US3855157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable mixtures of epoxide resins and piperidine derivatives
Assignee: Novartis AG
•
Filing: 1973-09-06
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Granted: 1974-12-17
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Expires: 1993-09-06
Abstract
Abstract Curable moulding, coating and adhesive compositions which contain a polyepoxide compound, for example a liquid polyglycidyl ether of bisphenol A, and 3,3-bis-( gamma -aminopropyl)piperidine or 2-methyl-3,3-bis-( gamma -aminopropyl)-piperidine as the curing agent. The curing of the moulding compositions can be effected in the temperature range of 20* - 150*C. The mouldings possess good flexural strengths and deflections and are distinguished by exceptionally outstanding heat distortion.
Inventors
- 👤 H Zondler
- 👤 W Pfleiderer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:15
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08G59/5053; C08G59/506
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
34 words
A COMPOSITION OF MATTER WHICH COMPRISES 8A) A 1,2POLYEPOXIDE COMPOUND WITH AN AVERAGE OF MORE THAN ONE EPOXIDE GROUNF IN THE MOLECULE AND (B) AS THE CURING AGENT, A 3,3-BIS(Y-AMINOPROPYL)-PIPERIDINE OF THE GENERAL FORMULA
Claim 2
Dependent Claim
34 words
A COMPOSITION OF MATTER WHICH COMPRISES 8A) A 1,2POLYEPOXIDE COMPOUND WITH AN AVERAGE OF MORE THAN ONE EPOXIDE GROUNF IN THE MOLECULE AND (B) AS THE CURING AGENT, A 3,3-BIS(Y-AMINOPROPYL)-PIPERIDINE OF THE GENERAL FORMULA
Claim 3
Dependent Claim
17 words
A composition as claimed in claim 1, which contains 2-methyl-3,3-bis-( gamma -aminopropyl)-piperidine as the curing agent (b).
Claim 4
Dependent Claim
17 words
A composition as claimed in claim 1, which contains 3,3-bis-( gamma -aminopropyl)-piperidine as the curing agent (b).
Claim 5
Dependent Claim
36 words
A composition as claimed in claim 1, which contains a polyepoxide compound (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 6
Dependent Claim
21 words
A composition as claimed in claim 1, which contains a polyglycidyl ether of a polyhydric phenol as the polyepoxide compound (a).
Claim 7
Dependent Claim
19 words
A composition as claimed in claim 5, which contains a polyglycidyl ether of 2,2-bis-(p-hydroxyphenyl)-propane as the polyepoxide compound (a).
Claim 8
Dependent Claim
21 words
A composition as claimed in claim 1, which contains a polyglycidyl ether of a cycloaliphatic polyol as the polyepoxide compound (a).
Claim 9
Dependent Claim
19 words
A composition as claimed in claim 7, which contains the diglycidyl ether of 2,2-bis-(4''-hydroxycyclohexyl)-propane as the polyepoxide compound (a).
Claim 10
Dependent Claim
18 words
A composition as claimed in claim 1, which contains tetrahydrophthalic acid diglycidyl ester as the polyepoxide compound (a).
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |