Magnetic coating composition of partially oxidized nitrocellulos

Details Magnetic coating composition of partially oxidized nitrocellulos Magnetic coating composition of partially oxidized nitrocellulos

1983-02-24

1984-10-09

Kight, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 31, 524 32, 427128, 428900, 428532, 4284259, 252 6254, G11B 570

Patent

active

044762577

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.

REFERENCES:
patent: 4020236 (1977-04-01), Aonuma et al.
patent: 4356232 (1982-10-01), Tadokoro et al.
patent: 4363850 (1982-12-01), Yasui et al.
Progress in Organic Coatings, 10 (1982) pp. 195-204.
Encyclopedia of Polymer Science and Technology, vol. 3, pp. 313-315.
Catalog of Nitrocelluloses-Asahi Kasei Kogyo K.K.
Macromolecules, vol. 13 (1980) pp. 74-79.
Encyclopedia of Chemical Technology, 2nd Edition, pp. 625-629.

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