US4195152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-Alkyl polyamines and curing of epoxy resins therewith
Assignee: Henkel Corp
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Filing: 1978-07-20
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Granted: 1980-03-25
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Expires: 1998-07-20
Abstract
Abstract There is disclosed a class of N-alkylpolyamines and their use as curing agents for epoxy resins, and in particular to such polyamines having the formula R--[NH(CH 2 ) x ] y --NHR' where R is an aliphatic hydrocarbon radical having from 5 through 8 carbon atoms, R' is H, R or R", x is an integer of 2 or 3 and y is an integer of 2-4. A monoepoxide adduct of the monoalkyl substituted polyamine is also disclosed wherein R" may then become an aliphatic substituent (2-14 carbon atoms) which may contain (a) an oxygen atom, (b) a hydroxyl group or (c) an aromatic substituent such as a phenyl ring.
Inventors
- 👤 Don E. Floyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:16
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/64; C08G59/50; C08G59/5006; C08G59/502
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
A composition comprising the reaction product of an epoxy resin having terminal epoxide group and an N-alkyl polyamine of the formula R--[NH(CH.sub.2).sub.x ].sub.y --NHR' where R is an aliphatic hydrocarbon radical having from 5-8 carbon atoms, x is an integer of 2 or 3, y is an integer of 2-4 and R' is H, R or R" where R" is an aliphatic hydrocarbon substituent having 2-14 carbon atoms with the proviso that R" may (a) contain an oxygen atom in the chain (b) contain a hydroxyl substituent (c) contain a phenyl substituent, or (d) contain any combination of (a), (b) and (c).
Claim 2
Dependent Claim
102 words
A composition comprising the reaction product of an epoxy resin having terminal epoxide group and an N-alkyl polyamine of the formula R--[NH(CH.sub.2).sub.x ].sub.y --NHR' where R is an aliphatic hydrocarbon radical having from 5-8 carbon atoms, x is an integer of 2 or 3, y is an integer of 2-4 and R' is H, R or R" where R" is an aliphatic hydrocarbon substituent having 2-14 carbon atoms with the proviso that R" may (a) contain an oxygen atom in the chain (b) contain a hydroxyl substituent (c) contain a phenyl substituent, or (d) contain any combination of (a), (b) and (c).
Claim 3
Dependent Claim
22 words
A composition as defined in claim 1 wherein said epoxy resin has an epoxy equivalent weight of from about 140 to 2000.
Claim 4
Dependent Claim
21 words
A composition as defined in claim 1 wherein said epoxy resin has an epoxy equivalent weight of about 140 to 300.
Claim 5
Dependent Claim
18 words
A composition as defined in claim 1 wherein the epoxy resin is a polyglycidyl ether of dihydric phenol.
Claim 6
Dependent Claim
11 words
A composition as defined in claim 1 wherein R is 4-methylpentyl-2.
Claim 7
Dependent Claim
11 words
A composition as defined in claim 1 wherein R is 4-methylhexyl-2.
Claim 8
Dependent Claim
11 words
A composition as defined in claim 1 wherein R is hexyl-2.
Claim 9
Dependent Claim
104 words
A process of curing an epoxy resin having terminal 1,2-epoxide groups comprising mixing said epoxy resin with an N-alkyl polyamine of the formula R--[NH(CH.sub.2).sub.x ].sub.y --NHR' where R is an aliphatic hydrocarbon radical having from 5-8 carbon atoms, x is an integer of 2 or 3, y is an integer of 2-4 and R' is H, R or R" where R" is an aliphatic hydrocarbon substituent having 2-14 carbon atoms with the proviso that R" may (a) contain an oxygen atom in the chain (b) contain a hydroxyl substituent (c) contain a phenyl substituent, or (d) contain any combination of (a), (b) and (c).
Claim 10
Dependent Claim
104 words
A process of curing an epoxy resin having terminal 1,2-epoxide groups comprising mixing said epoxy resin with an N-alkyl polyamine of the formula R--[NH(CH.sub.2).sub.x ].sub.y --NHR' where R is an aliphatic hydrocarbon radical having from 5-8 carbon atoms, x is an integer of 2 or 3, y is an integer of 2-4 and R' is H, R or R" where R" is an aliphatic hydrocarbon substituent having 2-14 carbon atoms with the proviso that R" may (a) contain an oxygen atom in the chain (b) contain a hydroxyl substituent (c) contain a phenyl substituent, or (d) contain any combination of (a), (b) and (c).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-25 | 1983-09-24 | 1984-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-25 | 1987-09-24 | 1988-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-25 | 1991-09-24 | 1992-03-25 | $7700.00 | Window Closed / Lapsed |