Patent US4340715A successfully refreshed from Google Patents.
US4340715A
Expired / Lapsed
US
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Epoxy resin compositions cured with imide-amines
Assignee: GERLACH INDUSTRIES Inc A CORP OF
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Filing: 1981-05-26
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Granted: 1982-07-20
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Expires: 2001-05-26
Abstract
Abstract Imide-amines having the structure ##STR1## wherein ##STR2## are certain cycloaliphatic or aromatic groups and R and R individually are hydrogen, halogen, an alkyl group having from 1 to 4 carbon atoms, hydroxy, carboxyl, and amine and when taken together represent ##STR3## wherein R 2 is the same as R and R 1 , have been found to provide cured epoxy resin systems characterized by high temperature stability and excellent mechanical and physical properties.
Inventors
- 👤 Raj N. Gounder
- 👤 John T. Geary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:34
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
148 words
A room temperature-stable two-pack epoxy resin system consisting essentially of (a) a first pack comprising at least one imide-imine having the structure ##STR21## wherein -- 1 -- is a divalent cycloaliphatic or aromatic radical selected from the group consisting of ##STR22## is a tetravalent cycloaliphatic or aromatic radical selected from the group consisting of ##STR23## R and R 1 can be the same or different and each is selected from the group consisting of hydrogen, halogen, alkyl group having from 1 to 4 carbon atoms, hydroxyl, carboxyl and amine and when taken together, R and R 1 are: ##STR24## wherein R 2 is the same as R and R 1 ; with the proviso that, in all cases, ##STR25## (b) a second pack comprising an epoxy resin substantially free of active hydrogen having a 1,2 epoxy equivalent value of greater than 1 and capable of solubilizing said imide-amine.
Claim 2
Dependent Claim
148 words
A room temperature-stable two-pack epoxy resin system consisting essentially of (a) a first pack comprising at least one imide-imine having the structure ##STR21## wherein -- 1 -- is a divalent cycloaliphatic or aromatic radical selected from the group consisting of ##STR22## is a tetravalent cycloaliphatic or aromatic radical selected from the group consisting of ##STR23## R and R 1 can be the same or different and each is selected from the group consisting of hydrogen, halogen, alkyl group having from 1 to 4 carbon atoms, hydroxyl, carboxyl and amine and when taken together, R and R 1 are: ##STR24## wherein R 2 is the same as R and R 1 ; with the proviso that, in all cases, ##STR25## (b) a second pack comprising an epoxy resin substantially free of active hydrogen having a 1,2 epoxy equivalent value of greater than 1 and capable of solubilizing said imide-amine.
Claim 3
Dependent Claim
10 words
An epoxy resin system according to claim 1 wherein ##STR26##
Claim 4
Dependent Claim
10 words
An epoxy resin system according to claim 2 wherein ##STR27##
Claim 5
Dependent Claim
10 words
An epoxy resin system according to claim 1 wherein ##STR28##
Claim 6
Dependent Claim
10 words
An epoxy resin system according to claim 4 wherein ##STR29##
Claim 7
Dependent Claim
32 words
An epoxy resin system according to claim 1 wherein R and R taken together is ##STR30## is as previously defined and R 2 is the same as R and R 1 .
Claim 8
Dependent Claim
29 words
An epoxy resin system according to claim 1 wherein R and R 1 taken together is ##STR31## wherein R 2 is the same as R and R 1 .
Claim 9
Dependent Claim
28 words
An epoxy resin system according to claim 1 wherein the epoxy resin comprises at least one polyglycidyl amino-phenol having the structure ##STR32## wherein m is 1 or 2.
Claim 10
Dependent Claim
10 words
An epoxy resin system according to claim 8 wherein ##STR33##
Claim 11
Dependent Claim
10 words
An epoxy resin system according to claim 9 wherein ##STR34##
Claim 12
Dependent Claim
10 words
An epoxy resin system according to claim 8 wherein ##STR35##
Claim 13
Dependent Claim
10 words
An epoxy resin system according to claim 11 wherein ##STR36##
Claim 14
Dependent Claim
15 words
An epoxy resin system according to claim 8 wherein the imide-amine has the structure ##STR37##
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) | 1985-07-19 | 1986-01-18 | 1986-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-19 | 1990-01-18 | 1990-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-19 | 1994-01-18 | 1994-07-20 | $7700.00 | Window Closed / Lapsed |