US5466535A
Expired / Lapsed
US
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Polymeric film
Assignee: Imperial Chemical Industries Ltd
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Filing: 1993-06-15
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Granted: 1995-11-14
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Expires: 2013-06-15
Abstract
Abstract A polymeric film has a polyester substrate layer and a cross-linked adherent layer of an acrylic resin and a phthalate ester. The adherent layer exhibits improved adhesion to the substrate and to a range of subsequently applied layers, such as inks, lacquers, and vinyl chloride polymers.
Inventors
- 👤 David E. Higgins
- 👤 Martin Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:53
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/18; B32B27/30; B32B27/308; B32B27/36; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/036; C08J2367/00; C08J2367/02; C08J2433/00; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/0145; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
62 words
In a polymeric film comprising a self supporting substrate layer of polyester material having on at least one surface thereof a cross-linked adherent layer comprising an acrylic resin, the improvement wherein said adherent layer includes a phthalate ester, the phthalate ester being present in an amount effective to improve the adhesion of said adherent layer to the substrate layer of polyester material.
Claim 2
Dependent Claim
62 words
In a polymeric film comprising a self supporting substrate layer of polyester material having on at least one surface thereof a cross-linked adherent layer comprising an acrylic resin, the improvement wherein said adherent layer includes a phthalate ester, the phthalate ester being present in an amount effective to improve the adhesion of said adherent layer to the substrate layer of polyester material.
Claim 3
Dependent Claim
35 words
A polymeric film according to claim 1 wherein the phthalate ester is present in the adherent layer in the range from 0.05% to 20% by weight relative to the total weight of the adherent layer.
Claim 4
Dependent Claim
35 words
A polymeric film according to claim 1 wherein the acrylic resin is present in the adherent layer in an amount of at least 30% by weight relative to the total weight of the adherent layer.
Claim 5
Dependent Claim
43 words
A polymeric film according to claim 3 wherein the acrylic resin comprises from 70 to 96 mole % of at least one monomer selected from the group consisting of an ester of acrylic acid, an ester of methacrylic acid, and mixtures derivatives thereof.
Claim 6
Dependent Claim
19 words
A polymeric film according to claim 4 wherein the acrylic resin comprises an alkyl acrylate and an alkyl methacrylate.
Claim 7
Dependent Claim
47 words
A polymeric film according to claim 5 wherein the amount of phthalate ester is in the range of 0.8 to 2.0% by weight relative to the total weight of the adherent layer and the phthalate ester has a dielectric constant in the range of 3.0 to 8.0.
Claim 8
Dependent Claim
111 words
A polymeric film according to claim 6 wherein the amount of phthalate ester is in the range of 0.8 to 2.0% by weight relative to the total weight of the adherent layer and the phthalate ester is selected from the group consisting of dimethyl phthalate, diethyl phthalate, dibutyl phthalate, diisohexyl phthalate, butyl 2-ethylhexyl phthalate, di-2-ethylhexyl phthalate, diisooctyl phthalate, dicapryl phthalate, heptyl nonyl phthalate, diisononyl phthalate, butyl isodecyl phthalate, n-octyl n-decyl phthalate, diisodecyl phthalate, heptyl nonyl undecyl phthalate, diundecyl phthalate, ditridecyl phthalate, diallyl phthalate, butyl cyclohexyl phthalate, dicyclohexyl phthalate, diphenyl phthalate, butyl benzyl phthalate, cyclohexyl benzyl phthalate, benzyl 2-ethylhexyl phthalate, 7-(2,6,6,8-tetramethyl-4-oxa-3-oxo-nonyl)benzyl phthalate, methoxyethoxyethyl benzyl phthalate, dimethoxyethyl phthalate, diethoxyethoxyethyl phthalate and dibutoxyethyl phthalate.
Claim 9
Dependent Claim
15 words
A polymeric film according to claim 7 wherein the phthalate ester is benzyl 2-ethylhexyl phthalate.
Claim 10
Dependent Claim
28 words
A polymeric film according to claim 1 wherein a vinyl chloride polymer layer is present on the surface of the adherent layer, remote from the polyester substrate layer.
Claim 11
Dependent Claim
22 words
A polymeric film according to claim 9 wherein an ink layer is present between the adherent layer and vinyl chloride polymer layer.
Claim 12
Dependent Claim
20 words
A polymeric film according to claim 1 wherein the phthalate ester has a molecular weight of from 300 to 400.
Claim 13
Dependent Claim
32 words
A polymeric film according to claim 1 wherein the amount of phthalate ester is in the range of 0.5 to 5% by weight relative to the total weight of the adherent layer.
Claim 14
Dependent Claim
76 words
A polymeric film comprising a substrate layer of polyester material having on at least one surface thereof a cross-linked adherent layer comprising an acrylic resin and a phthalate ester, the phthalate ester being present in the adherent layer in the range from 0.05% to 20% by weight relative to the total weight of the adherent layer, said phthalate ester functioning to improve the adhesion of the adherent layer to a subsequently applied vinyl chloride polymer layer.
Claim 15
Dependent Claim
76 words
A polymeric film comprising a substrate layer of polyester material having on at least one surface thereof a cross-linked adherent layer comprising an acrylic resin and a phthalate ester, the phthalate ester being present in the adherent layer in the range from 0.05% to 20% by weight relative to the total weight of the adherent layer, said phthalate ester functioning to improve the adhesion of the adherent layer to a subsequently applied vinyl chloride polymer layer.
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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) | 1998-11-13 | 1999-05-15 | 1999-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-13 | 2003-05-15 | 2003-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-13 | 2007-05-15 | 2007-11-14 | $7700.00 | Window Closed / Lapsed |