`
`CLAIMS
`
`UF.1133P
`
`Weclaim:
`
`1.
`
`A sulfonated polyethylene, comprising a polymethylene backbone with substituted
`
`methylene units having one or two sulfonic acid groupsor salts of the sulfonic acid groups,
`
`wherein the substituted methylene units are periodically, quasiperiodically, or quasirandomly
`
`separated by unsubstituted methylene units along the polymer backbone.
`
`2.
`
`The sulfonated polyethylene of claim 1, wherein the individual sulfonic acid groups or
`
`the salts of the sulfonic acid groups are periodically separated from each other by x methylene
`
`units, wherein x is 4 to 40 or more.
`
`3.
`
`The sulfonated polyethylene of claim 1, wherein the individual sulfonic acid groups or
`
`the salts of the sulfonic acid groups are quasiperiodically, or quasirandomly separated from each
`
`other by an average of x methylene units, wherein x is 4.1 to 40 or more.
`
`4,
`
`The sulfonated polyethylene of claim 1, wherein the salts of the sulfonic acid groups are
`
`alkali metal salts.
`
`5.
`
`The sulfonated polyethylene of claim 1, wherein the salts of the sulfonic acid groups are
`
`monovalent, divalent, or polyvalent metal salts, wherein the metal salts are of a single metal or a
`
`plurality of different metals.
`
`6.
`
`A sulfonated poly(a,@-alkyldiene), comprising a polymethylene backbone with
`
`substituted methylene units having one or two sulfonic acid groupsorthe salts of the sulfonic
`
`acid groups, wherein the substituted methylene units alternate with 1,2-ethylene units and are
`
`periodically, quasiperiodically, or quasirandomly separated along the polymer backbone by
`
`unsubstituted methylene units.
`
`JNUF\1133P\Application\Application.doc\mab
`
`
`
`11
`
`UF.1133P
`
`7.
`
`A method of preparing a sulfonated polyethylene according to claim 1, comprising:
`
`providing a precursor sulfinated ester polyethylene comprising a polymethylene
`
`backbone with substituted methylene units having one or two sulfonic ester groups, wherein the
`
`substituted methylene units are periodically, quasiperiodically, or quasirandomly separated by
`
`unsubstituted methylene units along the polymer backbone;
`
`suspending the precursor sulfinated ester polyethylene in a polar aprotic liquid
`
`that is a non-solvent for the precursor sulfinated polyethylene to form a suspension;
`
`adding a strong base to the suspension, and
`
`agitating the suspension with the strong base until the suspension is converted into
`
`a solution, wherein the solution comprises a sulfonated polyethylene where the sulfonated groups
`
`are the salts of sulfonic acids.
`
`8.
`
`9.
`
`The methodof claim 7, wherein the polar aprotic liquid is DMSO.
`
`The method of claim 7, further comprising adding a strong acid to the sulfonated
`
`polyethylene comprising the salts of sulfonic acids to convert the salts of sulfonic acids to the
`
`sulfonic acids.
`
`9,
`
`A membrane, comprising a sulfonated polyethylene according to claim 1.
`
`J:\UF\1133P\Application\Application.doc\mab
`
`
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