发明授权
- 专利标题: Magnetic recording medium comprising a protective layer and a layer of ammonium carboxylate fluorine-containing compound
- 专利标题(中): 包含保护层和含羧酸铵含氟化合物层的磁记录介质
-
申请号: US381277申请日: 1995-01-31
-
公开(公告)号: US5536578A公开(公告)日: 1996-07-16
- 发明人: Mitsuyoshi Shoji , Takayuki Nakakawaji , Hiroshi Sasaki , Yutaka Ito , Shigeki Komatsuzaki , Hiroyuki Matsumoto
- 申请人: Mitsuyoshi Shoji , Takayuki Nakakawaji , Hiroshi Sasaki , Yutaka Ito , Shigeki Komatsuzaki , Hiroyuki Matsumoto
- 申请人地址: JPX Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX3-318645 19911107
- 主分类号: C07D213/20
- IPC分类号: C07D213/20 ; 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 ; C10N40/18 ; C10N50/08 ; G11B5/64 ; G11B5/71 ; G11B5/72 ; G11B5/725 ; G11B5/73 ; G11B5/00
摘要:
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,(R.sub.f --COO.sup.- H.sup.+).sub.n --R,wherein R.sub.f 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.
公开/授权文献
- US06124676A Bi-substrate plasma panel 公开/授权日:2000-09-26