Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1991-11-27
1994-01-04
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430570, 430966, 430592, 430593, 430594, 430595, 430572, G03C 110
Patent
active
052759288
ABSTRACT:
A photographic element is described with improved speed in the blue and ultra-violet region of the electromagnetic spectrum. The spectral response of the photographic element is enhanced with at least one dye represented by ##STR1## wherein A.sub.1 and A.sub.2 are hydrogen or taken together represent X--CH.dbd., wherein X is hydrogen, alkyl or substituted alkyl, substituted or unsubstituted five-member heterocyclic ring, substituted or unsubstituted six-member heterocyclic ring, aryl or an aryl substituted by at least one element chosen from the group consisting of alkyl, halogen, aryl, carbonyl, alkoxy, sulfonate, carboxy or triflouralkyl; Y is alkyl, aryl or COR wherein R is OH, NR.sup.2 or OM.sup.+, wherein R2 is hydrogen, alkyl, substituted alkyl, aryl or substituted aryl; wherein M+ is HNR.sup.3.sub.3.sup.+ or a metal cation, wherein R3 is hydrogen, alkyl or substituted alkyl, aryl or substituted aryl; Z is hydrogen, alkyl, substituted alkyl, aryl or substituted aryl.
REFERENCES:
patent: 2241238 (1941-05-01), Brooker et al.
patent: 3445231 (1969-05-01), Nishio et al.
patent: 3615546 (1971-10-01), Deporter et al.
patent: 3627532 (1971-12-01), Depoorter et al.
patent: 3865817 (1975-02-01), Kobayashi et al.
patent: 4225653 (1980-09-01), Brixner
patent: 4311787 (1982-01-01), Lemahieu et al.
patent: 4756995 (1988-07-01), Kojima et al.
patent: 4762769 (1988-08-01), Takahashi et al.
patent: 5028520 (1991-07-01), Ito
patent: 5079134 (1992-01-01), Toya
patent: 5098818 (1992-03-01), Ito et al.
patent: 5108887 (1992-04-01), Fabricius et al.
Bowers Jr. Charles L.
E. I. Du Pont de Nemours and Company
McPherson John A.
LandOfFree
Arylidene sensitizing dyes for tabular grains does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arylidene sensitizing dyes for tabular grains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arylidene sensitizing dyes for tabular grains will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-306229