B01D 71/44 (2006.01)
B01D 71/68 (2006.01)
B01D 71/82 (2006.01)
CPC
B01D 2323/08
B01D 2323/30
B01D 2325/36
B01D 2325/38
B01D 67/0006
B01D 69/02
Applicants
  • AQUASOURCE [FR/FR]; 20, avenue Didier Daurat F-31029 Toulouse Cedex 04, FR (AllExceptUS)
  • ABIDINE, Nouhad [FR/FR]; FR (UsOnly)
Inventors
  • ABIDINE, Nouhad; FR
Agents
  • PEAUCELLE, Chantal ; 3, avenue Bugeaud F-75116 Paris, FR
Priority Data
03/0101329.01.2003FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD OF PRODUCING MEMBRANES FOR FILTRATION MODULES WHICH ARE INTENDED, FOR EXAMPLE, FOR WATER TREATMENT
(FR) PROCEDE DE FABRICATION DE MEMBRANES POUR MODULES DE FILTRATION, NOTAMMENT POUR LE TRAITEMENT DES EAUX
Abstract
(EN)
The invention relates to a method of producing membranes for nanofiltration, ultrafiltration or microfiltration modules which are intended, for example, for water treatment, said membranes comprising a hydrophobic polymer material having a hydrophilic polymer material incorporated therein or deposited thereon. The invention is characterised in that it comprises the following steps consisting in: (a) cold conditioning the membrane, following the incorporation or deposition of the hydrophilic polymer material, in a solution containing ammonium, sodium or potassium persulphate; and (b) hot crosslinking the hydrophobic and hydrophilic polymer materials forming the membrane, at a temperature greater than 60 °C, by soaking said membrane in a crosslinking agent employing a radical mechanism.
(FR)
Procédé de fabrication de membranes pour modules de nanofiltration, ultrafiltration ou microfiltration notamment pour le traitement des eaux, comportant un matériau polymère hydrophobe auquel on incorpore, ou sur lequel on dépose, un matériau polymère hydrophile, caractérisé en ce qu’il comporte les étapes suivantes : a) on conditionne, à froid, la membrane, après incorporation ou dépôt du matériau polymère hydrophile, dans une solution contenant du persulfate de potassium, de sodium ou d’ammonium et b) on effectue une réticulation à chaud, à une température supérieure à 60°C, des matériaux polymères hydrophiles et hydrophobes constituant la membrane, en trempant cette dernière dans un agent de réticulation agissant par mécanisme radicalaire.
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