US4111909A
Expired / Lapsed
US
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Controlled reactivity epoxy resin compositions
Assignee: Shell USA Inc
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Filing: 1977-04-11
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Granted: 1978-09-05
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Expires: 1997-04-11
Abstract
Abstract Epoxy resin compositions having extended reactivity (gel time) are prepared by adding phosphate or phosphite compounds to epoxy resin-dicyandiamide-tertiary amine curing systems. Such compositions are useful in preparing glass fiber laminates and powder coatings.
Inventors
- 👤 James Brandon Simons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4021; C08K5/524; C08K5/53
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
100 words
In a heat curable composition comprising a glycidyl polyether of a polyhydric phenol or polyhydric alcohol, dicyandiamide and a tertiary amine, the improvement which comprises the addition of a phosphorus compound in the amount of about 0.1 to about 2 weight percent based on the weight of the glycidyl polyether, wherein the phosphorus compound is represented by the formulas R.sub.3 PO.sub.4 and R.sub.3 PO.sub.3 wherein each R, separately or combined, is hydrogen, or an alkyl, aryl, or haloalkyl radical, and wherein the alkyl group contains 1 to 20 carbon atoms, and the aryl group contains 6 to 18 carbon atoms.
Claim 2
Dependent Claim
100 words
In a heat curable composition comprising a glycidyl polyether of a polyhydric phenol or polyhydric alcohol, dicyandiamide and a tertiary amine, the improvement which comprises the addition of a phosphorus compound in the amount of about 0.1 to about 2 weight percent based on the weight of the glycidyl polyether, wherein the phosphorus compound is represented by the formulas R.sub.3 PO.sub.4 and R.sub.3 PO.sub.3 wherein each R, separately or combined, is hydrogen, or an alkyl, aryl, or haloalkyl radical, and wherein the alkyl group contains 1 to 20 carbon atoms, and the aryl group contains 6 to 18 carbon atoms.
Claim 3
Dependent Claim
29 words
The composition of claim 1 wherein the phosphorus compound is present in the amount of 0.1 to about 1.0 weight percent based on the weight of the glycidyl polyether.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein the phosphorus compound is a trialkyl phosphate.
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein the phosphorus compound is a trialkyl phosphite.
Claim 6
Dependent Claim
11 words
The composition of claim 1 wherein the phosphorus compound is tris(2,3-dibromopropyl)phosphate.
Claim 7
Dependent Claim
136 words
A heat curable composition comprising a glycidyl polyether of a polyhydric phenol or polyhydric alcohol in admixture with dicyandiamide, a tertiary amine and a phosphorus compound wherein the phosphorus compound is represented by the formulas R.sub.3 PO.sub.4 and R.sub.3 PO.sub.3 wherein each R, separately or combined, is hydrogen, or an alkyl, aryl or haloalkyl radical, wherein the alkyl group contains 1 to 20 carbon atoms and the aryl group contains 6 to 18 carbon atoms, wherein the phosphorus compound is present in the amount of about 0.1 to about 2 weight percent, the dicyandiamide is present in the amount of about 1 to about 10 weight percent and the tertiary amine is present in the amount of about 0.1 to about 1 weight percent, said weight percents being based on the weight of the glycidyl polyether.
Claim 8
Dependent Claim
136 words
A heat curable composition comprising a glycidyl polyether of a polyhydric phenol or polyhydric alcohol in admixture with dicyandiamide, a tertiary amine and a phosphorus compound wherein the phosphorus compound is represented by the formulas R.sub.3 PO.sub.4 and R.sub.3 PO.sub.3 wherein each R, separately or combined, is hydrogen, or an alkyl, aryl or haloalkyl radical, wherein the alkyl group contains 1 to 20 carbon atoms and the aryl group contains 6 to 18 carbon atoms, wherein the phosphorus compound is present in the amount of about 0.1 to about 2 weight percent, the dicyandiamide is present in the amount of about 1 to about 10 weight percent and the tertiary amine is present in the amount of about 0.1 to about 1 weight percent, said weight percents being based on the weight of the glycidyl polyether.
Claim 9
Dependent Claim
54 words
The composition of claim 6 wherein the dicyandiamide is present in the amount of about 3 to about 5 weight percent, the tertiary amine is present in the amount of about 0.2 to about 0.3 weight percent, and the phosphorus compound is present in the amount of about 0.1 to about 1 weight percent.
Claim 10
Dependent Claim
26 words
The composition of claim 6 wherein the glycidyl polyether is a glycidyl polyether of a polyhydric phenol having an epoxide equivalent weight of 100 to 6000.
Claim 11
Dependent Claim
12 words
The composition of claim 8 wherein the epoxide equivalent weight is 170-2000.
Claim 12
Dependent Claim
13 words
The composition of claim 6 wherein the phosphorus compound is a trialkyl phosphate.
Claim 13
Dependent Claim
13 words
The composition of claim 6 wherein the phosphorus compound is a trialkyl phosphite.
References Cited (Backward Citations)
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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) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |