C09B31/062 - CPC Classification Index

ClassID:

102121 ⎘

C09B31/062 - CPC Classification

Classification description:

Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling; Disazo dyes from a coupling component "C" containing a directive hydroxyl group Phenols

Sub-classes:

C09B31/065 » containing acid groups, e.g. -COH, -SOH, -POH, -OSOH, -OPOH; Salts thereof 1

Recent Application in this class:

20200354576

2020-11-12

DYEING COMPOSITION, DYED PRODUCT, AND AZO COLORING AGENT

20190071571

2019-03-07

COLORING COMPOSITION, DICHROIC DYE COMPOUND, LIGHT ABSORPTION ANISOTROPIC FILM, LAMINATE, AND IMAGE DISPLAY DEVICE

20180346633

2018-12-06

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

20170240810

2017-08-24

Dichroic dye compound, polarizing film, and uses thereof

20160274274

2016-09-22

Composition for forming dye type polarizer and dye type polarizer

20100234494

2010-09-16

Reversibly thermochromic compositions

20090290214

2009-11-26

Dichroic dye for polarization film, composition comprising the same for polarization film, method for forming polarization plate and polarization plate prepared thereby

20070197699

2007-08-23

Novel substituted-polyaryl chromophoric compounds