| abstract |
THE EMULSION CONTAINS AT LEAST ONE COMPOUN OF THE FORMULA S=C<(-N(-R1)-CO-C(=P)-X-) WHEREIN P IS 1-R2-PYRID-2(1H)-YLIDENE OR 1-R3-PYRID-4(1H)-YLIDENE R2 AND R3 ARE INDIVIDUALLY AN ALKYL GROUP; X IS S, O, N, OR N-R WHEREIN R IS HYDROGEN, AN ALKYL GROUP OR A LOWER ALKYL GROUP; AND R1 IS AN ALKYL, ALLYL OR ARYL GROUP IN COMBINATION WITH AT LEAST ONE COMPOUND OF THE FORMULA 1-R5,2-(S=),3-R6,4-(O=),5-(3-R4,Z1,Z2-BENZOXAZOL-2(3H)- YLIDENE)=CH-CH=)IMIDAZOLIDINE WHERE R4 IS AN ALKYL GROUP; R5 AND R6 ARE INDIVIDUALLY AN ALKYL OR ARYL GROUP; AND Z1 AND Z2 ARE INDIVIDUALLY A HYDROGEN OR HALOGEN ATOM OR AN ALKYL, ALKOXY OR ARYL GROUP, SAID Z1 AND Z2 MAY LINK TO EACH OTHER TO FORM A BENZENE RING. THE EMULSION WHEN SUBJECTED TO SUPERSENSITIZATION DISPLAYS IDEAL COLOR SENSITIVITY. |