TETRABLOCK COPOLYMERS AND ARTICLES MADE THEREFROM

Tetrablock copolymers of formula ABAC are provided that can be used to form porous articles such as porous hollow fibers and porous membranes. Each A block is formed from a vinyl aromatic monomer, the B block is formed from a conjugated diene monomer, and the C block is formed from at least two diff...

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Bibliographische Detailangaben
Hauptverfasser:	Laskowski, Carl A, Waller, Jr., Clinton P, Gillard, Timothy M, McIntosh, Lucas D
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED 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:	Tetrablock copolymers of formula ABAC are provided that can be used to form porous articles such as porous hollow fibers and porous membranes. Each A block is formed from a vinyl aromatic monomer, the B block is formed from a conjugated diene monomer, and the C block is formed from at least two different oxirane (i.e., epoxy) compounds. The tetrablock copolymers can advantageously be prepared without the use of functional initiators and/or difunctional initiators. The tetrablock copolymers are well suited for solvent induced phase separation (SIPS) processing to prepare porous articles. Membranes formed from the tetrablock copolymers can be used for water treatment and biopharmaceutical purification and/or separation processes.