C09B43/32 - CPC Classification Index

ClassID:

102286 ⎘

C09B43/32 - CPC Classification

Classification description:

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

Sub-classes:

C09B43/325 » {by reacting sulfonic acids with amines} 1
C09B43/34 » by reacting ortho- or peri-dicarboxylic dyes 0
C09B43/36 » with amino-anthracene or amino-anthraquinone dyes 1
C09B43/38 » by reacting two or more ortho-hydroxy naphthoic acid dyes with polyamines 0

Recent Application in this class:

20180074371

2018-03-15

Dye-based polarizer as well as polarizing plate and liquid crystal display device using the polarizer

20170242169

2017-08-24

Dichroic dye compound, polarizing film, and uses thereof

20170003497

2017-01-05

Electrowetting element

20160340367

2016-11-24

Coloring composition, anisotropic light absorption film, laminate, polarizing plate, image display device and compound

20160018716

2016-01-21

Colored pigment particles for electrophoretic displays

20060009626

2006-01-12

Mono- and bis-hydrazone pigments

20050288496

2005-12-29

Mono- and bis-hydrazone pigments

20050288495

2005-12-29

Mono- and bis-hydrazone pigments

20050288494

2005-12-29

Mono- and bis-hydrazone pigments