Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1985-04-17
1987-11-24
Thibodeau, Paul J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
427131, 4284231, 4284237, 428694, 428900, G11B 568
Patent
active
047089067
ABSTRACT:
A magnetic recording medium comprising a non-magnetic support and a magnetic recording layer formed on the support through an undercoat layer. The undercoat layer is made of a combination of a thermosetting polyurethane resin, carbon black and an ammonium salt of a phosphoric ester of the following formula ##STR1## in which each R.sub.1, each R.sub.2 and R.sub.3 independently represent an alkyl group having from 1 to 18 carbon atoms, alkoxy group having from 1 to 4 carbon atoms, an or phenyl group. Preferably, in the formula, each R.sub.1 represents CH.sub.3, each R.sub.2 represents an alkyl group having from 1 to 14 carbon atoms, and R.sub.3 represents --OCH.sub.3 or a phenyl radical. The undercoat layer may further comprise a thermosetting polyester resin so as to improve adhesiveness.
REFERENCES:
patent: 4183976 (1980-01-01), Yamada et al.
patent: 4197347 (1980-04-01), Ogawa et al.
patent: 4275113 (1981-06-01), Saito et al.
patent: 4364885 (1982-12-01), Kanai et al.
patent: 4468436 (1984-08-01), Okita et al.
Fujiki Kuniharu
Matsumoto Ikuo
Sekiya Satoshi
Thibodeau Paul J.
Victor Company of Japan Ltd.
LandOfFree
Magnetic recording medium comprising an undercoat layer made of 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 comprising an undercoat layer made of , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording medium comprising an undercoat layer made of will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2423588