US4948654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet material useful in forming protective and decorative coatings
Assignee: Eastman Chemical Co
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Filing: 1989-02-27
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Granted: 1990-08-14
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Expires: 2009-02-27
Abstract
Abstract A sheet material for covering substrates comprising (a) a carrier layer comprising a polymer selected from polyesterethers, copolyesters and blends thereof, and (b) a tie layer bonded thereto, said tie layer being a low molecular weight polymer containing ethylene repeat units. The sheet material is provided with a decorative and/or protective coating, and preferably, a top coat.
Inventors
- 👤 Richard V. Brooks
- 👤 Michael C. Carmody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:01
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B29; B29C; B29C45/00; B29C45/14; B29C45/14778; B29C45/14811; B32B27/28; B32B27/285; B32B27/32; B32B27/36; B29K; B29K2995/00; B29K2995/0018; B29K2995/002; B29K2995/0026; B32B2307/00; B32B2307/50; B32B2307/54; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24876; Y10T428/31504; Y10T428/31786; Y10T428/31794
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
144 words
A protective and/or decorative sheet material for covering substrates comprising (a) a carrier layer comprising a polymer selected from polyesterethers, copolyesters and blends thereof, (b) a tie layer bonded thereto, said tie layer being a low molecular weight polymer containing ethylene repeat units modified with about 0.1 to about 30 wt. percent of at least one unsaturated monomer which can be copolymerized with ethylene, said tie layer having a melt flow rate of about 0.25 to about 40 g/10 min, a tensile strength at break of at least 25 kg/cm 2 , an elongation at break of greater than 100% and a melting point of at least 65° C., (c) a layer of polyolefin bonded to the surface of said tie layer opposite said polymeric support, and (d) a decorative and/or protective coating bonded to the surface said polymeric support opposite said tie layer.
Claim 2
Dependent Claim
144 words
A protective and/or decorative sheet material for covering substrates comprising (a) a carrier layer comprising a polymer selected from polyesterethers, copolyesters and blends thereof, (b) a tie layer bonded thereto, said tie layer being a low molecular weight polymer containing ethylene repeat units modified with about 0.1 to about 30 wt. percent of at least one unsaturated monomer which can be copolymerized with ethylene, said tie layer having a melt flow rate of about 0.25 to about 40 g/10 min, a tensile strength at break of at least 25 kg/cm 2 , an elongation at break of greater than 100% and a melting point of at least 65° C., (c) a layer of polyolefin bonded to the surface of said tie layer opposite said polymeric support, and (d) a decorative and/or protective coating bonded to the surface said polymeric support opposite said tie layer.
Claim 3
Dependent Claim
14 words
Sheet material according to claim 7 wherein said decorative and/or protective coating is paint.
Claim 4
Dependent Claim
19 words
Sheet material according to claim 7 wherein a top or clearcoat is applied to said decorative and/or protective coating.
Claim 5
Dependent Claim
28 words
A structural element comprising a substrate having securely bonded to at least one surface thereof in a smooth and wrinkle-free state a sheet material according to claim 7.
Claim 6
Dependent Claim
113 words
A sheet material especially adapted for bonding to and covering polyolefin substrates comprising (a) a carrier layer comprising a polymer selected from polyesterethers, copolyesters and blends thereof, and (b) a tie layer bonded thereto, said tie layer being a low molecular weight polymer of ethylene repeat units modified with about 0.1 to about 30 wt. percent of at least one unsaturated monomer which can be copolymerized with ethylene, said tie layer having a melt flow rate of about 0.25 to about 40 g/10 min, a tensile strength at break of at least 25 kg/cm 2 , an elongation at break of greater than 100% and a melting point of at least 65° C.
Claim 7
Dependent Claim
113 words
A sheet material especially adapted for bonding to and covering polyolefin substrates comprising (a) a carrier layer comprising a polymer selected from polyesterethers, copolyesters and blends thereof, and (b) a tie layer bonded thereto, said tie layer being a low molecular weight polymer of ethylene repeat units modified with about 0.1 to about 30 wt. percent of at least one unsaturated monomer which can be copolymerized with ethylene, said tie layer having a melt flow rate of about 0.25 to about 40 g/10 min, a tensile strength at break of at least 25 kg/cm 2 , an elongation at break of greater than 100% and a melting point of at least 65° C.
Claim 8
Dependent Claim
72 words
Sheet material according to claim 1 wherein said tie layer has a melt flow rate at 190° C. of about 0.8-1.2 g/10 min, a density of about 0.86-0.90, a tensile strength at break of about 25-35 kg/cm 2 , an elongation at break of <450%, an Izod impact strength of unbreakable, a D-shore hardness of about 14-18, an A-shore hardness of about 70-74 and a melting point of at least 70° C.
Claim 9
Dependent Claim
24 words
A sheet material according to claim 1 which further comprises a coating bonded to the side of said carrier layer opposite said tie layer.
Claim 10
Dependent Claim
16 words
A sheet material according to claim 1 wherein said carrier layer consists essentially of said polyesterether.
Claim 11
Dependent Claim
30 words
A structural element comprising polyolefin a substrate having securely bonded to at least one surface thereof in a smooth and wrinkle-free state a sheet material as described in claim 1.
Claim 12
Dependent Claim
38 words
A sheet material according to claim 1 wherein said carrier layer comprises a blend of a polyesterether and a copolyester having repeat units from terephthalic acid and at least two glycols having from 2 to 10 carbon atoms.
Claim 13
Dependent Claim
14 words
Sheet material according to claim 10 wherein said glycols are ethylene glycol and 1,4-cyclohexanedimethanol.
References Cited (Backward Citations)
US2761791A
Cited
US2941898A
Cited
US3206323A
Cited
US3425857A
Cited
US3551232A
Cited
US3508947A
Cited
US3645773A
Cited
US3935353A
Cited
US4001024A
Cited
US4258106A
Cited
US4205028A
Cited
US4205028B1
Cited
US4350739A
Cited
US4282285A
Cited
US4356230A
Cited
US4349469A
Cited
US4656098A
Cited
US4751121A
Cited
US4818589A
Cited
US4769100A
Cited
US4810540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |