摘要:
Verfahren zur Halogenierung von polycyclischen Küpenfarbstoffen oder deren polycyclischen Vorprodukten mit Chlor oder Brom als Halogenierungsmittel in Gegenwart eines verdünnungsmittels bei einer Temperatur von 123 bis 200°C, wobei man geschmolzene Benzoesäure als Verdünnungsmittel verwendet.
摘要:
A process for producing 1-aminoanthraquinones represented by formula (C) wherein R¹ and R², independently from each other, denote one type selected from a hydrogen atom, an alkyl group having 1 to 4 carbon atoms and a halogen atom, which comprises converting 5-nitro-1,4,4a,9a-tetrahydroanthraquinones represented by formula (A) wherein R¹ and R² are as defined above, into 1-hydroxylaminoanthraquinones represented by formula (B) wherein R¹ and R² are as defined above, in the presence of a basic compound, and electrolytically reducing the resulting 1-hydroxylaminoanthraquinones in the presence of a basic compound.
摘要:
A process for producing 1-aminoanthraquinones represented by formula (C) wherein R¹ and R², independently from each other, denote one type selected from a hydrogen atom, an alkyl group having 1 to 4 carbon atoms and a halogen atom, which comprises converting 5-nitro-1,4,4a,9a-tetrahydroanthraquinones represented by formula (A) wherein R¹ and R² are as defined above, into 1-hydroxylaminoanthraquinones represented by formula (B) wherein R¹ and R² are as defined above, in the presence of a basic compound, and electrolytically reducing the resulting 1-hydroxylaminoanthraquinones in the presence of a basic compound.
摘要:
New dichroic dyes having a composition with slave materials. The dyes may be used for a dichroic polymer network, a dichroic liquid crystalline polymer film (LCP film) or a dichroic liquid crystalline polymer gel, which for instance find application as electro-optical or optical devices.
摘要:
To provide a pigment composition and colorant composition which have superior disperse ability and provide a coated film having high contrast when it is used for a color filter is an object of the invention. A pigment composition for color filter obtainable by dissolving C.I. Pigment Red 177 and a pigment derivative having specific formula in sulfuric acid, subsequently mixing the solution with water to induce precipitation and removing acidic components, and a colored composition for a color filter in which the pigment composition is dispersed in a pigment carrier of a transparent resin, the derivatives thereof, or the mixture thereof.
摘要:
Verfahren zur Herstellung von 4,4′-Diamino-1,1′-dianthrachinonyl-Pigmenten durch Desulfonierung von 4,4′-Diamino-1,1′-dianthrachinonyl-3,3′-disulfonsäure in Schwefelsäure, dadurch gekennzeichnet, daß man nach der Desulfonierung die schwefelsaure Lösung mit Wasser versetzt, das 4,4′-Diamino-1,1′-dianthrachinonyl als Sulfat isoliert man das Sulfat, gegebenenfalls durch erneutes Lösen in Schwefelsäure und Austragen auf Wasser, hydrolysiert, und man das Pigment, gegebenenfalls nach Behandlung mit einem organischen Lösungsmittel, isoliert.
摘要:
Verfahren zur Herstellung von 1,4-Diaminoanthrachinon-2- carbonsäure, dadurch gekennzeichnet, daß man 1-Nitroan- thrachinon-2-carbonsäure oder -carbonsäurederivate mit Hydroxylamin oder Hydroxylaminderivaten in Alkohol-Wasser-Mischungen bei basischen pH-Werten umsetzt.