Patent US4304889A successfully refreshed from Google Patents.
US4304889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent resistant epoxy coatings
Assignee: Huntsman Corp
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Filing: 1980-07-11
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Granted: 1981-12-08
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Expires: 2000-07-11
Abstract
Abstract A solvent resistant epoxy resin composition comprises a vicinal polyepoxide, an aromatic polyamine and a condensation product of a polyoxyalkylenediamine of about 400 molecular weight or below with at least two moles of maleic anhydride.
Inventors
- 👤 Harold G. Waddill
- 👤 Heinz Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:31
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/56; C08L; C08L63/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
35 words
A chemically resistant epoxy resin composition comprising a vicinal polyepoxide, an aromatic polyamine and a condensation product of a polyoxyalkylenediamine of about 400 molecular weight or below with at least 2 moles of maleic anhydride.
Claim 2
Dependent Claim
35 words
A chemically resistant epoxy resin composition comprising a vicinal polyepoxide, an aromatic polyamine and a condensation product of a polyoxyalkylenediamine of about 400 molecular weight or below with at least 2 moles of maleic anhydride.
Claim 3
Dependent Claim
19 words
An epoxy resin composition of claim 1 wherein the aromatic polyamine is the condensation product of aniline and formaldehyde.
Claim 4
Dependent Claim
26 words
An epoxy resin composition as in claim 1 wherein the polyoxyalkylenediamine has the formula H.sub.2 NCH(CH.sub.3)CH.sub.2 --OCH.sub.2 CH(CH.sub.3)--.sub.x NH.sub.2 wherein x is about 5.6 or 2.6.
Claim 5
Dependent Claim
13 words
An epoxy resin composition as in claim 3 wherein x is about 5.6.
Claim 6
Dependent Claim
45 words
An epoxy resin composition comprising a vicinal polyepoxide, an aromatic polyamine which is the condensation product of aniline and formaldehyde and a condensation product of a polyoxyalkylenediamine of the formula H.sub.2 NCH(CH.sub.3)CH.sub.2 --OCH.sub.2 CH(CH.sub.3)--.sub.x NH.sub.2 wherein x is about 5.6 or 2.6 with maleic anhydride.
Claim 7
Dependent Claim
45 words
An epoxy resin composition comprising a vicinal polyepoxide, an aromatic polyamine which is the condensation product of aniline and formaldehyde and a condensation product of a polyoxyalkylenediamine of the formula H.sub.2 NCH(CH.sub.3)CH.sub.2 --OCH.sub.2 CH(CH.sub.3)--.sub.x NH.sub.2 wherein x is about 5.6 or 2.6 with maleic anhydride.
Claim 8
Independent Claim
47 words
A method for making a solvent resistant epoxy resin composition which comprises combining a vicinal polyepoxide, an aromatic polyamine and a condensation product of a polyoxyalkylenediamine of about 400 molecular weight or below with at least 2 moles of maleic anhydride and allowing the mixture to cure.
Claim 9
Independent Claim
47 words
A method for making a solvent resistant epoxy resin composition which comprises combining a vicinal polyepoxide, an aromatic polyamine and a condensation product of a polyoxyalkylenediamine of about 400 molecular weight or below with at least 2 moles of maleic anhydride and allowing the mixture to cure.
Claim 10
Dependent Claim
18 words
A method as in claim 6 wherein the aromatic polyamine is a condensation product of aniline and formaldehyde.
Claim 11
Dependent Claim
24 words
A method as in claim 6 wherein the polyoxyalkylenediamine has the formula H.sub.2 NCH(CH.sub.3)CH.sub.2 --OCH.sub.2 CH(CH.sub.3)--.sub.x NH.sub.2 wherein x is about 5.6 or 2.6.
Claim 12
Dependent Claim
11 words
A method as in claim 8 wherein x is about 5.6.
Claim 13
Independent Claim
59 words
A method for making a solvent resistant epoxy resin composition comprising mixing together a vicinal polyepoxide, an aromatic polyamine which is a condensation product of aniline and formaldehyde and a condensation product of a polyoxyalkylenediamine of the formula H.sub.2 NCH(CH.sub.3)CH.sub.2 --OCH.sub.2 CH(CH.sub.3)--.sub.x NH.sub.2 wherein x is about 5.6 or 2.6 with maleic anhydride and allowing the mixture to cure.
Claim 14
Independent Claim
59 words
A method for making a solvent resistant epoxy resin composition comprising mixing together a vicinal polyepoxide, an aromatic polyamine which is a condensation product of aniline and formaldehyde and a condensation product of a polyoxyalkylenediamine of the formula H.sub.2 NCH(CH.sub.3)CH.sub.2 --OCH.sub.2 CH(CH.sub.3)--.sub.x NH.sub.2 wherein x is about 5.6 or 2.6 with maleic anhydride and allowing the mixture to cure.
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) | 1984-12-07 | 1985-06-08 | 1985-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-07 | 1989-06-08 | 1989-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-07 | 1993-06-08 | 1993-12-08 | $7700.00 | Window Closed / Lapsed |