US4760106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact resistant matrix resins for advanced composites
Assignee: BP Corp North America Inc
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Filing: 1987-01-08
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Granted: 1988-07-26
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Expires: 2007-01-08
Abstract
Abstract Described herein is a composition which contains a specific group of hardeners, an epoxy resin and a thermoplastic polymer. When combined with a structural fiber the composition produces composites which have improved impact resistance, improved tensile properties and high compressive properties.
Inventors
- 👤 Hugh C. Gardner
- 👤 Michael J. Michno, Jr.
- 👤 George L. Brode
- 👤 Robert J. Cotter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:25
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/504; C08L; C08L63/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31525
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
A composition comprising: (a) from 5 to 60 wt% of a diamine hardener represented by the following general formula: ##STR13## wherein the X's are independently selected from a direct bond, O, S, SO 2 , CO, COO, C(CF 3 ) 2 , C(CR 1 R 2 ) 2 wherein R 1 and R 2 are independently hydrogen or alkyl of 1 to 4 carbon atoms, (b) from 10 to 60 wt% of an epoxy resin containing two or more 1,2-epoxy groups per molecule, and (c) from 1 to 25 wt% of a thermoplastic polymer, and which contains a structural fiber selected from carbon, glass, silicon carbide, poly(benzothiazole), poly(benzimidazole), poly(benzoxazole), alumina, titania, boron, and aromatic polyamides.
Claim 2
Dependent Claim
115 words
A composition comprising: (a) from 5 to 60 wt% of a diamine hardener represented by the following general formula: ##STR13## wherein the X's are independently selected from a direct bond, O, S, SO 2 , CO, COO, C(CF 3 ) 2 , C(CR 1 R 2 ) 2 wherein R 1 and R 2 are independently hydrogen or alkyl of 1 to 4 carbon atoms, (b) from 10 to 60 wt% of an epoxy resin containing two or more 1,2-epoxy groups per molecule, and (c) from 1 to 25 wt% of a thermoplastic polymer, and which contains a structural fiber selected from carbon, glass, silicon carbide, poly(benzothiazole), poly(benzimidazole), poly(benzoxazole), alumina, titania, boron, and aromatic polyamides.
Claim 3
Dependent Claim
89 words
A composition comprising: (a) from 5 to 60 wt% of a diamine hardener represented by the following general formula: ##STR14## wherein the X's are independently selected from a direct bond, O, S, SO 2 , CO, COO, C(CF 3 ) 2 , C(CR 1 R 2 ) 2 wherein R 1 and R 2 are independently hydrogen or alkyl of 1 to 4 carbon atoms, (b) from 10 to 60 wt% of bis(2,3-epoxycyclopentyl)ether, and (c) from 1 to 25 wt% of a thermoplastic polymer, which contains a structural fiber.
Claim 4
Dependent Claim
89 words
A composition comprising: (a) from 5 to 60 wt% of a diamine hardener represented by the following general formula: ##STR14## wherein the X's are independently selected from a direct bond, O, S, SO 2 , CO, COO, C(CF 3 ) 2 , C(CR 1 R 2 ) 2 wherein R 1 and R 2 are independently hydrogen or alkyl of 1 to 4 carbon atoms, (b) from 10 to 60 wt% of bis(2,3-epoxycyclopentyl)ether, and (c) from 1 to 25 wt% of a thermoplastic polymer, which contains a structural fiber.
Claim 5
Dependent Claim
104 words
A prepreg comprising: (a) from 5 to 60 wt% of a diamine hardener represented by the following general formula: ##STR15## wherein the X's are independently selected from a direct bond, O, S, SO 2 , CO, COO, C(CF 3 ) 2 , C(CR 1 R 2 ) 2 wherein R 1 and R 2 are independently hydrogen or alkyl of 1 to 4 carbon atoms, (b) from 10 to 60 wt% of an epoxy resin containing two or more 1,2-epoxide groups per molecule, (c) from 1 to 25 wt% of a thermoplastic polymer and (d) from 5 to 85 wt% of a structural fiber.
Claim 6
Dependent Claim
104 words
A prepreg comprising: (a) from 5 to 60 wt% of a diamine hardener represented by the following general formula: ##STR15## wherein the X's are independently selected from a direct bond, O, S, SO 2 , CO, COO, C(CF 3 ) 2 , C(CR 1 R 2 ) 2 wherein R 1 and R 2 are independently hydrogen or alkyl of 1 to 4 carbon atoms, (b) from 10 to 60 wt% of an epoxy resin containing two or more 1,2-epoxide groups per molecule, (c) from 1 to 25 wt% of a thermoplastic polymer and (d) from 5 to 85 wt% of a structural fiber.
Claim 7
Dependent Claim
17 words
A prepreg as defined in claim 3 which contains an accelerator which increases the rate of cure.
Claim 8
Dependent Claim
107 words
A composite comprising: (a) from 10 to 60 wt% of a cured epoxy resin containing two or more 1,2-epoxide groups per molecule hardened with (b) from 5 to 60 wt% of a diamine hardener represented by the following general formula: ##STR16## wherein the X's are independently selected from a direct bond, O, S, SO 2 , CO, COO, C(CF 3 ) 2 , C(CR 1 R 2 ) 2 wherein R 1 and R 2 are independently hydrogen or alkyl of 1 to 4 carbon atoms, (c) from 1 to 25 wt% of a thermoplastic polymer, and (d) from 5 to 85 wt% of a structural fiber.
Claim 9
Dependent Claim
107 words
A composite comprising: (a) from 10 to 60 wt% of a cured epoxy resin containing two or more 1,2-epoxide groups per molecule hardened with (b) from 5 to 60 wt% of a diamine hardener represented by the following general formula: ##STR16## wherein the X's are independently selected from a direct bond, O, S, SO 2 , CO, COO, C(CF 3 ) 2 , C(CR 1 R 2 ) 2 wherein R 1 and R 2 are independently hydrogen or alkyl of 1 to 4 carbon atoms, (c) from 1 to 25 wt% of a thermoplastic polymer, and (d) from 5 to 85 wt% of a structural fiber.
Claim 10
Dependent Claim
25 words
A composite as defined in claim 5 wherein the epoxy resin was cured in the presence of an accelerator which increased the rate of cure.
References Cited (Backward Citations)
GB1306231A
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US3819472A
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US4115296A
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JPS5398400A
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JPS5464599A
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JPS55155703A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |