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1. WO1990003210 - POROUS MEMBRANE AND PROCESS FOR ITS MANUFACTURE

Publication Number WO/1990/003210
Publication Date 05.04.1990
International Application No. PCT/JP1989/000996
International Filing Date 29.09.1989
IPC
B01D 71/66 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
66Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
CPC
B01D 71/26
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
26Polyalkenes
B01D 71/66
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
66Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
B01D 71/68
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
66Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
68Polysulfones; Polyethersulfones
B01D 71/76
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
76Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
Applicants
  • TORAY INDUSTRIES, INC. [JP]/[JP] (AllExceptUS)
  • HIMESHIMA, Yoshio [JP]/[JP] (UsOnly)
  • TANISUGI, Hideaki [JP]/[JP] (UsOnly)
  • WATANABE, Tetsuo [JP]/[JP] (UsOnly)
  • UEMURA, Tadahiro [JP]/[JP] (UsOnly)
  • KURIHARA, Masaru [JP]/[JP] (UsOnly)
Inventors
  • HIMESHIMA, Yoshio
  • TANISUGI, Hideaki
  • WATANABE, Tetsuo
  • UEMURA, Tadahiro
  • KURIHARA, Masaru
Agents
  • TANIGAWA, Hidejiro
Priority Data
63/24526029.09.1988JP
63/25983014.10.1988JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) POROUS MEMBRANE AND PROCESS FOR ITS MANUFACTURE
(FR) MEMBRANE POREUSE ET PROCEDE DE PRODUCTION
Abstract
(EN)
The invention relates to a porous membrane having excellent durability and being useful as an ultrafiltration membrane, which substantially comprises a phenylene sulfide copolymer represented by the formula (-Ph-S-)m(-Ph-X-)n and which has a nonuniform structure wherein a dense layer or layers substantially governing the separating function of the membrane are formed on one side or both sides of the membrane and a porous layer having a larger void volume is formed in contact with said dense layer. In said formula Ph represents a phenylene group, X represents -SO2 - or -CO-, and m and n each represents a natural number.
(FR)
Membrane poreuse présentant une excellente durée, utile en tant que membrane d'ultrafiltration, comprenant essentiellement un copolymère de sulfure de phénylène représenté par la formule (-Ph-S-m(-Ph-X-)n et présentant une structure non uniforme dans laquelle une ou plusieurs couches denses régulant essentiellement la fonction de séparation de la membrane sont formées sur un côté ou sur les deux côtés de la membrane et une couche poreuse présentant un volume de cavités plus important est formée en contact avec ladite couche dense. Dans ladite formule, Ph représente un groupe phénylène, X représente -SO2- ou -CO-, et m et n représentent chacun un nombre naturel.
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