US3920768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arylimide-epoxy resin composites
Assignee: Union Carbide Corp
•
Filing: 1974-01-14
•
Granted: 1975-11-18
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Expires: 1994-01-14
Abstract
Abstract Arylimides prepared from oligomer diamines and polyamines and maleic anhydride have been blended with epoxy resins to provide compositions which can be cured to thermoset composites.
Inventors
- 👤 George T Kwiatkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:49
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042; Y; Y10; Y10S; Y10S525/00; Y10S525/906
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
20 words
THERMOSETRING RESIN COMPOSITION CONSISTING ESSENTIALLY OF A. ABOUT 5 TO ABOUT 95% BY WEIGHT OF AN ARYLIMIDE HAVING THE FORMULA:
Claim 2
Dependent Claim
20 words
THERMOSETRING RESIN COMPOSITION CONSISTING ESSENTIALLY OF A. ABOUT 5 TO ABOUT 95% BY WEIGHT OF AN ARYLIMIDE HAVING THE FORMULA:
Claim 3
Dependent Claim
8 words
Composition claimed in claim 1 wherein D is
Claim 4
Dependent Claim
13 words
Composition claimed in claim 2 wherein n is 3 and X is Cl.
Claim 5
Dependent Claim
8 words
Composition claimed in claim 1 wherein D is
Claim 6
Dependent Claim
12 words
Composition claimed in claim 1 wherein s and r are each 1.
Claim 7
Dependent Claim
12 words
Composition claimed in claim 1 wherein R'', R'''', R''0''''OR'''''''' are each H.
Claim 8
Dependent Claim
16 words
Composition claimed in claim 1 wherein the epoxy resin is a diglycidyl ether of 2,2-bis (p-hydroxyphenyl)propane
Claim 9
Dependent Claim
13 words
Composition claimed in claim 1 wherein the epoxy resin is an epoxylated novolak.
Claim 10
Dependent Claim
16 words
Composition claimed in claim 1 wherein the epoxy resin is a tetraglycidyl ether of tetra (p-hydroxyphenyl)ethane.
Claim 11
Dependent Claim
15 words
Composition claiMed in claim 1 wherein the epoxy resin is a triglycidyl ether of p-aminophenol.
References Cited (Backward Citations)
US3730948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |