US4142034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resin compositions containing an amine-cyanic acid ester combination curing agent
Assignee: Milacron Inc
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Filing: 1978-04-10
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Granted: 1979-02-27
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Expires: 1998-04-10
Abstract
Abstract Epoxy resin compositions comprising a) a 1,2-epoxide compound containing two or more 1,2-epoxide groups per molecule, b) a cyanic acid ester having two or more cyanic ester groups per molecule, and c) an organic amine are provided.
Inventors
- 👤 Gene E. Schroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:26
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/50; C08G59/56
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
30 words
An epoxy composition comprising a) a poly(1,2-epoxide) and in synergistic combination, b) an organic amine having at least two amine hydrogens per molecule, and c) a cyanic acid ester compound.
Claim 2
Dependent Claim
30 words
An epoxy composition comprising a) a poly(1,2-epoxide) and in synergistic combination, b) an organic amine having at least two amine hydrogens per molecule, and c) a cyanic acid ester compound.
Claim 3
Dependent Claim
58 words
An epoxy composition according to claim 1 wherein the cyanic acid ester is a compound having the following general formula R(O--C.tbd.N).sub.x where R is an aromatic radical optionally containing bridging members and having a free valence equal to x, x is an integer of at least 2 and each (O--C.tbd.N) group is always bonded to an aromatic nucleus.
Claim 4
Dependent Claim
16 words
An epoxy composition according to claim 2 wherein x is an integer from 2 to 6.
Claim 5
Dependent Claim
24 words
An epoxy composition according to claim 2 wherein the organic amine is an organic amine having one or more primary amine groups per molecule.
Claim 6
Dependent Claim
20 words
An epoxy composition according to claim 2 wherein the organic amine has at least two secondary amine groups per molecule.
Claim 7
Dependent Claim
27 words
An epoxy composition according to claim 2 wherein the organic amine has at least one primary amine group and at least one secondary amine group per molecule.
Claim 8
Dependent Claim
23 words
An epoxy composition according to claims 1, 2, 3, 4, 5 or 6 wherein the cyanic acid ester has a methylene bridging group.
Claim 9
Dependent Claim
27 words
An epoxy composition according to claims 1, 2, 3, 4, 5 or 6 wherein the cyanic acid ester compound is a cyanic acid ester of 2,2-bis(4-hydroxyphenyl) propane.
Claim 10
Dependent Claim
18 words
An epoxy composition according to claims 4, 5 or 6 wherein the organic amine is an aliphatic amine.
Claim 11
Dependent Claim
18 words
An epoxy composition according to claims 4, 5 or 6 wherein the organic amine is an aromatic amine.
Claim 12
Dependent Claim
18 words
An epoxy composition according to claims 4, 5 or 6 wherein the organic amine is an aralkyl amine.
Claim 13
Dependent Claim
17 words
Epoxy compositions according to claims 4, 5 or 6 wherein the organic amine is an alkaryl amine.
Claim 14
Dependent Claim
16 words
Epoxy compositions according to claim 4 wherein the organic amine is normally liquid at room temperature.
Claim 15
Dependent Claim
16 words
Epoxy compositions according to claim 5 wherein the organic amine is normally liquid at room temperature.
Claim 16
Dependent Claim
16 words
Epoxy compositions according to claim 6 wherein the organic amine is normally liquid at room temperature.
Claim 17
Dependent Claim
11 words
An epoxy composition according to claim 2 wherein x is 2.
References Cited (Backward Citations)
US3420794A
Cited
US3562214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |