Patent US3855174A successfully refreshed from Google Patents.
US3855174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacture of composite materials consisting of carbon fibers and resin and materials thus obtained
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
•
Filing: 1973-12-20
•
Granted: 1974-12-17
•
Expires: 1993-12-20
Abstract
Abstract In a method of manufacture of composite materials consisting of carbon fibers and resin, a block or graft copolymer is fixed on carbon fibers and the fibers thus treated are then incorporated in a resin which is compatible with a single type of sequence of the copolymer.
Inventors
- 👤 M Brie
- 👤 G Riess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:23
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08G; C08G83/00; C08G83/001; D; D06; D06M; D06M14/00; D06M14/36; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2933; Y10T428/2962; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31667; Y10T428/31855; Y10T428/31909; Y10T428/31924
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
135 words
A METHOD OF MANUFACTURE OF A COMPOSITE MATERIAL OF CARBON FIBRES AND RESIN COMPRISING THE STEPS OF OXIDIZING AND SALIFYING THE CARBON FIBRES, THEN FIXING ON THE TREATED CARBON FIBRES BY AN IONIC BOND A BLOCK OF GRAFT COPOLYMER OF TWO DIFFERENT POLYMERS WHICH ARE INCOMPATIBLE WITTH EACH OTHER, THE FIRST OF THESE POLYMERS BEING AN ELASTOMER SELECTED FROM THE GROUP CONSISTING OF POLYISOPRENE, POLYBUTADIENE, POLY (BUTADIENE-CO-ACRYLIC ACID), (BUTADIENE-CO-METHACRYLICACID), POLYISOBUTYLENE, POLYISLOXANES AND POLARYLATES, THE SECOND POLYMER BEING SELECTED FROM THE GROUP CONISTING VINCYL ACETATE-VINCYL CHLORIDE COPOLYMER, ALTERNATE MALEIC ANHYDRIDESTYRENE COPOLYMER, MALEIC ANHYDRIDE-POLYETHYLENE COPOLYMER AND POLYVINCYLPYRIDINE COPOLYMER, THE IONIC BOND BEING SELECTED FROM THE GROUP COMSISTING OF A HYDROGEN BOND, A DIPOLE DIPOLE BOND AND A SALINE BOND AND THEN INCORPORATING THE FIBERS THUS TREATED IN A RESIN COMPATIBLE WITH THE SECOND POLYMER OF THE COPOLYMERS.
Claim 2
Independent Claim
135 words
A METHOD OF MANUFACTURE OF A COMPOSITE MATERIAL OF CARBON FIBRES AND RESIN COMPRISING THE STEPS OF OXIDIZING AND SALIFYING THE CARBON FIBRES, THEN FIXING ON THE TREATED CARBON FIBRES BY AN IONIC BOND A BLOCK OF GRAFT COPOLYMER OF TWO DIFFERENT POLYMERS WHICH ARE INCOMPATIBLE WITTH EACH OTHER, THE FIRST OF THESE POLYMERS BEING AN ELASTOMER SELECTED FROM THE GROUP CONSISTING OF POLYISOPRENE, POLYBUTADIENE, POLY (BUTADIENE-CO-ACRYLIC ACID), (BUTADIENE-CO-METHACRYLICACID), POLYISOBUTYLENE, POLYISLOXANES AND POLARYLATES, THE SECOND POLYMER BEING SELECTED FROM THE GROUP CONISTING VINCYL ACETATE-VINCYL CHLORIDE COPOLYMER, ALTERNATE MALEIC ANHYDRIDESTYRENE COPOLYMER, MALEIC ANHYDRIDE-POLYETHYLENE COPOLYMER AND POLYVINCYLPYRIDINE COPOLYMER, THE IONIC BOND BEING SELECTED FROM THE GROUP COMSISTING OF A HYDROGEN BOND, A DIPOLE DIPOLE BOND AND A SALINE BOND AND THEN INCORPORATING THE FIBERS THUS TREATED IN A RESIN COMPATIBLE WITH THE SECOND POLYMER OF THE COPOLYMERS.
Claim 3
Dependent Claim
23 words
A method according to claim 1, wherein the resin is selected from the group consisting of the polyesters, the epoxy resins, the polyimides.
Claim 4
Dependent Claim
24 words
A method according to claim 1, the copolymer being of the A-B block type, B being fixed at the end of chain of A.
Claim 5
Dependent Claim
27 words
A method according to claim 1, the copolymer being of the A-B graft type, in which B is in the form of grafts on the sequence A.
Claim 6
Dependent Claim
14 words
A method according to claim 1, the copolymer being of the A-B-A block type.
Claim 7
Dependent Claim
13 words
A method according to claim 1, the copolymer being the B-A-B block type.
Claim 8
Dependent Claim
41 words
A method according to claim 1, wherein A represents a polymer sequence capable of forming a chemical bond with the carbon fiber and B represents a sequence selectively compatible with the resin and forming a chemical bond with the carbon fiber.
Claim 9
Dependent Claim
24 words
A method according to claim 4, wherein the sequence A is first fixed on the fiber, the sequence B being then grafted onto A.
Claim 10
Dependent Claim
26 words
A method according to claim 8, wherein the sequence A is fixed on the fiber by means of covalent bonds formed by radical or ionic grafting.
Claim 11
Dependent Claim
20 words
A method according to claim 8, wherein the sequence B is grafted onto the sequence A by a covalent bond.
Claim 12
Dependent Claim
19 words
A method according to claim 8, wherein the sequence B is grafted onto the sequence A by ionic bonds.
Claim 13
Dependent Claim
34 words
A method according to claim 3, wherein the preformed block copolymer A-B is fixed directly on the fiber by means of the sequence A with the aid of covalent bonds formed by anionic grafting.
Claim 14
Dependent Claim
38 words
A method according to claim 3, wherein the preformed block copolymer A-B is fixed directly on the fiber by means of the sequence A with the aid of a hydrogen bond, a dipole-dipole bond, or a saline bond.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |