US4644039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis-maleimide resin systems and structural composites prepared therefrom
Assignee: Cytec Technology Corp
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Filing: 1986-03-14
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Granted: 1987-02-17
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Expires: 2006-03-14
Abstract
Abstract The use of organophosphines, organophosphonium salts or organophosphine complexes as cure catalysts in the cure of maleimide resin systems produces products having excellent physical properties and improved gel times. These systems are especially useful in the production of advanced structural composites.
Inventors
- 👤 Jack D. Boyd
- 👤 David A. Shimp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:15
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1003; C08J; C08J5/00; C08J5/24; C08J5/241; C08J5/243; C08J2379/00; C08J2379/04; C08J2379/08
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
41 words
A heat curable maleimide resin system comprising (a) a maleimide resin and (b) an amount of a catalyst selected from the group consisting of organophosphines, organophosphonium salts, or complexes thereof effective to accelerate the elevated temperature cure of said resin system.
Claim 2
Dependent Claim
41 words
A heat curable maleimide resin system comprising (a) a maleimide resin and (b) an amount of a catalyst selected from the group consisting of organophosphines, organophosphonium salts, or complexes thereof effective to accelerate the elevated temperature cure of said resin system.
Claim 3
Dependent Claim
30 words
The resin system of claim 1 wherein said catalyst is present in an amount of from 0.01 percent to about 5.0 percent by weight relative to the total resin system.
Claim 4
Dependent Claim
30 words
The resin system of claim 1 wherein said catalyst is present in an amount of from 0.05 percent to about 1.0 percent by weight relative to the total resin system.
Claim 5
Dependent Claim
12 words
The resin system of claim 1 wherein said maleimide is a bis-maleimide.
Claim 6
Dependent Claim
23 words
The resin system of claim 1, wherein said maleimide comprises a polyamino bis-maleimide prepared by reacting a bis-maleimide with one or more diamines.
Claim 7
Dependent Claim
29 words
The resin system of claim 5 wherein said diamine is selected from the group consisting of cyclohexanediamine, hexanediamine, phenylenediamine, toluenediamine, diaminodiphenylmethane, xylylenediamine, isophoronediamine, dodecanediamine, diaminodiphenyloxide, diaminodiphenylsulfide, and 3,3'- 4,4'-diaminodiphenylsulfone.
Claim 8
Dependent Claim
12 words
The resin system of claim 1, further comprising (c) an unsaturated co-monomer.
Claim 9
Dependent Claim
15 words
The resin system of claim 7 wherein said unsaturated co-monomer is a multiply unsaturated co-monomer.
Claim 10
Dependent Claim
27 words
The resin system of claim 8 wherein said multiply unsaturated co-monomer is a bis-unsaturated co-monomer selected from the group consisting of diallylphthalate, 2,2'-diallylbisphenol A, and 2,2'-dipropenylbisphenol A.
Claim 11
Dependent Claim
17 words
The resin system of claim 1, further comprising (c) an unsaturated co-monomer and (d) a diamine co-monomer.
Claim 12
Dependent Claim
28 words
The resin system of claim 10 wherein said diamine is selected from the group consisting of cyclohexanediamine, hexanediamine, phenylenediamine, toluenediamine, diaminodiphenylmethane, xylylenediamine, isophoronediamine, dodecanediamine, diaminodiphenylsulfide, diaminodiphenylsulfone and diaminodiphenyloxide.
Claim 13
Dependent Claim
14 words
The resin system of claim 10 wherein said unsaturated co-monomer is a bis-unsaturated co-monomer.
Claim 14
Dependent Claim
23 words
The resin system of claim 12 wherein said bis-unsaturated co-monomer is selected from the group consisting of diallylphthalate, 2,2'-diallylbisphenol A, and 2,2'-dipropenylbisphenol A.
Claim 15
Dependent Claim
49 words
The resin system of claim 10 wherein said diamine co-monomer is selected from the group consisting of cyclohexanediamine, hexanediamine, phenylenediamine, toluenediamine, diaminodiphenylmethane, xylyleediamine, isophoronediamine, dodecanediamine, diaminodiphenylsulfone and diaminodiphenyloxide, and wherein said unsaturated co-monomer is a bis-unsaturated co-monomer selected from the group consisting of diallylphthalate, 2,2'-diallylbisphenol A, and 2,2'-dipropenylbisphenol A.
Claim 16
Dependent Claim
19 words
The resin system of claim 14 wherein said maleimide comprises a mixture of the bis-maleimides of dodecanediamine and diaminodiphenylmethane.
Claim 17
Dependent Claim
28 words
The resin system of claim 14 wherein said maleimide comprises a mixture of the bis-maleimides of dodecanediamine and diaminodiphenylmethane and the reaction products of these bis-maleimides with diaminodiphenylmethane.
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) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |