US4600614A
Expired / Lapsed
US
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High-frequency heatable plastics
Assignee: Dow Chemical Co
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Filing: 1983-09-12
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Granted: 1986-07-15
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Expires: 2003-09-12
Abstract
Abstract Olefin polymers which are unsuited, or ill-suited, for heating, sealing, or bonding by the action of high-frequency electromagnetic radiation, especially microwave radiation, are rendered heatable by such radiation by incorporating carbon monoxide, as a comonomer, into the polymer structure.
Inventors
- 👤 Gerald M. Lancaster
- 👤 James A. Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:07
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; B29; B29C; B29C65/00; B29C65/02; B29C65/14; B29C65/1403; B29C65/1425; B29C65/04; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B32B27/00; B32B27/04; B32B27/06; B32B27/32; C; C08; C08G; C08G67/00; C08G67/02; C08J; C08J5/00; C08J5/12; C08J5/124; C09; C09J; C09J173/00; B29C66/71; B29C66/737; B29C66/7375; B29C66/73755; B29C66/73921; B29C66/7394; B29K; B29K2023/00; B29K2023/04; B29K2023/08; B29K2023/083; B29L; B29L2031/00; B29L2031/712; B29L2031/7128; B29L2031/7162; B32B2435/00; B32B2435/02; B32B2439/00; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1345; Y10T428/1352; Y10T428/1397; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31678; Y10T428/31692; Y10T428/31855; Y10T428/3188; Y10T428/31895
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
71 words
A high-frequency electromagnetic radiation sealable multi-ply article comprising two (a) plies in sealable contact with each other, with their reverse surfaces in sealable contact with (b) plies, wherein each (a) ply comprises an olefin/carbon monoxide interpolymer in which about 0.1% to about 50% of the interpolymer weight is atrributable to carbon monoxide, and each (b) ply comprises a material which is unsuited or ill-suited as a high-frequency electromagnetic radiation sealable material.
Claim 2
Dependent Claim
71 words
A high-frequency electromagnetic radiation sealable multi-ply article comprising two (a) plies in sealable contact with each other, with their reverse surfaces in sealable contact with (b) plies, wherein each (a) ply comprises an olefin/carbon monoxide interpolymer in which about 0.1% to about 50% of the interpolymer weight is atrributable to carbon monoxide, and each (b) ply comprises a material which is unsuited or ill-suited as a high-frequency electromagnetic radiation sealable material.
Claim 3
Dependent Claim
25 words
The multi-ply article of claim 1 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with about 1% to about 40% by weight of carbon monoxide.
Claim 4
Dependent Claim
25 words
The multi-ply article of claim 1 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with about 5% to about 30% by weight of carbon monoxide.
Claim 5
Dependent Claim
46 words
The multi-ply article of claim 1 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with carbon monoxide and at least one other comonomer selected from the group consisting of olefinically unsaturated organic acids, the alkyl esters of such acids, and the metal salts of such acids.
Claim 6
Dependent Claim
20 words
The multi-ply article of claim 1 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with carbon monoxide and acrylic acid.
Claim 7
Dependent Claim
20 words
The multi-ply article of claim 1 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with carbon monoxide and methacrylic acid.
Claim 8
Dependent Claim
20 words
The multi-ply article of claim 1 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with carbon monoxide and vinyl acetate.
Claim 9
Dependent Claim
28 words
The multi-ply article of claim 1 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with carbon monoxide and an alkali metal salt of acrylic acid or methacrylic acid.
Claim 10
Dependent Claim
27 words
The multi-ply article of claim 1 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with carbon monoxide and an alkyl ester of an olefinically unsaturated organic acid.
Claim 11
Dependent Claim
27 words
The multi-ply article of claim 1 wherein the olefin/carbon monoxide interpolymer comprises an ethylene/carbon monoxide interpolymer wherein the carbon monoxide groups in the polymer chain are hydrogenated.
Claim 12
Dependent Claim
96 words
A high-frequency electromagnetic radiation sealable multi-ply article comprising an (a) ply between a first (b) ply and a second (b) ply, wherein the first (b) ply is a lid or cap of a container and the second (b) ply is a container which is to be closed by the first (b) ply, wherein the (a) ply comprises an olefin/carbon monoxide interpolymer in which about 0.1% to about 50% of the interpolymer weight is attributable to carbon monoxide, and each (b) ply comprises a material which is unsuited or ill-suited as a high-frequency electromagnetic radiation sealable material.
Claim 13
Dependent Claim
96 words
A high-frequency electromagnetic radiation sealable multi-ply article comprising an (a) ply between a first (b) ply and a second (b) ply, wherein the first (b) ply is a lid or cap of a container and the second (b) ply is a container which is to be closed by the first (b) ply, wherein the (a) ply comprises an olefin/carbon monoxide interpolymer in which about 0.1% to about 50% of the interpolymer weight is attributable to carbon monoxide, and each (b) ply comprises a material which is unsuited or ill-suited as a high-frequency electromagnetic radiation sealable material.
Claim 14
Dependent Claim
25 words
The multi-ply article of claim 11 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with about 1% to about 40% by weight of carbon monoxide.
Claim 15
Dependent Claim
25 words
The multi-ply article of claim 11 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with about 5% to about 30% by weight of carbon monoxide.
Claim 16
Dependent Claim
46 words
The multi-ply article of claim 11 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with carbon monoxide and at least one other comonomer selected from the group consisting of olefinically unsaturated organic acids, the alkyl esters of such acids, and the metal salts of such acids.
Claim 17
Dependent Claim
20 words
The multi-ply article of claim 11 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with carbon monoxide and acrylic acid.
Claim 18
Dependent Claim
20 words
The multi-ply article of claim 11 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with carbon monoxide and methacrylic acid.
Claim 19
Dependent Claim
20 words
The multi-ply article of claim 11 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with carbon monoxide and vinyl acetate.
Claim 20
Dependent Claim
28 words
The multi-ply article of claim 11 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with carbon monoxide and an alkali metal salt of acrylic acid or methacrylic acid.
Claim 21
Dependent Claim
27 words
The multi-ply article of claim 11 wherein the olefin/carbon monoxide interpolymer comprises ethylene polymerized with carbon monoxide and an alkyl ester of an olefinically unsaturated organic acid.
Claim 22
Dependent Claim
27 words
The multi-ply article of claim 11 wherein the olefin/carbon monoxide interpolymer comprises an ethylene/carbon monoxide interpolymer wherein the carbon monoxide groups in the polymer chain are hydrogenated.
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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |