Photosensitive polyaldehydes and use in photoimaging

Details Photosensitive polyaldehydes and use in photoimaging Photosensitive polyaldehydes and use in photoimaging

1977-01-21

1978-08-22

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From aldehyde or derivative thereof as reactant

96 351, 96115R, 20415921, 528239, 528231, C08G 228, C08G 232, C08G 236

Patent

active

041088395

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: 3984378 (1976-10-01), Kubota et al.
patent: 3991033 (1976-11-01), Sam

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