| abstract |
1. A THERMAL RECORDING SHEET WHICH CONTAINS THE PHENOL COMPOUND HAVING THE FORMULA HO-(1,4-PHENYLENE)-C(-CH3)(-C5H11-N)-(1,4-PHENYLENE)-OH AT LEAST ONE ORDINARILY COLORLESS OR LIGHT-COLORED LACTONE COMPOUND CAPABLE OF REACTING WITH SAID PHENOL COMPOUND UPON HEATING TO FORM A COLOR, AND A BINDER, THE PROPORTIONS OF PHENOL COMPOUND, LACTONE COMPOUND AND BINDER BEING 1-30% BY WEIGHT OF THE LACTONE COMPOUND, 45- 94% BY WEIGHT OF THE PHENOL COMPOUND AND 4-40% BY WEIGHT OF A BINDER, EXPRESSED BY DRY WEIGHT PERCENTAGE. |