US3759914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved curing compositions for epoxy resins comprising latent amine curing agent and accelerator
Assignee: EIDP Inc
•
Filing: 1971-08-10
•
Granted: 1973-09-18
•
Expires: 1991-08-10
Abstract
Abstract Composition, useful for curing polyepoxide having a plurality of 1,2-epoxy groups comprising an admixture of: A. a latent amine curing agent for a polyepoxide having a plurality of 1,2-epoxy groups, and B. an accelerator for (A), the accelerator having the formula WHEREIN WHEREIN X Cl, Br, CH3, NO2, H, or OCH3 Y Cl, Br, CH3, NO2, H, or OCH3 X and Y can be the same as each other or different from each other, Z a monovalent radical derived from a secondary amine having at least three carbon atoms, PROVIDED THAT WHEN X and Y are selected from the group consisting of Cl, Br, CH3, NO2, or -OCH3 or when X Br and Y H, then Z can be a monovalent radical derived from a secondary amine having at least two carbon atoms, THE ACCELERATOR BEING PRESENT IN AN AMOUNT OF ABOUT 0.1-300 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE LATENT AMINE CURING AGENT.
Inventors
- 👤 J Simms
- 👤 H Tremper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:19
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/44; C08G59/4007; C08G59/4014; C08G59/50; C08G59/5046; C08G59/5053; C08G59/508; C08G59/5086
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
29 words
The composition of claim 1 wherein the latent amine curing agent is present in an amount of about 0.5-20 parts per weight per 100 parts per weight of polyepoxide.
Claim 2
Dependent Claim
79 words
The composition of claim 1 wherein the polyepoxide is the reaction product of or an epihalohydrin and a polyhydric phenol, a polyhydric alcohol and the latent amine curing agent is selected from the group consisting of the following: Dicyandiamide Thioameline Sodium Phenylcyanamide Dithiobiuret Ethylenethiourea Diallylmelamine Acetoguanamine Melamine Guanylurea Benzoguanamine Benzoyldicyandiamide Guanazole 3-Amino-1,2,4-triazole Monomethyloldicyandiamide Thiosemicarbazide Adipamide Adipyl dihydrazide Isophthalyl diamide Isophthalyl dihydrazide Triaminomelamine Tetraminoditolymethane Diaminoacridine N-Methylglucamine Phenylbiguanide Semicarbazide 2-Oxoimidazoline-4,5-dicarboxamide Oxaldiimidic acid dihydrazid Oxamidedioxime Diaminomaleonitrile 2,3-Diamino-5,6-dicyanopyrazine Stearic hydrazide Succinimide Cyanoacetamide .
Claim 3
Dependent Claim
79 words
The composition of claim 2 wherein the polyepoxide is the reaction product of an epihalohydrin and a polyhydric phenol, or a polyhydric alcohol and the latent amine curing agent is selected from the group consisting of the following: Dicyandiamide Thioameline Sodium Phenylcyanamide Dithiobiuret Ethylenethiourea Diallylmelamine Acetoguanamine Melamine Guanylurea Benzoguanamine Benzoyldicyandiamide Guanazole 3-Amino-1,2,4-triazole Monomethyloldicyandiamide Thiosemicarbazide Adipamide Adipyl dihydrazide Isophthalyl diamide Isophthalyl dihydrazide Triaminomelamine Tetraminoditolymethane Diaminoacridine N-Methylglucamine Phenylbiguanide Semicarbazide 2-Oxoimidazoline-4,5-dicarboxamide Oxaldiimidic acid dihydrazid Oxamidedioxime Diaminomaleonitrile 2,3-diamino-5,6-dicyanopyrazine Stearic hydrazide Succinimide Cyanoacetamide .
Claim 4
Dependent Claim
15 words
The composition of claim 1 wherein the accelerator is selected from the group consisting of
Claim 5
Dependent Claim
15 words
The composition of claim 2 wherein the accelerator is selected from the group consisting of
Claim 6
Dependent Claim
15 words
The composition of claim 4 wherein the accelerator is selected from the group consisting of
Claim 7
Dependent Claim
21 words
The composition of claim 1 wherein the accelerators have the formula set forth in (B) of claim 1 wherein Z is
Claim 8
Dependent Claim
19 words
The composition of claim 1 containing about 0.5-60% by weight of filler based on the weight of the polepoxide.
Claim 9
Dependent Claim
19 words
The composition of claim 4 containing about 0.5-60% by weight of filler based on the weight of the polyepoxide.
Claim 10
Dependent Claim
27 words
The cured composition of claim 1 formed by heating the composition of claim 1 at a temperature and for a time sufficient to form a hard mass.
References Cited (Backward Citations)
US3386956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |