Coupling of polyorganophosphazenes to carboxylic acid
AssigneeResearch Corporation
InventorsHarry R. Allcock, Thomas X. Neenan, Walter C. Kossa
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Abstract
A carboxylated phosphazene polymer, comprising a phosphazene polymer backbone covalently coupled to a carboxylate-containing compound through a divalent organic radical attached at one end to the carboxylate by an amide bond formed at a primary aliphatic amino group of the radical and at the other end to a phosphorous of the phosphazene backbone.
Claims32
A carboxylated phosphazene polymer, comprising a phosphazene polymer backbone covalently coupled to a carboxylate-containing compound through a linking group attached at one end to said carboxylate-containing compound by an amide bond formed at a primary aliphatic amino group of said linking group and at the other end of said linking group to a phosphorous of said backbone.
A phosphazene polymer, comprising a phosphazene polymer backbone covalently coupled to a radical of the formula ##STR33## wherein A is O or NH;
- m is an integer from 0 to 4;
- each R.sup.1 independently represents an alkyl group containing 1 to 4 carbon atoms, a nitro group, a cyano group, or a halogen atom;
- and
- Y is --CH.sub.2 NH.sub.2 or --CN,
- wherein A is covalently attached to a phosphorous of said phosphazene polymer backbone.
A method of attaching a compound having a carboxylic acid functional group to a phosphazene polymer, comprising condensing under suitable condensation conditions said compound with a polyorganophosphazene having a primary aliphatic amino group in an organic radical of said polyorganophosphazene to give an amide bond.
Dependencies are inferred from the claim text.