EP 1517962 A1 20050330 - METHOD FOR PRODUCING DISAZO PIGMENTS
Title (en)
METHOD FOR PRODUCING DISAZO PIGMENTS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON DISAZOPIGMENTEN
Title (fr)
PROCEDE POUR PRODUIRE DES PIGMENTS DISAZOIQUES
Publication
Application
Priority
- DE 10227527 A 20020620
- EP 0305520 W 20030527
Abstract (en)
[origin: WO2004000947A1] The invention relates to a method for the production of disazo pigments of general formula (I) or a mixture of said disazo pigments by means of azocoupling, wherein R<1> and R<2> are the same or different and represent hydrogen Cl-C4-alkyl, Cl-C4 alkoxy, CI-C5-alkoxycarbonyl, nitro, cyano, halogen, phenoxy or trifluoromethyl; D<1> and D<2> are the same or different and represent an aromatic heterocycle from the group ofbenzimidazole, benzimidazolone, benzimidazolthione, benzoxazole, benzoxazolone, benzothiazolone, indazole, phthalimide, naphthalimide, benzotriazole, chinoline, benzodiazines, phenmorpholine, phenmorpholinone, benzo[c,d]indolone, benzimidazo[1,2-a]pyrimidone, carbazole and indole. The invention is characterised in that the coupling product resulting from the azocoupling is subjected to a finish in an organic solvent with an alkaline pH value or in an aqueous organic solvent with a neutral or alkaline pH value.
IPC 1-7
IPC 8 full level
C09B 67/20 (2006.01); C09B 33/153 (2006.01); C09B 67/10 (2006.01); C09D 17/00 (2006.01)
CPC (source: EP US)
C09B 33/153 (2013.01 - EP US); C09B 67/0015 (2013.01 - EP US)
Citation (search report)
See references of WO 2004000947A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 10227527 A1 20040108; CN 1305971 C 20070321; CN 1662610 A 20050831; EP 1517962 A1 20050330; JP 2005535738 A 20051124; US 2006167236 A1 20060727; US 7262284 B2 20070828; WO 2004000947 A1 20031231
DOCDB simple family (application)
DE 10227527 A 20020620; CN 03814158 A 20030527; EP 0305520 W 20030527; EP 03735467 A 20030527; JP 2004514648 A 20030527; US 51921804 A 20041217