C09B43/136 - CPC Classification

Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents

• C09B43/14 » with phosgene or thiophosgene 0
• C09B43/145 » with polycarboxylic acids 0
• C09B43/155 » with di- or poly-isocyanates 0
• C09B43/16 » linking amino-azo or cyanuric acid residues 38