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Sandoz AG
Original Assignee
Sandoz AG
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Publication date
Application filed by Sandoz AGfiledCriticalSandoz AG
Priority to ES9002027ApriorityCriticalpatent/ES2021558A6/en
Publication of ES2021558A6publicationCriticalpatent/ES2021558A6/en
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
Process for the preparation of cationic phthalocyanine dyes of formula I in which the symbols are defined as in the description. Comprises reacting two compounds of formula II with one compound donating "Y" to quaternise the -NR5R6 group of each compound II. The compound so obtained and their mixtures are used for the dyeing or printing of organic substrates containing hydroxy or nitrogen groups.
ES9002027A1990-07-271990-07-27Process for the preparation of cationic phthalocyanine dyes
Expired - LifetimeES2021558A6
(en)