US5271968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for production of an acrylic coated polycarbonate article
Assignee: General Electric Co
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Filing: 1990-02-20
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Granted: 1993-12-21
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Expires: 2010-02-20
Abstract
Abstract A method for producing an abrasion-resistant, ultraviolet radiation cured coating on a surface of a polymeric substrate is disclosed, as well as the article produced from the method. The uncured coating material which is substantially free of non-reactive volatile components is (i) applied to the substrate (ii) heated along with the substrate to a temperature sufficient to drive a portion of the coating material into a region beneath the surface of the substrate, (iii) and cured onto the substrate by exposing the coating material under anaerobic conditions to sufficient ultraviolet radiation to cure the coating material. Heating of the solvent-free coating prior to ultraviolet radiation cure and while in contact with the substrate results in improved adhesion of the coating to the substrate.
Inventors
- 👤 Dennis J. Coyle
- 👤 Earl T. Crouch
- 👤 Dimitris Katsamberis
- 👤 Stuart R. Kerr, III
- 👤 Larry N. Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:48
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/06; B05D3/061; B05D3/065; B05D3/067; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; B05D2201/00; B05D2252/00; B05D2252/02; C08J2369/00; C08J2433/00; C08J2433/04; C08J2433/06; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/25; Y10T428/259; Y10T428/26; Y10T428/263; Y10T428/31; Y10T428/31504; Y10T428/31507; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
A method for producing a polycarbonate article having an ultraviolet radiation cured surface coating, said method comprising the steps of: a) contacting an ultraviolet radiation curable coating composition with a surface of a thermoplastic substrate for a period of time and at a temperature sufficient to allow a portion of said composition to diffuse into a region beneath said surface of said substrate to create a region comprising coating composition and thermoplastic resin, said temperature being between 90° F. and 150° F., said region having a thickness of from between 0.1 microns and 5 microns, said coating composition being substantially free of non-reactive volatile components; and b) exposing said applied coating composition to sufficient ultraviolet radiation to effect cure of said coating composition.
Claim 2
Independent Claim
123 words
A method for producing a polycarbonate article having an ultraviolet radiation cured surface coating, said method comprising the steps of: a) contacting an ultraviolet radiation curable coating composition with a surface of a thermoplastic substrate for a period of time and at a temperature sufficient to allow a portion of said composition to diffuse into a region beneath said surface of said substrate to create a region comprising coating composition and thermoplastic resin, said temperature being between 90° F. and 150° F., said region having a thickness of from between 0.1 microns and 5 microns, said coating composition being substantially free of non-reactive volatile components; and b) exposing said applied coating composition to sufficient ultraviolet radiation to effect cure of said coating composition.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein said cured coating composition consists of solids.
Claim 4
Dependent Claim
27 words
The method of claim 1, wherein said coating composition comprises a polyfunctional acrylate monomer, a photoinitiator and from 20 to 50 percent by weight of 1,6-hexanediol diacrylate.
Claim 5
Dependent Claim
15 words
The method of claim 1, wherein said temperature is from 110° F. to 130° F.
Claim 6
Dependent Claim
12 words
The method of claim 1, wherein said temperature is about 120° F.
Claim 7
Dependent Claim
21 words
The method of claim 1, wherein said cured coating provides a hardcoat having a thickness of from 0.5 to 5 mil.
Claim 8
Dependent Claim
16 words
The method of claim 1 wherein said thermoplastic resin substrate is an aromatic polycarbonate resin substrate.
Claim 9
Independent Claim
125 words
A method for providing an acrylic coated polycarbonate article, said method comprising the steps of: a) applying an acrylic coating composition to a surface of an aromatic polycarbonate substrate, said coating composition comprising multifunctional acrylic monomers and a photoinitiator, said coating composition being substantially free of non-reactive volatile components; b) heating said applied coating composition and said substrate having said coating composition thereon to a temperature of from 90° F. to 150° F. for a time sufficient to cause a portion of said coating composition to diffuse into a region of from 0.05 microns to 5 microns beneath said surface of the substrate; and c) exposing said applied coating composition to sufficient ultraviolet radiation under substantially anaerobic conditions to effect cure of said coating composition.
Claim 10
Independent Claim
125 words
A method for providing an acrylic coated polycarbonate article, said method comprising the steps of: a) applying an acrylic coating composition to a surface of an aromatic polycarbonate substrate, said coating composition comprising multifunctional acrylic monomers and a photoinitiator, said coating composition being substantially free of non-reactive volatile components; b) heating said applied coating composition and said substrate having said coating composition thereon to a temperature of from 90° F. to 150° F. for a time sufficient to cause a portion of said coating composition to diffuse into a region of from 0.05 microns to 5 microns beneath said surface of the substrate; and c) exposing said applied coating composition to sufficient ultraviolet radiation under substantially anaerobic conditions to effect cure of said coating composition.
Claim 11
Independent Claim
113 words
A method for producing thermoplastic resin article having an ultraviolet radiation cured surface coating, said method comprising the steps of: a) contacting an ultraviolet radiation curable coating composition with a surface of a thermoplastic substrate for a period of time and at a temperature sufficient to allow a portion of said composition to diffuse into a region beneath said surface of said substrate to create a region comprising coating composition and thermoplastic resin, said temperature being between 90° F. and 150° F., said region having a thickness of from between 0.1 microns and 5 microns; and b) exposing said applied coating composition to sufficient ultraviolet radiation to effect cure of said coating composition.
Claim 12
Independent Claim
113 words
A method for producing thermoplastic resin article having an ultraviolet radiation cured surface coating, said method comprising the steps of: a) contacting an ultraviolet radiation curable coating composition with a surface of a thermoplastic substrate for a period of time and at a temperature sufficient to allow a portion of said composition to diffuse into a region beneath said surface of said substrate to create a region comprising coating composition and thermoplastic resin, said temperature being between 90° F. and 150° F., said region having a thickness of from between 0.1 microns and 5 microns; and b) exposing said applied coating composition to sufficient ultraviolet radiation to effect cure of said coating composition.
References Cited (Backward Citations)
US3607380A
Cited
US3655481A
Cited
US3658620A
Cited
US3666591A
Cited
US3669796A
Cited
FR2021749A1
Cited
US3689346A
Cited
US4057657A
Cited
US4050269A
Cited
DE2705273A1
Cited
FR2380078A1
Cited
US4267215A
Cited
US4173490A
Cited
US4384911A
Cited
US4198465A
Cited
DE2928512A1
Cited
US4295907A
Cited
US4420502A
Cited
US4323597A
Cited
US4427732A
Cited
US4478876A
Cited
US4543275A
Cited
US4491508A
Cited
US4455205A
Cited
US4486504A
Cited
US4464220A
Cited
US4548884A
Cited
US4528261B1
Cited
US4528261A
Cited
US4792492A
Cited
EP0147061A1
Cited
US4477529A
Cited
US4673708A
Cited
EP0190997B1
Cited
EP0228671A1
Cited
US4913967A
Cited
JPS63194779A
Cited
EP0372213A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-20 | 1997-06-21 | 1997-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-20 | 2001-06-21 | 2001-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-20 | 2005-06-21 | 2005-12-21 | $7700.00 | Window Closed / Lapsed |