Magnetic recording media

Details Magnetic recording media Magnetic recording media

1983-07-20

1986-02-04

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of polyamidoester

360134, 360135, 360136, 252 6254, 427128, 428694, 428900, G11B 570

Patent

active

045686122

ABSTRACT:
Magnetic recording media comprise a non-magnetic base which is provided with a magnetic layer which consists of a dispersion of an anisotropic magnetic material in an organic binder which consists essentially of an OH-containing polyurea-urethane binder crosslinked with polyisocyanate. The OH-containing polyurea-urethane is obtained by reacting a polydiol, a diol and a primary or secondary aminoalcohol, and if appropriate a triol, with a diisocyanate.

REFERENCES:
patent: 2871218 (1959-01-01), Schollenberger
patent: 2899411 (1959-08-01), Schollenberger
patent: 3149995 (1964-09-01), Bauer
patent: 3150995 (1964-09-01), Bauer
patent: 3247017 (1966-04-01), Eichler
patent: 3320090 (1967-05-01), Graubert
patent: 3558353 (1971-01-01), Harada
patent: 4058646 (1977-11-01), Vaeth
patent: 4320171 (1982-03-01), Motz
patent: 4324438 (1980-11-01), Horigome
patent: 4328282 (1982-05-01), Lehner
patent: 4368238 (1983-01-01), Somezawa

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