IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0184606
(1980-09-05)
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발명자
/ 주소 |
- Specht Donald P. (Rochester NY) Houle Conrad G. (Webster NY) Farid Samir Y. (Rochester NY)
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출원인 / 주소 |
- Eastman Kodak Company (Rochester NY 02)
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인용정보 |
피인용 횟수 :
73 인용 특허 :
4 |
초록
▼
A photopolymerizable composition, element and method of photopolymerizing the composition or element are disclosed wherein the composition comprises an addition polymerizable compound containing ethylenic unsaturation and a co-initiator including a photopolymerization activator and a photosensitizer
A photopolymerizable composition, element and method of photopolymerizing the composition or element are disclosed wherein the composition comprises an addition polymerizable compound containing ethylenic unsaturation and a co-initiator including a photopolymerization activator and a photosensitizer. In one aspect of the invention, the photosensitizer is selected to be a coumarin having an absorption maximum between about 250 and about 550 nm, and a [Figure] substituent in the 3-position wherein R1 is alkyl or alkenyl having 1-12 carbon atoms, or a carbocyclic or heterocyclic group having 5-20 nuclear carbon and hetero atoms, the coumarin and the activator being present in an amount sufficient to provide, when the composition is coated, dried and exposed to a medium-pressure mercury light source, a speed which is at least about one-fifth that of the same composition coated, dried and exposed identically except with a co-initiator consisting of Michler\s ketone and benzophenone. In another aspect of the invention, the activator is selected to have the structure: [Figure] wherein: J is -O-, -S- or a carbon-to-carbon bond; J1, J2, and J3 are each independently hydrogen; alkyl, alkoxy, or alkylthio having from 1 to 5 carbon atoms; aryloxy having from 6 to 10 carbon atoms; halogen; or any two of J1, J2, and J3 taken together comprise the atoms necessary to complete a 5- or 6-membered fused heterocyclic or aromatic ring; and Z is the number of atoms necessary to complete a heterocyclic or aromatic ring of from 4 to 6 ring atoms.
대표청구항
▼
In a photopolymerizable composition comprising an addition-polymerizable compound containing ethylenic unsaturation, and a co-initiator composition comprising a carbonyl compound and a photopolymerization activator responsive in the presence of the photo-excited form of said carbonyl compound to for
In a photopolymerizable composition comprising an addition-polymerizable compound containing ethylenic unsaturation, and a co-initiator composition comprising a carbonyl compound and a photopolymerization activator responsive in the presence of the photo-excited form of said carbonyl compound to form a free radical, said activator being selected from the group consisting of an amine other than a 3-ketocoumarin, an acetic acid derivative, a phosphine, a phosphite, a bismuthine, an arsine, a stibine, a sulfinic acid, a sulfinic acid ester, a sulfone, a dicarbonyl, a ketone, a bi-imidazole, and a stannate; the improvement wherein said carbonyl compound is a coumarin having an absorption maximum between about 250 and about 550 nm and a [Figure] substituent in the 3-position, wherein R1 is alkyl or alkenyl having 1 to about 12 carbon atoms, or a carbo-cyclic or heterocyclic group having about 5 to about 20 nuclear carbon and hetero atoms, said coumarin and said activator being present in an amount sufficient to provide, when the composition is coated, dried and exposed to a medium-pressure mercury light source, a speed which is at least about one-fifth that of the same composition coated, dried and exposed identically except with a co-initiator consisting of Michler\s ketone and benzophenone.
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