Stock material or miscellaneous articles – Composite – Of polyamidoester
Patent
1991-04-26
1992-10-20
Thibodeau, Paul J.
Stock material or miscellaneous articles
Composite
Of polyamidoester
4284246, 428694, 428900, G11B 500
Patent
active
051569167
ABSTRACT:
A magnetic recording medium having a support and provided thereon, a magnetic layer containing a magnetic powder including iron carbide, and a binder comprising a polar group is disclosed. The binder comprises a resin (A) and a copolymer resin formed by copolymerization of a monomer (A) and a copolymeric monomer comprising the polar group, wherein the polar group is selected from a sulfo group, a phospho group, a carboxyl group or derivatives thereof including salts thereof; the resin (A) is preferably a urethane resin having the polar group; the monomer (A) is preferably vinyl chloride.
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patent: 4632866 (1986-12-01), Kubota et al.
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patent: 4707411 (1987-11-01), Nakayama et al.
patent: 4784914 (1988-11-01), Matsufuji et al.
patent: 4789599 (1988-12-01), Nakamura et al.
patent: 4794042 (1988-12-01), Kubota et al.
Patent Abstracts of Japan, vol. 11, No. 378 (P-645) [2825]; Dec. 10, 1987 JPA-62-146,432; Jun. 30, 1987.
Bierman Jordan B.
Konica Corporation
Resan Stevan A.
Thibodeau Paul J.
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