EP0346074A2
Expired / Lapsed
EP
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Mass of fine particles of inorganic material and method of producing the same, ultrathin film of the inorganic fine particles and method of making the same, magnetic recording medium and method of providing the same method of manufacturing patterns of inorganic material, and method of manufacturing wirings of inorganic material
Assignee: Panasonic Holdings Corp
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Filing: 1989-06-06
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Granted: —
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Expires: 2009-06-06
Abstract
Abstract The present invention concerns a field of dealing with inorganic fine particles (1), and provides a mass of the inorganic fine particles and method of producing the mass, and as applications of the method, an ultrathin film of inorganic fine particles and method of producing the ultrathin film, a magnetic recording medium and method of manufacturing the medium, and a method of manufacturing an inorganic pattern and method of manufacturing a inorganic wiring. Furthermore, the present invention provides the magnetic recording medium by covering the inorganic fine particles with a monomolecular film (2) of a silane type surface active agent through chemical adsorption and permitting the inorganic fine particles and the monomolecular film to have functions.
Inventors
- 👤 Norihisa Mino
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 16:01
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/712; B; B82; B82Y; B82Y30/00; B82Y10/00; C; C09; C09C; C09C3/00; C09C3/12; C01; C01P; C01P2004/00; C01P2004/20; C01P2004/60; C01P2004/61; C01P2004/64; C01P2006/00; C01P2006/42; C01P2006/90; H; H05; H05K; H05K3/00; H05K3/10; H05K3/102; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995; Y10T428/31504; Y10T428/31536; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
44 words
A mass of inorganic fine particles which each is covered with a monomolecular film of a silane type surface active agent, at least part of said monomolecular films is chemically bonded to the monomolecular films formed on the surfaces of adjacent inorganic fine particles.
Claim 2
Dependent Claim
44 words
A mass of inorganic fine particles which each is covered with a monomolecular film of a silane type surface active agent, at least part of said monomolecular films is chemically bonded to the monomolecular films formed on the surfaces of adjacent inorganic fine particles.
Claim 3
Dependent Claim
30 words
The mass of inorganic fine particles according to Claim 1, wherein a film of oxides of inorganic fine particle constituting-ingredients is formed on the surface of the inorganic fine particles.
Claim 4
Dependent Claim
33 words
The mass of inorganic fine particles according to Claim 1, wherein end groups on one side of said silane type surface active agent and the inorganic fine particles form a siloxane bond of
Claim 5
Dependent Claim
22 words
The mass of inorganic fine particles according to Claim 1, wherein said silane type surface active agent comprises a straight hydrocarbon chain.
Claim 6
Dependent Claim
32 words
The mass of inorganic fine particles according to Claim 1, wherein a number of the CH₂ group forming the straight-chain hydrocarbon of said silane type surface active agent is 10 or more.
Claim 7
Dependent Claim
21 words
The mass of inorganic fine particles according to Claim 1, wherein said silane type surface active agent contains a functional group.
Claim 8
Dependent Claim
28 words
The mass of inorganic fine particles according to Claim 1, wherein said silane type surface active agent is chemically bonded to the surface of said inorganic fine particles.
Claim 9
Dependent Claim
62 words
The mass of inorganic fine particles according to Claim 1, wherein the functional group included in the silane type surface active agent chemically adsorbed on the surface of the inorganic fine particles is chemically bonded to the functional group included in the silane type surface active agent chemically adsorbed on the surface of at least one of the adjacent inorganic fine particles.
Claim 10
Dependent Claim
61 words
An ultrathin film of inorganic fine particles, which comprises the inorganic fine particles fixed in the ultrathin film form and an organic thin film of a silane type surface active agent formed on the surface of said inroganic fine particles, at least part of the functional groups included in said silane type surface active agent being chemically bonded to each other.
Claim 11
Dependent Claim
61 words
An ultrathin film of inorganic fine particles, which comprises the inorganic fine particles fixed in the ultrathin film form and an organic thin film of a silane type surface active agent formed on the surface of said inroganic fine particles, at least part of the functional groups included in said silane type surface active agent being chemically bonded to each other.
Claim 12
Dependent Claim
31 words
The ultrathin film of inorganic fine particles according to Claim 9, wherein a film of oxides of inorganic fine particle constituting-ingredients is formed on the surface of the inorganic fine particle.
Claim 13
Dependent Claim
34 words
The ultrathin film of inorganic fine particles according to Claim 9, wherein end groups on one side of said silane type surface active agent and the inorganic fine particles form a siloxane bond of
Claim 14
Dependent Claim
23 words
The ultrathin film of inorganic fine particles according to Claim 9, wherein said silane type surface active agent comprises a straight hydrocarbon chain.
Claim 15
Dependent Claim
33 words
The ultrathin film of inorganic fine particles according to Claim 9, wherein a number of the CH₂ group forming the straight-chain hydrocarbon of said silane type surface active agent is 10 or more.
Claim 16
Dependent Claim
22 words
The ultrathin film of inorganic fine particles according to Claim 9, wherein said silane type surface active agent contains a functional group.
Claim 17
Dependent Claim
29 words
The ultrathin film of inorganic fine particles according to Claim 9, wherein said silane type surface active agent is chemically bonded to the surface of said inorganic fine particles.
Claim 18
Dependent Claim
63 words
The ultrathin film of inorganic fine particles according to Claim 9, wherein the functional group included in the silane type surface active agent chemically adsorbed on the surface of the inorganic fine particles is chemically bonded to the functional group included in the silane type surface active agent chemically adsorbed on the surface of at least one of the adjacent inorganic fine particles.
Claim 19
Independent Claim
91 words
A method of producing a mass of inorganic fine particles, which comprises steps of reacting the inorganic fine particles on the surface thereof with a silane type surface active agent containing a straight hydrocarbon chain and a functional group to form a monomolecular film on the surface of said inorganic fine particles, making the inorganic fine particles covered with the monomolecular film in a predetermined density on a substrate, and subjecting the monomolecular film to physical or chemical treatment to allow the functional groups to be chemically bonded to each other.
Claim 20
Independent Claim
91 words
A method of producing a mass of inorganic fine particles, which comprises steps of reacting the inorganic fine particles on the surface thereof with a silane type surface active agent containing a straight hydrocarbon chain and a functional group to form a monomolecular film on the surface of said inorganic fine particles, making the inorganic fine particles covered with the monomolecular film in a predetermined density on a substrate, and subjecting the monomolecular film to physical or chemical treatment to allow the functional groups to be chemically bonded to each other.
Claim 21
Dependent Claim
41 words
The method of producing the mass of inorganic fine particles according to Claim 17, wherein a chemical adsorbing method is used in forming the monomolecular film of the silane type surface active agent on the surface of the inorganic fine particles.
Claim 22
Dependent Claim
56 words
The method of producing the mass of inorganic fine particles according to Claim 17, wherein said silane surface active agent has a straight-chain hydrocarbyl group containing 10 or more CH₂ groups, polymerizing groups at one end thereof and a group of being adsorbed at the other end thereof on the surface of said inorganic fine particles.
Claim 23
Dependent Claim
41 words
The method of producing the mass of inorganic fine particles according to Claim 17, wherein the group in said silane type surface active agent of being adsorbed on the surface of said inorganic fine particles is mono-, di- or tri-chlorosilane group.
Claim 24
Dependent Claim
23 words
The method of producing the mass of inorganic fine particles according to Claim 17, wherein said polymerizing group is an unsaturated bonding group.
Claim 25
Dependent Claim
36 words
The method of producing the mass of inorganic fine particles according to Claim 17, wherein said physical treatment is carried out with an energy beam such as ultraviolet rays, far ultraviolet rays, electron beam and X-rays.
Claim 26
Dependent Claim
27 words
The method of producing the mass of inorganic fine particles according to Claim 17, wherein said chemical treatment is carried out in the presence of a catalyst.
Claim 27
Independent Claim
84 words
A method of producing an ultrathin film of inorganic fine particles, which comprises steps of forming a monomolecular film of a silane type surface active agent uniformly on the surface of inorganic fine particles, developing said inorganic fine particles on a gas-liquid interface, transferring said inorganic fine particles onto a substrate, and subjecting the inorganic fine particles transferred on the substrate to physical or chemical treatment, thereby allowing the groups in the silane type surface active agent to be chemically bonded to each other.
Claim 28
Independent Claim
84 words
A method of producing an ultrathin film of inorganic fine particles, which comprises steps of forming a monomolecular film of a silane type surface active agent uniformly on the surface of inorganic fine particles, developing said inorganic fine particles on a gas-liquid interface, transferring said inorganic fine particles onto a substrate, and subjecting the inorganic fine particles transferred on the substrate to physical or chemical treatment, thereby allowing the groups in the silane type surface active agent to be chemically bonded to each other.
Claim 29
Dependent Claim
34 words
The method of producing an ultrathin film of inorganic fine particles according to Claim 24, wherein the step of transferring the inorganic fine particles onto the substrate is carried out with a Langmuir-Blodgett's method.
Claim 30
Dependent Claim
57 words
The method of producing an ultrathin film of inorganic fine particles according to Claim 24, wherein said silane surface active agent has a straight-chain hydrocarbyl group containing 10 or more CH₂ groups, polymerizing groups at one end thereof and a group of being adsorbed at the other end thereof on the surface of said inorganic fine particles.
Claim 31
Dependent Claim
42 words
The method of producing an ultrathin film of inorganic fine particles according to Claim 24, wherein the group in said silane type surface active agent of being adsorbed on the surface of said inorganic fine particles is mono-, di- or tri-chlorosilane group.
Claim 32
Dependent Claim
24 words
The method of producing an ultrathin film of inorganic fine particles according to Claim 24, wherein said polymerizing group is an unsaturated bonding group.
Claim 33
Dependent Claim
37 words
The method of producing an ultrathin film of inorganic fine particles according to Claim 24, wherein said physical treatment is carried out with an energy beam such as ultraviolet rays, far ultraviolet rays, electron beam and X-rays.
Claim 34
Dependent Claim
28 words
The method of producing an ultrathin film of inorganic fine particles according to Claim 24, wherein said chemical treatment is carried out in the presence of a catalyst.
Claim 35
Dependent Claim
47 words
A magnetic recording material, which comprises a substrate and a thin film of magnetic inorganic fine particles covered with a monomolecular film of a silane type surface active agent on the substrate, the groups in said silane type surface active agent being chemically bonded to each other.
Claim 36
Dependent Claim
47 words
A magnetic recording material, which comprises a substrate and a thin film of magnetic inorganic fine particles covered with a monomolecular film of a silane type surface active agent on the substrate, the groups in said silane type surface active agent being chemically bonded to each other.
Claim 37
Independent Claim
86 words
A method of manufacturing a magnetic recording medium, which comprises steps of forming a monomolecular film of a silane type surface active agent uniformly on the surface of magnetic inorganic fine particles, forming a film of said magnetic inorganic fine particles on a substrate for said magnetic recording medium, and subjecting said film of the magnetic inorganic fine particles formed on said substrate to physical or chemical treatment to allow the groups in said silane type surface active agent to be chemically bonded to each other.
Claim 38
Independent Claim
86 words
A method of manufacturing a magnetic recording medium, which comprises steps of forming a monomolecular film of a silane type surface active agent uniformly on the surface of magnetic inorganic fine particles, forming a film of said magnetic inorganic fine particles on a substrate for said magnetic recording medium, and subjecting said film of the magnetic inorganic fine particles formed on said substrate to physical or chemical treatment to allow the groups in said silane type surface active agent to be chemically bonded to each other.
Claim 39
Dependent Claim
23 words
The method of manufacturing a magnetic recording medium according to Claim 32, wherein said physical treatment is carried out in a magnetic field.
Claim 40
Dependent Claim
30 words
The method of manufacturing a magnetic recording medium according to Claim 32, wherein said film of magnetic inorganic fine particles is formed by a spin coating technique on said substrate.
Claim 41
Dependent Claim
35 words
The method of manufacturing a magnetic recording medium according to Claim 32, wherein the step of forming said film of the magnetic inorganic fine particles onto the substrate is carried out with a Langmuir-Blodgett's method.
Claim 42
Dependent Claim
32 words
The method of manufacturing a magnetic recording medium according to Claim 35, wherein the step of forming said film of the magnetic inorganic fine particles is carried out in a magnetic field.
Claim 43
Dependent Claim
69 words
The method of manufacturing a magnetic recording medium according to Claim 32, wherein a step of magnetizing the magnetic inorganic fine particles is inserted between the step of forming the monomolecular film of silane type surface active agent uniformly on the surface of said magnetic inorganic fine particles and the step of forming the film of said magnetic inorganic fine particles on the substrate for the magnetic recording medium.
Claim 44
Independent Claim
97 words
A method of manufacturing an inorganic pattern, which comprises steps of reacting a silane type surface active agent containing a straight hydrocarbon chain and a functional group with the surface of inorganic fine particles to form a monomolecular film of the agent on said surface of inorganic fine particles, making the inorganic fine particles covered with the monomolecular film in a predetermined density on a substrate, and subjecting the monomolecular film at portions on which said inorganic pattern is to be formed, to physical treatment to allow the functional groups to be chemically bonded to each other.
Claim 45
Independent Claim
97 words
A method of manufacturing an inorganic pattern, which comprises steps of reacting a silane type surface active agent containing a straight hydrocarbon chain and a functional group with the surface of inorganic fine particles to form a monomolecular film of the agent on said surface of inorganic fine particles, making the inorganic fine particles covered with the monomolecular film in a predetermined density on a substrate, and subjecting the monomolecular film at portions on which said inorganic pattern is to be formed, to physical treatment to allow the functional groups to be chemically bonded to each other.
Claim 46
Independent Claim
102 words
A method of manufacturing an inorganic pattern, which comprises steps of reacting a silane type surface active agent containing a straight hydrocarbon chain and a functional group with the surface of inorganic fine particles to form a monomolecular film of the agent on said surface of inorganic fine particles, making the inorganic fine particles covered with the monomolecular film in a predetermined density on a substrate, subjecting the monomolecular film at portions on which said inorganic pattern is to be formed, to physical treatment to allow the functional groups to be chemically bonded to each other, and heat treating said inorganic pattern.
Claim 47
Independent Claim
102 words
A method of manufacturing an inorganic pattern, which comprises steps of reacting a silane type surface active agent containing a straight hydrocarbon chain and a functional group with the surface of inorganic fine particles to form a monomolecular film of the agent on said surface of inorganic fine particles, making the inorganic fine particles covered with the monomolecular film in a predetermined density on a substrate, subjecting the monomolecular film at portions on which said inorganic pattern is to be formed, to physical treatment to allow the functional groups to be chemically bonded to each other, and heat treating said inorganic pattern.
References Cited (Backward Citations)
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