US4511701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat curable epoxy resin compositions and epoxy resin curing agents
Assignee: General Electric Co
•
Filing: 1984-02-27
•
Granted: 1985-04-16
•
Expires: 2004-02-27
Abstract
Abstract Curable epoxy resin compositions are provided resulting from the use of a silylnorbornane functional anhydride or imidoamine. The cured products show improved thermal and physical properties as compared to conventional curing agents.
Inventors
- 👤 Hong-Son Ryang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:08
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/423; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C08G59/4007; C08G59/4014; C08G59/4042; C08G59/4085
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
Curable epoxy resin compositions comprising (A) an epoxy resin and (B) an effective amount of organopolysiloxane curing agent having attached to silicon by carbon-silicon bonds at least one group of the formula, ##STR12## where R--R 5 are members selected from hydrogen, halogen, C.sub.(1-13) monovalent hydrocarbon radicals and substituted C.sub.(1-13) monovalent hydrocarbon radicals, Z is selected from --O-- and C--(R) 2 and Y is a member selected from --O-- and ##STR13## R 6 is a divalent C.sub.(1-13) hydrocarbon radical or substituted hydrocarbon radical and X is a monovalent amine radical.
Claim 2
Dependent Claim
89 words
Curable epoxy resin compositions comprising (A) an epoxy resin and (B) an effective amount of organopolysiloxane curing agent having attached to silicon by carbon-silicon bonds at least one group of the formula, ##STR12## where R--R 5 are members selected from hydrogen, halogen, C.sub.(1-13) monovalent hydrocarbon radicals and substituted C.sub.(1-13) monovalent hydrocarbon radicals, Z is selected from --O-- and C--(R) 2 and Y is a member selected from --O-- and ##STR13## R 6 is a divalent C.sub.(1-13) hydrocarbon radical or substituted hydrocarbon radical and X is a monovalent amine radical.
Claim 3
Dependent Claim
12 words
Tough elastomers resulting from the heat cure of compositions of claim 1.
References Cited (Backward Citations)
US2935488A
Cited
US3235620A
Cited
US3379653A
Cited
US3369055A
Cited
US3398211A
Cited
US3403199A
Cited
US3567797A
Cited
US3563850A
Cited
US3677995A
Cited
US3775442A
Cited
US4058401A
Cited
US4216288A
Cited
US4381396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |