Patent US3718610A successfully refreshed from Google Patents.
US3718610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable mixtures of epoxide resins and piperidine derivatives
Assignee: Novartis AG
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Filing: 1971-03-17
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Granted: 1973-02-27
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Expires: 1991-03-17
Abstract
Abstract Curable moulding compositions, coating compositions and adhesive compositions which contain a polyepoxide compound, for example a liquid polyglycidyl ether of bisphenol A, and, as the curing agent, a substituted 4-amino-3-aminomethyl-piperidine for example 1-methyl-4-amino-3-aminomemethylpiperidine. The curing of the curable mixtures according to the invention to give shaped articles and the like is appropriately carried out in the temperature range of 20* to 150* C.
Inventors
- 👤 H Zondler
- 👤 W Pfleiderer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:15
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08G59/5053; C08G59/506
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
15 words
A composition as claimed in claim 1, which contains 1-methyl-4-amino-3-aminomethylpiperidine as the curing agent (b).
Claim 2
Dependent Claim
15 words
A composition as claimed in claim 1, which contains 1-n-butyl-4-amino-3-aminomethylpiperidine as the curing agent (b).
Claim 3
Dependent Claim
15 words
A composition as claimed in claim 1, which contains 1-isopropyl-4-amino-3-aminomethylpiperidine as the curing agent (b).
Claim 4
Dependent Claim
15 words
A composition as claimed in claim 1, which contains 1-cyclohexyl-4-amino-3-aminomethylpiperidine as the curing agent (b).
Claim 5
Dependent Claim
15 words
A composition as claimed in claim 1, which contains 1-benzyl-4-amino-3-aminomethylpiperidine as the curing agent (b).
Claim 6
Dependent Claim
34 words
A composition as claimed in claim 1, which contains a polyepoxide (a) with an average of more than one glycidyl group, Beta -methyl-glycidyl group or 2,3-epoxycyclopentyl group, bonded to a hetero-atom, in the molecule.
Claim 7
Dependent Claim
20 words
A composition as claimed in claim 1, which contains a polyglycidyl ether of a polyhydric phenol as the polyepoxide (a).
Claim 8
Dependent Claim
18 words
A composition as claimed in claim 8, which contains a polyglycidyl ether of 2,2-bis-(p-hydroxyphenyl)-propane as the polyepoxide (a).
Claim 9
Dependent Claim
20 words
A composition as claimed in claim 1, which contains a polyglycidyl ether of a cycloaliphatic polyol as the polyepoxide (a).
Claim 10
Dependent Claim
18 words
A composition as claimed in claim 10, which contains a polyglycidyl ether of 2,2-bis-(p-hydroxycyclohexyl)-propane as the polyepoxide (a).
Claim 11
Dependent Claim
20 words
A composition as claimed in claim 1, which contains a polyglycidyl ester of a polycarboxylic acid as the polyepoxide (a).
Claim 12
Dependent Claim
24 words
A composition as claimed in claim 12, which contains the diglycidyl ester of Delta 4 -tetrahydrophthalic acid or hexahydrophthalic acid as the polyepoxide (a).
References Cited (Backward Citations)
US3544590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |