Patent US4161980A successfully refreshed from Google Patents.
Patent US4164520A successfully refreshed from Google Patents.
US4164520A
Expired / Lapsed
US
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Accelerated cure of epoxy resins
Assignee: Huntsman Corp
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Filing: 1978-07-24
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Granted: 1979-08-14
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Expires: 1998-07-24
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 system 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 with a novel accelerator-hardener which is a condensation product of phenol, formaldehyde and an aminoalkylene derivative of a polyoxyalkylenepolyamine.
Inventors
- 👤 Harold G. Waddill
- 👤 Howard P. Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:02
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/621; C08G59/623; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G14/14; C08L; C08L63/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
41 words
A process for curing epoxy resins comprising: mixing an epoxy resin with about a stoichiometric amount of a condensation product of phenol, formaldehyde and an aminoalkylene derivative of a polyoxyalkylenepolyamine made by reacting a polyoxyalkylene polyamine with acrylonitrile followed by hydrogenation.
Claim 2
Dependent Claim
41 words
A process for curing epoxy resins comprising: mixing an epoxy resin with about a stoichiometric amount of a condensation product of phenol, formaldehyde and an aminoalkylene derivative of a polyoxyalkylenepolyamine made by reacting a polyoxyalkylene polyamine with acrylonitrile followed by hydrogenation.
Claim 3
Dependent Claim
19 words
A process as in claim 1 wherein the curing takes place from about 0° C. to about 45° C.
Claim 4
Dependent Claim
20 words
A process as in claim 2 wherein a post cure is employed at a temperature up to about 200° C.
Claim 5
Dependent Claim
20 words
A process as in claim 1 wherein the aminoalkylene derivative of a polyoxyalkylenepolyamine is an aminopropylene derivative of a polyoxypropylenepolyamine.
Claim 6
Dependent Claim
43 words
A process for curing epoxy resins comprising: mixing an epoxy resin with about a stoichiometric amount of a condensation product of a phenolic compound, an aldehyde and an aminoalkylene derivative of a polyoxyalkylenepolyamine made by reacting a polyoxyalkylenepolyamine with acrylonitrile followed by hydrogenation.
Claim 7
Dependent Claim
43 words
A process for curing epoxy resins comprising: mixing an epoxy resin with about a stoichiometric amount of a condensation product of a phenolic compound, an aldehyde and an aminoalkylene derivative of a polyoxyalkylenepolyamine made by reacting a polyoxyalkylenepolyamine with acrylonitrile followed by hydrogenation.
Claim 8
Dependent Claim
19 words
A process as in claim 5 wherein the curing takes place from about 0° C. to about 45° C.
Claim 9
Dependent Claim
20 words
A process as in claim 6 wherein a post cure is employed at a temperature up to about 200° C.
Claim 10
Dependent Claim
35 words
A cured epoxy resin composition made by mixing an epoxy resin with a condensation product of phenol, formaldehyde and an aminoalkylene derivative of a polyoxyalkylenepolyamine made by reacting a polyoxyalkylenepolyamine with acrylonitrile followed by hydrogenation.
Claim 11
Dependent Claim
35 words
A cured epoxy resin composition made by mixing an epoxy resin with a condensation product of phenol, formaldehyde and an aminoalkylene derivative of a polyoxyalkylenepolyamine made by reacting a polyoxyalkylenepolyamine with acrylonitrile followed by hydrogenation.
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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) | 1982-08-13 | 1983-02-12 | 1983-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-13 | 1987-02-12 | 1987-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-13 | 1991-02-12 | 1991-08-14 | $7700.00 | Window Closed / Lapsed |