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US4135007A
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Radiation curable coating composition comprising an acryl urethane oligomer, and an ultra-violet absorber
Assignee: GAF Chemicals Corp
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Filing: 1977-12-29
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Granted: 1979-01-16
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Expires: 1997-12-29
Abstract
Abstract A radiation curable coating comprising: A. An oligomer of Formula I: <CHEM> wherein: R<1> is hydrogen or methyl; Y is a divalent urethane residue; B. A benzylidene acid ester of Formula IV: <CHEM> wherein R<4> is independently alkyl or hydroxy alkylene. Preferably the coating composition contains a vinyl monomer copolymerizable with the oligomer. The process for curing the coating is also disclosed.
Inventors
- 👤 Donald H. Lorenz
- 👤 Shu T. Tu
- 👤 Donald P. Wyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:11
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/09; G03F7/091; B; B05; B05D; B05D3/00; B05D3/06; C; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; C08F299/00; C08F299/02; C08F299/06; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/672; G03F7/027; G03F7/028; G03F7/031; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31554; Y10T428/31558; Y10T428/31573; Y10T428/3158; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
A process for coating a substrate comprising in sequence the steps of: I. contacting the substrate with a coating composition comprising: A. an oligomer of Formula I: ##STR8## wherein: R 1 is hydrogen or methyl; Y is a divalent urethane residue; B. a benzylidene acid ester ultra-violet light absorber of the Formula IV: ##STR9## wherein R 4 is independently alkyl or hydroxy alkylene; C. a photoinitiator to form a coated substrate wherein the amount of B. is 0.5 to 3 weight percent based on the weight of the composition, Ii. exposing the coated substrate to actinic radiation until an adherent dry polymerized weather-resistant coating is formed on the substrate.
Claim 2
Dependent Claim
109 words
A process for coating a substrate comprising in sequence the steps of: I. contacting the substrate with a coating composition comprising: A. an oligomer of Formula I: ##STR8## wherein: R 1 is hydrogen or methyl; Y is a divalent urethane residue; B. a benzylidene acid ester ultra-violet light absorber of the Formula IV: ##STR9## wherein R 4 is independently alkyl or hydroxy alkylene; C. a photoinitiator to form a coated substrate wherein the amount of B. is 0.5 to 3 weight percent based on the weight of the composition, Ii. exposing the coated substrate to actinic radiation until an adherent dry polymerized weather-resistant coating is formed on the substrate.
Claim 3
Dependent Claim
12 words
A process of claim 1 wherein the actinic radiation is ultra-violet light.
Claim 4
Dependent Claim
16 words
A process of claim 1 wherein the curing is effected at a speed of 25-50 ft/min/lamp.
Claim 5
Dependent Claim
82 words
A process for coating a substrate comprising in sequence the steps of: I. contacting the substrate with a coating composition comprising: A. an oligomer of Formula I: ##STR10## wherein: R 1 is hydrogen or methyl; Y is a divalent urethane residue; B. an acrylic ultra-violet light absorber of the Formula IV: ##STR11## wherein R 4 is independently alkyl or hydroxy alkylene; II. exposing the coated substrate to an electron beam until an adherent dry polymerized weather-resistant coating is formed on the substrate.
Claim 6
Dependent Claim
82 words
A process for coating a substrate comprising in sequence the steps of: I. contacting the substrate with a coating composition comprising: A. an oligomer of Formula I: ##STR10## wherein: R 1 is hydrogen or methyl; Y is a divalent urethane residue; B. an acrylic ultra-violet light absorber of the Formula IV: ##STR11## wherein R 4 is independently alkyl or hydroxy alkylene; II. exposing the coated substrate to an electron beam until an adherent dry polymerized weather-resistant coating is formed on the substrate.
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) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |