US4228221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer system
Assignee: Rexam Beverage Can Co
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Filing: 1979-04-04
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Granted: 1980-10-14
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Expires: 1999-04-04
Abstract
Abstract An ultraviolet treatment of organic titanates on metal surfaces to increase adhesion of inks and coatings is disclosed wherein the adhesion of subsequently applied inks and coatings is improved. The method includes an initial treatment of the lubricated metal substrate with an organic titanate such as tetrakis (2-ethyl hexyl) titanate and then exposing same to ultraviolet light to accelerate the reaction of the titanate with the metal surface.
Inventors
- 👤 Stanley E. Rohowetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:31
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/26; B41M1/28; B05; B05D; B05D3/00; B05D3/10; B05D5/00; B05D5/04; C; C09; C09D; C09D5/00; C09D5/002; C23; C23C; C23C22/00; C23C22/02; B05D2202/00; B05D3/06; B05D3/061; B05D3/065
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
41 words
An applied primer covering a lightly lubricated metal substrate including various metals and their oxides to form a surface for receiving a subsequently applied coating said primer consisting essentially of a thin film of organic titanate treated momentarily with ultraviolet radiation.
Claim 2
Dependent Claim
41 words
An applied primer covering a lightly lubricated metal substrate including various metals and their oxides to form a surface for receiving a subsequently applied coating said primer consisting essentially of a thin film of organic titanate treated momentarily with ultraviolet radiation.
Claim 3
Dependent Claim
31 words
The primer of claim 1 wherein the organic titanate is tetrakis(2-ethyl hexyl)titanate and the ultraviolet treatment is momentarily applied at a watt density sufficient to activate the thin film of titanate.
Claim 4
Dependent Claim
25 words
The primer of claims 1 or 2 wherein the metal substrate is electrolytic tinplate and the titanate is applied by a solution with a solvent.
Claim 5
Dependent Claim
31 words
The primer of claim 2 wherein the titanate solvent is heptane and the application of the ultraviolet light activation increases the rate of reactivity of the titanate with said metal surface.
Claim 6
Dependent Claim
15 words
The primer of claim 3 wherein said subsequently applied coating is an ultraviolet cured ink.
Claim 7
Dependent Claim
11 words
The primer of claim 1 wherein the titanate is an ester.
Claim 8
Dependent Claim
33 words
The primer of claim 6 wherein the titanate is a tetra isopropyl ester and the ultraviolet light treatment is momentarily applied at a watt density sufficient to activate the thin film of titanate.
Claim 9
Dependent Claim
33 words
The primer of claim 6 wherein the titanate is a tetra n-butyl ester and the ultraviolet light treatment is momentarily applied at a watt density sufficient to activate the thin film of titanate.
Claim 10
Dependent Claim
12 words
The primer of claim 1 wherein the titanate is a chelate type.
Claim 11
Dependent Claim
33 words
The primer of claim 9 wherein the chelate is an acetylacetonate complex which is subsequently treated momentarily with ultraviolet light applied at a watt density sufficient to activate the thin film of titanate.
Claim 12
Independent Claim
77 words
A method of priming a lightly lubricated sheet of electrolytic tinplate without removing the lubricant for preparing it to receive a post coating including the steps of: a. dipping said strip in a titanate-heptane solution sufficient to lightly coat the surface with the solution; b. permitting the solvent to evaporate leaving a titanate film over the surface, and c. momentarily exposing the surface to ultraviolet light at a watt density sufficient to photo-activate the titanate surface coating.
Claim 13
Independent Claim
77 words
A method of priming a lightly lubricated sheet of electrolytic tinplate without removing the lubricant for preparing it to receive a post coating including the steps of: a. dipping said strip in a titanate-heptane solution sufficient to lightly coat the surface with the solution; b. permitting the solvent to evaporate leaving a titanate film over the surface, and c. momentarily exposing the surface to ultraviolet light at a watt density sufficient to photo-activate the titanate surface coating.
Claim 14
Dependent Claim
19 words
The method of claim 11 wherein the titanate concentration by weight represents 0.5 to 5.0% part of said solution.
Claim 15
Independent Claim
25 words
The method of claims 11 or 12 wherein the titanate is tetrakis(2-ethyl hexyl) and is at a concentration of 2% by weight in said solution.
Claim 16
Independent Claim
88 words
A method for applying a titanate primer to lightly lubricated tinplate without removing the lubricant for preparing it to receive a subsequent applied coating including the steps of: a. charging the primer with an electrostatic charge while atomizing same for dispersion; b. charging the tinplate with an electrostatic charge of opposite polarity to that impressed upon the primer; c. dispersing the charged and atomized primer toward the tinplate to coat same, and d. subjecting the coated tinplate to a brief exposure of ultraviolet radiation to photo-activate the surface.
Claim 17
Independent Claim
88 words
A method for applying a titanate primer to lightly lubricated tinplate without removing the lubricant for preparing it to receive a subsequent applied coating including the steps of: a. charging the primer with an electrostatic charge while atomizing same for dispersion; b. charging the tinplate with an electrostatic charge of opposite polarity to that impressed upon the primer; c. dispersing the charged and atomized primer toward the tinplate to coat same, and d. subjecting the coated tinplate to a brief exposure of ultraviolet radiation to photo-activate the surface.
Claim 18
Dependent Claim
12 words
The method of claim 14 wherein said titanate primer includes a lubricant.
Claim 19
Independent Claim
84 words
A method for applying a primer including a titanate and a ester-type lubricant to tinplate for preparing it to receive a subsequently applied coating including the steps of: a. charging the primer with an electrostatic charge while atomizing same for dispersion; b. charging the primer with an electrostatic charge while atomizing same for dispersion; c. dispersing the charged and atomized primer toward the tinplate to coat same, and d. subjecting the coated tinplate to a brief exposure of ultraviolet radiation to photo-activate the surface.
Claim 20
Independent Claim
84 words
A method for applying a primer including a titanate and a ester-type lubricant to tinplate for preparing it to receive a subsequently applied coating including the steps of: a. charging the primer with an electrostatic charge while atomizing same for dispersion; b. charging the primer with an electrostatic charge while atomizing same for dispersion; c. dispersing the charged and atomized primer toward the tinplate to coat same, and d. subjecting the coated tinplate to a brief exposure of ultraviolet radiation to photo-activate the surface.
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) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |