Patent US2427198A successfully refreshed from Google Patents.
US4603058A
Expired / Lapsed
US
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Post-treatment of cured, radiation sensitive, polymerizable resins to eliminate surface tack
Assignee: MacDermid Inc
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Filing: 1984-10-05
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Granted: 1986-07-29
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Expires: 2004-10-05
Abstract
Abstract A process is described for eliminating or substantially reducing the surface tack on relief printing plates and the like articles fabricated from radiation-sensitive polymerizable resins, particularly photopolymerizable resin compositions. The process comprises immersing the article, after curing, in an aqueous solution or dispersion comprising a water-soluble or water dispersible ethylenically unsaturated monomer (acrylic, methacrylic acids and derivatives thereof preferred) and optionally a photoinitiator and exposing the immersed plate to actinic radiation.
Inventors
- 👤 William R. Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:36
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/40; Y; Y10; Y10S; Y10S522/00; Y10S522/902; Y10S522/91
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
46 words
A method of removing tack from the surface of a cured radiation-sensitive polymerizable resin composition which comprises the steps of immersing said composition in an aqueous solution comprising a water-dispersible polymerizable ethylenically unsaturated monomer and exposing said composition, while immersed in said solution, to actinic radiation.
Claim 2
Independent Claim
46 words
A method of removing tack from the surface of a cured radiation-sensitive polymerizable resin composition which comprises the steps of immersing said composition in an aqueous solution comprising a water-dispersible polymerizable ethylenically unsaturated monomer and exposing said composition, while immersed in said solution, to actinic radiation.
Claim 3
Dependent Claim
14 words
A method according to claim 1 wherein said aqueous solution also contains a photoinitiator.
Claim 4
Dependent Claim
14 words
A method according to claim 1 wherein said aqueous solution also comprises an amine.
Claim 5
Dependent Claim
14 words
A method according to claim 1 wherein said aqueous solution also comprises a surfactant.
Claim 6
Dependent Claim
34 words
A method according to claim 1 wherein said water-dispersible ethylenically unsaturated monomer comprises at least one member selected from the group consisting of acrylic and methacrylic acids and the salts, amides and esters thereof.
Claim 7
Dependent Claim
15 words
A method according to claim 5 wherein said water-dispersible ethylenically unsaturated monomer is acrylic acid.
Claim 8
Dependent Claim
29 words
A method according to claim 2 wherein said photoinitiator is selected from the group consisting of 2-phenyl-2,2-dimethoxyacetophenone, 2-phenyl-2,2-diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1-(4-dodecylphenyl)-2-hydroxy-2-methylpropan-1-one, 2-ethylanthraquinone, phenanthraquinone, 2-t-butylanthraquinone, 1,2-benz-anthraquinone, α-methylolbenzoin and (4-benzoyl benzyl)trimethyl-ammonium chloride.
Claim 9
Dependent Claim
11 words
A method according to claim 7 wherein said photoinitiator is 2-hydroxy-2-methyl-1-phenylpropan-1-one.
Claim 10
Dependent Claim
33 words
A method according to claim 1 wherein said actinic radiation is a derived from a source which generates light of a wavelength within the range of about 300 nm. to about 400 nm.
Claim 11
Dependent Claim
22 words
A method according to claim 1 wherein said cured radiation-sensitive resin composition is a relief printing plate fabricated from a photopolymerizable resin.
Claim 12
Dependent Claim
32 words
A method according to claim 1 wherein the water-dispersible polymerizable monomer is present in said aqueous solution in an amount within the range of about 1 to about 15 percent by weight.
Claim 13
Dependent Claim
26 words
A method according to claim 11 wherein said monomer is present in an amount within the range of about 2 to about 5 percent by weight.
Claim 14
Dependent Claim
30 words
A method according to claim 2 wherein the photoinitiator is present in said aqueous solution in an amount within the range of about 0.05 to about 5.0 percent by weight.
Claim 15
Dependent Claim
26 words
A method according to claim 13 wherein said photoinitiator is present in an amount within the range of about 0.1 to about 0.5 percent by weight.
Claim 16
Independent Claim
56 words
A method of removing surface tack from a relief printing plate which has been fabricated from a photosensitive polymeric composition, said method comprising the steps of immersing said plate in an aqueous solution comprising a water-dispersible polymerizable ethylenically unsaturated monomer and a photoinitiator; and exposing said plate, while immersed in said aqueous solution, to actinic radiation.
Claim 17
Independent Claim
56 words
A method of removing surface tack from a relief printing plate which has been fabricated from a photosensitive polymeric composition, said method comprising the steps of immersing said plate in an aqueous solution comprising a water-dispersible polymerizable ethylenically unsaturated monomer and a photoinitiator; and exposing said plate, while immersed in said aqueous solution, to actinic radiation.
Claim 18
Dependent Claim
14 words
A method according to claim 15 wherein said aqueous solution also comprises an amine.
Claim 19
Dependent Claim
14 words
A method according to claim 15 wherein said aqueous solution also comprises a surfactant.
Claim 20
Dependent Claim
35 words
A method according to claim 15 wherein said water-dispersible polymerizable ethylenically unsaturated monomer comprises at least one member selected from the group consisting of acrylic and methacrylic acids and the salts, amides and esters thereof.
Claim 21
Dependent Claim
12 words
A method according to claim 18 wherein said monomer is acrylic acid.
Claim 22
Dependent Claim
29 words
A method according to claim 15 wherein said photoinitiator is selected from the group consisting of 2-phenyl-2,2-dimethoxyacetophenone, 2-phenyl-2,2-diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1-(4-dodecylphenyl)-2-hydroxy-2-methylpropan-1-one, 2-ethylanthraquinone, phenanthraquinone, 2-t-butylanthraquinone, 1,2-benz-anthraquinone, α-methylolbenzoin and (4-benzoyl benzyl)trimethyl-ammonium chloride.
Claim 23
Dependent Claim
11 words
A method according to claim 20 wherein said photoinitiator is 2-hydroxy-2-methyl-1-phenylpropan-1-one.
Claim 24
Dependent Claim
35 words
A method according to claim 15 wherein said aqueous solution comprises from about 2 to about 5 percent by weight of acrylic acid and from about 0.01 to about 0.5 percent by weight of 2-hydroxy-2-methyl-1-phenylpropan-1-one.
Claim 25
Dependent Claim
18 words
A relief printing plate free from surface tack and prepared in accordance with the process of claim 15.
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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) | 1989-07-28 | 1990-01-27 | 1990-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-28 | 1994-01-27 | 1994-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-28 | 1998-01-27 | 1998-07-29 | $7700.00 | Window Closed / Lapsed |