Photosensitive article having polyaldehydes and its use in photo

Details Photosensitive article having polyaldehydes and its use in photo Photosensitive article having polyaldehydes and its use in photo

1977-10-06

1979-04-24

Brammer, Jack P.

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

96 87R, 96115R, G03C 500, G03C 168, G03C 178

Patent

active

041509897

ABSTRACT:
Photosensitive polyaldehydes are provided which have the formula: ##STR1## wherein R is a photosensitive end group selected from ##STR2## R.sup.1 is H or n-alkyl of 1-5 carbon atoms, preferably H, R.sup.2 is (a) n-alkanoyl of 1-4 carbon atoms or (b) n-alkanoyl of 1-4 carbon atoms or ##STR3## when R.sup.1 is H, and N IS A POSITIVE INTEGER OF ABOUT 10-4000.
The polyaldehydes are prepared by the anionic polymerization of the appropriate aldehyde with an initiating amount of an alkali metal or tetraalkylammonium alkoxide of RO in the above formula.
The polyaldehydes are useful in articles and methods of relief imaging and in lithographic plates.

REFERENCES:
patent: 3849137 (1974-11-01), Barzynski et al.
patent: 3913514 (1975-12-01), Marsh
patent: 3915704 (1975-10-01), Limburg et al.
patent: 3984378 (1976-10-01), Kabota et al.
patent: 3991033 (1976-11-01), Sam

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