| 摘要 |
PURPOSE:To obtain thermal recording paper having color forming sensitivity suitable to high speed recording and excellent in preservability by incorporating 1, 5-diisopropylnaphthalene in a thermal color forming recording layer alone as a sensitizer or incorporating the same along with a specific aromatic compound. CONSTITUTION:1, 5-diisopropylnaphthalene is contained in a thermal color forming recording layer as a sensitizer alone or along with 3 - 30% by wt. of said sensitizer of an aromatic compound with an m.p. of 60 - 110 deg.C. 1, 5- diisopropylnaphthalene is one of position isomers of DIPN usually obtained by reacting naphthalene with propylene and has an m.p. of 105 deg.C. As the aromatic compound with an m.p. of 60 - 110 deg.C, benzyl, 2, 6-DIPN, acetoacetic ortho-toluidide, m-terphenyl or beta-naphthylbenzyl ether can be designated. |
