US4855181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminate with a blend layer of polyesteramide and ethylene-vinyl acetate copolymer
Assignee: Kuraray Co Ltd
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Filing: 1987-12-03
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Granted: 1989-08-08
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Expires: 2007-12-03
Abstract
Abstract A laminated structure comprising a base material comprising polyvinyl chloride resin, polystyrene resin, polyacrylic resin, polycarbonate resin and polyamide resin; having provided on at least one surface thereof a layer of a blend of a polyesteramide and an EVOH. In this laminated structure the base material layer and the EVOH layer adhere firmly to each other, and the structure is exhibits excellent gas barrier properties, prevention of plasticizer bleeding and soil prevention, and is useful as wall paper, portfolio, desk mat, etc.
Inventors
- 👤 Hiroyuki Shimo
- 👤 Isao Kanesige
- 👤 Nobuo Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:44
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/18; B32B27/22; B32B27/30; B32B27/306; B32B27/34; D; D06; D06N; D06N3/00; D06N3/12; D06N3/121; B32B2270/00; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31507; Y10T428/31725; Y10T428/31728; Y10T428/31732; Y10T428/31736; Y10T428/31739; Y10T428/31743; Y10T428/3175; Y10T428/31786; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
73 words
A laminated structure comprising a base layer of a resin selected from the group consisting of polyvinyl chloride resin, polystyrene resin, polyacrylic resin, polycarbonate resin and polyamide resin; having provided on at least one surface thereof, a layer of a blend of a polyesteramide, exhibiting a Tg (glass transition point) of not higher than 50° C., and a saponified product of ethylene vinyl acetate copolymer in a weight ratio between 5:95 to 35:65.
Claim 2
Dependent Claim
73 words
A laminated structure comprising a base layer of a resin selected from the group consisting of polyvinyl chloride resin, polystyrene resin, polyacrylic resin, polycarbonate resin and polyamide resin; having provided on at least one surface thereof, a layer of a blend of a polyesteramide, exhibiting a Tg (glass transition point) of not higher than 50° C., and a saponified product of ethylene vinyl acetate copolymer in a weight ratio between 5:95 to 35:65.
Claim 3
Dependent Claim
62 words
A laminated structure according to claim 1, wherein said polyesteramide comprises a repeating unit of at least one diamine component having 2 to 14 carbon atoms and a repeating unit of at least one dicarboxylic acid component having 5 to 14 carbon atoms, said polyesteramide comprising a molar ratio of the ester component and the amide component of from 5:95 to 40:60.
Claim 4
Dependent Claim
38 words
A laminated structure according to claim 1, wherein said saponified product of ethylene vinyl acetate copolymer has 20 to 60 mol % of ethylene and a saponification degree of the vinyl acetate component of not less than 90%.
Claim 5
Dependent Claim
32 words
A laminated structure according to claim 1, wherein the film thickness of said layer of a blend of a polyesteramide and a saponified product of ethylene-vinyl acetate is 0.5 to 20 μ.
Claim 6
Dependent Claim
17 words
A laminated structure according to claim 1, wherein said polyvinyl chloride base material further comprises a plasticizer.
Claim 7
Dependent Claim
49 words
A laminated structure according to claim 1, wherein said layer of a blend of a polyesteramide and a saponified product of ethylene-vinyl acetate copolymer is formed by coating a solution of said blend of the polyesteramide and the saponified product of ethylene-vinyl acetate copolymer, and thereafter drying said solution.
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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) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |