Patent EP0021829A2 successfully refreshed from Google Patents.
EP0021829A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Elastomeric printing plate and preparative process therefor
Assignee: Cessione uniroyal Plastics Co Inc
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Filing: 1980-06-25
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Granted: —
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Expires: 2000-06-25
Abstract
Abstract An elastomeric article suitable for flexographic printing comprising an elastomeric natural or synthetic dienoid polymer or copolymer, a photopolymerizable, ethylenically unsaturated cross-linking agent and a photoinitiator, portions of said article having been exposed to a photopolymerizable- effective amount of actinic radiation through an image bearing transparency having clear and opaque areas, and processed to remove the soluble portion of said plate situated beneath the opaque areas of the transparency during exposure, and said processed plate having been treated with iodine so as to render its printing surface tack-free and resistant to hardening when further exposed to actinic radiation.
Inventors
- 👤 Nancy S. Mariotti
- 👤 Milton Farber
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 12:36
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/40; G03F7/405; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/128
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
66 words
An elastomeric article suitable for printing characterised in that it comprises (A) an insolubilized natural or synthetic conjugated diolefin hydrocarbon homopolymer or copolymer (B) between about 5 and 50 phr of a photopolymerized crosslinking agent derived from a photopolymerizable ethylenically unsaturated compound and (C) between about 0.1 and 5 phr of a photoinitiator activatable by actinic radiation, said elastomeric article containing a detackifying amount of iodine.
Claim 2
Dependent Claim
66 words
An elastomeric article suitable for printing characterised in that it comprises (A) an insolubilized natural or synthetic conjugated diolefin hydrocarbon homopolymer or copolymer (B) between about 5 and 50 phr of a photopolymerized crosslinking agent derived from a photopolymerizable ethylenically unsaturated compound and (C) between about 0.1 and 5 phr of a photoinitiator activatable by actinic radiation, said elastomeric article containing a detackifying amount of iodine.
Claim 3
Dependent Claim
29 words
An elastomeric article according to claim 1 characterised in that the article contains between about 1% and about 15% (based upon the weight of the article) of combined iodine.
Claim 4
Dependent Claim
54 words
An elastomeric article according to claim 1 or claim 2 characterised in that (A) is a polymer selected from 1,4-polybutadiene and 1,2-polybutadiene, butadiene-acrylonitrile, butadiene-styrene, styrene-butadiene-styrene block and styrene-isoprene-styrene block, a copolymer selected from a butadiene-acrylonitrile, butadiene-styrene, and a block copolymer of butadiene or isoprene with styrene, or a homopolymer selected from 1,4-polybutadiene and 1,2-polybutadiene.
Claim 5
Dependent Claim
23 words
An elastomeric article according to any of claims 1 to 3 characterised in that a butadiene-acrylonitrile copolymer containing 2-50% by weight of acrylonitrile.
Claim 6
Dependent Claim
25 words
An elastomeric article according to any of claims 1 to 3 characterised in that (A) is a butadiene-acrylonitrile copolymer containing 20-40% by weight of acrylonitrile.
Claim 7
Dependent Claim
26 words
An elastomeric article according to any of claims 1 to 3 characterised in that (A) is a butadiene-styrene copolymer containing 21-45% by weight of copolymerized styrene.
Claim 8
Dependent Claim
27 words
An elastomeric article according to any of claims 1 to 3 characterised in that (A) is a styrene-butadiene-styrene block copolymer containing 10-40% by weight of copolymerized styrene.
Claim 9
Dependent Claim
27 words
An elastomeric article according to any of claims 1 to 3 characterised in that (A) is a styrene-isoprene-styrene block copolymer containing 10-40% by weight of copolymerized styrene.
Claim 10
Dependent Claim
26 words
An elastomeric article according to any of claims 1 to 8 characterised in that (B) is derived from an ester of acrylic acid or methacrylic acid.
Claim 11
Dependent Claim
50 words
An elastomeric article as claimed in any of the preceding claims characterised in that (B) is derived from a photopolymerizable ethylenically unsaturated compound selected or derived from ethylene glycol diacrylate, ethylene glycol dimethacrylate, glycol üiethylene glycol diacrylate, diethylene/dimethacrylate, 1,4-butanediol diacrylate, 1,4-butanediol dimethacrylate, 1,6-hexanediol diacrylate, 1,6-hexanediol dimethacrylate, trimethylolpropane-triacrylate and trimethylolpropane trimethacrylate.
Claim 12
Dependent Claim
36 words
An elastomeric article according to any of the preceding claims characterised in that (C) is benzophenone, a C 1 -C 5 alkyl ether of benzoin, benzil, a C 1 -C 5 alkyl monoketal of benzil, 2,2-dimethoxy-2-phenylacetophenone.
Claim 13
Dependent Claim
29 words
An elastomeric article according to claim 1 or claim 2 characterised in that (A) is a butadiene-acrylonitrile, (B) is 5-50 phr trimethylolpropane triacrylate and (C) is 0.1-5 phr benzophenone.
Claim 14
Dependent Claim
40 words
An elastomeric article according to claim 1 or claim 2 characterised in that (A) is a styrene-isoprene-styrene block copolymer, (B) is 2.5-25 phr 1,6-hexanediol diacrylate and 2.5-25 phr 1,6-hexanediol dimethacrylate and (C) is 0.1-1 phr 3,5-di-tert-butyl-p-cresol and 1-4 phr 2,2-dimethoxy-2-phenylacetophenone.
Claim 15
Dependent Claim
70 words
A process of detackifying an elastomeric article which is suitable for printing characterised in that the process comprises contacting said article comprising (A) an insolubilized natural or synthetic dienoid homopolymer or copolymer (B) between about 5 and 50 phr of a photopolymerized crosslinking agent compound and (C) between about 0.1 and 5 phr of a photoinitiator activatable by actinic radiation, said elastomeric article containing a detackifying amount of combined iodine.
Claim 16
Dependent Claim
70 words
A process of detackifying an elastomeric article which is suitable for printing characterised in that the process comprises contacting said article comprising (A) an insolubilized natural or synthetic dienoid homopolymer or copolymer (B) between about 5 and 50 phr of a photopolymerized crosslinking agent compound and (C) between about 0.1 and 5 phr of a photoinitiator activatable by actinic radiation, said elastomeric article containing a detackifying amount of combined iodine.
Claim 17
Dependent Claim
30 words
A process according to claim 14 characterised in that said article is contacted with an aqueous iodine in potassium iodide treating solution of between about 0.01 and about 10 normal.
Claim 18
Dependent Claim
30 words
A process according to claim 14 characterised in that said article is contacted with a solution of iodine in a non-aqueous solvent of concentration between 1 and 10 weight percent.
Claim 19
Dependent Claim
14 words
A process according to claim 15 characterised in that said non-aqueous solvent is perchloroethylene.
References Cited (Backward Citations)
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