| 摘要 |
<p>PCT No. PCT/JP82/00324 Sec. 371 Date Apr. 18, 1983 Sec. 102(e) Date Apr. 18, 1983 PCT Filed Aug. 19, 1982 PCT Pub. No. WO83/00696 PCT Pub. Date Mar. 3, 1983.The electron radiation curable resin of this invention is an oligopolyester-urethane resin having urethane bonds at both terminals of a polyester moiety, or a polyester-polyurethane resin wherein polyester moieties are chain-extended through urethane bonds. The resin has a molecular weight of about 1,000 to 50,000, and has a double bond at each terminal of the molecule and contains in the molecure about 0.2 to 30 mol % of carboxylic acid component having a metal sulfonate group based on the total carboxylic acid component. This electron radiation curable resin is suitable as a binder for a magnetic paint for producing magnetic recording medium such as magnetic tape, and can provide a magnetic recording medium having excellent dispersibility, durability, and solvent resistance.</p> |
