Layered sulfonate end terminated organophosphorus inorganic polymers
AssigneeOccidental Research Corporation
InventorsPeter M. DiGiacomo, Martin B. Dines
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Abstract
Sulfo-organophosphonic acid compounds react by a metathesis reaction in a liquid medium with tetravalent metal ions, yielding layered crystalline to amorphous inorganic polymers having the empirical formula M(O.sub.3 PRSO.sub.3 H).sub.2 where M is a tetravalent metal and R is an organic group covalently bonded to phosphorus and the terminal sulfonic acid group. One use for the compounds is as ion exchangers.
Claims9
Inorganic phosphorus containing polymers providing pendant sulfonic acid groups, and which include units of the formula:
- M (O.sub.3 P--R--SO.sub.3 H).sub.2
- wherein R is an organo group and oxygen atoms are bonded to phosphorus and structurally linked to a tetravalent metal selected from the group consisting of zirconium, cerium, thorium, uranium, hafnium, lead, titanium and mixtures thereof and wherein the molar ratio of phosphorus to tetravalent metal in said inorganic phosphorus containing polymer is about 2 to 1.
Inorganic phosphonate polymers having the empirical formula
- M(O.sub.3 PRSO.sub.3 H).sub.2
- wherein R is an organo group which bonds to phosphorus through carbon and M is a tetravalent metal ion selected from the group consisting of zirconium, cerium, thorium, titanium, uranium, hafnium, and lead.
Inorganic polymers of zirconium 3-sulfopropylphosphonate.
Inorganic polymers of zirconium 2-sulfoethylphosphonate.
Inorganic polymers of zirconium 2-(sulfophenyl) ethylphosphonate.
Dependencies are inferred from the claim text.