| 摘要 |
PURPOSE:To obtain a medium excellent in running and electric performance and good in stability of magnetic paint for storage, and not requiring heat processing, by including higher fatty acid and higher fatty acid ester in a magnetic substance layer cured with the irradiation of electron rays. CONSTITUTION:In a magnetic substance cured with electron rays including a chemical compound possible for polymerization through electron rays with a chemical compound having acryloyl and methacryloyl groups at both ends of straight chain and a ferromagnetic powder, a higher fatty acid expressed by a general formula R1CO2H (where; R1 is alkyl or alkenyl having 11-23 carbon atoms) and a higher fatty acid ester expressed by a general formula R2CO2R3 (where; R2 is alkyl or alkenyl having 11-23 carbon atoms and R3 is alkyl having 2-6 of carbon atoms or substituted alkyl having 4-10 carbon atoms), are added during the adjustment of coating liquid, or coated or sprayed on the magnetic substance layer after drying, smoothing or curing with electron rays. |
