US3776782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester and polyamide adhesion improvers
Assignee: Veolia WTS USA Inc
•
Filing: 1971-03-15
•
Granted: 1973-12-04
•
Expires: 1991-03-15
Abstract
Abstract Prior to applying an alkyd paint to a metallic surface or to a pre-paint coating covering a metallic surface, there is applied to said surface or said coating a polyester or a polyamide for the purpose of improving the adhesion of said paint. The polyester or polyamide can be applied from an aqueous rinse solution or from a final rinse solution.
Inventors
- 👤 T Kiefer
- 👤 M Nagatani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:29
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; C; C09; C09D; C09D167/00; C09D167/08; C09D177/00; C09D5/00; C09D5/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
17 words
The method according to claim 1 wherein starch phosphate is applied to said wet pre-paint conversion coating.
Claim 2
Dependent Claim
24 words
The method according to claim 1 wherein said wet pre-paint conversion coating is rinsed with an aqueous solution containing said polyester or said polyamide.
Claim 3
Dependent Claim
15 words
The method according to claim 3 wherein said aqueous solution is a final rinse solution.
Claim 4
Independent Claim
142 words
A method for coating a metallic surface comprising: A applying to a metallic surface a pre-paint coating-forming solution which forms on said surface a prepaint conversion coating; B applying to said pre-paint conversion coating while wet a water soluble or colloidally dispersible polyester or polyamide adhesion improver, wherein said adhesion improver is applied from a water rinse which is applied to said pre-paint conversion coating to remove therefrom excess or spent pre-paint coating solution or from a final rinse solution after said pre-paint conversion coating has been water rinsed to remove therefrom excess or spent pre-paint coating solution; and C thereafter applying an alkyd paint to the pre-paint conversion coating having thereon said adhesion improver; wherein the amount of adhesion improver applied is sufficient to improve the bond between the paint film formed from said alkyd paint and said pre-paint conversion coating.
Claim 5
Dependent Claim
34 words
The method according to claim 5 wherein said adhesion improver is starch phosphate and wherein it is applied to said pre-paint conversion coating by rinsing it with an aqueous solution containing said starch phosphate.
Claim 6
Independent Claim
78 words
A method for coating a metallic surface comprising: A applying a pre-paint conversion coating to said metallic surface; B applying an aqueous solution containing starch phosphate to said pre-paint conversion coating; and C applying an alkyd paint to said pre-paint conversion coating having thereon starch phosphate; wherein the amount of starch phosphate on said pre-paint conversion coating is at least sufficient to improve the bond between said conversion coating and the paint film formed from said alkyd paint.
Claim 7
Dependent Claim
16 words
A method according to claim 7 wherein said pre-paint conversion coating is a zinc phosphate coating.
Claim 8
Dependent Claim
11 words
A metallic surface coated according to the method of claim 1.
Claim 9
Dependent Claim
11 words
A metallic surface coated according to the method of claim 5.
Claim 10
Dependent Claim
11 words
A metallic surface coated according to the method of claim 7.
References Cited (Backward Citations)
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US2887405A
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US3164488A
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US3625777A
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US3519495A
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US3565699A
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US3573997A
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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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |