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US4366108A
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US
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Liquid matrix system based on a mixture of epoxide resin and an amine curing agent for producing fibre-reinforced plastics components
Assignee: Novartis Corp
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Filing: 1981-07-16
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Granted: 1982-12-28
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Expires: 2001-07-16
Abstract
Abstract Liquid polyglycidyl compounds, diethyltoluylenediamine, a curing accelerator and optionally further additives form a liquid matrix system with which fibres and fibre shapes are impregnated by known techniques, particularly by filament winding, pultrusion and injection processes. The components thus produced are for example tubes capable of withstanding pressure and torsional stress.
Inventors
- 👤 Karl Urech
- 👤 Jurgen Habermeier
- 👤 Roland Moser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:00
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5033; C08J2363/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
125 words
A liquid matrix system based on a mixture of epoxide resin and an amine curing agent for producing fibre-reinforced plastics components, which system is characterised in that it has at 40° C. a dynamic viscosity of less than 400 mPa s, and contains (a) a liquid diglycidyl ether of bisphenol-F or a mixture of liquid polyglycidyl compounds, (b) diethyltoluylenediamine as curing agent for the glycidyl compound, (c) BF 2 -acetoacetanilide as a curing accelerator, and (d) optionally additives, wherein to one epoxide group of the component (a) there are 0.8-1.2 aminohydrogen atoms of the component (b), and wherein 94-99.7 percent by weight of the component (b) and 0.3-6 percent by weight of the component (c), relative to the amount of (b) and (c), are present.
Claim 2
Dependent Claim
125 words
A liquid matrix system based on a mixture of epoxide resin and an amine curing agent for producing fibre-reinforced plastics components, which system is characterised in that it has at 40° C. a dynamic viscosity of less than 400 mPa s, and contains (a) a liquid diglycidyl ether of bisphenol-F or a mixture of liquid polyglycidyl compounds, (b) diethyltoluylenediamine as curing agent for the glycidyl compound, (c) BF 2 -acetoacetanilide as a curing accelerator, and (d) optionally additives, wherein to one epoxide group of the component (a) there are 0.8-1.2 aminohydrogen atoms of the component (b), and wherein 94-99.7 percent by weight of the component (b) and 0.3-6 percent by weight of the component (c), relative to the amount of (b) and (c), are present.
Claim 3
Dependent Claim
11 words
A matrix system according to claim 1, which contains no solvent.
Claim 4
Dependent Claim
18 words
A matrix system according to claim 1, which has a dynamic viscosity of less than 250 mPa s.
Claim 5
Dependent Claim
58 words
A matrix system according to claim 1, which contains a mixture of diglycidyl ether of bisphenol-F and bisphenol A, the epoxide content being 5.3-6.1 val/kg, and, relative to the total amount of component (a), additionally 3-15 percent by weight of an alkanediol-diglycidyl ether or 3-20 percent by weight of a polyglycidylated aromatic compound having amino and hydroxyl groups.
Claim 6
Dependent Claim
46 words
A matrix system according to claim 1, which contains the component (b) in an amount of 95-98 percent by weight, and the component (c) in an amount of 2-5 percent by weight, the percentage values being relative to the total amount of components (b) and (c).
Claim 7
Dependent Claim
40 words
A process for producing fibre-reinforcing plastics components, which process comprises using the matrix system according to claim 1 for impregnating fibre material, forming shaped articles by filament winding or by pultrusion and subsequently heating the shaped components at 100°-180° C.
Claim 8
Dependent Claim
18 words
A process according to claim 6, wherein glass fibres, carbon fibres or aramid fibres are impregnated and shaped.
References Cited (Backward Citations)
GB1034790A
Cited
US3793247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |