Light-sensitive compositions and light-sensitive materials with

Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...

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430176, 430190, 430192, 430197, 430270, 430281, 430286, 430287, 430302, G03C 160, G03C 168, G03C 1495

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active

048429830

ABSTRACT:
A light-sensitive composition comprising a phenolic resol wherein the ratio of the number of dibenzylic ether linkages to the total number of dibenzylic ether, methylene and methylol linkages linked to phenolic nucleus is 15 mol. % or more and which is obtained by a reaction between a phenol of the formul (I): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 may be the same or different and represent hydrogen, halogen, hydroxyl, nitro, alkyl, alkoxy, phenyl, or substituted phenyl, and an aldehyde or ketone.
A light-sensitive composition comprising a condensate of the phenolic resol and an o-quinone diazido sulfonylhalide.
A light-sensitive material comprising the above-mentioned composition.
A method for making a planographic printing plate from the light-sensitive material, characterized in that burning-in process is carried out at a lower temperature or a shortened time.

REFERENCES:
patent: 3485797 (1969-12-01), Robins
patent: 3635709 (1972-01-01), Kobayashi
patent: 3666473 (1972-05-01), Colom et al.
patent: 3676392 (1972-07-01), Robins
patent: 4079031 (1978-03-01), Sardessai et al.
patent: 4536464 (1985-08-01), Nagashima et al.
patent: 4612254 (1986-09-01), Ginter et al.

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