US3964952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacture of composite materials consisting of carbon fibers and resin and materials manufactured in accordance with said method
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
•
Filing: 1974-03-01
•
Granted: 1976-06-22
•
Expires: 1994-03-01
Abstract
Abstract In a method of manufacture of composite materials consisting of carbon fibers and resin, a polymer is fixed on carbon fibers by means of a chemical bond and the fibers thus coated are then incorporated in a resin which is compatible with the polymer.
Inventors
- 👤 Michel Brie
- 👤 Gerard Riess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:28
CPC Classifications
D; D06; D06M; D06M14/00; D06M14/36; C; C08; C08F; C08F292/00; C08J; C08J5/00; C08J5/04; C08J5/0405; C08J5/042; C08J5/06; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/06; C08K9/00; C08K9/08; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/31504; Y10T428/31536
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
65 words
Process for the manufacture of composite materials of carbon fibers and resin comprising the steps of radical grafting a polymer on carbon fibers by covalent bond, obtaining the bond by creation of free radicals on the polymer by heat and transfer reaction of the radicals on the sites of the carbon fibers and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 2
Dependent Claim
65 words
Process for the manufacture of composite materials of carbon fibers and resin comprising the steps of radical grafting a polymer on carbon fibers by covalent bond, obtaining the bond by creation of free radicals on the polymer by heat and transfer reaction of the radicals on the sites of the carbon fibers and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 3
Dependent Claim
67 words
Process for the manufacture of composite materials of carbon fibers and resin comprising the steps of radical grafting a polymer on carbon fibers by covalent bond, obtaining the bond by creation of free radicals on the polymer by an oxydo-reducing system and transfer reaction of the radicals on the sites of the carbon fibers and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 4
Dependent Claim
67 words
Process for the manufacture of composite materials of carbon fibers and resin comprising the steps of radical grafting a polymer on carbon fibers by covalent bond, obtaining the bond by creation of free radicals on the polymer by an oxydo-reducing system and transfer reaction of the radicals on the sites of the carbon fibers and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 5
Dependent Claim
65 words
Process for the manufacture of composite materials of carbon fibers and resins comprising the steps of radical grafting a polymer on carbon fibers by covalent bond, obtaining the bond by creation of free radicals on the polymer by radiation and transfer reaction of the radicals on the sites of the carbon fibers and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 6
Dependent Claim
65 words
Process for the manufacture of composite materials of carbon fibers and resins comprising the steps of radical grafting a polymer on carbon fibers by covalent bond, obtaining the bond by creation of free radicals on the polymer by radiation and transfer reaction of the radicals on the sites of the carbon fibers and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 7
Dependent Claim
73 words
A process for the manufacture of a composite material of carbon fibers and resins comprising the steps of grafting a polymer on carbon fibers by an ionic bond selected from the group consisting of hydrogen bond, dipoledipole bond and saline bonds, obtaining the bond by first oxidizing the carbon fibers, placing the thus treated fibers in contact with the polymer and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 8
Dependent Claim
73 words
A process for the manufacture of a composite material of carbon fibers and resins comprising the steps of grafting a polymer on carbon fibers by an ionic bond selected from the group consisting of hydrogen bond, dipoledipole bond and saline bonds, obtaining the bond by first oxidizing the carbon fibers, placing the thus treated fibers in contact with the polymer and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 9
Dependent Claim
67 words
Process for the manufacture of a composite material of carbon fibers and resins comprising the steps of grafting a polymer on the carbon fibers by an ionic bond of the hydrogen bond type, obtaining the bond by first oxidizing the carbon fibers and then placing the thus treated fibers in contact with the polymer and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 10
Dependent Claim
67 words
Process for the manufacture of a composite material of carbon fibers and resins comprising the steps of grafting a polymer on the carbon fibers by an ionic bond of the hydrogen bond type, obtaining the bond by first oxidizing the carbon fibers and then placing the thus treated fibers in contact with the polymer and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 11
Dependent Claim
77 words
Process for the manufacture of composite materials of carbon fibers and resin comprising the steps of grafting a polymer on the carbon fibers by an ionic bond of the dipoledipole type, obtaining the bond by first oxidizing the carbon fibers, then salifying the superficial carboxylic functions thus obtained on the fibers, placing the fibers in contact with a polymer having partially salified carboxylic functions and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 12
Dependent Claim
77 words
Process for the manufacture of composite materials of carbon fibers and resin comprising the steps of grafting a polymer on the carbon fibers by an ionic bond of the dipoledipole type, obtaining the bond by first oxidizing the carbon fibers, then salifying the superficial carboxylic functions thus obtained on the fibers, placing the fibers in contact with a polymer having partially salified carboxylic functions and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 13
Dependent Claim
73 words
Process for the manufacture of composite materials of carbon fibers and resins comprising the steps of ionic grafting a polymer on the carbon fibers by a saline type bond, obtaining the bond by first oxidizing the carbon fibers, then salifying the thus treated fibers and the salifiable function of the polymer in the presence of a divalent or trivalent cation, and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 14
Dependent Claim
73 words
Process for the manufacture of composite materials of carbon fibers and resins comprising the steps of ionic grafting a polymer on the carbon fibers by a saline type bond, obtaining the bond by first oxidizing the carbon fibers, then salifying the thus treated fibers and the salifiable function of the polymer in the presence of a divalent or trivalent cation, and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 15
Dependent Claim
86 words
Process for the manufacture of composite materials of carbon fibers and resins comprising the steps of ionic grafting a polymer on the carbon fibers by a bond of the saline type, obtaining the bond by first oxidizing the carbon fibers, then salifying the superficial carboxylic functions thus created on the carbon fibers in the presence of a divalent or trivalent cation, and contacting the thus treated fibers with the polymer having salifiable functions and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 16
Dependent Claim
86 words
Process for the manufacture of composite materials of carbon fibers and resins comprising the steps of ionic grafting a polymer on the carbon fibers by a bond of the saline type, obtaining the bond by first oxidizing the carbon fibers, then salifying the superficial carboxylic functions thus created on the carbon fibers in the presence of a divalent or trivalent cation, and contacting the thus treated fibers with the polymer having salifiable functions and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 17
Dependent Claim
24 words
Process as described in claim 1, the polymer having polar groups selected from the groups consisting of anhydride, ester, hydroxyl, carboxylic, and nitrile groups.
Claim 18
Dependent Claim
38 words
Process as described in claim 1, the polymer being selected from the group consisting of the vinyl acetatevinyl chloride copolymer, the alternate maleic anhydridestyrene copolymer, the methyl methacrylate-maleic anhydride copolymer, the polyethylene-maleic anhydride copolymer and the polyvinyl-pyridine copolymer.
Claim 19
Dependent Claim
21 words
Process as described in claim 1, the resin being selected from the group consisting of the polyester, epoxy and polyimide resins.
Claim 20
Dependent Claim
24 words
Process as described in claim 4, the polymer having polar groups selected from the groups consisting of anhydride, ester, hydroxyl, carboxylic and nitrile groups.
Claim 21
Dependent Claim
38 words
Process as described in claim 4, the polymer being selected from the group consisting of the vinyl acetatevinyl chloride copolymer, the alternate maleic anhydridestyrene copolymer, the methyl methacrylate anhydride copolymer, the polyethylene-maleic anhydride copolymer and the polyvinylpyridine copolymer.
Claim 22
Dependent Claim
21 words
Process as described in claim 4, the resin being selected from the group consisting of the polyester, epoxy and polyimide resins.
Claim 23
Dependent Claim
70 words
A process for the manufacture of a composite material of carbon fibers and resins comprising the steps of grafting a polymer on the carbon fibers by an ionic bond of the hydrogen bond type, obtaining the bond by first oxidizing the carbon fibers and then placing the thus treated fibers in contact with the partially hydrolyzed polymer and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 24
Dependent Claim
70 words
A process for the manufacture of a composite material of carbon fibers and resins comprising the steps of grafting a polymer on the carbon fibers by an ionic bond of the hydrogen bond type, obtaining the bond by first oxidizing the carbon fibers and then placing the thus treated fibers in contact with the partially hydrolyzed polymer and then incorporating the grafted fibers in a resin compatible with the polymer.
Claim 25
Dependent Claim
24 words
Process as described in claim 2, the polymer having polar groups selected from the groups consisting of anhydride, ester, hydroxyl, carboxylic and nitrile groups.
Claim 26
Dependent Claim
38 words
Process as described in claim 2, the polymer being selected from the group consisting of the vinyl acetate-vinyl chloride copolymer, the alternate maleic anhydride-styrene copolymer, the methyl methacrylate anhydride copolymer, the polyethylene-maleic anhydride copolymer and the polyvinyl-pyridine copolymer.
Claim 27
Dependent Claim
21 words
Process as described in claim 2, the resin being selected from the group consisting of the polyester, epoxy, and polyimide resins.
Claim 28
Dependent Claim
24 words
Process as described in claim 3, the polymer having polar groups selected from the groups consisting of anhydride, ester, hydroxyl, carboxylic and nitrile groups.
Claim 29
Dependent Claim
38 words
Process as described in claim 3, the polymer being selected from the group consisting of the vinyl acetate-vinyl chloride copolymer, the alternate maleic anhydride-styrene copolymer, the methyl methacrylate anhydride copolymer, the polyethylene-maleic anhydride copolymer and the polyvinyl-pyridine copolymer.
Claim 30
Dependent Claim
21 words
Process as described in claim 3, the resin being selected from the group consisting of the polyester, epoxy and polyimide resins.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |