EP 0951498 A1 19991027 - MELT-SPUN POLYSULFONE SEMIPERMEABLE MEMBRANES AND METHODS FOR MAKING THE SAME
Title (en)
MELT-SPUN POLYSULFONE SEMIPERMEABLE MEMBRANES AND METHODS FOR MAKING THE SAME
Title (de)
SCHMELZGESPONNENE HALBDURCHLÄSSIGE MEMBRANEN AUS POLYSULFON UND VERFAHREN ZU DEREN HERSTELLUNG
Title (fr)
MEMBRANES SEMI-PERMEABLES POLYSULFONES FILEES PAR FUSION ET LEURS PROCEDES DE FABRICATION
Publication
Application
Priority
- US 9724087 W 19971230
- US 77473296 A 19961231
- US 93268097 A 19970918
Abstract (en)
[origin: WO9829478A1] The present invention discloses, inter alia, a composition useful for producing a homogeneous, semipermeable membrane, the composition comprising (1) a polysulfone compound, (2) a solvent, such as sulfolane, antypyrine, delta -valerolactam, diethyl phthalate, and mixtures thereof, and (3) a non-solvent, such as poly(ethylene glycol), di(ethylene glycol), tri(ethylene glycol), glycerol, and mixtures thereof. Another aspect of this invention discloses methods for fabricating semipermeable membranes by homogeneously mixing the composition of the polysulfone compound, solvent, and non-solvent, melting the composition, and melt-spinning the molten composition. Another aspect of the present invention includes homogeneous, melt-spun, semipermeable membranes useful for liquid separation processes, such as, but not limited to, microfiltration, ultrafiltration, dialysis, and reverse osmosis.
IPC 1-7
IPC 8 full level
B01D 67/00 (2006.01); B01D 69/08 (2006.01); B01D 71/68 (2006.01); C08J 3/09 (2006.01); C08K 5/00 (2006.01); C08L 81/06 (2006.01)
CPC (source: EP KR US)
B01D 67/0011 (2013.01 - EP); B01D 67/00113 (2022.08 - US); B01D 67/002 (2013.01 - EP); B01D 67/0027 (2013.01 - EP); B01D 67/003 (2013.01 - EP); B01D 69/08 (2013.01 - EP); B01D 71/68 (2013.01 - EP); C08J 3/09 (2013.01 - KR); C08J 3/091 (2013.01 - EP); B01D 2323/08 (2013.01 - EP); B01D 2323/081 (2022.08 - US); B01D 2323/12 (2013.01 - EP); C08J 2381/06 (2013.01 - EP)
Designated contracting state (EPC)
AT DE ES GB SE
DOCDB simple family (publication)
WO 9829478 A1 19980709; AU 5724898 A 19980731; AU 736217 B2 20010726; BR 9714445 A 20000321; CA 2272364 A1 19980709; CN 1149250 C 20040512; CN 1242025 A 20000119; EP 0951498 A1 19991027; IL 130129 A0 20000601; IL 130129 A 20061210; JP 2001507741 A 20010612; JP 2007237178 A 20070920; KR 100523499 B1 20051025; KR 20000069825 A 20001125; MX 210067 B 20020902; MX 9906130 A 20000430; RU 2198725 C2 20030220; SG 97184 A1 20030718; TR 199901514 T2 19990921
DOCDB simple family (application)
US 9724087 W 19971230; AU 5724898 A 19971230; BR 9714445 A 19971230; CA 2272364 A 19971230; CN 97181040 A 19971230; EP 97953516 A 19971230; IL 13012997 A 19971230; IL 13012999 A 19990525; JP 2007106590 A 20070413; JP 53028098 A 19971230; KR 19997005987 A 19990630; MX 9906130 A 19990629; RU 99116352 A 19971230; SG 200104000 A 19971230; TR 9901514 T 19971230