IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0776862
(1985-09-16)
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발명자
/ 주소 |
- Sheets Thomas M. (Wysox PA)
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출원인 / 주소 |
- E. I. Du Pont de Nemours and Company (Wilmington DE 02)
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인용정보 |
피인용 횟수 :
67 인용 특허 :
2 |
초록
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Photoimaging composition comprising an admixture of leuco dye, and at least one 2,4,5-triphenylimidazolyl dimer prepared by an oxidative coupling reaction, a reaction product, 2,2′,5-tris-(o-chlorophenyl)-4-(3,4-dimethoxyphenyl)-4′,5′-diphenylbiimidazole, being present in an amount of 0.01 to 90.0%
Photoimaging composition comprising an admixture of leuco dye, and at least one 2,4,5-triphenylimidazolyl dimer prepared by an oxidative coupling reaction, a reaction product, 2,2′,5-tris-(o-chlorophenyl)-4-(3,4-dimethoxyphenyl)-4′,5′-diphenylbiimidazole, being present in an amount of 0.01 to 90.0% by weight based on the weight of solids in the composition. The composition when coated on a support is useful for prepress proofing.
대표청구항
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A photoimaging composition comprising an admixture of 2,4,5-triphenylimidazolyl dimers which are the product of 2-(o-chlorophenyl)-4,5-diphenylimidazole and 2,4-bis-(o-chlorophenyl)-5-[3,4-dimethoxyphenyl]-imidazole by oxidative coupling, a reaction product being 2,2′,5-tris-(o-chlorophenyl)-4-(3,4-
A photoimaging composition comprising an admixture of 2,4,5-triphenylimidazolyl dimers which are the product of 2-(o-chlorophenyl)-4,5-diphenylimidazole and 2,4-bis-(o-chlorophenyl)-5-[3,4-dimethoxyphenyl]-imidazole by oxidative coupling, a reaction product being 2,2′,5-tris-(o-chlorophenyl)-4-(3,4-dimethoxyphenyl)-4′,5′-diphenylbiimidazole, said admixture of dimers being present in an amount ranging from 0.01 to 90.0% by weight based on the weight of solids in the photoimaging composition, and a leuco dye that is oxidizable to dye by the imidazolyl radicals.
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