Patent US4640865A successfully refreshed from Google Patents.
US4640865A
Expired / Lapsed
US
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Barrier film structures
Assignee: Dow Chemical Co
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Filing: 1985-05-28
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Granted: 1987-02-03
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Expires: 2005-05-28
Abstract
Abstract Articles useful as RF-sealable packaging materials comprise a halopolymer barrier layer coated onto, or adhered to, a carbon monoxide-containing polymer, wherein the carbon monoxide-containing polymer provides RF-sealability to the structure. Other layers of materials may be employed as part of the packaging material.
Inventors
- 👤 Gerald M. Lancaster
- 👤 David C. Kelley
- 👤 Russell H. Cramm
- 👤 Charles V. Neywick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:22
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/18; B32B38/00; B32B38/0008; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/048; B32B2307/00; B32B2307/20; B32B2307/206; B32B2310/00; B32B2310/08; B32B2310/0806; B32B2310/0862; B32B2310/14; B32B2553/00; C08J2423/00; C08J2427/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31909; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
41 words
An article comprising a carbon monoxide-containing polymer having coated thereon, as an adhering layer, a halopolymer, wherein said halopolymer layer is one which has been applied to the carbon monoxide-containing polymer as a fine particle aqueous dispersion or latex and dried.
Claim 2
Dependent Claim
41 words
An article comprising a carbon monoxide-containing polymer having coated thereon, as an adhering layer, a halopolymer, wherein said halopolymer layer is one which has been applied to the carbon monoxide-containing polymer as a fine particle aqueous dispersion or latex and dried.
Claim 3
Dependent Claim
24 words
The article of claim 1 wherein the carbon monoxide-containing polymer comprises at least one selected from the group comprising E/CO, E/CO/VA, E/CO/MAA, and E/CO/AA.
Claim 4
Dependent Claim
26 words
The article of claim 1 wherein the halopolymer comprises at least one selected from the group comprising polyvinylhalide, polyvinylidene halide, poly(vinylidene halide)(vinyl halide), and halogenated polyolefins.
Claim 5
Dependent Claim
16 words
The article of claim 1 wherein the halopolymer comprises a chloropolymer, a fluoropolymer, or a chlorofluoropolymer.
Claim 6
Dependent Claim
22 words
The article of claim 1 wherein the carbon monoxide comprises about 1 to about 50% by weight of the carbon monoxide-containing polymer.
Claim 7
Dependent Claim
22 words
The article of claim 1 wherein the carbon monoxide comprises about 1 to about 40% by weight of the carbon monoxide-containing polymer.
Claim 8
Dependent Claim
22 words
The article of claim 1 wherein the carbon monoxide comprises about 5 to about 30% by weight of the carbon monoxide-containing polymer.
Claim 9
Dependent Claim
55 words
The article of claim 1 wherein the carbon monoxide-containing polymer is a film having the halopolymer coated or adhered to one side thereof, and having adhered to the other side thereof at least one material or substrate selected from the group comprising resin, paper, cloth, wood, print, adhesive, metal, ceramic, plastic, and another similar polymer.
Claim 10
Dependent Claim
28 words
The article of claim 1 wherein the fine particle aqueous dispersion or latex is one which has a solids content in the range of about 10-90% by weight.
Claim 11
Dependent Claim
28 words
The article of claim 1 wherein the fine particle aqueous dispersion or latex is one which has a solids content in the range of about 30-75% by weight.
Claim 12
Dependent Claim
27 words
The article of claim 1 wherein the fine particle aqueous dispersion of latex is one which has a surface tension in the range of about 30-90 dynes/cm.
Claim 13
Dependent Claim
27 words
The article of claim 1 wherein the fine particle aqueous dispersion or latex is one which has a surface tension in the range of about 40-80 dynes/cm.
Claim 14
Dependent Claim
30 words
The article of claim 1 wherein the surface of the carbon monoxide-containing polymer has been corona-treated prior to the application of the fine particle aqueous dispersion or latex of halopolymer.
Claim 15
Dependent Claim
12 words
The article of claim 3 wherein the halogenated polyolefin comprises halogenated polyethylene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |