US4362783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer coatings and methods of applying same
Assignee: AT&T Inc
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Filing: 1980-08-26
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Granted: 1982-12-07
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Expires: 2000-08-26
Abstract
Abstract Polymeric coatings can be applied to substrates such as metal foils by first coating the foil with a wetting hydrosol followed by applying a coupling agent thereto and thereafter coating the substrate with the desired polymer.
Inventors
- 👤 Lionell Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:20
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/05; H05K1/056; H05K3/00; H05K3/38; H05K3/389; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/268; Y10T428/31504; Y10T428/31511; Y10T428/31536; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663; Y10T428/31678; Y10T428/31826
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
59 words
In combination, a substrate and a polymer adhesion enhancing layer thereon comprises the substrate, a wetting hydrosol having a cationic constituent on at least one surface of the substrate and adherent thereto and a coupling agent on the hydrosol and adherent thereto, the cationic constituent of the wetting hydrosol being dissimilar to any metallic constituent of the underlying substrate.
Claim 2
Dependent Claim
59 words
In combination, a substrate and a polymer adhesion enhancing layer thereon comprises the substrate, a wetting hydrosol having a cationic constituent on at least one surface of the substrate and adherent thereto and a coupling agent on the hydrosol and adherent thereto, the cationic constituent of the wetting hydrosol being dissimilar to any metallic constituent of the underlying substrate.
Claim 3
Dependent Claim
16 words
The combination recited in claim 1, wherein the substrate is a metal or a metal alloy.
Claim 4
Dependent Claim
23 words
The combination recited in claim 2, wherein the substrate is a metal selected from the group consisting of aluminum, steel or tinned steel.
Claim 5
Dependent Claim
18 words
The combination recited in claim 1, wherein the wetting hydrosol is a hydrosol of a hydrous metal oxide.
Claim 6
Dependent Claim
14 words
The combination recited in claim 1, wherein the wetting hydrosol is a tin hydrosol.
Claim 7
Dependent Claim
26 words
The combination recited in claim 1, wherein the coupling agent is selected from the group consisting of organo silanes, Werner complexes, organo-metallic compounds and polar surfactants.
Claim 8
Dependent Claim
13 words
The combination recited in claim 6, wherein the coupling agent is an organo-silane.
Claim 9
Dependent Claim
15 words
The combination recited in claim 1, including an adherent polymeric layer over the coupling agent.
Claim 10
Dependent Claim
18 words
The combination recited in claim 1, wherein the hydrosol is present in a thickness of about one monolayer.
Claim 11
Dependent Claim
18 words
The combination recited in claim 8, wherein the coupling agent contains moieties similar to the polymeric layer thereover.
Claim 12
Dependent Claim
33 words
A coated metal comprising a base metal, a monolayer of a hydrous oxide wetting hydrosol thereon having a cationic constituent different from the base metal, and a compatible coupling agent over the hydrosol.
Claim 13
Dependent Claim
33 words
A coated metal comprising a base metal, a monolayer of a hydrous oxide wetting hydrosol thereon having a cationic constituent different from the base metal, and a compatible coupling agent over the hydrosol.
Claim 14
Dependent Claim
21 words
The coated metal recited in claim 1, wherein the base metal is a flexible tape of steel, aluminum or tinned steel.
Claim 15
Dependent Claim
45 words
A printed circuit board comprises a base metal, a hydrous oxide wetting hydrosol on at least one surface of the base metal, the hydrosol having a cationic constituent which is different from the base metal, a coupling agent therefor and a compatible polymeric coating thereover.
Claim 16
Dependent Claim
45 words
A printed circuit board comprises a base metal, a hydrous oxide wetting hydrosol on at least one surface of the base metal, the hydrosol having a cationic constituent which is different from the base metal, a coupling agent therefor and a compatible polymeric coating thereover.
Claim 17
Dependent Claim
37 words
The printed circuit board recited in claim 13, wherein the base metal is pre-drilled to provide through-holes and wherein the metal is coated on both sides and in the through-holes with the hydrosol, coupling agent and polymer.
Claim 18
Dependent Claim
37 words
The printed circuit board recited in claim 13, wherein the base metal is steel, the hydrosol is a hydrous tin oxide, the coupling agent is an amino-silane and the polymer coating is a rubber modified epoxy coating.
Claim 19
Dependent Claim
22 words
The printed circuit board recited in claims 14 or 15, including an electrolessly deposited metallic pattern on at least one surface thereof.
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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) | 1985-12-06 | 1986-06-07 | 1986-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-06 | 1990-06-07 | 1990-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-06 | 1994-06-07 | 1994-12-07 | $7700.00 | Window Closed / Lapsed |