Pigment and method for producing the same
AssigneesDIC Corporation, National Institute of Advanced Industrial Science and Technology
InventorsTakahiko Ootsubo, Hitoshi Sekine, Kouji Nemoto, Atsushi Yamamoto, Ken-ichi Tominaga, Masumi Asakawa, Kazuhiko Sato
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Abstract
A modified pigment having excellent color tone selectivity is provided by laking dye by an environmentally friendly method without using metal. A modified pigment according to the present invention is obtained by laking a dye containing at least one of an acidic group and a basic group with at least one of an amino acid and protein.
Claims12
A modified pigment obtained by laking a dye containing at least one of an acidic group and a basic group with at least one of an amino acid and protein.
A method for producing a modified pigment, comprising allowing a dye containing at least one of an acidic group and a basic group to react with at least one of an amino acid and protein in the presence of a catalyst.
Dependencies are inferred from the claim text.