Patent JPS5336478A successfully refreshed from Google Patents.
US4668601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective coating for phototools
Assignee: 3M Co
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Filing: 1986-08-18
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Granted: 1987-05-26
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Expires: 2006-08-18
Abstract
Abstract A radiation-curable composition suitable for use as a protective coating for a photographic element comprises a polymerizable acrylic compound, a polymerizable epoxy-functional silane compound, a free-radical photoinitiator capable of initiating polymerization of said acrylic compound, and 0 to 2 percent of the total composition on a weight basis of a cationic photoinitiator capable of initiating polymerization of said epoxy-functional silane compound, said composition containing epoxy functionality only in a silane compound.
Inventors
- 👤 John F. Kistner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:18
CPC Classifications
G; G03; G03F; G03F1/00; G03F1/38; G03F1/48; Y; Y10; Y10S; Y10S430/00; Y10S430/162
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
85 words
A photographic element comprising: (1) a support, and (2) coated on at least one surface thereof a radiation-cured composition comprising: (a) at least one polymerizable non-silane-containing acrylic compound, (b) at least one polymerizable epoxy-functional silane compound, (c) a free-radical photoinitiator capable of initiating polymerization of said acrylic compound, and (d) optionally, a cationic photoinitiator capable of initiating polymerization of said epoxy-functional silane compound, said composition being solvent-free or containing only ester or ketone solvent and said composition containing epoxy functionality only in a silane compound.
Claim 2
Dependent Claim
85 words
A photographic element comprising: (1) a support, and (2) coated on at least one surface thereof a radiation-cured composition comprising: (a) at least one polymerizable non-silane-containing acrylic compound, (b) at least one polymerizable epoxy-functional silane compound, (c) a free-radical photoinitiator capable of initiating polymerization of said acrylic compound, and (d) optionally, a cationic photoinitiator capable of initiating polymerization of said epoxy-functional silane compound, said composition being solvent-free or containing only ester or ketone solvent and said composition containing epoxy functionality only in a silane compound.
Claim 3
Dependent Claim
13 words
The photographic element according to claim 1 wherein said element is a phototool.
Claim 4
Independent Claim
122 words
A method for providing a protective coating on a diazo phototool comprising (1) coating at least one surface of said diazo phototool element with a radiation-curable composition comprising: (a) at least one polymerizable non-silane-containing acrylic compound, (b) at least one polymerizable epoxy-functional silane compound, (c) a free-radical photoinitiator capable of initiating polymerization of the acrylic compound, and (d) optionally, a cationic photoinitiator capable of initiating polymerization of the epoxy-functional silane compound, said composition being solvent-free or containing only ester or ketone solvent and said composition containing epoxy functionality only in a silane compound; and (2) exposing said coated composition to actinic radiation and effecting cure within 1 minute from the time of initial contact of said coating composition with said phototool surface.
Claim 5
Independent Claim
122 words
A method for providing a protective coating on a diazo phototool comprising (1) coating at least one surface of said diazo phototool element with a radiation-curable composition comprising: (a) at least one polymerizable non-silane-containing acrylic compound, (b) at least one polymerizable epoxy-functional silane compound, (c) a free-radical photoinitiator capable of initiating polymerization of the acrylic compound, and (d) optionally, a cationic photoinitiator capable of initiating polymerization of the epoxy-functional silane compound, said composition being solvent-free or containing only ester or ketone solvent and said composition containing epoxy functionality only in a silane compound; and (2) exposing said coated composition to actinic radiation and effecting cure within 1 minute from the time of initial contact of said coating composition with said phototool surface.
Claim 6
Dependent Claim
17 words
The method according to claim 3 wherein said resulting coated phototool maintains dimensional stability within 0.004 percent.
Claim 7
Dependent Claim
21 words
The method according to claim 3 wherein said coated composition has a thickness in the range of 0.5 to 40 micrometers.
Claim 8
Dependent Claim
18 words
The method according to claim 3 wherein said coated composition has a thickness of 2 to 10 micrometers.
Claim 9
Independent Claim
131 words
A method for providing a protective coating on a diazo phototool comprising (1) coating at least one surface of said diazo phototool with a radiation-curable composition comprising (a) 70 to 92 weight percent of the total composition of at least one polymerizable non-silane-containing acrylic compound, (b) 0.1 to 20 weight percent of the total composition of at least one polymerizable epoxy-functional silane compound, (c) 2 to 10 weight percent of the total composition of a free-radical photoinitiator capable of initiating polymerization of said acrylic compound, and (d) 0 to 2 weight percent of the total composition of a cationic photoinitiator capable of initiating polymerization of said epoxy-functional silane compound, said composition being solvent-free or containing only ester or ketone solvent and said composition containing epoxy functionality only in a silane compound.
Claim 10
Independent Claim
131 words
A method for providing a protective coating on a diazo phototool comprising (1) coating at least one surface of said diazo phototool with a radiation-curable composition comprising (a) 70 to 92 weight percent of the total composition of at least one polymerizable non-silane-containing acrylic compound, (b) 0.1 to 20 weight percent of the total composition of at least one polymerizable epoxy-functional silane compound, (c) 2 to 10 weight percent of the total composition of a free-radical photoinitiator capable of initiating polymerization of said acrylic compound, and (d) 0 to 2 weight percent of the total composition of a cationic photoinitiator capable of initiating polymerization of said epoxy-functional silane compound, said composition being solvent-free or containing only ester or ketone solvent and said composition containing epoxy functionality only in a silane compound.
Claim 11
Dependent Claim
28 words
The method according to claim 7 wherein said acrylic compounds are 2,2-dimethylpropane-1,3-diacrylate and dipentaerythritol hydroxypentaacrylate; said epoxy-functional silane is gamma-glycidoxypropyltrimethoxysilane; and said free-radical photoinitiator is 1-hydroxycyclohexyl phenyl ketone.
Claim 12
Dependent Claim
13 words
The method according to claim 3 wherein said actinic radiation is ultraviolet radiation.
References Cited (Backward Citations)
US3753755A
Cited
US4293606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |