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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
C09B 43/20

with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters

Introduced: January 1980

Title

Titles differ between systems:

IPC: with monocarboxylic acids, carbamic acid esters or halides, monoisocyanates or haloformic acid esters

CPC: with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters

Full Title

Full titles differ between systems:

IPC:

Preparation of azo dyes from other azo compounds > by acylation of hydroxy groups > with monocarboxylic acids, carbamic acid esters or halides, monoisocyanates or haloformic acid esters

CPC:

Preparation of azo dyes from other azo compounds > by acylation of hydroxyl group > with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters

CPC subdivides this area 5x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

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