US4195153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-crystallizing epoxy resin accelerator
Assignee: Huntsman Corp
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Filing: 1978-10-19
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Granted: 1980-03-25
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Expires: 1998-10-19
Abstract
Abstract A novel epoxy resin curing accelerator comprises a mixture of N-aminoethylpiperazine (AEP) and triethanolamine (TEA). The resins comprise a vicinal polyepoxide, a curing agent, and an amount of AEP/TEA mixture effective for accelerating the cure of the polyepoxide. The accelerator combination is synergistic for accelerating the curing of an epoxy resin cured with an amine at ambient or elevated temperatures. The epoxy resin products are useful in protective coatings, adhesives, seamless and terrazzo flooring, castings, laminates, and in grouting, potting, encapsulating, caulking and sealing compositions.
Inventors
- 👤 Harold G. Waddill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:42
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/686; C08L; C08L63/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
35 words
As a composition of matter, an accelerator combination that is synergistic for accelerating the curing of a polyglycidyl ether of a polyhydric phenol cured with an amine, said accelerator combination comprising N-aminoethylpiperazine and an alkanolamine.
Claim 2
Dependent Claim
35 words
As a composition of matter, an accelerator combination that is synergistic for accelerating the curing of a polyglycidyl ether of a polyhydric phenol cured with an amine, said accelerator combination comprising N-aminoethylpiperazine and an alkanolamine.
Claim 3
Dependent Claim
28 words
An accelerator combination of claim 1 wherein said alkanolamine is selected from the group consisting of mono-, di-, or triethanolamine, hydroxy ethoxyethylamine, N-aminoethylethanolamine, N,N-bis(hydroxypropyl), N-hydroxyethylamine, and mixtures thereof.
Claim 4
Dependent Claim
11 words
An accelerator combination of claim 1 wherein the alkanolamine is triethanolamine.
Claim 5
Dependent Claim
19 words
An accelerator combination of claim 1 wherein the weight ratio of N-aminoethylpiperazine to triethanolamine is about 90:10 to 10:90.
Claim 6
Dependent Claim
49 words
In a process for curing a polyglycidyl ether of a polyhydric phenol with an amine curing agent by combining a polyglycidyl ether of a polyhydric phenol with an amine curing agent, the improvement which comprises: accelerating said curing by addition of an accelerator combination of N-aminoethylpiperazine and an alkanolamine.
Claim 7
Dependent Claim
49 words
In a process for curing a polyglycidyl ether of a polyhydric phenol with an amine curing agent by combining a polyglycidyl ether of a polyhydric phenol with an amine curing agent, the improvement which comprises: accelerating said curing by addition of an accelerator combination of N-aminoethylpiperazine and an alkanolamine.
Claim 8
Dependent Claim
39 words
A process according to claim 5 wherein the accelerator combination of N-aminoethylpiperazine and alkanolamine is added in an amount of between about 1 to 100 parts by combined weight per 100 parts by weight of said amine curing agent.
Claim 9
Dependent Claim
14 words
A process according to claim 5 wherein said amine curing agent is a polyoxypropylenediamine.
Claim 10
Dependent Claim
15 words
A process according to claim 5 wherein the alkanolamine is a mono-, di-, or triethanolamine.
Claim 11
Dependent Claim
20 words
A process according to claim 7 wherein said polyoxyalkylenediamine has an average molecular weight of about 230 to about 400.
Claim 12
Dependent Claim
38 words
A process according to claim 9 wherein the accelerator combination is N-aminoethylpiperazine and triethanolamine and is added in an amount of between about 1 to 100 parts by combined weight per 100 parts by weight of said polypropylenediamine.
Claim 13
Dependent Claim
38 words
The process of claim 5 wherein said alkanolamine is triethanolamine, said polyoxyalkylenepolyamine is a polyoxypropylenediamine having an average molecular weight of about 400 and the ratio of N-aminoethylpiperazine to triethanolamine added is between 90:10 to 10:90 by weight.
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) | 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 |