Light-sensitive mixture based on o-naphthoquinone diazides...

Details Light-sensitive mixture based on o-naphthoquinone diazides... Light-sensitive mixture based on o-naphthoquinone diazides...

G - Physics

03

C

96/165, 96/189

G03C 1/52 (2006.01) C08G 8/32 (2006.01) G03F 7/023 (2006.01)

Patent

CA 1214676

- 23 - ABSTRACT OF THE DISCLOSURE A light-sensitive mixture is described, which contains, as the light-sensitive compound, a 1,2-naphthoquinone-2-diazidesulfonic acid ester of the general formula I Image (I) in which R and R' denote hydrogen atoms or lower alkyl groups, X denotes a saturated alkylene, hydroxyalkylene or dihydroxyalkylene group having 6 to 18 carbon atoms, D denotes the 1,2-naphthoquinone-2-diazide-5- sulfonyl radical or the 1,2-naphthoquinone-2-diazide- 4-sulfonyl radical and n denotes a number from 1 to 20. The new quinone diazides produce printing plates which are capable of long printing runs and have good resistance to developer and good flexibility of the printing stencil.

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