Stock material or miscellaneous articles – Composite – Of polyamidoester
Patent
1993-04-28
1995-05-09
Resan, Stevan A.
Stock material or miscellaneous articles
Composite
Of polyamidoester
4284259, 428413, 428524, 428694BU, 428694BL, 428900, G11B 500
Patent
active
054138620
ABSTRACT:
According to the present invention, a magnetic recording medium having a non-magnetic support and a magnetic layer formed thereon is provided. The magnetic layer is formed from a composition containing as its main components ferromagnetic particles and a resinous binder. The binder resin contains a polyurethane resin containing as its components a high molecular weight polyol (A) with a molecular weight of 500 or more and an organic diisocyanate (B). The high molecular weight polyol (A) contains as its components an aromatic polyester diol (A-1) having a metal sulfonate group in an amount of 20 to 600 equivalents/10.sup.6 g and a polyol (A-2) which has no metal sulfonate group and is in a liquid state at 20.degree. C. The ratio between the aromatic polyester diol (A-1) and the polyol (A-2) is in the range of 10:1 to 1:4. A urethane group is contained in the polyurethane resin in an amount of 600 to 1500 equivalents/10.sup.6 g.
REFERENCES:
patent: 4152485 (1979-05-01), Mizumura et al.
patent: 5278275 (1994-01-01), Yatsuka et al.
Murata Hiroshi
Yatsuka Takeshi
Resan Stevan A.
Toyo Boseki Kabushiki Kaisha
LandOfFree
Magnetic recording medium having a magnetic layer comprising a s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic recording medium having a magnetic layer comprising a s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording medium having a magnetic layer comprising a s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1704359