US4371585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for applying a silicone or siloxane-based abrasion resistant coating to a polycarbonate substrate, and coated articles
Assignee: Arkema France SA
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Filing: 1979-08-13
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Granted: 1983-02-01
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Expires: 1999-08-13
Abstract
Abstract A tie coating composition comprising a polymer or copolymer of an alkyl methacrylate and a flow improver dissolved in an organic solvent system is applied to a polycarbonate substrate prior to applying a silicone or siloxane-based abrasion resistant coating.
Inventors
- 👤 Nazir A. Memon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:52
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/02; C; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/043; C08J7/046; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C08J2369/00; C08J2433/00; C08J2433/04; C08J2433/06; C08J2483/00; C08J2483/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
88 words
A process for applying and adhering a silicone or siloxane based abrasion-resistant coating to a polycarbonate substrate comprising applying a tie coating composition comprising a thermoplastic polymer of an alkyl methacrylate or a thermoplastic copolymer polymerized from a monomer mixture consisting essentially of at least 50 weight percent of at least one alkyl methacrylate or a mixture of such polymers and a flow improver dissolved in one or more organic solvents and drying at a temperature of about 20° to 30° C. prior to applying said abrasion-resistant coating.
Claim 2
Dependent Claim
88 words
A process for applying and adhering a silicone or siloxane based abrasion-resistant coating to a polycarbonate substrate comprising applying a tie coating composition comprising a thermoplastic polymer of an alkyl methacrylate or a thermoplastic copolymer polymerized from a monomer mixture consisting essentially of at least 50 weight percent of at least one alkyl methacrylate or a mixture of such polymers and a flow improver dissolved in one or more organic solvents and drying at a temperature of about 20° to 30° C. prior to applying said abrasion-resistant coating.
Claim 3
Dependent Claim
8 words
Articles produced by a process of claim 1.
Claim 4
Dependent Claim
16 words
Process in accordance with claim 1 wherein said tie coating composition further comprises a UV absorber.
Claim 5
Dependent Claim
8 words
Articles produced by the process of claim 3.
References Cited (Backward Citations)
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US3594264A
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US3707397A
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US3933407A
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US4045602A
Cited
US4103065A
Cited
US4177301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |