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US 8,771,925 B2Granted
Flexographic processing solution and method of use
AssigneeEastman Kodak Company
InventorsElsie A. Fohrenkamm, M. Zaki Ali, Michael B. Heller
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Abstract
A processing solution is used to provide flexographic relief printing plates. This solution includes diisopropylbenzene, and one or more organic co-solvents, at least one of which is an aliphatic dibasic acid ester. The processing solution may also include one or more alcohols as co-solvents.
Claims14
A method for providing a flexographic printing plate comprising:
- A) imagewise exposing a flexographic printing plate precursor comprising a photopolymerizable elastomeric layer comprising a photopolymerizable composition to curing radiation to provide exposed cured regions and non-exposed non-cured regions in the photopolymerizable elastomeric layer,
- B) removing the non-exposed non-cured regions from the photopolymerizable elastomeric layer with a processing solution to provide a relief image in the photopolymerizable elastomeric layer, resulting in a flexographic printing plate, the processing solution comprising 1) diisopropylbenzene, and 2) one or more organic co-solvents, at least one of which is an aliphatic dibasic acid ester, and
- C) optionally, drying the processed flexographic printing plate,
- wherein the aliphatic dibasic acid ester is dimethyl-2-methylglutarate or diisobutyl methylglurarate, and
- the processing solution further comprises one or more alcohols that are chosen from n-butanol, 2-ethoxyethanol, benzyl alcohol, a hexyl alcohol, a heptyl alcohol, an octyl alcohol, a nonyl alcohol, a decyl alcohol, 2-phenylethyl alcohol, isopronylbenzyl alcohol, alpha-terpineol, dipropylene glycol methyl ether, 2-butoxyethanol, isopropyl alcohol, and 2-(2-butoxyethoxy) ethanol, substituted or unsubstituted cyclopentanol, substituted or unsubstituted cyclohexanol, substituted or unsubstituted cycloheptanol, cyclopentyl substituted alcohol, cyclohexyl substituted alcohol, and cycloheptyl substituted alcohol.
2 more elements
A method for providing a flexographic printing plate comprising:
- A) imagewise exposing a flexographic printing plate precursor comprising a photopolymerizable elastomeric layer comprising a photopolymerizable composition to curing radiation to provide exposed cured regions and non-exposed non-cured regions in the photopolymerizable elastomeric layer,
- B) removing the non-exposed non-cured regions from the photopolymerizable elastomeric layer with a processing solution to provide a relief image in the photopolymerizable elastomeric layer, resulting in a flexographic printing plate, and
- C) optionally, drying the processed flexographic printing plate, wherein the processing solution comprises:
- from about 30 to about 80 weight % of diisopropylbenzene,
- from about 10 to about 60 weight % of dimethyl-2-methylglutarate, and
- from about 5 to about 35 weight % of one or more alcohols selected from the group consisting of benzyl alcohol, 2-ethylhexyl alcohol, 2-phenylethyl alcohol, and isopropylbenzyl alcohol, and
- and the weight ratio of diisopropylbenzene to dimethyl-2-methylglutarate is from about 1:9 to about 3:2.
4 more elements
A method for providing a flexographic printing plate comprising:
- A) imagewise exposing a flexographic printing plate precursor comprising a photopolymerizable elastomeric layer comprising a photopolymerizable composition to curing radiation to provide exposed cured regions and non-exposed non-cured regions in the photopolymerizable elastomeric layer,
- B) removing the non-exposed non-cured regions from the photopolymerizable elastomeric layer with a processing solution to provide a relief image in the photopolymerizable elastomeric layer, resulting in a flexographic printing plate, the processing solution consisting essentially of 1) diisopropylbenzene, and 2) one or more aliphatic dibasic acid esters, and
- C) optionally, drying the processed flexographic printing plate.
Dependencies are inferred from the claim text.