Patent US4026858A successfully refreshed from Google Patents.
US4026858A
Expired / Lapsed
US
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Curable epoxide resin compositions
Assignee: Novartis Corp
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Filing: 1975-10-28
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Granted: 1977-05-31
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Expires: 1995-10-28
Abstract
Abstract To accelerate the curing of an epoxide resin by means of an aromatic or cycloaliphatic polyamine there is incorporated magnesium, calcium, zinc, manganese, cobalt, or nickel perchlorate. Typically, from 0.2 to 2 parts by weight of the perchlorate is used per 100 parts of the combined weights of the epoxide resin and the polyamine.
Inventors
- 👤 Christopher Michael Andrews
- 👤 Bryan Dobinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:01
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/40; C08G59/50
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
61 words
A curable composition comprising (a) an epoxide resin (b) a curing amount of an aromatic or cycloaliphatic polyamine containing at least three hydrogen atoms per molecule attached to amino nitrogen atoms, at least two of which hydrogen atoms are attached to, respectively, aromatic or cycloaliphatic amino nitrogen, and (c) a perchlorate selected from magnesium, calcium, zinc, manganese, cobalt, and nickel perchlorates.
Claim 2
Dependent Claim
61 words
A curable composition comprising (a) an epoxide resin (b) a curing amount of an aromatic or cycloaliphatic polyamine containing at least three hydrogen atoms per molecule attached to amino nitrogen atoms, at least two of which hydrogen atoms are attached to, respectively, aromatic or cycloaliphatic amino nitrogen, and (c) a perchlorate selected from magnesium, calcium, zinc, manganese, cobalt, and nickel perchlorates.
Claim 3
Dependent Claim
34 words
The composition of claim 1, in which the polyamine contains no group or atom, other than aromatic or cycloaliphatic amino hydrogen atoms, capable of reaction with the epoxide resin under the curing conditions employed.
Claim 4
Dependent Claim
31 words
The composition of claim 1, containing from 0.2 to 2 parts by weight of the perchlorate (c) per 100 parts of the combined weights of the epoxide resin and the polyamine.
Claim 5
Dependent Claim
30 words
The composition of claim 1, in which the epoxide resin is a polyglycidyl ester, a poly(β-methylglycidyl) ester, a polyglycidyl ether, a poly(β-methylglycidyl) ether, or an N,N'-diglycidyl derivative of a hydantoin.
Claim 6
Dependent Claim
23 words
The composition of claim 1, in which the polyamine is bis(4-aminophenyl)methane, bis(4-aminophenyl) sulphone, bis(4-aminophenyl) ketone, bis(4-aminophenyl) ether, o-, m-, or p-phenylenediamine, or bis(4-amino-3-ethylphenyl)methane.
Claim 7
Dependent Claim
15 words
The composition of claim 1, in which the polyamine is bis(4-aminocyclohexyl)methane, bis(4-amino-3-methylcyclohexyl)methane, 2,2-bis(4-aminocyclohexyl)propane, or 3-aminomethyl-3,5,5-trimethylcyclohexylamine.
Claim 8
Dependent Claim
17 words
The composition of claim 1, in which the perchlorate (c) is dissolved in an inert organic solvent.
Claim 9
Dependent Claim
21 words
The composition of claim 7, in which the solvent is 2-methoxyethanol, ethylene glycol, diethylene glycol, N-methylpyrrolidone, γ-butyrolactone, or ethyl methyl ketone.
Claim 10
Dependent Claim
41 words
A two part pack, the components of which, on mixing, form a curable composition according to claim 1, one part containing the epoxide resin and the other part containing the polyamine, the perchlorate (c) being contained in one or both parts.
Claim 11
Dependent Claim
12 words
The cured product obtained by curing a composition according to claim 1.
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) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |