Magnetic coating composition of partially oxidized nitrocellulose and magnetic powder
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorsTeiichi Ishino, Ikuo Ueda, Rikiya Kai
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Abstract
A magnetic coating composition used for producing magnetic recording media is disclosed. The composition is comprised of partially oxidized nitrocellulose and magnetic fine powder or magnetic metal fine powder. The composition may also include a synthetic resin binder. The partially oxidized nitrocellulose has a nitrogen content of 8.0 to 12.5% and contains 2.0 to 100 mmol of carboxyl group per 100 g of nitrocellulose. Use of the partically oxidized nitrocellulose gives increased ability to disperse the magnetic powder within the composition and does not adversely effect the adhesion between the composition and the support.
Claims11
A magnetic coating composition for magnetic recording media, comprising:
- partially oxidized nitrocellulose;
- and
- a powder selected from the group consiting of magnetic fine powder metal fine powder, said partially oxidized nitrocellulose having a nitrogen content 8.0 to 12.5% and containing 2.0 to 100 mmol of carboxyl group per 100 g of nitrocellulose.
Dependencies are inferred from the claim text.