US4481167A
Expired / Lapsed
US
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Sanitizing complexes of polyoxazolines or polyoxazines and polyhalide anions
Assignee: Dow Chemical Co
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Filing: 1981-07-01
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Granted: 1984-11-06
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Expires: 2001-07-01
Abstract
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 - or polyhalide anion of the formula (XY 2n ) - 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.
Inventors
- 👤 Sally P. Ginter
- 👤 Percy J. Hamlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:55
CPC Classifications
A; A01; A01N; A01N59/00; A01N59/12; C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C08G73/0233
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
150 words
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 1 -R 4 are hydrogen or C 1 -C 3 alkyl, R 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 - or a polyhalide anion of the formula (XY 2n ) - 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.
Claim 2
Dependent Claim
150 words
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 1 -R 4 are hydrogen or C 1 -C 3 alkyl, R 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 - or a polyhalide anion of the formula (XY 2n ) - 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.
Claim 3
Dependent Claim
25 words
The complex of claim 1 wherein R 1 -R 4 are hydrogen, R 5 is a C 1 -C 4 alkyl and x is 0.
Claim 4
Dependent Claim
9 words
The complex of claim 1 wherein (a) is poly(2-ethyl-2-oxazoline).
Claim 5
Dependent Claim
12 words
The complex of claim 1 wherein (c) is hydrogen, sodium or potassium.
Claim 6
Dependent Claim
9 words
The complex of claim 1 wherein (c) is hydrogen.
Claim 7
Dependent Claim
9 words
The complex of claim 1 wherein (c) is potassium.
Claim 8
Dependent Claim
30 words
The complex of claim 1 wherein said cation is present in an amount of at least 10 percent of the stoichiometric equivalent of the IBrCl - or the polyhalide anion.
Claim 9
Dependent Claim
30 words
The complex of claim 1 wherein said cation is present in an amount of at least 90 percent of the stoichiometric equivalent of the IBrCl - or the polyhalide anion.
Claim 10
Dependent Claim
29 words
The complex of claim 1 wherein said cation is present in an amount about stoichiometrically equivalent to, or greater than stoichiometrically equivalent to the IBrCl - or the polyhalide.
Claim 11
Dependent Claim
12 words
The complex of claim 1 wherein (b) is IBr 2 - .
Claim 12
Dependent Claim
12 words
The complex of claim 1 wherein (b) is I 3 - .
Claim 13
Dependent Claim
22 words
The complex of claim 1, 10 or 11 wherein (a) has a weight average molecular weight between about 20,000 and about 500,000.
Claim 14
Dependent Claim
13 words
An aqueous solution of the complex defined by claim 1, 10 or 11.
Claim 15
Dependent Claim
27 words
The complex of claim 1 wherein the polymerization of the polymer (a) is initiated by an organic compound which imparts detectable hydrophobic character to the resulting polymer.
Claim 16
Dependent Claim
59 words
The complex of claim 14 wherein (a) is prepared from the ring-opening polymerization of 2-oxazoline and/or 2-oxazine monomers initiated by at least one member selected frowm the group consisting of a sulfonyl halide of a C 8 -C 40 hydrocarbon; an ester of an organic acid; a C 8 -C 40 alkyl halide; or a diphenyl ether sulfonyl halide.
Claim 17
Dependent Claim
45 words
The complex of claim 1 wherein (a) is of the formula ##STR7## where m is the total number of units, h is the number of acylated units, m-h is the number of deacylated units, and R 1 -R 5 and x are as previously defined.
Claim 18
Dependent Claim
14 words
The complex of claim 16 wherein h is at least 50 percent of m.
Claim 19
Dependent Claim
14 words
The complex of claim 16 wherein h is at least 75 percent of m.
Claim 20
Dependent Claim
156 words
An aqueous complex made by a method comprising contacting: (a) a polymer comprising a plurality of ring-opened units of a 2-oxazoline or 2-oxazine monomer corresponding to the formula ##STR8## where R 1 -R 4 are hydrogen or C 1 -C 3 alkyl, R 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 - or a polyhalide anion of the formula (XY 2n ) - where X and Y are individually chloride, bromide or iodide, but not both chloride, and n is 1, 2 or 3; (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; and (d) water.
Claim 21
Dependent Claim
156 words
An aqueous complex made by a method comprising contacting: (a) a polymer comprising a plurality of ring-opened units of a 2-oxazoline or 2-oxazine monomer corresponding to the formula ##STR8## where R 1 -R 4 are hydrogen or C 1 -C 3 alkyl, R 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 - or a polyhalide anion of the formula (XY 2n ) - where X and Y are individually chloride, bromide or iodide, but not both chloride, and n is 1, 2 or 3; (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; and (d) water.
Claim 22
Dependent Claim
18 words
The aqueous solution of claim 19 wherein the cation is contacted in the form of a halide salt.
Claim 23
Independent Claim
29 words
A method for sanitizing or disinfecting a substrate contaminated with microorganisms comprising contacting said substrate with an aqueous solution of the complex of claims 1, 10, 11 or 19.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |