Patent US4582886A successfully refreshed from Google Patents.
US4582886A
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Heat curable epoxy resin compositions and epoxy resin curing agents
Assignee: General Electric Co
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Filing: 1984-12-13
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Granted: 1986-04-15
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Expires: 2004-12-13
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 04:05
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4085; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C08G59/4014; C08G59/4042; C08G59/42; C08G59/423
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
77 words
Imidoaminonorbornane functional organosiloxane 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 , R 6 is a divalent hydrocarbon radical or substituted divalent hydrocarbon radical, R 7 is selected from C.sub.(1-13) monovalent hydrocarbon radicals and substituted monovalent hydrocarbon radicals, X is a monovalent amine radical and n is an integer equal to 1 to 2,000.
Claim 2
Dependent Claim
77 words
Imidoaminonorbornane functional organosiloxane 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 , R 6 is a divalent hydrocarbon radical or substituted divalent hydrocarbon radical, R 7 is selected from C.sub.(1-13) monovalent hydrocarbon radicals and substituted monovalent hydrocarbon radicals, X is a monovalent amine radical and n is an integer equal to 1 to 2,000.
Claim 3
Independent Claim
46 words
A method for making an epoxy curing agent which comprises, effecting reaction between a siloxane norbornane anhydride and a compound selected from the class consisting of N-(2-aminoethyl)-piperazine and 4-aminomethylpiperadine in the presence of an inert azeotroping organic solvent to effect the removal of water of reaction.
Claim 4
Independent Claim
46 words
A method for making an epoxy curing agent which comprises, effecting reaction between a siloxane norbornane anhydride and a compound selected from the class consisting of N-(2-aminoethyl)-piperazine and 4-aminomethylpiperadine in the presence of an inert azeotroping organic solvent to effect the removal of water of reaction.
Claim 5
Dependent Claim
6 words
A diamine having the formula, ##STR13##
Claim 6
Dependent Claim
6 words
A diamine having the formula, ##STR13##
Claim 7
Dependent Claim
6 words
A diamine having the formula, ##STR14##
Claim 8
Dependent Claim
6 words
A diamine having the formula, ##STR14##
References Cited (Backward Citations)
US4381396A
Cited
US4511701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |