摘要:
PROBLEM TO BE SOLVED: To provide a pigment dispersion which is excellent in coloring characteristics such as coloring power and hue, is excellent in durability such as light resistance and ozone resistance and is excellent in dispersibility, dispersion stability and aging stability. SOLUTION: The pigment composition includes: an azo pigment represented by general formula (1) and a pigment derivative having a hydrophilic group. In the general formula (1), G represents a hydrogen atom, an aliphatic group, an aryl group, a heterocyclic group, an acyl group, an aliphatic oxycarbonyl group, a carbamoyl group, an aliphatic sulfonyl group or an arylsulfonyl group, R 1 represents an amino group, an aliphatic oxy group, an aliphatic group, an aryl group, or a heterocyclic group, R 2 represents a substituent, A represents an aromatic 5- or 6-membered heterocyclic group, m represents an integer of 0 to 5, and n represents an integer of 1 to 4. The general formula (1) has no ionic hydrophilic group. COPYRIGHT: (C)2011,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a dye composition having liquid crystallinity and high dichroism. SOLUTION: The dichroic dye composition has liquid crystallinity and contains at least one azo dye represented by general formula (I), wherein R 1 , R 2 , R 3 , R 4 , X 1 , X 2 are each independently a hydrogen atom or a substituent, A 1 is a phenyl group, a naphthyl group, or an aromatic heterocyclic group which may have a substituent, B 1 is a bivalent aromatic hydrocarbon group or a bivalent aromatic heterocyclic group which may have a substituent, and n is an integer of 1-5, provided that at least one of B 1 is a phenylene group having an alkyl group. COPYRIGHT: (C)2010,JPO&INPIT