US 4,481,167 A · Sanitizing complexes of polyoxazolines or polyoxazines and polyhalide anions

Abstract

The title complexes comprise (a) a poly-2-oxazoline or poly-2-oxazine, such as the homopolymers of polymerized 2-ethyl-2-oxazoline or 2-ethyl-2-oxazine, and (b) IBrCl.sup.- or polyhalide anion of the formula (XY.sub.2n).sup.- where X and Y are individually chloride, bromide or iodide, but not both chloride, and n is 1, 2 or 3, and an independently supplied cation selected from the group consisting of alkali metals, alkaline earth metals, hydrogen and mixtures thereof. These complexes are readily prepared in either an aqueous or anhydrous environment at room temperature and are significantly more stable than either complexes of polyoxazolines or polyoxazines and halogen or interhalogen; or complexes of polyvinylpyrrolidone and polyhalide anions.

Claims21

Dependent claims

A water-soluble solid complex comprising:

(a) a polymer comprising a plurality of ring-opened units of a 2-oxazoline or 2-oxazine monomer corresponding to the formula ##STR6## where R.sub.1 -R.sub.4 are hydrogen or C.sub.1 -C.sub.3 alkyl, R.sub.5 is hydrogen or alkyl having up to about 18 carbon atoms, phenyl, or an inertly-substituted alkyl or phenyl, and x is 0 or 1;
(b) IBrCl.sup.- or a polyhalide anion of the formula (XY.sub.2n).sup.- where X and Y are individually chloride, bromide or iodide, but not both chloride, and n is 1, 2 or 3;
and
(c) a cation independently supplied from sources external to the polymer and selected from the group consisting of alkali metals, alkaline earth metals, hydrogen and mixtures thereof with the proviso that when the cation is hydrogen the ratio of halogen to halide in the complex is less than about 1:0.4.

1 more element

Dependencies are inferred from the claim text.

Sanitizing complexes of polyoxazolines or polyoxazines and polyhalide anions

Life of this patent

Sanitizing complexes of polyoxazolines or polyoxazines and polyhalide anions

Life of this patent

Abstract

Claims21