Magnetic recording material

A magnetic material comprising a non-magnetic substrate having a magnetic recording layer thereon which comprises a finely divided ferromagnetic material dispersed in a binder, said binder comprising:

• 1. a polyurethane resin which comprises a polyester-polyurethane resin;
• 2. a modified alkyd resin having an acid value of not higher than about 15, consisting of about 20 to 50% by weight polycarboxylic acid, about 10 to 30% by weight polyhydric alcohol, and about 20 to 60% by weight modifiers, said modifiers being natural oils selected from the group consisting of soya oil, linseed oil, tung oil, castor oil, dehydrated castor oil, coconut oil, safflower oil, sesame seed oil, fish oil, walnut oil, oiticica oil or cotton seed oil;
• 3. and a polyisocyanate compound, said ferromagnetic powder being employed in a weight ratio of 100:10 to 100:200 to said binder;
• said alkyd resin, said polyurethane resin and said polyisocyanate compound being employed in weight ratios of about 90:10 to 10:90 for said alkyd resin to said polyurethane resin, and about 95:5 to 60:40 for the sum of the weight of said alkyd resin and said polyurethane resin to said polyisocyanate compound.