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Class Information
Number: 534/747
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Azo > Azo bonded directly to an acylic carbon which is bonded directly to two acyclic carbons, each of which is double or triple bonded to an atom > Two azo groups attached indirectly to each other by nonionic bonding > Each azo group is bonded directly to an acyclic carbon which is bonded directly to two acyclic carbons, each of which is double or triple bonded to an atom > Plural benzene rings bonded directly to each other and are between the azo groups > Each benzene ring is bonded directly to an azo group
Description: Compounds wherein each of the benzene rings is bonded directly to an azo group.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6329531 |
Optical diagnostic agents for diagnosis of neurodegenerative diseases by means of near infrared radiation (NIR radiation) |
Dec. 11, 2001 |
| 6303762 |
Method of producing disazo pigment |
Oct. 16, 2001 |
| 5958128 |
Method of manufacturing a disazo pigment and disazo pigment manufactured thereby |
Sep. 28, 1999 |
| 5489672 |
Process for the production of dis-azo pigment whose amine content is small, and pigment produced by said process |
Feb. 6, 1996 |
| 5194597 |
Preparation of a coupling product of bisiazotized 2,2',5,5'-tetrachloro-4,4'-diaminobiphenyl with two equivalents of n-acetoacetyl-2,4-dimethylanilide |
Mar. 16, 1993 |
| 5051131 |
Azo dispersing agents and azo pigment compositions |
Sep. 24, 1991 |
| 5034063 |
Dispersant-containing disazo pigment composition |
Jul. 23, 1991 |
| 5021090 |
Water-based diarylide pigment compositions |
Jun. 4, 1991 |
| 4981489 |
Disazo compounds and formulations containing same |
Jan. 1, 1991 |
| 4968352 |
Diaryl pigments with improved heat stability and transparency containing coupled mixed bis-diazotized diamines and acid-substituted aromatic amines |
Nov. 6, 1990 |
| 4894094 |
Disazo compounds and formulations containing same |
Jan. 16, 1990 |
| 4801702 |
Process for the preparation and conditioning or organic pigments |
Jan. 31, 1989 |
| 4780533 |
Disazo pigments having improved heat resistance using lower alkyl and phenyl esters of acetoacetanilide |
Oct. 25, 1988 |
| 4767844 |
Azo lake pigments |
Aug. 30, 1988 |
| 4720541 |
Process for improving the application properties of disazo pigments |
Jan. 19, 1988 |
| 4665163 |
Diaryl pigments with improved heat stability obtained by coupling bis-diazotized diamines with acetoacetanilides |
May. 12, 1987 |
| 4664709 |
Azoacylacetamide dispersing agents and azo-pigment compositions |
May. 12, 1987 |
| 4648907 |
High color strength diarylide yellow pigment compositions |
Mar. 10, 1987 |
| 4602960 |
Modified diarylide pigments and their preparation |
Jul. 29, 1986 |
| 4589921 |
Process for improving the application properties of pigment yellow 13 |
May. 20, 1986 |
| 4535151 |
Process for the wet granulation of organic pigments in an aqueous system with hydrolysis of acetic anhydride, propionic anhydride or a mixture thereof |
Aug. 13, 1985 |
| 4515639 |
Azo pigment formulations |
May. 7, 1985 |
| 4468255 |
Rheology modifiers for arylide yellow pigment dispersions and pigment dispersions containing same |
Aug. 28, 1984 |
| 4454067 |
Continuous production of azo pigments |
Jun. 12, 1984 |
| 4341701 |
Production of pigments |
Jul. 27, 1982 |
| 4159264 |
Automatic control of azo coupling processes in the manufacture of azo pigments |
Jun. 26, 1979 |
| 4143034 |
Polyaminomethylated monoazo and disazo colorants |
Mar. 6, 1979 |
| 4124582 |
Process for the purification of azo pigments by stirring an aqueous, alkaline suspension of crude pigment |
Nov. 7, 1978 |
| 4117066 |
Novel process for the complete isolation and rapid drying of solids from suspensions |
Sep. 26, 1978 |
| 4083681 |
Compositions of metal complexes of disazo acid dyes stabilized with amino ethers |
Apr. 11, 1978 |
| 4075198 |
Process for manufacture of benzidine pigments |
Feb. 21, 1978 |
| 3991044 |
Process for improving lightfastness of an azo pigment by heat treatment |
Nov. 9, 1976 |
| 3974136 |
Modified form of a disazo pigment |
Aug. 10, 1976 |
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