HYDROPHILIC BLOCK COPOLYMERS AND MEMBRANES PREPARED THEREFROM

Disclosed is a block copolymer of the formula: A-B-A (I) or A-B (II), wherein block A is: (i) a polymer of allyl glycidyl ether or (ii) a polymer of allyl glycidyl ether wherein one more of the allyl groups have been replaced with 1,2-dihydroxypropyl group or a group of the formula: -(CH 2 ) a -S-(C...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ONYEMAUWA, Frank Okezie, AIT-HADDOU, Hassan
Format:	Patent
Sprache:	eng ; fin
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING
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Beschreibung
Zusammenfassung:	Disclosed is a block copolymer of the formula: A-B-A (I) or A-B (II), wherein block A is: (i) a polymer of allyl glycidyl ether or (ii) a polymer of allyl glycidyl ether wherein one more of the allyl groups have been replaced with 1,2-dihydroxypropyl group or a group of the formula: -(CH 2 ) a -S-(CH 2 ) b -X, wherein a, b, and X are defined herein. The block copolymers find use as wetting agents in the preparation of porous membranes from aromatic hydrophobic polymers such as polyethersulfone. Also disclosed are methods of preparing such block copolymers and porous membranes therefrom.