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US3945953A
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ω,ω'-Bis-[4-amino-3-aminomethyl-piperidyl-(1)]-alkanes, process for their manufacture and their use
Assignee: Novartis Corp
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Filing: 1974-08-23
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Granted: 1976-03-23
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Expires: 1994-08-23
Abstract
Abstract ω,ω'-bis-[4-amino-3-aminomethyl-piperidyl-(1)]-alkanes of the general formula ##SPC1## Wherein n is a number from 2 to 6, are prepared by hydrogenating, a ω,ω'-bis-[4-amino-3-cyano-1,2,5,6-tetrahydro-pyridyl-(1)]-alkane at temperatures from 20° to 280°C. These polyamines are valuable hardeners for epoxide resins. They are also of interest as intermediates for organic syntheses.
Inventors
- 👤 Helmut Zondler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:38
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
53 words
A curable mixture which is suitable for the manufacture of moulded articles, impregnations, coatings and bonds, which contains a. one polyepoxide compound with on average more than one 1,2-epoxide group in the molecule, and b. as hardener a ω,ω'-bis[4-amino-3-aminomethyl-piperidyl-(1)]-alkane of the general formula ##SPC6## wherein n is a number from 2 to 6.
Claim 2
Dependent Claim
53 words
A curable mixture which is suitable for the manufacture of moulded articles, impregnations, coatings and bonds, which contains a. one polyepoxide compound with on average more than one 1,2-epoxide group in the molecule, and b. as hardener a ω,ω'-bis[4-amino-3-aminomethyl-piperidyl-(1)]-alkane of the general formula ##SPC6## wherein n is a number from 2 to 6.
Claim 3
Dependent Claim
39 words
A mixture according to claim 1, which contains for each equivalent of 1,2epoxide groups of the polyepoxide compound (a) 0.5 to 1.3 equivalents, preferably about 1 equivalent, of active hydrogen atoms bonded to nitrogen of the respective ω,ω'-bis-[4-amino-3-aminomethyl-piperidyl)-(1)]-alkane (b).
Claim 4
Dependent Claim
30 words
A mixture according to claim 1, which contains one polyepoxide compound (a) with on average more than one glycidyl, β-methylglycidyl or 2,3-epoxy-cyclopentyl group bonded to a heteroatom, in the molecule.
Claim 5
Dependent Claim
19 words
A mixture according to claim 1, which contains as polyepoxide compound (a) a polyglycidyl ether of a cycloaliphatic polyol.
Claim 6
Dependent Claim
16 words
Mixtures according to claim 4, which contain as polyepoxide compound the diglycidyl ether of 2,2-bis-(4'-hydroxycyclohexyl) -propane.
Claim 7
Dependent Claim
19 words
A mixture according to claim 1, which contains as polyepoxide compound (a) a polyglycidyl ether of a polyvalent phenol.
Claim 8
Dependent Claim
17 words
A mixture according to claim 6, which contains as polyepoxide compound (a) a polyglycidyl ether of 2,2-bis-(p-hydroxyphenyl)-propane.
Claim 9
Dependent Claim
19 words
A mixture according to claim 1, which contains as polyepoxide compound a N-glycidyl derivative of a heterocyclic nitrogen base.
Claim 10
Dependent Claim
27 words
A process for the manufacture of cured moulded articles, wherein a curable mixture according to claim 2 is cured at temperatures from 20°C to 160°C and moulded.
References Cited (Backward Citations)
US3717593A
Cited
US3718610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |