US3755093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the anodization and resin-coating of aluminous articles
Assignee: Shinto Paint Co Ltd
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Filing: 1972-03-22
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Granted: 1973-08-28
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Expires: 1992-03-22
Abstract
Abstract A method for treating the surface of an aluminous article is provided which comprises conducting the electrolysis with the aluminous article as the anode and in a single electrolytic bath containing 1. AT LEAST ONE STRONG ACID KNOWN PER SE FOR THE ANODIZATION OF AN ALUMINOUS MATERIAL; 2. AT LEAST ONE POLYBASIC ORGANIC ACID; AND 3. AT LEAST ONE CATIONIC TYPE RESIN PREPOLYMER OR PRECONDENSATE IN AN AQUEOUS SYSTEM WHEREIN SAID CATIONIC TYPE RESIN PREPOLYMER OR PRECONDENSATE IS ANIONIZED AT LEAST PARTLY, SO THAT THE ANODIZATION AND ELECTRODEPOSITION OF THE RESIN PREPOLYMER OR PRECONDENSATE ARE EFFECTED ON THE SURFACE OF THE ALUMINOUS ARTICLE IN SAID SINGLE BATH.
Inventors
- 👤 Y Suematsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:10
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/06; C25D11/08; C25D11/10; C25D13/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
15 words
AT LEAST ONE STRONG ACID KNOWN PER SE FOR THE ANODIZATION OF AN ALUMINOUS MATERIAL;
Claim 2
Dependent Claim
15 words
AT LEAST ONE STRONG ACID KNOWN PER SE FOR THE ANODIZATION OF AN ALUMINOUS MATERIAL;
Claim 3
Dependent Claim
7 words
AT LEAST ONE POLYBASIC ORGANIC ACID; AND
Claim 4
Dependent Claim
7 words
AT LEAST ONE POLYBASIC ORGANIC ACID; AND
Claim 5
Dependent Claim
7 words
at least one polybasic organic acid; and
Claim 6
Dependent Claim
7 words
at least one polybasic organic acid; and
Claim 7
Dependent Claim
20 words
A method of claim 1 wherein said strong acid (1) is sulfuric acid, sulfaminic acid, sulfophthalic acid or sulfosalycylic acid.
Claim 8
Dependent Claim
22 words
A method of claim 2 wherein the concentration of said strong acid (1) in the electrolytic bath is at least 0.05 percent.
Claim 9
Dependent Claim
51 words
at least one cationic type resin prepolymer or precondensate in an aqueous system wherein said cationic type resin prepolyme or precondensate is anionized at least partly, whereby the anodization and electrodeposition of the resin prepolymer or precondensate are effected on the surface of the aluminous article in said single electrolytic bath.
Claim 10
Dependent Claim
51 words
at least one cationic type resin prepolymer or precondensate in an aqueous system wherein said cationic type resin prepolyme or precondensate is anionized at least partly, whereby the anodization and electrodeposition of the resin prepolymer or precondensate are effected on the surface of the aluminous article in said single electrolytic bath.
Claim 11
Dependent Claim
51 words
AT LEAST ONE CATIONIC TYPE RESIN PREPOLYMER OR PRECONDENSTATE IN AN AQUEOUS SYSTEM WHEREIN SAID CATIONIC TYPE RESIN PREPOLYMER OF PRECONDENSATE IS ANIONIZED AT LEAST PARTLY, SO THAT THE ANODIZATION AND ELECTRODEPOSITION OF THE RESIN PREPOLYMER OR PRECONDENSATE ARE EFFECTED ON THE SURFACE OF THE ALUMINOUS ARTICLE IN SAID SINGLE BATH.
Claim 12
Dependent Claim
51 words
AT LEAST ONE CATIONIC TYPE RESIN PREPOLYMER OR PRECONDENSTATE IN AN AQUEOUS SYSTEM WHEREIN SAID CATIONIC TYPE RESIN PREPOLYMER OF PRECONDENSATE IS ANIONIZED AT LEAST PARTLY, SO THAT THE ANODIZATION AND ELECTRODEPOSITION OF THE RESIN PREPOLYMER OR PRECONDENSATE ARE EFFECTED ON THE SURFACE OF THE ALUMINOUS ARTICLE IN SAID SINGLE BATH.
Claim 13
Dependent Claim
18 words
A method of claim 2 wherein the resin coating after the electrodeposition is heat-treated to cure the resin.
Claim 14
Dependent Claim
27 words
A method of claim 1 wherein said polybasic organic acid (2) is oxalic acid, tartaric acid, malonic acid, citric acid, maleic acid, phthalic acid or malic acid.
Claim 15
Dependent Claim
23 words
A method of claim 5 wherein the concentration of said polybasic organic acid (2) in the electrolytic bath is at least 0.3 percent.
Claim 16
Dependent Claim
26 words
A method of claim 1 wherein the aluminous article with the resin coating thereon is washed before the heat-treatment with an aqueous solution containing organic solvents.
Claim 17
Dependent Claim
19 words
A method of claim 7 wherein the aqueous solution further contains a small amount of at least one surfactant.
Claim 18
Dependent Claim
13 words
A method of claim 7 wherein the aqueous solution further contains an anti-oxidant.
Claim 19
Dependent Claim
27 words
A method of claim 1 wherein the concentration of said cationic type resin prepolymer or precondensate in the electrolytic bath is 1 - 40 percent by weight.
Claim 20
Dependent Claim
15 words
A method of claim 1 wherein said cationic type resin prepolymer or precondensate is thermo-setting.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |