US4861823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoset composition comprising aromatic cyanate ester of allyl ether of bisphenol
Assignee: BP Corp North America Inc
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Filing: 1988-08-03
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Granted: 1989-08-29
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Expires: 2008-08-03
Abstract
Abstract Novel curable resin compositions are disclosed containing an aromatic cyanate ester and an allyl ether of a bisphenol as a modifier. These compositions provide improved prepregs and composites. Additional modifiers including epoxy resins and bismaleimides may be included.
Inventors
- 👤 Shahid P. Qureshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:48
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08G; C08G73/00; C08G73/06; C08G73/0622; C08G73/0638; C08G73/10; C08G73/12; C08J; C08J5/00; C08J5/24; C08J5/241; C08J5/243
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
87 words
A curable composition comprising structural fiber, a thermoplastic polymer and a cyanate ester having the formula: R--(O--C.tbd.N).sub.m wherein m is an integer of from 2 to 5 and R is an aromatic radical, and at least one diallyl ether of a bisphenol having the following general formula: ##STR6## wherein B is selected from the group consisting of ##STR7## or B is a direct bond; x is independently selected from the group consisting of halogen and C 1 -C 6 alkyl groups; and n is 0 to 4.
Claim 2
Dependent Claim
87 words
A curable composition comprising structural fiber, a thermoplastic polymer and a cyanate ester having the formula: R--(O--C.tbd.N).sub.m wherein m is an integer of from 2 to 5 and R is an aromatic radical, and at least one diallyl ether of a bisphenol having the following general formula: ##STR6## wherein B is selected from the group consisting of ##STR7## or B is a direct bond; x is independently selected from the group consisting of halogen and C 1 -C 6 alkyl groups; and n is 0 to 4.
Claim 3
Dependent Claim
20 words
The composition of claim 1 wherein the thermoplastic polymer is selected from the group consisting of polycarbonates, polyesters, and polyarylates.
Claim 4
Dependent Claim
13 words
The composition of claim 1, wherein the thermoplastic polymer is a poly(aryl ether).
Claim 5
Dependent Claim
12 words
The composition of claim 1, wherein the thermoplastic polymer is a polycarbonate.
Claim 6
Dependent Claim
12 words
The composition of claim 1, wherein the thermoplastic polymer is a polyarylate.
Claim 7
Dependent Claim
13 words
The composition of claim 1, wherein the thermoplastic polymer is a polyester elastomer.
Claim 8
Dependent Claim
13 words
The composition of claim 1, wherein the structural fiber is a carbon fiber.
Claim 9
Dependent Claim
12 words
A prepreg comprising the composition of claim 1, and a structural fiber.
Claim 10
Dependent Claim
19 words
A cured composite comprising a thermoset resin obtained by curing the composition of claim 1 and a structural fiber.
Claim 11
Dependent Claim
38 words
A curable composition comprising: (a) mixture of a cyanate ester and a bismaleimide; (b) a diallyl ether of a bisphenol having the general formula set forth in claim 1; (c) a thermoplastic polymer; and (d) a structural fiber.
Claim 12
Dependent Claim
22 words
The composition of claim 10 wherein said thermoplastic polymer is selected from the group consisting of polycarbonates, polyesters, polyarylates, polyimides and polyarylethers.
Claim 13
Dependent Claim
12 words
The composition of claim 10 wherein said structural fiber is carbon fiber.
Claim 14
Dependent Claim
69 words
A fiber-reinforced, curable composition comprising a structural fiber and as a matrix resin, (a) 100 pbw of mixture of a cyanate resin and a bismaleimide in a weight ratio of from 1:to about 20:1, and a diallyl ether having the general formula set forth in claim 1; and (b) from 5 to 20 pbw of a thermoplastic selected from the group consisting of polycarbonates, polyesters, polyarylates, polyimides, and polyarylethers.
Claim 15
Dependent Claim
14 words
The fiber-reinforced composition of claim comprising from 20 to 80 wt % structural fiber.
Claim 16
Dependent Claim
23 words
The fiber-reinforced composition of claim 1 wherein said diallyl ether comprises from about 1 to about 40 wt. % of said matrix resin.
References Cited (Backward Citations)
US4774282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |