2-(3-METHYLANILINO)-3-METHYL-6-PIPERIDINOFLUORAN AND RECORDING MATERIAL CONTAINING IT

• Main Authors: WADA SAYURI, KUMAGAI YOJIRO, NAWAMOTO SHINZO
• Format: Patent
• Language: English
• Published: 09.10.1995
• Edition: 6
• Subjects: ADHESIVES; CHEMISTRY; COLOUR PRINTING; DYES; LAKES; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; PAINTS; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; STAMPS; TRANSPORTING; TYPEWRITERS

PURPOSE:To obtain a recording material which is excellent in whiteness of surface, storage stability of surface texture, tone of developed color, storage stability of image, etc., by using a specific fluoran compd. as the electron- donating color coupler. CONSTITUTION:A new compd., 2-(3-methylanilino)-3-methyl-6-piperidinofluoran, is used as the electron-donating color coupler for a color-develping recording material based on the color reaction of the coupler with an electron-accepting developer. The compd. is obtd. by the reaction of a benzophenone compd. of formula I with a diphenylamine compd. of formula II (wherein R is H or lower alkyl) in the presence of a dehydrating and condensing agent followed by an alkali treatment. The compd. gives the recording material excellent in whiteness of surface, storage stability of surface texture, tone of developed color, storage stability of image, etc., and is useful as the color coupler for recording materials such as a pressure-sensitive recording material, a thermal recording material, and a reversible thermal recording material.