US4127514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for accelerated cure of epoxy resins
Assignee: Huntsman Corp
•
Filing: 1977-11-23
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Granted: 1978-11-28
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Expires: 1997-11-23
Abstract
Abstract A process for the accelerated cure of an epoxy resin is disclosed. The resulting epoxy resin may be used in protective coatings, adhesives, seamless and terrazo flooring and caulking and sealing compositions. The resulting resin is also useful, for example, in casting, potting, in escapulating, grouting and patching. The process involves mixing an epoxy resin of the polyhydric phenol, polyglycidyl ether type by mixing with an accelerator-hardener combination made up of (a) a liquid mixture of salicyclic acid and either iminobis(propylamine) or methyliminobis(propylamine) and (b) a polyoxyalkylenepolyamine and allowing the mixture to cure at ambient or elevated temperatures.
Inventors
- 👤 Harold G. Waddill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:04
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08L; C08L63/00
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
26 words
A process for accelerating the cure of an epoxy resin cured with a polyoxyalkylenepolyamine which comprises: incorporating therein an accelerator combination of salicylic acid and iminobis(propylamine).
Claim 2
Dependent Claim
26 words
A process for accelerating the cure of an epoxy resin cured with a polyoxyalkylenepolyamine which comprises: incorporating therein an accelerator combination of salicylic acid and iminobis(propylamine).
Claim 3
Dependent Claim
21 words
A process as in claim 1 wherein the weight ratio of iminobis(propylamine) to salicylic acid ranges from about 10/1 to 1/1.
Claim 4
Dependent Claim
38 words
A process as in claim 1 wherein the combined weight of the iminobis(propylamine) and salicylic acid ranges from about five parts by weight per 100 parts of the polyoxyalkylenepolyamine to about 30 parts by weight of the polyoxyalkylenepolyamine.
Claim 5
Dependent Claim
19 words
A process as in claim 1 wherein the curing temperature ranges from about 0° C. to about 45° C.
Claim 6
Dependent Claim
12 words
A process as in claim 1 wherein the polyoxyalkylenepolyamine is a polyoxypropylenepolyamine.
Claim 7
Dependent Claim
12 words
A process as in claim 5 wherein the polyoxypropylenepolyamine is a polyoxypropylenediamine.
Claim 8
Dependent Claim
18 words
A process as in claim 6 wherein the polyoxypropylenediamine has an equivalent weight per hydrogen of about 105.
Claim 9
Dependent Claim
26 words
A process for accelerating the cure of an epoxy resin cured with a polyoxyalkylenepolyamine which comprises: incorporating therein an accelerator combination of salicylic acid and methyliminobispropylamine.
Claim 10
Dependent Claim
26 words
A process for accelerating the cure of an epoxy resin cured with a polyoxyalkylenepolyamine which comprises: incorporating therein an accelerator combination of salicylic acid and methyliminobispropylamine.
Claim 11
Dependent Claim
21 words
A process as in claim 8 wherein the weight ratio of methyliminobis(propylamine) to salicylic acid ranges from about 10/1 to 1/1.
Claim 12
Dependent Claim
38 words
A process as in claim 8 wherein the combined weight of the methyliminobis(propylamine) and salicylic acid ranges from about five parts by weight per 100 parts of the polyoxyalkylenepolyamine to about 30 parts by weight of the polyoxyalkylenepolyamine.
Claim 13
Dependent Claim
19 words
A process as in claim 8 wherein the curing temperature ranges from about 0° C. to about 45° C.
Claim 14
Dependent Claim
12 words
A process as in claim 8 wherein the polyoxyalkylenepolyamine is a polyoxypropylenepolyamine.
Claim 15
Dependent Claim
12 words
A process as in claim 12 wherein the polyoxypropylenepolyamine is a polyoxypropylenediamine.
Claim 16
Dependent Claim
18 words
A process as in claim 13 wherein the polyoxypropylenediamine has an equivalent weight per hydrogen of about 105.
Claim 17
Dependent Claim
12 words
An accelerator combination for curing epoxy resin comprising salicylic acid and iminobis(propylamine).
Claim 18
Dependent Claim
12 words
An accelerator combination for curing epoxy resin comprising salicylic acid and iminobis(propylamine).
Claim 19
Dependent Claim
21 words
An accelerator combination of claim 15 wherein the weight ratio of iminobis(propylamine) to salicylic acid ranges from about 10/1 to 1/1.
Claim 20
Dependent Claim
12 words
An accelerator combination for curing epoxy resins comprising salicylic acid and methyliminobis(propylamine).
Claim 21
Dependent Claim
12 words
An accelerator combination for curing epoxy resins comprising salicylic acid and methyliminobis(propylamine).
Claim 22
Dependent Claim
21 words
An accelerator combination of claim 17 wherein the weight ratio of methyliminobis(propylamine) to salicylic acid ranges from about 10/1 to 1/1.
Claim 23
Dependent Claim
17 words
A cured epoxy resin composition made by combining an epoxy resin, a polyoxyalkylenepolyamine, salicylic acid and iminobis(propylamine).
Claim 24
Dependent Claim
17 words
A cured epoxy resin composition made by combining an epoxy resin, a polyoxyalkylenepolyamine, salicylic acid and iminobis(propylamine).
Claim 25
Dependent Claim
17 words
A cured epoxy resin composition made by combining an epoxy resin, a polyoxyalkylenepolyamine, salicylic acid and methyliminobis(propylamine).
Claim 26
Dependent Claim
17 words
A cured epoxy resin composition made by combining an epoxy resin, a polyoxyalkylenepolyamine, salicylic acid and methyliminobis(propylamine).
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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) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |