Title:
【発明の名称】カルボン酸アンモニウム塩を有する含フッ素化合物及び表面改質剤、これを用いた磁気記録媒体
Document Type and Number:
Japanese Patent JP2772896
Kind Code:
B2
Abstract:
A magnetic recording medium is produced by coating a body having (a) a non-magnetic substrate, (b) at least one magnetic substance layer formed on the non-magnetic substrate and (c) at least one protective layer formed on the magnetic substance layer which contains at least one member selected from the group consisting of inorganic oxides, graphite and amorphous allotropes of carbon, with a solid surface modifier containing (i) an ammonium carboxylate type fluorine-containing compound having the formula,(Rf-COO-H+)n-R,wherein Rf is a perfluoropolyoxyalkyl chain having a number average molecular weight of at least 800, n is a number of 1-2, and R is a residue selected from the group consisting of an aromatic ammonium which may have one or more substituents at the nucleus, benzylammonium which may have one or more substituents at the nucleus, dibenzylammonium which may have one or more substituents at the nucleus, tribenzylammonium which may have one or more substituents at the nucleus and an aromatic inium which may have one or more substituents at the nucleus, and (ii) an alcohol or fluorine-containing solvent and optionally water, on the surface of the protective layer (c), to form a coat, and then removing the solvent, or alcohol and water from the coat.
Inventors:
Shoji Miyoshi
Takayuki Nakagawa
Hiroshi Sasaki
Yutaka Ito
Shigeki Komatsuzaki
Hiroyuki Matsumoto
Takayuki Nakagawa
Hiroshi Sasaki
Yutaka Ito
Shigeki Komatsuzaki
Hiroyuki Matsumoto
Application Number:
JP32147392A
Publication Date:
July 09, 1998
Filing Date:
November 06, 1992
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
C07D215/00; C07D219/10; C07D239/24; C08G65/32; C09D5/00; C09D171/00; C09D171/02; C09K3/00; C09K3/18; C10M105/64; C10M105/70; C10M107/38; C10M107/44; C07D213/20; G11B5/64; G11B5/71; G11B5/72; G11B5/725; G11B5/73; C10N40/18; C10N50/08; (IPC1-7): C08G65/32; C09D5/00; C09D171/02; C09K3/00; C09K3/18; C10M107/38; C10M107/44; G11B5/71
Domestic Patent References:
| JP288635A | ||||
| JP649961A | ||||
| JP397764A | ||||
| JP1131132A | ||||
| JP63225347A | ||||
| JP62185777A | ||||
| JP62180116A | ||||
| JP60101717A | ||||
| JP5759843A |
Attorney, Agent or Firm:
Hiroshi Nakamoto