US3956091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electrodepositing
Assignee: PPG Industries Inc
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Filing: 1974-05-16
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Granted: 1976-05-11
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Expires: 1994-05-16
Abstract
Abstract Water-dispersed coating compositions which can be applied by electrodeposition contain an at least partially-neutralized acrylic interpolymer, an amine-aldehyde condensation product, and a methylol phenol ether composition of the formula: ##SPC1## Where n is an integer of from 1 to 3, and R is an unsaturated aliphatic group or a halogenated derivative of such a group. These compositions are easily and efficiently applied by electrodeposition to metal containers to provide uniform, hard, adherent coatings characterized by reduced sulfide staining when compared to compositions without the methylol phenol ether.
Inventors
- 👤 Owen D. Stepp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:21
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4407; C09D5/4411; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
118 words
In a method of electrocoating an electrically-conductive surface of a metal container which is used with food products which cause or contribute to sulfide staining, said surface of the metal container serving as an anode which comprises passing electric current between said anode and a cathode in contact with an aqueous electrodepositable composition, the improvement wherein said electrodepositable composition comprises an aqueous dispersion of: A. an at least partially-neutralized acrylic interpolymer; B. an amine-aldehyde condensation product; and C. a methylol phenol ether composition consisting essentially of one or more methylol phenol ethers of the formula: ##SPC3## where n is an integer from 1 to 3 and R is an unsaturated aliphatic group or a halogen-substituted unsaturated aliphatic group.
Claim 2
Dependent Claim
118 words
In a method of electrocoating an electrically-conductive surface of a metal container which is used with food products which cause or contribute to sulfide staining, said surface of the metal container serving as an anode which comprises passing electric current between said anode and a cathode in contact with an aqueous electrodepositable composition, the improvement wherein said electrodepositable composition comprises an aqueous dispersion of: A. an at least partially-neutralized acrylic interpolymer; B. an amine-aldehyde condensation product; and C. a methylol phenol ether composition consisting essentially of one or more methylol phenol ethers of the formula: ##SPC3## where n is an integer from 1 to 3 and R is an unsaturated aliphatic group or a halogen-substituted unsaturated aliphatic group.
Claim 3
Dependent Claim
60 words
The method of claim 1, wherein said acrylic interpolymer is an at least partially-neutralized interpolymer of from about one percent to about 20 percent by weight of a hydroxyalkyl ester of an alpha, beta-ethylenically unsaturated carboxylic acid, from about one percent to about 20 percent by weight of an unsaturated carboxylic acid, and at least one other copolymerizable ethylenically-unsaturated monomer.
Claim 4
Dependent Claim
59 words
The method of claim 2, wherein the vehicle of said aqueous dispersion comprises: A. from about 50 to about 94 percent by weight of said acrylic interpolymer; B. from about 5 to about 49 percent by weight of said amine-aldehyde condensation product; and C. from about one to about 45 percent by weight of said methylol phenol ether composition.
Claim 5
Dependent Claim
59 words
The method of claim 3, wherein the vehicle of said aqueous dispersion comprises: A. from about 50 to about 90 percent by weight of said acrylic interpolymer; B. from about 5 to about 45 percent by weight of said amine-aldehyde condensation product; and C. from about 5 to about 20 percent by weight of said methylol phenol ether composition.
Claim 6
Dependent Claim
17 words
The method of claim 3, wherein the trimethylolated derivative is predominant in said methylol phenol ether composition.
Claim 7
Dependent Claim
59 words
The method of claim 1, wherein the vehicle of said aqueous dispersion comprises: A. from about 50 to about 94 percent by weight of said acrylic interpolymer; B. from about 5 to about 49 percent by weight of said amine-aldehyde condensation product; and C. from about one to about 45 percent by weight of said methylol phenol ether composition.
Claim 8
Dependent Claim
59 words
The method of claim 6, wherein the vehicle of said aqueous dispersion comprises: A. from about 50 to about 90 percent by weight of said acrylic interpolymer; B. from about 5 to about 45 percent by weight of said amine-aldehyde condensation product; and C. from about 5 to about 20 percent by weight of said methylol phenol ether composition.
Claim 9
Dependent Claim
17 words
The method of claim 6, wherein the trimethylolated derivative is predominant in said methylol phenol ether composition.
Claim 10
Dependent Claim
25 words
The method of claim 1, wherein said methylol phenol ether composition consists essentially of a mixture of allyl ethers of mono-, di- and trimethylol phenol.
Claim 11
Dependent Claim
9 words
An article produced by the method of claim 1.
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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |