摘要:
Use of 4,4''-diamino-1,1''-dianthraquinonyl, naphthofuran-diones, quinophthalones and phthalimidopyrazolones in the photoelectrophoretic production of images.
AND ((3-R3,4-((-A-NH-)>C=),5-(O=)-2-PYRAZOLIN-1-YL)-
CO-NH)2-R
IN WHICH A REPRESENTS A HETERCYCLIC RING FUSED TO AT LEAST ONE BENZENE RING, R REPRESENTS A DIRECT BOND OR AN ORGANIC RESIDUE, R1 REPRESENTS A HYDROGEN ATOM, OR AN ALKYL OR ARYL GROUP, R3 REPRESENTS AN ALKYLENE OR ARYLENE RESIDUE AND R3 REPRESENTS AN ALKYL OR CARBOXYLIC ACID ESTER GROUP, ARE VALUABLE PIGMENTS COLORING PLASTICS AND LACQUERS IN FAST YELLOW TO RED SHADES.