Patent AT355839B successfully refreshed from Google Patents.
Patent US4366302A successfully refreshed from Google Patents.
US4366302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imide-anhydrides and epoxy resin systems containing such compounds
Assignee: Lord Corp
•
Filing: 1981-06-15
•
Granted: 1982-12-28
•
Expires: 2001-06-15
Abstract
Abstract Imide-anhydrides having the structure ##STR1## wherein 1 and 2 are certain cycloaliphatic or aromatic groups and Z is selected from certain imide-anhydride and other substituents 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
2026-11-01 14:51
CPC Classifications
C; C07; C07D; C07D491/00; C07D491/02; C07D491/04; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
A room temperature-stable two-pack epoxy resin system consisting essentially of (a) a first pack comprising at least one imide-anhydride having the structure ##STR13## wherein R is selected from the group consisting of hydrogen, halogen, alkyl group having from 1 to 4 carbon atoms, hydroxyl, carboxyl and amine; with the proviso that, in all cases, either ##STR14## (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 anhydride.
Claim 2
Dependent Claim
86 words
A room temperature-stable two-pack epoxy resin system consisting essentially of (a) a first pack comprising at least one imide-anhydride having the structure ##STR13## wherein R is selected from the group consisting of hydrogen, halogen, alkyl group having from 1 to 4 carbon atoms, hydroxyl, carboxyl and amine; with the proviso that, in all cases, either ##STR14## (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 anhydride.
Claim 3
Dependent Claim
10 words
An epoxy resin system according to claim 1 wherein ##STR15##
Claim 4
Dependent Claim
12 words
An epoxy resin system according to claim 2 wherein Z is ##STR16##
Claim 5
Dependent Claim
10 words
An epoxy resin system according to claim 3 wherein ##STR17##
Claim 6
Dependent Claim
10 words
An epoxy resin system according to claim 3 wherein ##STR18##
Claim 7
Dependent Claim
28 words
An epoxy resin system according to claim 1 wherein the epoxy resin comprises at least one polyglycidyl aminophemol having the structure ##STR19## wherein m is 1 or 2.
Claim 8
Dependent Claim
10 words
An epoxy resin system according to claim 6 wherein ##STR20##
Claim 9
Dependent Claim
12 words
An epoxy resin system according to claim 7 wherein Z is ##STR21##
Claim 10
Dependent Claim
10 words
An epoxy resin system according to claim 8 wherein ##STR22##
Claim 11
Dependent Claim
10 words
An epoxy resin system according to claim 8 wherein ##STR23##
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) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |