Magnetic recording medium containing magnetic material dispersed

Details Magnetic recording medium containing magnetic material dispersed Magnetic recording medium containing magnetic material dispersed

1994-09-29

1996-09-03

Resan, Stevan A.

Stock material or miscellaneous articles

Composite

Of polyamidoester

428694BU, 428694BY, 428900, G11B 5702

Patent

active

055522297

ABSTRACT:
In magnetic recording media consisting of a nonmagnetic substrate and at least one magnetizable layer firmly applied thereon and based on magnetic material dispersed in a binder mixture which contains at least one hydroxyl-containing, preferably low molecular weight polyureaurethane and one polyurethaneurea (meth)acrylate, the polyurethaneurea (meth)acrylate is obtained by reacting a poly(meth)acrylate having up to 2 terminal OH groups per mol and a molecular weight of from 200 to 50,000 with a mixture of aliphatic polyisocyanates having an average functionality of from 3.0 to 6.0 NCO groups per mol, consisting of
from 0.1 to 10% by weight of a diisocyanate, from 30 to 80% by weight of a triisocyanate and from 20 to 60% by weight of an isocyanate having a functionality of from 4 to 10, with the proviso that from 1.2 to 3.0 NCO groups react per OH group and the remaining NCO groups are converted into substituted terminal urea groups with a polyfunctional amine or with a mixture of different polyfunctional amines.

REFERENCES:
patent: 2871218 (1959-01-01), Schollenberger et al.
patent: 2899411 (1959-08-01), Schollenberger et al.
patent: 4152485 (1979-05-01), Mizumura et al.
patent: 4567108 (1986-01-01), Lehner et al.
patent: 4567109 (1986-01-01), Lehner et al.
patent: 4568610 (1986-02-01), Lehner et al.
patent: 4666781 (1987-05-01), Lehner et al.
patent: 4948859 (1990-08-01), Echols et al.
patent: 5130202 (1992-07-01), Keppeler et al.
patent: 5266408 (1993-11-01), Kepdeler et al.
patent: 5281482 (1994-01-01), Martens
Chem. Abstract JP 57 092 422 Jun. 1982.
Chem. Abstract JP 57 092 421 Jun. 1982.
Cellulosechemie 13 (1932), 58 et seq., H. Fikentscher.

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