Patent US4221646A successfully refreshed from Google Patents.
US4221646A
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US
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Treated polyetherurethane photopolymer composition containing triaryl phosphine
Assignee: Goodyear Tire and Rubber Co
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Filing: 1978-05-01
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Granted: 1980-09-09
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Expires: 1998-05-01
Abstract
Abstract An ultra violet light polymerizable composition composed of a water dispersible liquid ethylenically unsaturated polyetherurethane of 0.5 to 5 parts of a photoinitiator and 0.01 to 0.5 parts of triaryl phosphine, the preferred photoinitiator being mono- or di-alkoxy benzoin having alkoxy radicals containing 1 to 20 carbon atoms.
Inventors
- 👤 Anthony F. Finelli
- 👤 Michael E. Kimball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:59
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C; C08; C08F; C08F299/00; C08F299/02; C08F299/06; C08F299/065; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/672
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
64 words
In an ultra violet light polymerizable polyetherurethane composition composed of a dilute alkaline solution dispersible liquid ethylenically unsaturated polyetherurethane and 0.5 to 5.0 parts of a photoinitiator, the improvement comprising adding 0.01 to 0.5 parts of triaryl phosphine to the composition, said composition characterized to yield a printing plate having microdots having a slope which, under magnification, has an appearence essentially of a pyramid.
Claim 2
Dependent Claim
64 words
In an ultra violet light polymerizable polyetherurethane composition composed of a dilute alkaline solution dispersible liquid ethylenically unsaturated polyetherurethane and 0.5 to 5.0 parts of a photoinitiator, the improvement comprising adding 0.01 to 0.5 parts of triaryl phosphine to the composition, said composition characterized to yield a printing plate having microdots having a slope which, under magnification, has an appearence essentially of a pyramid.
Claim 3
Dependent Claim
24 words
The composition of claim 1 wherein the photoinitiator is mono- or di-alkoxy benzoin and where the alkoxy radical contains 1 to 20 carbon atoms.
Claim 4
Dependent Claim
12 words
The composition of claim 1 wherein the triaryl phosphine is triphenyl phosphine.
Claim 5
Dependent Claim
33 words
The composition of claim 1 wherein at least part of the ethylenic unsaturation of the polyetherurethane is derived by reacting a hydroxyl alkyl acrylate or methacrylate with an isocyanate radical of the polyetherurethane.
Claim 6
Dependent Claim
33 words
The composition of claim 2 wherein at least part of the ethylenic unsaturation of the polyetherurethane is derived by reacting a hydroxyl alkyl acrylate or methacrylate with an isocyanate radical of the polyetherurethane.
Claim 7
Dependent Claim
11 words
The composition of claim 1 wherein the composition is water dispersible.
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) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |