US4743647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prepreg resin from aromatic bismaleimide and ethylenically unsaturated coreactant
Assignee: BP Corp North America Inc
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Filing: 1986-12-18
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Granted: 1988-05-10
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Expires: 2006-12-18
Abstract
Abstract Described herein are novel bismaleimides and prepregable resin compositions comprising these bismaleimides and one or more liquid coreactants and optionally, one or more other additives. The novel bismaleimides, such as alpha, alpha-bis-(4-maleimidophenyl)-meta-diisopropylbenzene, are characterized by the presence of three aromatic rings in the molecular structure and in some respects optimize the desirable characteristics of the one or two and four atomatic ring-containing bismaleimides in resins prepared therefrom.
Inventors
- 👤 Linda A. Domeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:45
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/444; C07D207/448; C07D207/452; C08; C08F; C08F283/00; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042; C08G59/50; C08G59/56; C08J; C08J5/00; C08J5/24; C08J5/241; C08J5/243; C08J5/249; C08J2379/00; C08J2379/04; C08J2379/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
77 words
A composition comprising: (a) a bismaleimide of the formula: ##STR19## wherein Ar represents an aromatic nucleus; R is hydrogen, halogen or alkyl and R 1 is independently-selected alkyl or halogen groups; R 2 represents an alkyl group of from 1 to 12 carbon atoms; and n has a value of from 0 to 4; and (b) a liquid co-reactant selected from the group consisting of, copolymerizable allylic compounds, copolymerizable vinylic compounds, copolymerizable acrylic compounds, and mixtures thereof.
Claim 2
Dependent Claim
77 words
A composition comprising: (a) a bismaleimide of the formula: ##STR19## wherein Ar represents an aromatic nucleus; R is hydrogen, halogen or alkyl and R 1 is independently-selected alkyl or halogen groups; R 2 represents an alkyl group of from 1 to 12 carbon atoms; and n has a value of from 0 to 4; and (b) a liquid co-reactant selected from the group consisting of, copolymerizable allylic compounds, copolymerizable vinylic compounds, copolymerizable acrylic compounds, and mixtures thereof.
Claim 3
Dependent Claim
10 words
The composition of claim 1, further comprising a thermoplastic polymer.
Claim 4
Dependent Claim
58 words
A composition comprising a bis-maleimide of the formula: ##STR20## wherein Ar represents an aromatic nucleus; R is hydrogen, halogen or alkyl and R 1 is independently selected alkyl or halogen groups; R 2 represents an alkyl group of from 1 to 12 carbon atoms; and n has a value of from 0 to 4; and an allylic compound.
Claim 5
Dependent Claim
58 words
A composition comprising a bis-maleimide of the formula: ##STR20## wherein Ar represents an aromatic nucleus; R is hydrogen, halogen or alkyl and R 1 is independently selected alkyl or halogen groups; R 2 represents an alkyl group of from 1 to 12 carbon atoms; and n has a value of from 0 to 4; and an allylic compound.
Claim 6
Dependent Claim
10 words
The composition of claim 3, further comprising a thermoplastic polymer.
Claim 7
Dependent Claim
10 words
The composition of claim 3 further comprising a structural fiber.
Claim 8
Dependent Claim
14 words
The composition of claim 3 further comprising a thermoplastic resin and a structural fiber.
Claim 9
Dependent Claim
13 words
The composition of claim 3 wherein the allyic compound is o,o'-diallyl bisphenol A.
Claim 10
Dependent Claim
10 words
The composition of claim 7, further comprising a structural fiber.
Claim 11
Dependent Claim
12 words
The composition of claim 7, further comprising a carbon fiber structural fiber.
Claim 12
Dependent Claim
22 words
A composition comprising a bismaleimide selected from the group consisting of: 2,2'-bis(4-maleimidophenyl)-meta-diisopropylbenzene, 2,2'-bis-(4-maleimidophenyl)para-diisopropylbenzene, 4,4'-bis-(3-maleimidophenoxy)diphenyl sulfone, and mixtures thereof; and an allylic compound.
Claim 13
Dependent Claim
22 words
A composition comprising a bismaleimide selected from the group consisting of: 2,2'-bis(4-maleimidophenyl)-meta-diisopropylbenzene, 2,2'-bis-(4-maleimidophenyl)para-diisopropylbenzene, 4,4'-bis-(3-maleimidophenoxy)diphenyl sulfone, and mixtures thereof; and an allylic compound.
Claim 14
Dependent Claim
13 words
The composition of claim 10, wherein said allylic compound is o,o'-diallyl bisphenol A.
Claim 15
Dependent Claim
10 words
The composition of claim 10, further comprising a structural fiber.
Claim 16
Dependent Claim
9 words
The composition of claim 10, further comprising a thermoplastic.
References Cited (Backward Citations)
US4654407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |