Patent US4316003A successfully refreshed from Google Patents.
US4316003A
Expired / Lapsed
US
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Epoxy resin curing agents
Assignee: Resolution Performance Products LLC
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Filing: 1980-10-23
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Granted: 1982-02-16
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Expires: 2000-10-23
Abstract
Abstract An adduct suitable for curing epoxy resins, particularly in water-borne systems, comprises first reacting an epoxy resin, preferably a saturated epoxy resin, with a primary monoamine and then reacting the resulting condensate with a polyfunctional amine.
Inventors
- 👤 Mark F. Dante
- 👤 Roy A. Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:51
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G59/02; C08G59/10; C08G59/182; C08G59/184; C08G59/40; C08G59/50; C08G59/5006
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
73 words
An adduct suitable for curing epoxy resins prepared by (A) reacting (1) an epoxy compound containing more than one vicinal epoxy group per molecule with (2) a primary monoamine in the chemical equivalent ratio of epoxy groups to amine groups from about 2:1 to about 5:4, and then (B) reacting the resulting condensate with a polyfunctional amine in the chemical equivalent ratio of epoxy to amine groups from about 1:1.25 to about 1:3.0.
Claim 2
Dependent Claim
73 words
An adduct suitable for curing epoxy resins prepared by (A) reacting (1) an epoxy compound containing more than one vicinal epoxy group per molecule with (2) a primary monoamine in the chemical equivalent ratio of epoxy groups to amine groups from about 2:1 to about 5:4, and then (B) reacting the resulting condensate with a polyfunctional amine in the chemical equivalent ratio of epoxy to amine groups from about 1:1.25 to about 1:3.0.
Claim 3
Dependent Claim
17 words
The adduct of claim 1 wherein the epoxy compound is a diglycidyl ether of a polyhydric phenol.
Claim 4
Dependent Claim
16 words
The adduct of claim 2 wherein the epoxy compound is a diglycidyl ether of 2,2-bis(4-hydroxyphenyl) propane.
Claim 5
Dependent Claim
17 words
The adduct of claim 1 wherein the epoxy compound is a diglycidyl ether of hydrogenated 2,2-bis(4-hydroxyphenyl) propane.
Claim 6
Dependent Claim
31 words
The adduct of claim 1 wherein the primary monoamine has the general formula R--NH.sub.2 wherein R is an alkyl, aryl, alkaryl or alkanol radical containing up to about 20 carbon atoms.
Claim 7
Dependent Claim
11 words
The adduct of claim 5 wherein the primary monoamine is ethanolamine.
Claim 8
Dependent Claim
11 words
The adduct of claim 5 wherein the primary monoamine is butylamine.
Claim 9
Dependent Claim
11 words
The adduct of claim 5 wherein the primary monoamine is aniline.
Claim 10
Dependent Claim
11 words
The adduct of claim 5 wherein the primary monoamine is benzylamine.
Claim 11
Dependent Claim
12 words
The adduct of claim 5 wherein the primary monoamine is aminomethyl propanol.
Claim 12
Dependent Claim
45 words
The adduct of claim 1 wherein the polyfunctional amine has the general formula: NH.sub.2 --R--NH--R--.sub.x NH.sub.2 wherein each R is an alkyl, anyl or alkanyl radical of up to about 8 carbon atoms and x has a value of from about 0 to about 10.
Claim 13
Dependent Claim
11 words
The adduct of claim 11 wherein the polyfunctional amine is diethylenetriamine.
Claim 14
Dependent Claim
30 words
The adduct of claim 1 wherein the polyfunctional amine is a polyoxypropyleneamine of the general formula: ##STR7## wherein x has an approximate value of from about 2.5 to about 3.5.
Claim 15
Dependent Claim
17 words
A curable composition comprising an epoxy resin and a curing amount of the adduct of claim 1.
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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) | 1985-02-15 | 1985-08-17 | 1986-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-15 | 1989-08-17 | 1990-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-15 | 1993-08-17 | 1994-02-16 | $7700.00 | Window Closed / Lapsed |