Quaternary nitrogen-containing polymers and articles including s

Details Quaternary nitrogen-containing polymers and articles including s Quaternary nitrogen-containing polymers and articles including s

1983-05-09

1984-06-05

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430221, 430517, 428483, 428500, 428522, 5253271, 525916, 526265, G03C 184, G03C 554, G03C 140, C08F 2606

Patent

active

044528787

ABSTRACT:
A class of quaternary nitrogen-containing polymeric materials, which upon contact with alkali provide substantial light-absorbing or opacifying properties, is disclosed. The polymeric materials comprise repeating units of the formula: ##STR1## wherein the cyclic quaternary nitrogen-containing moiety is a 2-, 3-, or 4-pyridinium moiety; R.sup.1 and R.sup.2 are independently hydrogen, alkyl, substituted alkyl, cycloalkyl, aryl, aralkyl, alkaryl, halo, or R.sup.1 and R.sup.2 together comprise the atoms necessary to complete a six-membered, substituted or unsubstituted benzenoid ring; R.sup.3 is hydrogen or alkyl; X is an anion; and Y is hydrogen, alkyl, substituted alkyl, cycloalkyl, aryl, aralkyl, alkaryl or halo.

REFERENCES:
patent: 3752692 (1973-08-01), Young
patent: 3758445 (1973-09-01), Cohen et al.
patent: 3794485 (1974-02-01), Bloom et al.
patent: 4312940 (1982-01-01), Nakamura et al.
patent: 4316972 (1982-02-01), Petrak
Nour et al., "Pyridinium Compounds . . . Sodium Hydroxide," J. Chem. Soc. (c), 1969, pp. 2511-2513.

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