US5407709A
Expired / Lapsed
US
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Anti-contaminating adsorbed film and method of manufacturing the same
Assignee: Panasonic Holdings Corp
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Filing: 1993-11-08
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Granted: 1995-04-18
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Expires: 2013-11-08
Abstract
Abstract This invention provides for an anti-contaminating film which is adsorbed to a substrate surface. The film contains a -Si- group and fluorocarbon group. The -Si- group is covalently bonded to the substrate surface. It also provides a forming method of an anti-contaminating film on a hydrogen active substrate surface by contacting the substrate surface with a non-aqueous solution, containing a surface active material having fluorocarbon groups and chlorosilane groups, the substrate surface having active hydrogen groups, removing unreacted surface active material remaining on the substrate by washing the substrate with a non-aqueous organic solution for making a monomolecular precursor film, reacting chlorosilane groups unreacted in the adsorbed monomolecular a precursor film with water after the removing step, and drying the adsorbed monomolecular film.
Inventors
- 👤 Kazufumi Ogawa
- 👤 Norihisa Mino
- 👤 Mamoru Soga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:18
CPC Classifications
B; B82; B82Y; B82Y30/00; B05; B05D; B05D1/00; B05D1/18; B05D1/185; B82Y40/00; B82Y5/00; C; C03; C03C; C03C17/00; C03C17/34; C03C17/42; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/046; C09; C09D; C09D183/00; C09D183/02; C09D183/04; C09D183/08; C09D4/00; C08J2483/00; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/261; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
A method of adsorbing an anti-contaminating monomolecular film to a substrate surface comprising: reacting the substrate surface with a non-aqueous solution, said non-aqueous solution containing a surface active material having fluorocarbon groups and chlorosilane groups, said substrate surface having active hydrogen groups; reacting unreacted surface active material remaining on the substrate by washing the substrate with a non-aqueous organic solution, thereby making an adsorbed monomolecular precursor film; reacting chlorosilane groups unreacted in the adsorbed monomolecular precursor film with water after the removing step, thereby making an adsorbed monomolecular film; and drying the adsorbed monomolecular film.
Claim 2
Independent Claim
95 words
A method of adsorbing an anti-contaminating monomolecular film to a substrate surface comprising: reacting the substrate surface with a non-aqueous solution, said non-aqueous solution containing a surface active material having fluorocarbon groups and chlorosilane groups, said substrate surface having active hydrogen groups; reacting unreacted surface active material remaining on the substrate by washing the substrate with a non-aqueous organic solution, thereby making an adsorbed monomolecular precursor film; reacting chlorosilane groups unreacted in the adsorbed monomolecular precursor film with water after the removing step, thereby making an adsorbed monomolecular film; and drying the adsorbed monomolecular film.
Claim 3
Dependent Claim
35 words
The method of adsorbing an anti-contaminating film according to claim 1, wherein said substrate surface is made hydrophilic prior to said first reacting step by introducing oxygen or nitrogen in a plasma or corona atmosphere.
Claim 4
Dependent Claim
83 words
The method of adsorbing an anti-contaminating film according to claim 1, wherein said surface active material is CF.sub.3 (CF.sub.2).sub.n (R).sub.m SiX.sub.p Cl.sub.3-p wherein n represents 0 or an integer, R represents an alkylene group, vinylene group, ethynylene group, a substituted group containing a silicon atom, or a substituted group containing an oxygen atom, m represents 0 or 1, X represents a hydrogen atom or a substituted group consisting of an alkyl group or an alkoxyl group, and p represents 0, 1 or 2.
Claim 5
Independent Claim
70 words
A method of adsorbing an anti-contaminating polymer film to a substrate surface comprising: reacting the substrate surface with a non-aqueous solution, said non-aqueous solution containing a surface active material having fluorine groups and chlorosilane groups, said substrate surface having active hydrogen groups; forming an absorbed polymer film on the substrate surface, which surface contains a silanol group, by reacting the chlorosilane groups with water: and drying said adsorbed polymer film.
Claim 6
Independent Claim
70 words
A method of adsorbing an anti-contaminating polymer film to a substrate surface comprising: reacting the substrate surface with a non-aqueous solution, said non-aqueous solution containing a surface active material having fluorine groups and chlorosilane groups, said substrate surface having active hydrogen groups; forming an absorbed polymer film on the substrate surface, which surface contains a silanol group, by reacting the chlorosilane groups with water: and drying said adsorbed polymer film.
Claim 7
Dependent Claim
35 words
The method of adsorbing an anti-contaminating polymer film according to claim 4, wherein said substrate surface is made hydrophilic prior to said reacting step by introducing oxygen or nitrogen in a plasma or corona atmosphere.
Claim 8
Dependent Claim
81 words
The method of adsorbing an anti-contaminating polymer film according to claim 4, wherein said surface active material is CF.sub.3 (CF.sub.2).sub.n (R).sub.m SiX.sub.p Cl.sub.3-p where n represents 0 or an integer, R represents an alkylene group, vinylene group, ethynylene group, or a substituted group containing a silicon atom or an oxygen atom, m represents 0 or 1, X represents a hydrogen atom or a substituted group consisting of an alkyl group or an alkoxyl group, and p represents 0, 1 or 2.
References Cited (Backward Citations)
CA604002A
Cited
GB805028A
Cited
US4539061A
Cited
US4902585A
Cited
EP0326438A2
Cited
US5010356A
Cited
EP0367438B1
Cited
EP0482613A1
Cited
EP0491251A1
Cited
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