| 摘要 |
A pressure-sensitive or heat-sensitive recording material which contains as color former at least one tetrahydroquinoline compound of the general formula <IMAGE> wherein EACH OF R1 and R2 represents lower alkyl, cycloalkyl or benzyl or together represent alkylene, and X represents alkyl of at most 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano, lower alkoxy or lower alkoxycarbonyl, or benzyl which is unsubstituted or substituted by halogen, nitro, lower alkyl or lower alkoxy, AND THE RINGS A can be substituted by halogen, nitro, cyano, trifluoromethyl, lower alkyl, lower alkoxy, lower alkoxycarbonyl, phenyloxy, amino, lower alkylamino or N-lower alkylcarbonylamino. |
