US4557980A
Expired / Lapsed
US
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Radiation curable coating for film structure
Assignee: CPFilms Inc
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Filing: 1984-08-21
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Granted: 1985-12-10
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Expires: 2004-08-21
Abstract
Abstract The present invention relates to a unique radiation curable coating formulation used in the manufacture of window films. The coating composition is a mixture of radiation polymerizable monomers. The mixture includes a triacrylate or a tetraacrylate and acrylic acid. The thickness of the coating after polymerization ranges between about 1 and 2.5 microns. The coating can be applied to metal substrates and is used to achieve a superior abrasion resistant coating having optimum infrared absorption, while using high infrared absorption components in the coating mixture. Typically, the coating is applied to metal, for example, to aluminum substrates used in the fabrication of insulating window film or window structures. A process for applying the coating to such substrates is also disclosed.
Inventors
- 👤 William P. Hodnett, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:54
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/1033; B32B17/10174; C; C09; C09D; C09D4/00; B32B2305/00; B32B2305/72; B32B2307/00; B32B2307/50; B32B2307/554; B32B2605/00; B32B2605/006; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
61 words
A radiation curable coating for a film structure, comprising a coating composition of a mixture of radiation polymerizable monomers comprising a triacrylate or tetraacrylate monomer and acrylic acid, said coating adhered to a substrate, the thickness of said coating after polymerization ranging between about 1 and about 2.5 microns, whereby an abrasion resistant coating having substantially reduced infrared absorption is obtained.
Claim 2
Dependent Claim
61 words
A radiation curable coating for a film structure, comprising a coating composition of a mixture of radiation polymerizable monomers comprising a triacrylate or tetraacrylate monomer and acrylic acid, said coating adhered to a substrate, the thickness of said coating after polymerization ranging between about 1 and about 2.5 microns, whereby an abrasion resistant coating having substantially reduced infrared absorption is obtained.
Claim 3
Dependent Claim
13 words
The radiation curable coating according to claim 1, wherein the substrate is non-metallic.
Claim 4
Dependent Claim
16 words
The radiation curable coating according to claim 1, wherein the film structure is a window film.
Claim 5
Dependent Claim
20 words
The radiation curable coating according to claim 1, wherein the thickness of the coating after polymerization is about 1.8 microns.
Claim 6
Dependent Claim
14 words
The radiation curable coating according to claim 1, wherein the tetraacrylate is pentaerythritol tetraacrylate.
Claim 7
Dependent Claim
26 words
The radiation curable coating according to claim 1, wherein the concentration of the triacrylate or tetraacrylate is at least about 50% by weight of the mixture.
Claim 8
Dependent Claim
27 words
The radiation curable coating according to claim 1, wherein the concentration of the acrylic acid is from about 10% to about 50% by weight of the mixture.
Claim 9
Dependent Claim
15 words
The radiation curable coating according to claim 1, wherein the substrate is a metal substrate.
Claim 10
Dependent Claim
13 words
The radiation curable coating of claim 8, wherein the metal substrate is aluminum.
Claim 11
Dependent Claim
23 words
The radiation curable coating according to claim 1, wherein the film structure includes a primed layer between the coating layer and the substrate.
Claim 12
Dependent Claim
16 words
The radiation curable coating according to claim 10, wherein the primed layer is a polyester resin.
Claim 13
Dependent Claim
20 words
The radiation curable coating according to claim 1, wherein the substrate includes more than one metal or metal compound layers.
Claim 14
Dependent Claim
17 words
The radiation curable coating of claim 12, wherein a silver substrate layer is between metal oxide layers.
Claim 15
Dependent Claim
90 words
A window film comprising a radiation curable coating composition of a mixture of radiation polymerizable monomers consisting essentially of pentaerythritol tetraacrylate having a concentration of at least about 50% by weight of the mixture, and acrylic acid having a concentration from about 10% to about 50% by weight of the mixture, a metal substrate adhered to the coating composition and to a window film, the thickness of the coating after polymerization ranging between about 1 and about 2.5 microns, whereby an abrasion resistant, low infrared absorption insulating window is obtained.
Claim 16
Dependent Claim
90 words
A window film comprising a radiation curable coating composition of a mixture of radiation polymerizable monomers consisting essentially of pentaerythritol tetraacrylate having a concentration of at least about 50% by weight of the mixture, and acrylic acid having a concentration from about 10% to about 50% by weight of the mixture, a metal substrate adhered to the coating composition and to a window film, the thickness of the coating after polymerization ranging between about 1 and about 2.5 microns, whereby an abrasion resistant, low infrared absorption insulating window is obtained.
Claim 17
Dependent Claim
53 words
A radiation curable coating for a film structure, comprising a coating composition of a mixture of radiation polymerizable monomers comprising a triacrylate or tetraacrylate monomer and acrylic acid, said coating adhered to a substrate, the thickness of said coating after polymerization being at least about 1 micron, whereby an abrasion-resistant coating is obtained.
Claim 18
Dependent Claim
53 words
A radiation curable coating for a film structure, comprising a coating composition of a mixture of radiation polymerizable monomers comprising a triacrylate or tetraacrylate monomer and acrylic acid, said coating adhered to a substrate, the thickness of said coating after polymerization being at least about 1 micron, whereby an abrasion-resistant coating is obtained.
Claim 19
Dependent Claim
17 words
The radiation curable coating according to claim 15, wherein the substrate is a metal or metal compound.
Claim 20
Dependent Claim
23 words
The radiation curable coating according to claim 15 in which the concentration of acrylic acid is at least 10% by weight of mixture.
Claim 21
Dependent Claim
66 words
A process for fabricating a film structure, comprising the steps of preparing a coating composition of a mixture of radiation polymerizable monomers comprising a triacrylate or tetraacrylate monomer and acrylic acid; applying the mixture to a metal or metal compound substrate; coating the substrate to a thickness after polymerization between about 1 and about 2.5 microns; and radiation polymerizing the coating to obtain a film structure.
Claim 22
Dependent Claim
66 words
A process for fabricating a film structure, comprising the steps of preparing a coating composition of a mixture of radiation polymerizable monomers comprising a triacrylate or tetraacrylate monomer and acrylic acid; applying the mixture to a metal or metal compound substrate; coating the substrate to a thickness after polymerization between about 1 and about 2.5 microns; and radiation polymerizing the coating to obtain a film structure.
Claim 23
Dependent Claim
17 words
The process according to claim 18, further comprising radiation polymerization using electron beam free radical induced radiation.
Claim 24
Dependent Claim
13 words
The process according to claim 18, further comprising pentaerythritol tetraacrylate as the tetraacrylate.
Claim 25
Dependent Claim
24 words
The process according to claim 18, further comprising a concentration of triacrylate or tetraacrylate of at least about 50% by weight of the mixture.
Claim 26
Dependent Claim
24 words
The process according to claim 18, further comprising a concentration of acrylic acid from about 10% to about 50% by weight of the mixture.
Claim 27
Dependent Claim
13 words
The process according to claim 18, further comprising radiation polymerization using ultra-violet radiation.
Claim 28
Dependent Claim
11 words
The process according to claim 18, wherein the substrate is aluminum.
Claim 29
Dependent Claim
20 words
The process according to claim 18, further comprising coating the substrate to a thickness after polymerization of about 1.8 microns.
Claim 30
Dependent Claim
19 words
The process according to claim 18, further comprising applying a primed layer between the coating layer and the substrate.
Claim 31
Dependent Claim
14 words
The process according to claim 26, wherein the primed layer includes a polyester resin.
Claim 32
Dependent Claim
18 words
The process according to claim 18, wherein the substrate includes one or more metal or metal compound layers.
Claim 33
Dependent Claim
17 words
The process according to claim 28, wherein the substrate is a silver layer between metal oxide layers.
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) | 1988-12-09 | 1989-06-10 | 1989-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-09 | 1993-06-10 | 1993-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-09 | 1997-06-10 | 1997-12-10 | $7700.00 | Window Closed / Lapsed |