US4377608A
Expired / Lapsed
US
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Method of modifying a substrate
Assignee: Dow Silicones Corp
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Filing: 1981-06-26
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Granted: 1983-03-22
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Expires: 2001-06-26
Abstract
Abstract Aqueous metal ammine siliconate solutions are the reaction products of selected metals or metal derivatives, selected mono-organosilicon materials, certain alkaline nitrogen compounds having the formula R--NH 2 , and water. Amorphous materials are formed when volatiles are removed from the siliconate solutions. The metal components in the resulting amorphous materials are not readily leached out by normal weathering, washing or the like. The solutions are useful in a method for treating substrates, such as wood, textiles, thread, canvas, carpeting, paper and masonry, to confer antimicrobial properties. The organosilicon component can be selected so that such treatments also confer either hydrophobic or hydrophilic properties to the substrates. The components of the solutions can be selected to enhance their ability to form continuous films of amorphous materials when used in such treatments, making the solutions useful to provide antimicrobial coatings which may be either hydrophobic or hydrophilic. Such amorphous coatings are useful for applications such as wood preservation, masonry water repellents, marine varnishes and as treating agents to give a desirable hand to fabrics. Powdered amorphous materials can be used to produce antimicrobial ointments. The solutions are useful as hardeners for water-reducible resins and emulsions, including latex paints. The solutions can also be adapted to include components which may be slowly leachable from the resulting amorphous materials which can thus serve as controlled-release binders to provide prolonged antimicrobial protection not only to the treated surfaces but also to their immediate surroundings.
Inventors
- 👤 William H. Daudt
- 👤 Cecil L. Frye
- 👤 James F. Hyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:10
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/36; A; A01; A01N; A01N55/00; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K8/89; A61K8/891; A61K8/893; A61Q; A61Q17/00; A61Q17/005; C; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08L; C08L83/00; C08L83/04; C08L83/08
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
289 words
A method of modifying a substrate, the method comprising the steps of: (A) applying to the substrate an aqueous metal ammine siliconate solution comprising the reaction products of (a) oxides and hydroxides of metal, metal derivatives or mixtures thereof which are selected from a group consisting essentially of metals of group IB and metals of group IIB of the Periodic Table of the Elements, which are not more acidic than the silanols or siloxanols produced in (c), which dissolve in the reaction mixture to yield metal ammine cations in the presence of R--NH 2 ; (b) R--NH 2 where R is H, aminoalkyls with 2-6 carbon atoms, or mixtures thereof and wherein the --NH 2 molar concentration is equal to at least n times the molar concentration of the metal or metal derivative where n is the coordination number of the metal; (c) a mono-organosilicon material which can undergo hydrolysis in the presence of the other reactants to yield mono-organnosilanols or siloxanols and hydrolysis products which are not more acidic than the silanols or siloxanols wherein the organo moiety in the mono-organosilicon material contains up to about 50 carbon atoms and is selected from the group consisting of saturated and unsaturated hydrocarbons having from 1 to about 6 carbon atoms, halohydrocarbons having up to 6 carbon atoms and wherein the halo substitution is at a location other than the alpha or beta locations, aminohydrocarbons, radicals containing one or more ether or thioether linkages, hydroxyfunctional alkyl radicals, carbomethoxyalkyl radicals, carbamoyalkoxy radicals, quaternary ammonium or phosphonium bearing alkyl radicals and mixtures thereof, the mono-organosilicon material being present in an amount sufficient to yield a silicon/metal ratio of from about 1 to about 10; and (d) water; and (B) evaporating the volatiles.
Claim 2
Independent Claim
289 words
A method of modifying a substrate, the method comprising the steps of: (A) applying to the substrate an aqueous metal ammine siliconate solution comprising the reaction products of (a) oxides and hydroxides of metal, metal derivatives or mixtures thereof which are selected from a group consisting essentially of metals of group IB and metals of group IIB of the Periodic Table of the Elements, which are not more acidic than the silanols or siloxanols produced in (c), which dissolve in the reaction mixture to yield metal ammine cations in the presence of R--NH 2 ; (b) R--NH 2 where R is H, aminoalkyls with 2-6 carbon atoms, or mixtures thereof and wherein the --NH 2 molar concentration is equal to at least n times the molar concentration of the metal or metal derivative where n is the coordination number of the metal; (c) a mono-organosilicon material which can undergo hydrolysis in the presence of the other reactants to yield mono-organnosilanols or siloxanols and hydrolysis products which are not more acidic than the silanols or siloxanols wherein the organo moiety in the mono-organosilicon material contains up to about 50 carbon atoms and is selected from the group consisting of saturated and unsaturated hydrocarbons having from 1 to about 6 carbon atoms, halohydrocarbons having up to 6 carbon atoms and wherein the halo substitution is at a location other than the alpha or beta locations, aminohydrocarbons, radicals containing one or more ether or thioether linkages, hydroxyfunctional alkyl radicals, carbomethoxyalkyl radicals, carbamoyalkoxy radicals, quaternary ammonium or phosphonium bearing alkyl radicals and mixtures thereof, the mono-organosilicon material being present in an amount sufficient to yield a silicon/metal ratio of from about 1 to about 10; and (d) water; and (B) evaporating the volatiles.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein evaporation of the volatiles is aided by heating or pressure reduction or both.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein the substrate is an absorbent material.
Claim 5
Dependent Claim
18 words
The method of claim 3 wherein the substrate is selected from the group consisting of cellulosics and masonrys.
Claim 6
Dependent Claim
12 words
The method of claim 1 wherein the substrate is a non-absorbent material.
Claim 7
Independent Claim
20 words
The method of claims 3 or 5 wherein the substrate is selected from the group consisting of fibers and fabrics.
Claim 8
Dependent Claim
20 words
The method of claim 1 wherein the organo moiety in (c) is selected to confer hydrophobic properties to the substrate.
Claim 9
Dependent Claim
23 words
The method of claim 7 wherein the organo moiety is an alkyl radical containing from 1 to 6 carbon atoms or mixtures thereof.
Claim 10
Dependent Claim
20 words
The method of claim 1 wherein the organo moiety in (c) is selected to confer hydrophilic properties to the substrate.
Claim 11
Dependent Claim
56 words
The method of claim 9 wherein the organo moiety are selected from the group consisting of Cl.sup.⊖ Me 3 N.sup.⊕ CH 2 CH 2 CH 2 --, HO(CH 2 CH 2 O) x CH 2 CH 2 CH 2 -- NH 2 CH 2 CH 2 NHCH 2 CH 2 CH 2 --, and mixtures thereof.
Claim 12
Dependent Claim
29 words
The method of claim 1 wherein the organo moiety in (c) is selected to enhance the film-forming properties of the solutions of claim 1 upon evaporation of the volatiles.
Claim 13
Dependent Claim
13 words
The method of claim 11 wherein the organo moiety contains the carbamoyl function.
Claim 14
Dependent Claim
16 words
The method of claim 1 wherein evaporation of the volatiles is carried out under ambient conditions.
Claim 15
Dependent Claim
12 words
The method of claim 13 wherein the substrate in an absorbent material.
Claim 16
Dependent Claim
19 words
The method of claim 14 wherein the substrate is selected from the group consisting essentially of cellulosics and masonrys.
Claim 17
Dependent Claim
12 words
The method of claim 13 wherein the substrate is a non-absorbent material.
Claim 18
Dependent Claim
19 words
The method of claim 14 wherein the substrate is selected from the group consisting essentially of fibers and fabrics.
Claim 19
Dependent Claim
19 words
The method of claim 16 wherein the substrate is selected from the group consisting essentially of fibers and fabrics.
Claim 20
Dependent Claim
20 words
The method of claim 13 wherein the organo moiety in (c) is selected to confer hydrophobic properties to the substrate.
Claim 21
Dependent Claim
23 words
The method of claim 18 wherein the organo moiety is an alkyl radical containing from 1 to 6 carbon atoms or mixtures thereof.
Claim 22
Dependent Claim
20 words
The method of claim 13 wherein the organo moiety in (c) is selected to confer hydrophilic properties to the substrate.
Claim 23
Dependent Claim
38 words
The method of claim 21 wherein the organo moiety is selected from the group consisting essentially of Cl.sup.⊖ (CH.sub.3).sub.3 N.sup.⊕ CH.sub.2 CH.sub.2 CH.sub.2 --, HO(CH.sub.2 CH.sub.2 O).sub.x CH.sub.2 CH.sub.2 CH.sub.2 --, NH.sub.2 (CH.sub.2).sub.2 NH(CH.sub.2).sub.3 --, and mixtures thereof.
Claim 24
Dependent Claim
24 words
The method of claim 13 wherein the organo moiety in (c) is selected to enhance the film-forming properties of the solutions of claim 1.
Claim 25
Dependent Claim
13 words
The method of claim 13 wherein the organo moiety contains the carbamoyl function.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |