IPC Subgroup
C09B 43/18 by acylation of hydroxy groups
Introduced: September 1968
Last revised: January 2006
Full Title
Preparation of azo dyes from other azo compounds > by acylation of hydroxy groups
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- Subclass:
- ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES
3 direct subcodes
Child Classifications
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- C09B 43/2 with monocarboxylic acids, carbamic acid esters or halides, monoisocyanates or haloformic acid esters
- C09B 43/24 with formation of —O—SO—R or —O—SOH radicals
- C09B 43/26 with polyfunctional acylating agents