US4351883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions for treating aluminum surfaces for tarnish resistance
Assignee: Ball Corp
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Filing: 1981-02-23
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Granted: 1982-09-28
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Expires: 2001-02-23
Abstract
Abstract The subject invention relates to compositions of matter for treating aluminum surfaces for rendering them tarnish and corrosive resistant. The compositions comprise an alkali metal silicate including sodium and potassium and lithium silicates and a soluble organic polymer having displaceable hydrogens or displaced hydrogens. The organic polymers having displaceable hydrogens may be derived from hydroxyls, carboxylic acids, amides, sulfonic acids, carbohydrates, and phosphoric acids. The composition may be readily applied by spraying or dipping them in concentration less than about 5% in an aqueous system.
Inventors
- 👤 Arnold F. Marcantonio
- 👤 Paul J. Kress
- 👤 John W. Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:27
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/60; C23C22/66
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
93 words
A method of treating an aluminum surface to impart tarnish resistance thereto by the steps of contacting said surface with a solution comprising about 0.01 to about 10 weight percent of a water-soluble portion containing about 10 to about 95 weight percent of an alkali metal silicate and about 5 to about 90 weight percent of an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether), and poly(styrene sulfonic acid), and about 90 to about 99.99 weight percent water and thereafter washing away said solution.
Claim 2
Independent Claim
93 words
A method of treating an aluminum surface to impart tarnish resistance thereto by the steps of contacting said surface with a solution comprising about 0.01 to about 10 weight percent of a water-soluble portion containing about 10 to about 95 weight percent of an alkali metal silicate and about 5 to about 90 weight percent of an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether), and poly(styrene sulfonic acid), and about 90 to about 99.99 weight percent water and thereafter washing away said solution.
Claim 3
Independent Claim
107 words
A method of treating an aluminum surface to impart tarnish resistance thereto by the steps of contacting for at least 10 seconds at a temperature of at least about 40° C., said aluminum surface with a composition comprising about 0.01 to about 10 weight percent of a water-soluble portion containing about 10 to about 95 weight percent of an alkali metal silicate and about 5 to about 90 weight percent of an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether) and poly(styrene sulfonic acid), and about 90 to 99.99 weight percent water, and thereafter rinsing said aluminum surface.
Claim 4
Independent Claim
107 words
A method of treating an aluminum surface to impart tarnish resistance thereto by the steps of contacting for at least 10 seconds at a temperature of at least about 40° C., said aluminum surface with a composition comprising about 0.01 to about 10 weight percent of a water-soluble portion containing about 10 to about 95 weight percent of an alkali metal silicate and about 5 to about 90 weight percent of an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether) and poly(styrene sulfonic acid), and about 90 to 99.99 weight percent water, and thereafter rinsing said aluminum surface.
Claim 5
Dependent Claim
31 words
A method as recited in claim 2 wherein the composition comprises about 0.01 to about 5 weight percent of the water-soluble portion and about 95 to about 99.99 weight percent water.
Claim 6
Dependent Claim
42 words
A method as recited in claim 2 wherein the alkali metal silicate is present in an amount between about 60 and about 70 weight percent and the organic polymer is present in an amount between about 30 to about 40 weight percent.
Claim 7
Dependent Claim
20 words
A method as recited in claim 2 wherein the aluminum surface is contacted with the composition for about one minute.
Claim 8
Dependent Claim
24 words
A method as recited in claim 2 wherein the aluminum surface is exposed to the composition at a temperature greater than about 60° C.
Claim 9
Dependent Claim
39 words
An aluminum surface having a coating thereon consisting essentially of an alkali metal silicate and an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), acacia gum, poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether), and poly(styrene sulfonic acid).
Claim 10
Dependent Claim
39 words
An aluminum surface having a coating thereon consisting essentially of an alkali metal silicate and an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), acacia gum, poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether), and poly(styrene sulfonic acid).
Claim 11
Dependent Claim
25 words
An aluminum surface of claim 7 wherein said alkali metal silicate is selected from the group consisting of sodium silicate, potassium silicate and lithium silicate.
Claim 12
Dependent Claim
86 words
A tarnish resistant aluminum surface treated by the process of contacting for at least 10 seconds at a temperature of at least about 40° C., said surface with a solution comprising about 0.01 to about 10 weight percent of a water-soluble portion containing about 10 to about 95 weight percent of an alkali metal silicate and about 5 to about 90 weight percent of an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether), and poly(styrene sulfonic acid).
Claim 13
Dependent Claim
86 words
A tarnish resistant aluminum surface treated by the process of contacting for at least 10 seconds at a temperature of at least about 40° C., said surface with a solution comprising about 0.01 to about 10 weight percent of a water-soluble portion containing about 10 to about 95 weight percent of an alkali metal silicate and about 5 to about 90 weight percent of an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether), and poly(styrene sulfonic acid).
Claim 14
Independent Claim
97 words
A method of treating an aluminum surface to impart tarnish resistance thereto by the steps of contacting said surface with a solution consisting essentially of about 0.01 to about 10 weight percent of a water-soluble portion containing about 10 to about 95 weight percent of an alkali metal silicate and about 5 to about 90 weight percent of an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), acacia gum, poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether), and poly(styrene sulfonic acid), and about 90 to about 99.99 weight percent water and thereafter washing away said solution.
Claim 15
Independent Claim
97 words
A method of treating an aluminum surface to impart tarnish resistance thereto by the steps of contacting said surface with a solution consisting essentially of about 0.01 to about 10 weight percent of a water-soluble portion containing about 10 to about 95 weight percent of an alkali metal silicate and about 5 to about 90 weight percent of an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), acacia gum, poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether), and poly(styrene sulfonic acid), and about 90 to about 99.99 weight percent water and thereafter washing away said solution.
Claim 16
Independent Claim
111 words
A method of treating an aluminum surface to impart tarnish resistance thereto by the steps of contacting for at least 10 seconds at a temperature of at least about 40° C., said aluminum surface with a composition consisting essentially of about 0.01 to about 10 weight percent of a water-soluble portion containing about 10 to about 95 weight percent of an alkali metal silicate and about 5 to about 90 weight percent of an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), acacia gum, poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether) and poly(styrene sulfonic acid), and about 90 to 99.99 weight percent water, and thereafter rinsing said aluminum surface.
Claim 17
Independent Claim
111 words
A method of treating an aluminum surface to impart tarnish resistance thereto by the steps of contacting for at least 10 seconds at a temperature of at least about 40° C., said aluminum surface with a composition consisting essentially of about 0.01 to about 10 weight percent of a water-soluble portion containing about 10 to about 95 weight percent of an alkali metal silicate and about 5 to about 90 weight percent of an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), acacia gum, poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether) and poly(styrene sulfonic acid), and about 90 to 99.99 weight percent water, and thereafter rinsing said aluminum surface.
Claim 18
Dependent Claim
31 words
A method as recited in claim 11 wherein the composition comprises about 0.01 to about 5 weight percent of the water-soluble portion and about 95 to about 99.99 weight percent water.
Claim 19
Dependent Claim
42 words
A method as recited in claim 11 wherein the alkali metal silicate is present in an amount between about 60 and about 70 weight percent and the organic polymer is present in an amount between about 30 to about 40 weight percent.
Claim 20
Dependent Claim
20 words
A method as recited in claim 11 wherein the aluminum surface is contacted with the composition for about one minute.
Claim 21
Dependent Claim
24 words
A method as recited in claim 11 wherein the aluminum surface is exposed to the composition at a temperature greater than about 60° C.
Claim 22
Dependent Claim
90 words
A tarnish resistant aluminum surface treated by the process of contacting for at least 10 seconds at a temperature of at least about 40° C., said surface with a solution consisting essentially of about 0.01 to about 10 weight percent of a water-soluble portion containing about 10 to about 95 weight percent of an alkali metal silicate and about 5 to about 90 weight percent of an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), acacia gum, poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether), and poly(styrene sulfonic acid).
Claim 23
Dependent Claim
90 words
A tarnish resistant aluminum surface treated by the process of contacting for at least 10 seconds at a temperature of at least about 40° C., said surface with a solution consisting essentially of about 0.01 to about 10 weight percent of a water-soluble portion containing about 10 to about 95 weight percent of an alkali metal silicate and about 5 to about 90 weight percent of an organic polymer selected from the group consisting of poly(acrylic-co-acrylate), poly(vinyl alcohol), poly(acrylic acid), acacia gum, poly(acrylamide), poly(maleic anhydride-co-methylvinyl ether), and poly(styrene sulfonic acid).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |