Patent US3916048A successfully refreshed from Google Patents.
US3916048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barrier plastic articles
Assignee: Dow Chemical Co
•
Filing: 1973-05-21
•
Granted: 1975-10-28
•
Expires: 1993-05-21
Abstract
Abstract A plastic article is rendered essentially impermeable to atmospheric gases and other vapors by metallizing the wall structure of the plastic article with a metal to form a thin metal layer and overcoating the metal layer with a latex of an organic polymer, particularly a barrier polymer such as a vinylidene chloride polymer, to provide alayer of the organic polymer adherent to the metal layer.
Inventors
- 👤 Wilhelm E Walles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:43
CPC Classifications
B; B32; B32B; B32B1/00; A; A47; A47J; A47J41/00; A47J41/02; A47J41/022; B32B15/00; B32B15/04; B32B15/08; B32B15/082; B32B15/085; B32B15/088; B32B15/09; B32B15/098; B32B15/20; B32B27/00; B32B27/28; B32B27/285; B32B27/30; B32B27/306; B32B27/32; B32B27/34; B32B27/36; B32B27/42; B65; B65D; B65D11/00; B65D11/16; B65D81/00; B65D81/38; B65D81/3837; B65D81/3846; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/78; E04B1/80; F; F17; F17C; F17C3/00; F17C3/02; F17C3/08; B32B2311/00; B32B2311/02; B32B2311/04; B32B2311/08; B32B2311/12; B32B2311/14; B32B2311/16; B32B2311/18; B32B2311/22; B32B2311/24; B32B2323/00; B32B2361/00; B32B2367/00; B32B2369/00; B32B2371/00; B32B2377/00; B32B2439/00; B32B2439/40; B32B2439/60; C; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1633; C23C18/1646; C25; C25D; C25D5/00; C25D5/54; C25D5/56; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2203/00; F17C2203/03; F17C2203/0391; F17C2203/0395; F17C2203/06; F17C2203/0602; F17C2203/0607; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2203/0634; F17C2203/0636; F17C2203/0658; F17C2203/066; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0311; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1355; Y10T428/1359; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
75 words
A BARRIER PLASTIC CONTAINING COMPRISING A NORMALLY SOLID, ORGANIC PLASTIC SUBSTRATE WHICH HAS A WATER WETTEBLE SURFACE AND HAS DEPOSITED THEREON AND ADHERENT THERETO A METAL LAYER WHICH IS OVERCOATED WITH A LAYER OR ORGANIC COPOLYNER WHICH ADHERES TO THE METAL LAYER, SAID ORGANIC POLYMER HAVING BEEN APPLIED TO THE METAL LAYER IN THE FARM OF A LATEX CAPBLE OF FORMING A CONTINUOUS FILM AT TEMPERATURES BELOW THE HEAT DISTORTION POINT OF THE PLASTIC SUBSTRATE.
Claim 2
Dependent Claim
75 words
A BARRIER PLASTIC CONTAINING COMPRISING A NORMALLY SOLID, ORGANIC PLASTIC SUBSTRATE WHICH HAS A WATER WETTEBLE SURFACE AND HAS DEPOSITED THEREON AND ADHERENT THERETO A METAL LAYER WHICH IS OVERCOATED WITH A LAYER OR ORGANIC COPOLYNER WHICH ADHERES TO THE METAL LAYER, SAID ORGANIC POLYMER HAVING BEEN APPLIED TO THE METAL LAYER IN THE FARM OF A LATEX CAPBLE OF FORMING A CONTINUOUS FILM AT TEMPERATURES BELOW THE HEAT DISTORTION POINT OF THE PLASTIC SUBSTRATE.
Claim 3
Dependent Claim
13 words
The container of claim 1 which is in the form of a bottle.
Claim 4
Dependent Claim
66 words
The container of claim 2 wherein the plastic substrate is a polymer selected from the group consisting of an Alpha -monoolefin having less than 12 cArbon atoms; monovinylidene carbocyclic aromatic polymers; polymers of alkyl ester of Alpha , Beta -ethylenically unsaturated carboxylic acids; structural polymers of vinyl and vinylidene halides, acrylonitrile, acrylamide, methyl vinyl ether, vinyl acetate, and dienes; polyformaldehyde resins; polyesters; polycarbonates; polysulfones; and polyamides.
Claim 5
Dependent Claim
25 words
The container of claim 3 wherein a metal is silver, lead, nickel, aluminum, copper, gold, titanium, tin, bismuth, antimony, chromium, or manganese including alloys thereof.
Claim 6
Dependent Claim
96 words
The container of claim 4 wherein the organic polymer for overcoating the metal layer is suitably a normally solid organic polymer which, in latex form, will form a continuous film at temperatures below the heat distortion point of the organic plastic substrate, said organic polymer is selected from the group consisting of Alpha -monoolefins having less than 12 carbon atoms; monovinylidene aromatic carbocyclic monomers; conjugated aliphatic dienes; alkyl esters of Alpha , Beta -ethylenically unsaturated carboxylic acids; unsaturated esters of carboxylic acids; vinyl and vinylidene halides; acrylonitrile; methacrylonitrile; acrylamide; methyl vinyl ether; and methyl benzyl ketone.
Claim 7
Dependent Claim
53 words
The container of claim 1 wherein the substrate has a thickness in the range from about 0.5 to about 300 mils, the methyl layer has a thickness in the range from about 0.0001 to about 0.1 mil and the layer of organic polymer has a thickness from about 0.001 to about 2.5 mils.
Claim 8
Dependent Claim
45 words
The container of claim 6 wherein the metal layer is applied to the substrate by an electroless metal deposition technique in which the water wettable surface of the plastic substrate is first coated with a dilute aqueous solution of a tin compound and subsequently metallized.
Claim 9
Dependent Claim
10 words
The container of claim 7 wherein the metal is silver.
Claim 10
Dependent Claim
14 words
The container of claim 8 wherein the organic polymer is a vinylidene chloride polymer.
Claim 11
Dependent Claim
13 words
The container of claim 8 wherein the organic polymer is a styrene/butadiene copolymer.
References Cited (Backward Citations)
US2680695A
Cited
US2923651A
Cited
US3480464A
Cited
US3471313A
Cited
US3625751A
Cited
US3617368A
Cited
US3783005A
Cited
US3828960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |