Aromatic diazo compounds and photosensitive compositions using t

Details Aromatic diazo compounds and photosensitive compositions using t Aromatic diazo compounds and photosensitive compositions using t

1991-08-05

1993-04-27

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Diazo or diazonium

430146, 430157, 430171, 430172, 430175, 430302, 534558, 534560, 534562, 534565, 564443, C07C24520, G03C 154, G03F 7016

Patent

active

052063496

ABSTRACT:
An aromatic diazo compound having at least two groups of Formula (I) in the molecule.
This aromatic diazo compound can be handled under visible light free from ultraviolet, is high in photosensitivity, and can be produced by a simple synthesis method.
The diazo compound has a high solubility in organic solvents, appropriate for use as a photosensitive material for a lithographic printing plate, can be easily developed by an alkaline developing solution mainly based on an alkaline aqueous solution, and has a water solubility appropriate for use in a screen printing plate. ##STR1## wherein Z.sup.1 indicates ##STR2## wherein .phi..sup.1 is arylene or substituted arylene; and -.phi..sup.2 is >C.dbd.O, lower alkyl, lower alkylene, or aryl or substituted aryl.

REFERENCES:
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patent: 4581313 (1986-04-01), Minamizono et al.
patent: 4731316 (1988-03-01), Tomiyastt et al.
patent: 4902601 (1990-02-01), Potts et al.

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