| 摘要 |
PURPOSE:To improve coloring properties by incorporating specific fluoran derivative, electron acceptive compound and ether derivative as electron donative achromatic dye. CONSTITUTION:Electron donative achromatic dye includes, for example, anilino group having a substituted group at the 2-position, fluoran derivative having N-alkoxyalkylamino group at the 6-position, electron acceptive compound and ether derivative. The fluoran derivative includes, for example, 2-anilino-3- methyl-6-N-ethyl-N-gamma-ethoxypropylaminofluoran, 2-anilino-3-methyl-6-N-methyl- N-gamma-ethoxypropylaminofluoran, etc. The ether derivative includes, for example, 2-benzyloxynaphthalene, 1-benzyloxynaphthalene, etc. The electron acceptive compound includes, for example, phenol derivative, salicylate derivative, aromatic metal carboxylate, etc. |
