| abstract |
Provided is a magnetic recording medium having a backcoat layer having a low coefficient of friction with wear resistance, heat resistance, blocking resistance, conductivity, and a component constituting a tape, such as a guide roll. 80 mol% or more of a polycarboxylic acid component is an aromatic dibasic acid and / or alicyclic dibasic acid, and 50 mol% or more of a polyol component has a side chain and has 3 or more carbon atoms. Polyester polyol (A) that is glycol, aromatic polyisocyanate (B), and compound (C) having a side chain with a molecular weight of less than 1000 having two or more functional groups that react with isocyanate in one molecule, and urethane The present invention relates to a coating agent comprising a polyurethane resin having a base concentration of 2800 to 4200 eq / t and a carbon-based powder. [Selection figure] None |