Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1988-08-31
1989-10-31
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430623, 430631, 430638, 530354, G03C 130
Patent
active
048777242
ABSTRACT:
A method for hardening gelatin comprising combining the gelatin to be hardened with a compound of the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, and X.sup..THETA. are as herein defined. The compounds of this formula effectively harden gelatin with little or no after-hardening. These compounds are useful in hardening gelatin in photographic elements.
REFERENCES:
patent: 3947274 (1976-03-01), Mikawa et al.
patent: 4013468 (1977-03-01), Bergthaller et al.
patent: 4119464 (1978-10-01), Sauerteig et al.
patent: 4421847 (1983-12-01), Jung et al.
patent: 4612280 (1986-09-01), Okamura et al.
Journal of the American Chemical Society, 103, 4837-45 (1981).
Chem. Ber., 119, 3276-97 (1986).
Chapman Derek D.
Chen Chung Y.
Harbison Kenneth G.
Riecke Edgar E.
Buscher Mark R.
Eastman Kodak Company
Marshall Paul L.
Michl Paul R.
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