| 摘要 |
PURPOSE:To enhance the dispersibility, surface smoothness and durability by forming the magnetic layer using a binder consisting essentially of polyurethane resin and specified isocyanate compounds. CONSTITUTION:A magnetic layer for magnetic recording is formed using a binder consisting of polyurethane resin having about 1,000-10,000mol.wt., an isocyanate compound having <2 isocyanate groups, and an isocyanate compound having >=2 isocyanate groups such as 2,4-tolylene diisocyanate or further contg. vinyl chloride-vinyl acetate copolymer or other resin. |
