US4491508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing curable coating composition from alcohol, colloidal silica, silylacrylate and multiacrylate monomer
Assignee: General Electric Co
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Filing: 1983-01-21
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Granted: 1985-01-01
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Expires: 2003-01-21
Abstract
Abstract UV curable coating compositions are provided based on the use of photoinitiator with the hydrolysis product of silylacrylate and aqueous colloidal silica. The UV curable silicone coating compositions also can contain polyfunctional acrylate. The UV curable hardcoat composition can be applied onto various substrates, for example, a polycarbonate substrate, and thereafter cured under UV radiation to produce adherent and abrasion resistant coated articles.
Inventors
- 👤 Daniel R. Olson
- 👤 Karen K. Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:57
CPC Classifications
C; C09; C09D; C09D4/00; C08; C08F; C08F222/00; C08F222/10; C08F222/1006; C08F222/102; C08F222/103; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
A method for making a solventless hardcoat composition which comprises (1) agitating a mixture of a water miscible alcohol, colloidal silica and a silyl acrylate of the formula, ##STR4## (2) adding acrylic monomer of the formula, [(R.sup.2).sub.2 C═CR.sup.2 --C--O].sub.n R.sup.4, to the resulting mixture of (1) and (3) effecting removal of volatiles under reduced pressure from the mixture of (2) where R is a C.sub.(1-13) monovalent organic radical, R 1 is a C.sub.(1-8) alkyl radical, R 2 is selected from hydrogen, R and mixtures thereof, R 3 is C.sub.(1-8) alkylene, a is a whole number equal to 0-2 inclusive, b is an integer equal to 1-3 inclusive, and the sum of a+b is equal to 3 and n is an integer from 2 to 4 inclusive.
Claim 2
Independent Claim
126 words
A method for making a solventless hardcoat composition which comprises (1) agitating a mixture of a water miscible alcohol, colloidal silica and a silyl acrylate of the formula, ##STR4## (2) adding acrylic monomer of the formula, [(R.sup.2).sub.2 C═CR.sup.2 --C--O].sub.n R.sup.4, to the resulting mixture of (1) and (3) effecting removal of volatiles under reduced pressure from the mixture of (2) where R is a C.sub.(1-13) monovalent organic radical, R 1 is a C.sub.(1-8) alkyl radical, R 2 is selected from hydrogen, R and mixtures thereof, R 3 is C.sub.(1-8) alkylene, a is a whole number equal to 0-2 inclusive, b is an integer equal to 1-3 inclusive, and the sum of a+b is equal to 3 and n is an integer from 2 to 4 inclusive.
Claim 3
Dependent Claim
16 words
A method in accordance with claim 1, where a UV photoinitiator is added to the mixture.
Claim 4
Dependent Claim
13 words
A method in accordance with claim 1, where the silyl acrylate is ν-methacryloxypropyltrimethoxysilane.
Claim 5
Dependent Claim
16 words
A method in accordance with claim 1, where the acrylate monomer is a mixture of hexanedioldiacrylate/trimethylolpropanetriacrylate.
Claim 6
Dependent Claim
12 words
A method in accordance with claim 2, where the photoinitiator is α,α-diethoxyacetophenone.
References Cited (Backward Citations)
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Cited
US4027073A
Cited
US4246038A
Cited
US4198465A
Cited
US4315970A
Cited
US4348462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-01 | 1988-07-02 | 1989-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-01 | 1992-07-02 | 1993-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-01 | 1996-07-02 | 1997-01-01 | $7700.00 | Window Closed / Lapsed |