Patent US5990188A successfully refreshed from Google Patents.
US5990188A
Expired / Lapsed
US
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Radiation curable coatings with improved weatherability
Assignee: General Electric Co
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Filing: 1996-08-15
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Granted: 1999-11-23
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Expires: 2016-08-15
Abstract
Abstract The present invention provides the discovery of an improved radiation curable coating composition comprising at least one acrylic monomer, a photoinitiator, and an ultraviolet light absorber selected from triazine or a dibenzoyl resorcinol derivative or a mixture thereof, the dibenzoyl resorcinol derivative having the formula where Ar and Ar' are independently substituted or unsubstituted monocyclic or polycyclic aryl groups and R' is H or a linear or branched alkyl chain having less than about 10 carbons bearing a -Si(OR2)3, where R2 is a C1 to C6 alkyl group.
Inventors
- 👤 Gautam Ambalal Patel
- 👤 James Edward Pickett
- 👤 Gregory Ronald Gillette
- 👤 George Frederic Medford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:22
CPC Classifications
C; C09; C09D; C09D4/00; C09D4/06; C08; C08F; C08F2/00; C08F2/46; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/132; C09D175/00; C09D175/04; C09D5/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
147 words
A radiation curable coating composition comprising about 5-40 weight % silyl acrylate modified colloidal silica, silica having an average particle size in the range of about 15-30 nm where said silica is silane functionalized colloidal silica in hexanediol diacrylate, about 50-90 weight % hexafunctional polyurethane acrylate, about 0.5-5.0 weight % 2, 4, 6-trimethylbenzoyltriphenylphosphine oxide, about 1-20 weight % UV absorber dibenzoyl resorcinol derivative having the formula ##STR8## where Ar and Ar' are independently substituted or unsubstituted monocyclic or polycyclic aryl groups and R' is H or a linear or branched alkyl chain having less than about 10 carbons bearing a --Si(OR 2 ) 3 , where R 2 is a C 1 to C 6 alkyl group, about 0.1-4.0 weight % hindered amine light stabilizer, and a surfactant or leveling agent, where said coating is diluted with an alcohol or a glycol ether solvent or mixtures thereof.
Claim 2
Dependent Claim
147 words
A radiation curable coating composition comprising about 5-40 weight % silyl acrylate modified colloidal silica, silica having an average particle size in the range of about 15-30 nm where said silica is silane functionalized colloidal silica in hexanediol diacrylate, about 50-90 weight % hexafunctional polyurethane acrylate, about 0.5-5.0 weight % 2, 4, 6-trimethylbenzoyltriphenylphosphine oxide, about 1-20 weight % UV absorber dibenzoyl resorcinol derivative having the formula ##STR8## where Ar and Ar' are independently substituted or unsubstituted monocyclic or polycyclic aryl groups and R' is H or a linear or branched alkyl chain having less than about 10 carbons bearing a --Si(OR 2 ) 3 , where R 2 is a C 1 to C 6 alkyl group, about 0.1-4.0 weight % hindered amine light stabilizer, and a surfactant or leveling agent, where said coating is diluted with an alcohol or a glycol ether solvent or mixtures thereof.
Claim 3
Dependent Claim
10 words
A solid substrate coated with the composition of claim 1.
Claim 4
Dependent Claim
14 words
An article obtained by ultraviolet curing of the solid substrate according to claim 2.
Claim 5
Dependent Claim
17 words
A thermoplastic substrate coated with a UV cured coating prepared by curing the composition of claim 1.
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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) | 2002-11-22 | 2003-05-24 | 2003-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-22 | 2007-05-24 | 2007-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-22 | 2011-05-24 | 2011-11-23 | $7700.00 | Window Closed / Lapsed |