US5087657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber-reinforced composites toughened with resin particles
Assignee: BP Corp North America Inc
•
Filing: 1989-02-23
•
Granted: 1992-02-11
•
Expires: 2009-02-23
Abstract
Abstract Layered, fiber-reinforced composites are toughened by the use of thermosetting matrix resins including polyphenylene ether particles. The method of the invention is particularly effective in improving the toughness of composites based on thermoset matrix resins.
Inventors
- 👤 Shahid P. Qureshi
- 👤 Richard H. Newman-Evans
- 👤 Hugh C. Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:21
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/18; B32B27/20; B32B27/06; B32B27/08; B32B27/28; B32B27/285; B32B27/286; B32B27/32; B32B27/34; C; C08; C08L; C08L63/00; B32B2262/00; B32B2262/10; B32B2262/101; B32B2262/106; B32B2371/00; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
63 words
A composition comprising from about 20 to about 80 we %, based on final composition, of a continuous fiber reinforcement, and a curable matrix resin formulation comprising a cycloaliphatic epoxy ether resin and from 1 to about 25 wt % of said formulation of polyphenylene ether resin particles having a smallest dimension in the range of from about 1 to about 75 microns.
Claim 2
Dependent Claim
63 words
A composition comprising from about 20 to about 80 we %, based on final composition, of a continuous fiber reinforcement, and a curable matrix resin formulation comprising a cycloaliphatic epoxy ether resin and from 1 to about 25 wt % of said formulation of polyphenylene ether resin particles having a smallest dimension in the range of from about 1 to about 75 microns.
Claim 3
Dependent Claim
16 words
The composition of claim 1 wherein said polyphenylene ether resin particles comprise a polymer of 2,6-dialkylphenol.
Claim 4
Dependent Claim
16 words
The composition of claim 1 wherein said polyphenylene ether resin particles comprise a polymer of 2,6-dimethylphenol.
Claim 5
Dependent Claim
15 words
The composition of claim 1 wherein said continuous fiber reinforcement is continuous carbon fiber reinforcement.
Claim 6
Dependent Claim
42 words
The composition of claim 1 wherein said matrix resin comprises 100 pbw of said cycloaliphatic-epoxy ether, from 6 to about 150 pbw of an amine hardener, and from 0 to about 30 pbw of a thermoplastic polymer dissolved in said epoxy resin.
Claim 7
Dependent Claim
20 words
The composition of claim 2, said matrix resin being capable of forming a substantially single, continuous, rigid phase upon curing.
Claim 8
Dependent Claim
23 words
The composition of claim 5 wherein said thermoplastic polymer is selected from the group consisting of polyaryl ethers, polyether imides and phenoxy resins.
Claim 9
Dependent Claim
13 words
The composition of claim 5 wherein said thermoplastic polymer is a polyaryl sulfone.
Claim 10
Dependent Claim
125 words
A composition comprising from about 20 to about 80 wt %, based on final composition, of a continuous carbon fiber reinforcement, and a curable matrix resin formulation comprising: (a) from 99 to about 75 wt % of an epoxy resin formulation comprising 100 pbw of a cycloaliphatic epoxy ether, from about 6 to about 150 pbw of a diamine hardener and from about 0 to about 30 pbw of a thermoplastic polymer soluble in said epoxy resin formulation and selected from the group consisting of polyaryl ethers, polyether imides and phenoxy resins; and (b) from 1 to about 25 wt % particles comprising ak polymer of a 2,6-dialkylphenol, said particles having a smallest dimension in the range of from about 1 to about 75 microns.
Claim 11
Dependent Claim
125 words
A composition comprising from about 20 to about 80 wt %, based on final composition, of a continuous carbon fiber reinforcement, and a curable matrix resin formulation comprising: (a) from 99 to about 75 wt % of an epoxy resin formulation comprising 100 pbw of a cycloaliphatic epoxy ether, from about 6 to about 150 pbw of a diamine hardener and from about 0 to about 30 pbw of a thermoplastic polymer soluble in said epoxy resin formulation and selected from the group consisting of polyaryl ethers, polyether imides and phenoxy resins; and (b) from 1 to about 25 wt % particles comprising ak polymer of a 2,6-dialkylphenol, said particles having a smallest dimension in the range of from about 1 to about 75 microns.
Claim 12
Dependent Claim
13 words
The composition of claim 9 wherein said particles comprise a polymer of 2,6-dimethylphenol.
Claim 13
Dependent Claim
13 words
The composition of claim 9 wherein said thermoplastic polymer is a polyaryl sulfone.
Claim 14
Dependent Claim
13 words
The composition of claim 9 wherein said thermoplastic polymer is a polyether imide.
References Cited (Backward Citations)
GB1306231A
Cited
JPS49132669A
Cited
US4517321A
Cited
US4608404A
Cited
EP0133280A2
Cited
US4579885A
Cited
US4604319A
Cited
US4604319B1
Cited
US4656208A
Cited
US4686250A
Cited
EP0252725A2
Cited
US4783506A
Cited
US4680076A
Cited
EP0274899A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |