Light sensitive diazonium compounds having both bisulfate and zi

Details Light sensitive diazonium compounds having both bisulfate and zi Light sensitive diazonium compounds having both bisulfate and zi

1996-07-02

1997-11-18

Young, Christopher G.

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

Composition or product which contains radiation sensitive...

430169, 430175, 430176, 4302721, 4302781, 534561, 534563, G03F 7021

Patent

active

056886276

ABSTRACT:
A water soluble diazonium salt composition made by the condensation of diazoaryl amines and aldehydes and precipitated to form a polymeric anionic species having both ZnCl.sub.4.sup.= and HSO.sub.4.sup.- moieties. These composition are blended with suitable binders, colorants and other optional components to produce light sensitive coating compositions. When applied to aluminum substrates, these light sensitive coating compositions form lithographic printing plates that are especially stable under high humidity conditions. Such plates may be developed by either water alone or by water which contains surfactants and/or a small amount of an organic solvent.

REFERENCES:
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patent: 4288520 (1981-09-01), Sprintschnik et al.
patent: 4522910 (1985-06-01), Hallman
patent: 4568628 (1986-02-01), Eklund
patent: 5308735 (1994-05-01), Kanda et al.

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