Patent US4374214A successfully refreshed from Google Patents.
US4374214A
Expired / Lapsed
US
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Imide containing blends and polymeric compositions prepared therefrom
Assignee: General Electric Co
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Filing: 1981-03-03
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Granted: 1983-02-15
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Expires: 2001-03-03
Abstract
Abstract Resins are obtained from blends of epoxide and imide containing or derived compounds, which have good resistance to mechanical deformation at elevated temperatures and good adhesion to inorganic materials such as metals and ceramics. These resins are particularly useful for making composite materials and molded articles.
Inventors
- 👤 Fred F. Holub
- 👤 John T. Hoback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:54
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C08G73/121
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
70 words
Curable compositions comprising by weight, (A) an epoxy resin prepared from epichlorohydrin and bisphenol-A, (B) from about 0.2 to about 0.5 parts of a bismaleimide per part of (A), (C) from about 0.2 to about 0.5 part per part of (A) of an arylene diamine selected from the class consisting of metaphenylene diamine and para,para-methylene dianiline and (D) and 0.01-5% by weight of the curable composition of an organic peroxide.
Claim 2
Dependent Claim
70 words
Curable compositions comprising by weight, (A) an epoxy resin prepared from epichlorohydrin and bisphenol-A, (B) from about 0.2 to about 0.5 parts of a bismaleimide per part of (A), (C) from about 0.2 to about 0.5 part per part of (A) of an arylene diamine selected from the class consisting of metaphenylene diamine and para,para-methylene dianiline and (D) and 0.01-5% by weight of the curable composition of an organic peroxide.
Claim 3
Dependent Claim
10 words
A glass fiber filled composition in accordance with claim 1.
Claim 4
Dependent Claim
19 words
A curable composition in accordance with claim 1, where the bismaleimide is prepared from maleic anhydride and p,p-methylene dianiline.
Claim 5
Dependent Claim
15 words
A curable composition in accordance with claim 1, where the bismaleimide has the formula, ##STR19##
Claim 6
Dependent Claim
15 words
A curable composition in accordance with claim 1, where the organic peroxide is dicumyl peroxide.
References Cited (Backward Citations)
US3875113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-14 | 1986-08-16 | 1987-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-14 | 1990-08-16 | 1991-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-14 | 1994-08-16 | 1995-02-15 | $7700.00 | Window Closed / Lapsed |