Improvements introduced in the object of the main patent, num. 447,947, granted 12-7-77, by: procedure for the production of stable concentrate solutions of basic colorants. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in the object of the main patent No. 447,947, granted on July 12, 1977, for: procedure for the production of stable concentrated solutions of basic dyes, of general formula: ** (formula) ** in which it represents: R the remaining component part of a 5- or 6-membered heterocyclic ring, R1 an alkyl, alkenyl, cycloalkyl, aralkyl or aryl radical, optionally substituted, R3 an alkyl radical and A an aromatic or heterocyclic radical. (Machine-translation by Google Translate, not legally binding)