C09B43/20 - CPC Classification Index

ClassID:

102274 ⎘

C09B43/20 - CPC Classification

Classification description:

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

Sub-classes:

C09B43/202 » {Aliphatic, cycloaliphatic, araliphatic carboxylic acids} 2
C09B43/204 » {Heterocyclic monocarboxylic acids} 0
C09B43/206 » {with formation of OCXN or OSO2N group} 1
C09B43/208 » {with formation of OCXXH or OCXXR and R being hydrocarbon} 0
C09B43/22 » having the carboxylic group directly attached to an aromatic carbocyclic ring 0

Recent Application in this class:

20090082553

2009-03-26

Polymerizable dye and ophthalmic lens containing the same