US3998979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocurable pigmented coating compositions
Assignee: Imperial Chemical Industries Ltd
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Filing: 1975-11-04
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Granted: 1976-12-21
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Expires: 1995-11-04
Abstract
Abstract Pigmented coating compositions cureable in visible light which comprise as film former an unsaturated oil-modified alkyd resin, a polyurethane oil, polybutadiene or allyl ether-containing unsaturated polyester and a photosensitizer of structure <IMAGE> wherein A is benzenoid or heterocyclic of benzenoid character.
Inventors
- 👤 Colin Armstrong
- 👤 Peter Francis Nicks
- 👤 Derek John Walbridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:47
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/91; C08G63/914; C09; C09D; C09D5/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31616; Y10T428/31786; Y10T428/3179
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
59 words
A pigmented coating composition suitable for use in visible light which comprises an unsaturated oil-modified alkyd resin polymer capable of autoxidative polymerisation in the presence of oxygen and 0.05 - 5% by weight based on the combined weight of pigment and polymer of a photosensitiser selected from the group consisting of benzil, anisil, o-tolil, 1-naphthil, 2-naphthil, furil and thenil.
Claim 2
Dependent Claim
59 words
A pigmented coating composition suitable for use in visible light which comprises an unsaturated oil-modified alkyd resin polymer capable of autoxidative polymerisation in the presence of oxygen and 0.05 - 5% by weight based on the combined weight of pigment and polymer of a photosensitiser selected from the group consisting of benzil, anisil, o-tolil, 1-naphthil, 2-naphthil, furil and thenil.
Claim 3
Dependent Claim
28 words
A pigmented coating composition according to claim 1 wherein there is present 0.1 - 2% by weight of photosensitiser based on the combined weight of pigment and polymer.
Claim 4
Dependent Claim
14 words
A pigmented coating composition according to claim 1 wherein the pigment comprises titanium dioxide.
Claim 5
Dependent Claim
38 words
A process for producing a coating upon a substrate which comprises applying to the substrate a pigmented composition according to claim 1 and exposing the composition to actinic radiation having a wavelength within the range 300 - 600nm.
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) | 1979-12-21 | 1980-06-21 | 1980-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-21 | 1984-06-21 | 1984-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-21 | 1988-06-21 | 1988-12-21 | $7700.00 | Window Closed / Lapsed |