DIFF Subgroup
C09B 43/38 by reacting two or more ortho-hydroxy naphthoic acid dyes with polyamines
Introduced: January 1980
Full Title
Full titles differ between systems:
IPC:
Preparation of azo dyes from other azo compounds > by reacting carboxyl or sulfonic groups, or derivatives thereof, with amines; by reacting keto groups with amines > by reacting two or more ortho-hydroxy naphthoic acid dyes with polyamines
CPC:
Preparation of azo dyes from other azo compounds > by reacting carboxylic or sulfonic groups, or derivatives thereof, with amines; by reacting keto-groups with amines > by reacting two or more ortho-hydroxy naphthoic acid dyes with polyamines
No child classifications to compare. This is a leaf node in both IPC and CPC.