Aliphatic polysulfones with improved mechanical integrity
AssigneeUniversity of Florida Research Foundation, Inc.
InventorsKenneth B. WAGENER, Taylor W. GAINES, Michael BELL, Julia Grace PRIBYL
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Abstract
A polysulfone has sulfone units that are separated by alkylene units in a polymer chain or a copolymer chain where the alkylene units have at least four carbons between sulfone units. The alkylene units can include an ethenylene unit separated from the sulfone units by at least one methylene units. The polysulfones can be crosslinked for enhanced thermal stability. Membranes can be formed from the polysulfones.
Claims15
A method of preparing a polysulfone having a multiplicity of sulfone units separated by alkylene units in a polymer chain or a copolymer chain, the method comprising:
- providing a monomer mixture comprising a multiplicity of at least one α,ω-bis-vinylalkylsulfone monomer and/or a cycloalkenylsulfone wherein a double bond is separated from the sulfone by at least one methylene unit;
- adding a metathesis catalyst to the monomer mixture;
- removing ethylene to form a polymer comprising a multiplicity of sulfone units separated by alkylene units wherein the ethenylene units comprise ethenylene unit separated from the sulfone units by at least one methylene unit of the alkylene unit, and
- optionally, reducing at least a portion of the ethenylene units and/or reacting at least a portion of the ethenylene units to form crosslinking units.
Dependencies are inferred from the claim text.