C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
400/8102, 182/15
C08J 3/11 (2006.01) B01D 67/00 (2006.01) B01D 71/52 (2006.01) C08J 3/09 (2006.01) C08L 65/00 (2006.01) C08L 71/00 (2006.01)
Patent
CA 1276361
Abstract Sulphonated Polyaryletherketone Solutions For Semi-permeable Membranes Solutions of sulphonate polyaryletherketones in a solvent mixture of at least three liquids or low melting solids which are non- solvents or poor solvents for the polymer, can be used to produce asymmetric semi-permeable membranes. The polymer may be a polymer of ? Ph1 - O - Ph2 - O - Ph1 - CO ? and optionally ? Ph1 - O - Ph1 - CO ? and ? Ph1 - O - Ph1 - O - Ph1 - CO ? wherein Ph1 and Ph2 are respectively unsulphonated and sulphonated phenylene residues. The components of the solvent mixture have specified solubility parameters. A suitable solvent mixture is one formed from water, 1,4-dioxane and acetonitrile.
495088
Hendy Brian N.
Smith John W.
Barlow Charles Brian
Hendy Brian N.
Imperial Chemical Industries Plc
Smith John W.
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