PROCEDURE FOR OBTAINING photographic images COLOR, TRANSPARENT AND NON-TRANSPARENT, THROUGH DERIVATIVES AS W-CIANACETONA COLORING coupling components, PURPOSE OF THE MAIN Patent No. 165268

摘要

Improvements in the procedure for obtaining photographic images in transparent and non-transparent colors using derivatives of w-cianacetona as coupling components directly or indirectly dye onto the silver image characterized in that are used as generating substances compounds dye the general constitution ** (see formula) ** wherein R represents an optionally substituted radical of any respectively heterocíolicoaromático X forms a heterocyclic aliphatic carbon chain with at least 2 carbon atoms and containing double bonds and / or triple and can be substituted as aliphatic or aromatic.