Patent US4461879A successfully refreshed from Google Patents.
US4461879A
Expired / Lapsed
US
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Curable saturated polyepoxide-triglycidyl cyanurate compositions
Assignee: Shell USA Inc
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Filing: 1982-05-10
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Granted: 1984-07-24
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Expires: 2002-05-10
Abstract
Abstract The present invention is particularly directed to a coating composition exhibiting faster cure times and improved physical properties which comprise (1) from about 60% to about 95% by weight of a saturated epoxy resin, (2) from about 5% to about 40% by weight of triglycidyl cyanurate (or triglycidyl thiocyanurate) and (3) a curing amount of an epoxy curing agent, preferably an amino-containing curing agent.
Inventors
- 👤 Ronald S. Bauer
- 👤 Larry S. Corley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:35
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/20; C08G59/32; C08G59/38
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
71 words
A curable composition comprising (1) from about 60 to about 95 parts by weight of a saturated polyepoxide having the structural formula: ##STR4## wherein n has a value so that the average molecular weight of the saturated polyepoxide is from about 350 to about 2500, (2) from about 5 to about 40 parts by weight of triglycidyl cyanurate or triglycidyl thiocyanurate and (3) a curing amount of an epoxy curing agent.
Claim 2
Dependent Claim
71 words
A curable composition comprising (1) from about 60 to about 95 parts by weight of a saturated polyepoxide having the structural formula: ##STR4## wherein n has a value so that the average molecular weight of the saturated polyepoxide is from about 350 to about 2500, (2) from about 5 to about 40 parts by weight of triglycidyl cyanurate or triglycidyl thiocyanurate and (3) a curing amount of an epoxy curing agent.
Claim 3
Dependent Claim
21 words
The composition of claim 1 wherein the weight ratio of polyepoxide to triglycidyl cyanurate is from about 90:10 to about 70:30.
Claim 4
Dependent Claim
17 words
The composition of claim 1 wherein the saturated polyepoxide is a hydrogenated glycidyl ether of 2,2-bis(4-hydroxyphenyl) propane.
Claim 5
Dependent Claim
15 words
The composition of claim 1 wherein the saturated polyepoxide is a glycidyl ether of 2,2-bis(4-cyclohexanol)propane.
Claim 6
Dependent Claim
14 words
The composition of claim 1 wherein the epoxy curing agent is an amino-containing compound.
Claim 7
Dependent Claim
13 words
The composition of claim 5 wherein the amino-containing compound is an aliphatic amine.
Claim 8
Dependent Claim
12 words
The composition of claim 5 wherein the amino-containing compound is a polyamide.
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) | 1987-07-24 | 1988-01-23 | 1988-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-24 | 1992-01-23 | 1992-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-24 | 1996-01-23 | 1996-07-24 | $7700.00 | Window Closed / Lapsed |