US5154932A
Expired / Lapsed
US
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Antimicrobial positively charged particles
Assignee: Dow Chemical Co
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Filing: 1990-09-04
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Granted: 1992-10-13
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Expires: 2010-09-04
Abstract
Abstract Formulations or products are caused to be active antimicrobials by the addition thereto of at least one effective amount of at least one crystalline mixed metal hydroxide (MMOH) conforming substantially to the formula Li.sub.m D.sub.d T(OH) (m+2d+3+na) (A.sup.n).sub.a.xH.sub.2 O where m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents at least one anion or negative-valence radical, (m+2d+3+na) is equal or to greater than 3, (m+d) is greater than zero, and xH 2 O represents excess waters of hydration. The MMOH forms an adduct with, an coats, the microbes, thereby deactivating the microbes.
Inventors
- 👤 John L. Burba, III
- 👤 John L. Alexander
- 👤 Arthur E. Read, Jr.
- 👤 Wilfred W. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:27
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/845; C01; C01B; C01B13/00; C01B13/14; C01B13/36; C01B13/363; C01B33/00; C01B33/20; C01B33/26; C01B33/36; C01B33/38; C01B33/40; C01B33/44; C01F; C01F7/00; C01F7/78; C01F7/784; C01F7/786; C09K3/00; C09K8/02; C09K8/03; C09K8/032; C09K8/04; C09K8/14; C09K8/145; C09K8/62; C09K8/66; C09K8/665; C10; C10M; C10M113/00; C10M125/00; C10M125/10; C10M173/00; C10M173/02; C10M177/00; C01P; C01P2002/00; C01P2002/20; C01P2002/22; C01P2002/60; C01P2004/00; C01P2004/20; C01P2006/00; C01P2006/22; C10M2201/00; C10M2201/02; C10M2201/022; C10M2201/06; C10M2201/0606; C10M2201/061; C10M2201/0616; C10M2201/062; C10M2201/0626; C10M2201/063; C10M2201/065; C10M2201/0656; C10M2201/066; C10M2201/0666; C10M2201/08; C10M2201/0806; C10M2201/085; C10M2201/0856; C10M2201/086; C10M2201/0866; C10M2201/087; C10M2201/0876; C10M2201/10; C10M2201/1013; C10M2201/102; C10M2201/1026; C10M2201/103; C10M2201/1036; C10M2201/14; C10M2201/145; C10M2201/16; C10M2201/18; C10M2227/00; C10M2227/09; C10N; C10N2010/00; C10N2010/04; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
181 words
A method for providing antimicrobial activity to a formulation or product, effective for deactivating microorganisms which have negative surface charges, said method comprising adding to the formulation or product an amount of a positively charged layered crystalline mixed metal hydroxide sufficient to impart antimicrobial activity to the formulation or product, said mixed metal hydroxide being at least one compound conforming substantially to the empirical formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) (A.sup.n).sub.a.xH.sub.2 O where m is an amount of Li of from zero to one, where D represents at least one divalent metal cation and d is an amount of from about zero to about 4, where T represents at least one trivalent metal cation, wherein A represents at least one monovalent or polyvalent anion or negative-valence radical or valence n, a is an amount of A ions of valence n, with na being an amount of from about zero to about -3, where (m+2d+3+na) is equal to or greater than 3, where (m+d) is greater than zero, and where xH 2 O represents excess waters of hydration, with x being zero or more.
Claim 2
Independent Claim
181 words
A method for providing antimicrobial activity to a formulation or product, effective for deactivating microorganisms which have negative surface charges, said method comprising adding to the formulation or product an amount of a positively charged layered crystalline mixed metal hydroxide sufficient to impart antimicrobial activity to the formulation or product, said mixed metal hydroxide being at least one compound conforming substantially to the empirical formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) (A.sup.n).sub.a.xH.sub.2 O where m is an amount of Li of from zero to one, where D represents at least one divalent metal cation and d is an amount of from about zero to about 4, where T represents at least one trivalent metal cation, wherein A represents at least one monovalent or polyvalent anion or negative-valence radical or valence n, a is an amount of A ions of valence n, with na being an amount of from about zero to about -3, where (m+2d+3+na) is equal to or greater than 3, where (m+d) is greater than zero, and where xH 2 O represents excess waters of hydration, with x being zero or more.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein the formulation or product is a cleaning solution.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein the formulation or product is a fungicide.
Claim 5
Dependent Claim
15 words
The method of claim 1 wherein the formulation or product is a personal care product.
Claim 6
Dependent Claim
16 words
The method of claim 1 wherein the formulation or product is a soap, detergent, or surfactant.
Claim 7
Dependent Claim
13 words
The method of claim 1 wherein the formulation or product is a lotion.
Claim 8
Dependent Claim
13 words
The method of claim 1 wherein the formulation or product is a salve.
Claim 9
Dependent Claim
13 words
The method of claim 1 wherein the formulation or product is an antiseptic.
Claim 10
Dependent Claim
30 words
The method of claim 1 wherein the D metal is at least one selected from the group consisting of Mg, Ca, Ba, Sr, Mn, Fe, Co, Ni, Cu, and Zn.
Claim 11
Dependent Claim
21 words
The method of claim 1 wherein the D metal is at least one of the group consisting of Ca and Mg.
Claim 12
Dependent Claim
23 words
The method of claim 1 wherein the T metal is at least one selected from the group consisting of Al, Fe, and Ga.
Claim 13
Dependent Claim
11 words
The method of claim 1 wherein the T metal is Al.
Claim 14
Dependent Claim
25 words
The method of claim 1 wherein m is zero, d is one, and na is an amount in the range of zero to negative one.
Claim 15
Dependent Claim
16 words
The method of claim 1 wherein A represents at least one inorganic anion or negative-valence radical.
Claim 16
Dependent Claim
13 words
The method of claim 1 wherein A represents a hydrophilic organic negative-valence group.
Claim 17
Dependent Claim
54 words
The method of claim 1 wherein the mixed meal hydroxide is MgAl(OH).sub.(5+na) (A n ) a .xH 2 O), where n.a is an amount of from zero to negative one, where A is an anion other than OH - and xH 2 O represents excess waters of hydration, with x being zero or more.
Claim 18
Dependent Claim
12 words
The method of claim 16 wherein the A anion is a halide.
Claim 19
Dependent Claim
11 words
The method of claim 16 wherein the A anion is chloride.
Claim 20
Independent Claim
209 words
A method for providing antimicrobial activity to a formulation or product, effective for deactivating microorganisms which have negative surface charges, said method comprising adding to the formulation or product an amount of a positively charged layer crystalline mixed metal hydroxide sufficient to impart antimicrobial activity to the formulation or product, said mixed metal hydroxide being at least one compound conforming substantially to the empirical formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) (A.sup.n).sub.a.xH.sub.2 O where m is an amount of Li of from zero to one, where D represents at least one divalent metal cation and D is an amount of from about zero to about 4, where T represents at least one trivalent metal cation, where A represents at least one monovalent or polyvalent anion or negative-valence radical of valence n, a is an amount of A ions of valence n, with na being an amount of from about zero to about -3, where (m+2d+3+na) is equal to or greater than 3, where (m+d) is greater than zero, and where xH 2 O represents excess waters of hydration, with x being zero or more, further characterized in that the A anion represents at least one of the group consisting of hydroxyl, halide, nitrate, phosphate, carbonate, glycolate, lignosulfate, and polycarboxylic or negative-valence radicals.
Claim 21
Independent Claim
209 words
A method for providing antimicrobial activity to a formulation or product, effective for deactivating microorganisms which have negative surface charges, said method comprising adding to the formulation or product an amount of a positively charged layer crystalline mixed metal hydroxide sufficient to impart antimicrobial activity to the formulation or product, said mixed metal hydroxide being at least one compound conforming substantially to the empirical formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) (A.sup.n).sub.a.xH.sub.2 O where m is an amount of Li of from zero to one, where D represents at least one divalent metal cation and D is an amount of from about zero to about 4, where T represents at least one trivalent metal cation, where A represents at least one monovalent or polyvalent anion or negative-valence radical of valence n, a is an amount of A ions of valence n, with na being an amount of from about zero to about -3, where (m+2d+3+na) is equal to or greater than 3, where (m+d) is greater than zero, and where xH 2 O represents excess waters of hydration, with x being zero or more, further characterized in that the A anion represents at least one of the group consisting of hydroxyl, halide, nitrate, phosphate, carbonate, glycolate, lignosulfate, and polycarboxylic or negative-valence radicals.
Claim 22
Independent Claim
196 words
A method for providing antimicrobial activity to a formulation or product, effective for deactivating microorganisms which have negative surface charges, said method comprising adding to the formulation or product an amount of a positively charged layered crystalline mixed metal hydroxide sufficient to impart antimicrobial activity to the formulation or product, said mixed metal hydroxide being at least one compound conforming substantially to the empirical formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) (A.sup.n).sub.a.xH.sub.2 O where m is an amount of Li of from zero to one, where D represents at least one divalent metal cation and d is an amount of from about zero to about 4, where T represents at least one trivalent metal cation, where A represents at least one monovalent or polyvalent anion or negative-valence radical of valence n, a is an amount of A ions of valence n, with na being an amount of from about zero to about -3, where (m+2d+3+na) is equal to or greater than 3, where (m+d) is greater than zero, and where xH 2 O represents excess waters of hydration, with x being zero or more, further characterized in that the crystalline mixed metal hydroxide is of the monodispersed, monolayer variety.
Claim 23
Independent Claim
196 words
A method for providing antimicrobial activity to a formulation or product, effective for deactivating microorganisms which have negative surface charges, said method comprising adding to the formulation or product an amount of a positively charged layered crystalline mixed metal hydroxide sufficient to impart antimicrobial activity to the formulation or product, said mixed metal hydroxide being at least one compound conforming substantially to the empirical formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) (A.sup.n).sub.a.xH.sub.2 O where m is an amount of Li of from zero to one, where D represents at least one divalent metal cation and d is an amount of from about zero to about 4, where T represents at least one trivalent metal cation, where A represents at least one monovalent or polyvalent anion or negative-valence radical of valence n, a is an amount of A ions of valence n, with na being an amount of from about zero to about -3, where (m+2d+3+na) is equal to or greater than 3, where (m+d) is greater than zero, and where xH 2 O represents excess waters of hydration, with x being zero or more, further characterized in that the crystalline mixed metal hydroxide is of the monodispersed, monolayer variety.
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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) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |