Patent US5084356A successfully refreshed from Google Patents.
US5084356A
Expired / Lapsed
US
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Film coated with glass barrier layer with metal dopant
Assignee: EIDP Inc
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Filing: 1990-04-20
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Granted: 1992-01-28
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Expires: 2010-04-20
Abstract
Abstract A structure comprising a polymeric film substrate and a glassy coating of silicon dioxide heavily doped with at least one metal selected from the group consisting of antimony, aluminum, chromium, cobalt, copper, indium, iron, lead, manganese, tin, titanium, tungsten, zinc, and zirconium, provides improved barrier properties.
Inventors
- 👤 Gedeon I. Deak
- 👤 Scott C. Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:43
CPC Classifications
B; B32; B32B; B32B38/00; B32B37/00; B32B37/12; C; C23; C23C; C23C14/00; C23C14/06; C23C14/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31511; Y10T428/31525; Y10T428/31678; Y10T428/31681; Y10T428/31725; Y10T428/31786
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
77 words
A structure having superior barrier properties, comprising: (a) a polymeric substrate, and (b) a glassy coating of silicon dioxide doped with at least one metal selected from the group consisting of antimony, aluminum, chromium, cobalt, copper, indium, iron, lead, manganese, tin, titanium, tungsten, zinc, and zirconium, said coating and metal dopant contained therein being present in an amount suitable to provide an oxygen transmission value through the coated structure of at most about 5 mL/day-m 2 -atm.
Claim 2
Dependent Claim
77 words
A structure having superior barrier properties, comprising: (a) a polymeric substrate, and (b) a glassy coating of silicon dioxide doped with at least one metal selected from the group consisting of antimony, aluminum, chromium, cobalt, copper, indium, iron, lead, manganese, tin, titanium, tungsten, zinc, and zirconium, said coating and metal dopant contained therein being present in an amount suitable to provide an oxygen transmission value through the coated structure of at most about 5 mL/day-m 2 -atm.
Claim 3
Dependent Claim
39 words
The structure of claim 1 wherein the amount of glassy coating and the amount of metal dopant contained therein are suitable to provide an oxygen transmission value through the coated structure of at most about 1.5 mL/day-m 2 -atm.
Claim 4
Dependent Claim
32 words
The structure of claim 1 wherein the amount of metal dopant is suitable to provide an oxygen permeation value for said glassy coating of at most about 3000×10 -6 mL-mm/day-m 2 -atm.
Claim 5
Dependent Claim
32 words
The structure of claim 1 wherein the amount of metal dopant is suitable to provide an oxygen permeation value for said glassy ooating of at most about 600×10 -6 mL-mm/day-m 2 -atm.
Claim 6
Dependent Claim
32 words
The structure of claim 1 wherein the amount of metal dopant is suitable to provide an oxygen permeation value for said glassy coating of at most about 400×10 -6 mL-mm/day-m 2 -atm.
Claim 7
Dependent Claim
19 words
The structure of claim 1 wherein the thickness of the glassy coating is about 20 to about 500 nm.
Claim 8
Dependent Claim
19 words
The structure of claim 6 wherein the thickness of the glassy coating is about 50 to about 350 nm.
Claim 9
Dependent Claim
29 words
The structure of claim 1 wherein the glassy coating of silicon dioxide is doped with a metal selected from the group consisting of copper, chromium, manganese, tin, and zinc.
Claim 10
Dependent Claim
10 words
The structure of claim 8 wherein the metal is copper.
Claim 11
Dependent Claim
10 words
The structure of claim 8 wherein the metal is tin.
Claim 12
Dependent Claim
32 words
The structure of claim 1 wherein the amount of dopant metal is sufficiently low that the optical density of said glassy coating retains at least about 70% optical transmission at 550 nm.
Claim 13
Dependent Claim
27 words
The structure of claim 1 wherein the amount of dopant metal calculated as elemental metal is about 0.5 to about 30 weight percent of the glassy coating.
Claim 14
Dependent Claim
22 words
The structure of claim 9 wherein the amount of copper in the glassy coating is about 1 to about 15 weight percent.
Claim 15
Dependent Claim
22 words
The structure of claim 10 wherein the amount of tin in the glassy coating is about 3 to about 30 weight percent.
Claim 16
Dependent Claim
12 words
The structure of claim 1 wherein the polymeric substrate is a film.
Claim 17
Dependent Claim
15 words
A multiple layer structure comprising the structure of claim 15 as at least one layer.
Claim 18
Dependent Claim
26 words
The structure of claim 1 wherein the polymeric substrate has a surface smoothness such that the average height of roughness is less than about 50 nanometers.
Claim 19
Dependent Claim
26 words
The structure of claim 1 wherein the polymeric substrate has a surface smoothness such that the average height of roughness is less than about 10 nanometers.
Claim 20
Dependent Claim
13 words
The structure of claim 15 wherein the substrate film is polyester or polyamide.
Claim 21
Dependent Claim
13 words
The structure of claim 19 wherein the substrate film is oriented polyethylene terephthalate.
Claim 22
Dependent Claim
12 words
The structure of claim 1 further comprising a plastic resin protective layer.
Claim 23
Dependent Claim
45 words
A structure having superior barrier properties, comprising: (a) a polymeric substrate, and (b) a glassy coating of silicon dioxide doped with lithium borate in an amount suitable to provide an oxygen transmission value through the coated structure of at most about 5 mL/day-m 2 -atm.
Claim 24
Dependent Claim
45 words
A structure having superior barrier properties, comprising: (a) a polymeric substrate, and (b) a glassy coating of silicon dioxide doped with lithium borate in an amount suitable to provide an oxygen transmission value through the coated structure of at most about 5 mL/day-m 2 -atm.
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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) | 1995-01-27 | 1995-07-29 | 1996-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-27 | 1999-07-29 | 2000-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-27 | 2003-07-29 | 2004-01-28 | $7700.00 | Window Closed / Lapsed |