摘要 |
PURPOSE:To improve electromagnetic conversion characteristics and traveling property from low temp. to high temp. by incorporating a specified acyloin compd. into a magnetic layer. CONSTITUTION:The magnetic recording medium has a magnetic layer comprising a ferromagnetic powder dispersed in a binder, formed on a nonmagnetic supporting body, and acyloin compd. expressed by formula I is incorporated into the magnetic layer. Thereby, the obtd. medium has higher electromagnetic conversion characteristics and traveling property from low temp. to high temp. In formula, one of R1 and R2 is a satd. or unsatd. chain aliphatic hydrocarbon group of 9 - 23 carbon number, and the other is a satd. or unsatd. chain aliphatic hydrocarbon group of 5 - 23 carbon number. |