US4649071A
Expired / Lapsed
US
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Composite material and process for producing the same
Assignee: Toyota Central R&D Labs Inc
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Filing: 1985-04-29
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Granted: 1987-03-10
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Expires: 2005-04-29
Abstract
Abstract A composite material comprising a substrate and a single or multiple surface layer formed thereon is disclosed. The surface layer has a structure in which the side in contact with the substrate contains a comparatively large amount of an adhesive component which bonds the surface layer to the substrate and the side opposite to the substrate contains a comparatively large amount of a protective component having characteristic chemical and physical properties. The amounts of the two components vary continuously across the thickness of the surface layer. The surface layer is formed by plasma polymerization.
Inventors
- 👤 Ichiro Tajima
- 👤 Minoru Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/62; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/31; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
114 words
A composite material comprising a substrate and at least a single surface layer formed thereon, said surface layer comprising an adhesive component and a protective component, said surface layer having a structure wherein a first side in contact with said substrate contains a larger amount of said adhesive component than a second side of said surface layer, and said second side of said surface layer contains a larger amount of said protective component than said first side of said surface layer, said adhesive component being a polymer formed by plasma polymerization and having an adhesive property, and said protective component being a polymer formed by plasma polymerization and having a hydrophobic or hydrophilic property.
Claim 2
Dependent Claim
114 words
A composite material comprising a substrate and at least a single surface layer formed thereon, said surface layer comprising an adhesive component and a protective component, said surface layer having a structure wherein a first side in contact with said substrate contains a larger amount of said adhesive component than a second side of said surface layer, and said second side of said surface layer contains a larger amount of said protective component than said first side of said surface layer, said adhesive component being a polymer formed by plasma polymerization and having an adhesive property, and said protective component being a polymer formed by plasma polymerization and having a hydrophobic or hydrophilic property.
Claim 3
Dependent Claim
32 words
A composite material as set forth in claim 1, wherein the amount of said adhesive component and the amount of said protective component vary continuously across the thickness of said surface layer.
Claim 4
Dependent Claim
76 words
A composite material as set forth in claim 1, wherein said first side of said surface layer comprises said adhesive component but not said protective component, and said second side of said surface layer comprises said protective component but not said adhesive component, and wherein the amount of said adhesive component and the amount of said protective component vary continuously across the thickness of an intermediate part located between said first side and said second side.
Claim 5
Dependent Claim
75 words
A composite material as set forth in claim 1, wherein said surface layer comprises a first layer in contact with said substrate and a second layer being opposite said substrate, said first layer comprises an adhesion layer comprising said adhesive component but not said protective component and said second layer comprises a protective layer comprising said protective component but not said adhesive component, and the two components vary at a boundary between the two layers.
Claim 6
Dependent Claim
14 words
A composite material as set forth in claim 1, wherein said substrate is glass.
Claim 7
Dependent Claim
24 words
A composite material as set forth in claim 5, wherein the surface layer has a contact angle with water of not less than 90°.
Claim 8
Dependent Claim
46 words
A composite material as set forth in claim 5, wherein said adhesive component is a polymer formed of a first silicon compound and said protective component is a polymer formed of a second silicon compound containing more carbon or less oxygen than said first silicon compound.
Claim 9
Dependent Claim
44 words
A composite material as set forth in claim 7, wherein said first and second silicon compounds are independently selected from the group consisting of tetramethylsilane, trimethylmethoxysilane, dimethyldimethoxysilane, trimethoxymethylsilane, tetramethoxysilane, ethoxytrimethylsilane, diethoxydimethylsilane, triethoxymethylsilane, tetraethoxysilane, vinyltrimethylsilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltriethoxysilane, vinyltriacetoxysilane, tetravinylsilane, hexamethyldisiloxane, hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane and tetrapropoxysilane.
Claim 10
Dependent Claim
33 words
A composite material as set forth in claim 5, wherein said adhesive component is a polymer formed of a silicon compound and said protective component is a polymer formed of a fluorine compound.
Claim 11
Dependent Claim
26 words
A composite material as set forth in claim 9, wherein said fluorine compound is selected from the group consisting of propylene hexafluoride, tetrafluoroethylene, perfluorobenzene and perfluorotoluene.
Claim 12
Dependent Claim
33 words
A composite material as set forth in claim 9, wherein the silicon compound is trimethoxymethylsilane and the fluorine compound is tetrafluoroethylene, and the surface layer has a contact angle with water of 100°.
Claim 13
Dependent Claim
40 words
A composite material as set forth in claim 9 wherein said silicon compound is selected from the group consisting of tetramethylsilane, trimethylmethoxysilane, dimethyldimethoxysilane, trimethoxymethylsilane, tetramethoxysilane, ethoxytrimethylsilane, diethoxydimethylsilane, triethoxymethylsilane, tetraethoxysilane, vinyltrimethylsilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltrichlorosilane, vinyltriacetoxysilane, tetravinylsilane, hexamethyldisiloxane, hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane and tetrapropoxysilane.
Claim 14
Dependent Claim
14 words
A composite material as set forth in claim 1 wherein said substrate is plastics.
Claim 15
Dependent Claim
35 words
A composite material as set forth in claim 13, wherein said plastics substrate is selected from the group consisting of polystyrene resin, polyvinylchloride resin, polyethylene resin, polymethacrylate resin, ionomer, polycarbonate, epoxy resin and unsaturated polyester.
Claim 16
Dependent Claim
24 words
A composite material as set forth in claim 13, wherein said surface layer has a contact angle with water of not more than 60°.
Claim 17
Dependent Claim
24 words
A composite material as set forth in claim 13, wherein said surface layer has a contact angle with water of not less than 90°.
Claim 18
Dependent Claim
33 words
A composite material as set forth in claim 13, wherein said adhesive component is a polymer formed of a carbon compound and said protective component is a polymer formed of a nitrogen compound.
Claim 19
Dependent Claim
30 words
A composite material as set forth in claim 17, wherein said carbon compound is selected from the group consisting of ethylene, acetylene, propylene, butadiene, benzene, toluene, xylene, ethylbenzene, and styrene.
Claim 20
Dependent Claim
26 words
A composite material as set forth in claim 17, wherein said nitrogen compound is selected from the group consisting of acetonitrile, acrylonitrile, aniline, pyridine, and vinylpyridine.
Claim 21
Dependent Claim
41 words
A composite material as set forth in claim 17, wherein the adhesive component is formed of styrene and nitrogen and the protective component is formed of acrylonitrile and nitrogen, and the surface layer has a contact angle with water of 60°.
Claim 22
Dependent Claim
33 words
A composite material as set forth in claim 13, wherein said adhesive component is a polymer formed of a carbon compound and said protective component is a polymer formed of a silicon compound.
Claim 23
Dependent Claim
33 words
A composite material as set forth in claim 21, wherein the carbon compound is styrene and the silicon compound is hexamethyldisiloxane, and the surface layer has a contact angle with water of 90°.
Claim 24
Dependent Claim
40 words
A composite material as set forth in claim 21, wherein said silicon compound is selected from the group consisting of tetramethylsilane, trimethylmethoxysilane, dimethyldimethoxysilane, trimethoxymethylsilane, tetramethoxysilane, ethoxytrimethylsilane, diethoxydimethylsilane, triethoxymethylsilane, tetraethoxysilane, vinyltrimethysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltrichlorosilane, vinytriacetoxysilane, tetravinylsilane, hexamethyldisiloxane, hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane and tetrapropoxysilane.
Claim 25
Dependent Claim
30 words
A composite material as set forth in claim 21, wherein said carbon compound is selected from the group consisting of ethylene, acetylene, propylene, butadiene, benzene, toluene, xylene, ethylbenzene, and styrene.
Claim 26
Dependent Claim
112 words
A process for producing a composite material, comprising supplying a plasma reactor containing a substrate therein with a first raw material which forms an adhesive component upon plasma polymerization, continuously switching said first raw material to a second raw material which forms a protective component, whereby a composite material is produced, said composite material comprising a substrate and at least a single surface layer formed thereon, said surface layer having a structure wherein a first side contains a larger amount of said adhesive component than a second side of said surface layer, and said second side contains a larger amount of said protective component than said first side of said surface layer.
Claim 27
Dependent Claim
112 words
A process for producing a composite material, comprising supplying a plasma reactor containing a substrate therein with a first raw material which forms an adhesive component upon plasma polymerization, continuously switching said first raw material to a second raw material which forms a protective component, whereby a composite material is produced, said composite material comprising a substrate and at least a single surface layer formed thereon, said surface layer having a structure wherein a first side contains a larger amount of said adhesive component than a second side of said surface layer, and said second side contains a larger amount of said protective component than said first side of said surface layer.
Claim 28
Dependent Claim
31 words
A process for producing a composite material as set forth in claim 25, wherein said substrate is plastics and said plasma polymerization is performed in the presence of a non-polymerizing gas.
Claim 29
Dependent Claim
34 words
A process for producing a composite material as set forth in claim 26, wherein said non-polymerizing gas is selected from the group consisting of oxygen, nitrogen, argon, ammonia, water vapor, and a mixture thereof.
References Cited (Backward Citations)
US4517238A
Cited
US4545646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |