Magnetic recording medium
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 17, 2004
Grant Date -
Feb 13, 2003
app pub date -
Jul 23, 2002
filing date -
Jul 24, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Magnetic recording medium including a substrate, at least one lower layer which is applied thereon and contains at least one binder and at least one inorganic pigment, and at least one upper magnetic layer which is applied to the lower layer and contains at least one magnetic pigment P2 and at least one binder and at least one further, nonmagnetic pigment P3, the binder matrix of the upper magnetic layer having a Tg of at least 50.degree. C. and the binder matrix of the lower layer containing at least one binder having a Tg of <50.degree. C., the further nonmagnetic pigment P3 of the upper magnetic layer having a particle size which corresponds at least to the dry thickness of the upper magnetic layer; and the upper magnetic layer containing at least one compound (A) and at least one compound (B), (A) and (B) corresponding to the following formulae R.sup.1 --COO--(R.sup.3 --O).sub.m --R.sup.2 (A) R.sup.1 --COO--R.sup.4 (B) and processes for their production.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully