Carbonless pressure-sensitive copying paper
Chromogenic phthalides
Color former mixture
Color-forming compounds and use thereof in imaging members...
Coloring phthalide compounds and recording materials using the c
Coloring phthalide compounds, method of producing the compounds
Compound for color-producing composition, and recording...
Crystal modification of 2-(3-methylanilion)-3-methyl-6-diethylam
Crystal modifications of 2-m-toluidino-3-methyl-6-di-n-butylamin
Crystalline fluoran compound
Crystals of fluoran compound, crystalline solvates thereof, proc