Patent US5390149A successfully refreshed from Google Patents.
US4179418A
Expired / Lapsed
US
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Water-based epoxy resin coating composition
Assignee: Huntsman Corp
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Filing: 1978-03-06
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Granted: 1979-12-18
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Expires: 1998-03-06
Abstract
Abstract A water based epoxy resin is disclosed. The epoxy resin is useful in protective coatings. It should have little or no utility in casting, encapsulating, etc. applications because of difficulty in removal of solvent, i.e., water. The cured epoxy resin is made by curing an epoxy resin of the polyhydric phenol, polyglycidyl ether type by combining the resin with a reactive water-compatible polyamide in an aqueous medium. The polyamide is prepared from fatty acids and an aminopropyl derivative of a polyoxyalkylenepolyamine.
Inventors
- 👤 Harold G. Waddill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:54
CPC Classifications
C; C09; C09D; C09D163/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
56 words
An epoxy resin composition being the cured product of a curable admixture which comprises: an epoxy resin comprising a condensation product of epichlorohydrin with 2,2-bis(p-hydroxyphenyl) propane , a curing amount of a reactive water compatible polyamide prepared from multifunctional carboxylic acids, esters, anhydrides or mixtures and an aminopropyl derivative of a polyoxyalkylenepolyamine and an aqueous medium.
Claim 2
Dependent Claim
56 words
An epoxy resin composition being the cured product of a curable admixture which comprises: an epoxy resin comprising a condensation product of epichlorohydrin with 2,2-bis(p-hydroxyphenyl) propane , a curing amount of a reactive water compatible polyamide prepared from multifunctional carboxylic acids, esters, anhydrides or mixtures and an aminopropyl derivative of a polyoxyalkylenepolyamine and an aqueous medium.
Claim 3
Dependent Claim
26 words
The composition of claim 1 wherein the carboxylic acid, ester or anhydride has from 18 to 54 carbon atoms and from 2 to 3 carboxyl groups.
Claim 4
Dependent Claim
11 words
The composition of claim 1 wherein the polyoxyalkylenepolyamine is a polyoxypropylenepolyamine.
Claim 5
Dependent Claim
36 words
The composition of claim 3 wherein the aminopropyl derivative of the polyoxypropylenepolyamine has the following general structure: H.sub.2 NCH.sub.2 CH.sub.2 CH.sub.2 NH(CH.sub.3)CH.sub.2 [OCH.sub.2 CH(CH.sub.3)].sub.x NHCH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2 wherein x is from about 2 to 6.
Claim 6
Dependent Claim
34 words
The composition of claim 1 wherein the mole ratio of the carboxylic acid, esters or anhydrides to the aminopropyl derivative of the polyoxyalkylenepolyamine is from about 1 to 1.8 to about 1 to 4.
Claim 7
Dependent Claim
51 words
An epoxy resin composition being the cured product of a curable admixture which comprises: an epoxy resin comprising a condensation product of epichlorohydrin with 2,2-bis(polyhydroxyphenyl) propane, a curing amount of a reactive water compatible polyamide prepared from multifunctional carboxylic acids and an aminopropyl derivative of a polyoxypropylenepolyamine and an aqueous medium.
Claim 8
Dependent Claim
51 words
An epoxy resin composition being the cured product of a curable admixture which comprises: an epoxy resin comprising a condensation product of epichlorohydrin with 2,2-bis(polyhydroxyphenyl) propane, a curing amount of a reactive water compatible polyamide prepared from multifunctional carboxylic acids and an aminopropyl derivative of a polyoxypropylenepolyamine and an aqueous medium.
Claim 9
Dependent Claim
23 words
The composition of claim 6 wherein the carboxylic acid has from 18 to 54 carbon atoms and from 2 to 3 carboxyl groups.
Claim 10
Dependent Claim
36 words
The composition of claim 6 wherein the aminopropyl derivative of the polyoxypropylenepolyamine has the following general structure: H.sub.2 NCH.sub.2 CH.sub.2 CH.sub.2 NH(CH.sub.3)CH.sub.2 [OCH.sub.2 CH(CH.sub.3)].sub.x NHCH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2 wherein x is from about 2 to 6.
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) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |