US4192786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy Resin composition containing glycidyl ether-metal carboxylatecatalyst
Assignee: Mitsubishi Electric Corp
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Filing: 1978-04-19
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Granted: 1980-03-11
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Expires: 1998-04-19
Abstract
Abstract This invention relates to an epoxy resin composition suitable for impregnating coils of electrical apparatus such as motors, generators and the like. More particularly, this invention relates to an epoxy resin composition having excellent workability and a long pot life, which composition is prepared by adding the reaction product of the glycidyl ether of a monoalcohol and a metal carboxylate, which works as a reactive diluent and accelerator, to an epoxy resin having at least two epoxy groups per molecule and containing a curing agent.
Inventors
- 👤 Kyoichi Shibayama
- 👤 Kazuo Okahashi
- 👤 Osamu Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:41
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40; C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/68; C08G59/681; C08G59/685
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
An epoxy resin composition which comprises a mixture of 40-90 parts by weight of an epoxy resin having at least two epoxy groups per molecule; 70-100 parts by weight of an acid anhydride curing agent; and 60-10 parts by weight of the reaction product of the glycidyl ether of a monoalcohol and a metal carboxylate selected from the group consisting of the zinc, manganese, cobalt and nickel salts of octanoic acid, stearic acid, palmitic acid, naphthenic acid, caproic acid, enanthic acid, capric acid, myristic acid and lauric acid.
Claim 2
Dependent Claim
88 words
An epoxy resin composition which comprises a mixture of 40-90 parts by weight of an epoxy resin having at least two epoxy groups per molecule; 70-100 parts by weight of an acid anhydride curing agent; and 60-10 parts by weight of the reaction product of the glycidyl ether of a monoalcohol and a metal carboxylate selected from the group consisting of the zinc, manganese, cobalt and nickel salts of octanoic acid, stearic acid, palmitic acid, naphthenic acid, caproic acid, enanthic acid, capric acid, myristic acid and lauric acid.
Claim 3
Dependent Claim
30 words
The epoxy resin composition according to claim 1, wherein said epoxy resin is an epoxy resin of the formula ##STR3## where n represents an integer of up to about 15.
Claim 4
Dependent Claim
43 words
The epoxy resin composition according to claim 1, wherein said epoxy resin is a mixture of the epoxy resin of the formula (I) ##STR4## wherein n represents an integer of up to about 15, with an epoxy resin of the formula (II) ##STR5##
Claim 5
Dependent Claim
33 words
The epoxy resin composition according to claim 3, wherein the epoxy resin of the formula (II) is used in an amount of 20-60% by weight of the epoxy resin of the formula (I).
Claim 6
Dependent Claim
23 words
The epoxy resin composition according to claim 1, 2, 3 or 4, wherein said acid anhydride curing agent is liquid at room temperature.
Claim 7
Dependent Claim
37 words
The epoxy resin composition according to claim 1, 2, 3 or 4, wherein, in preparing said reaction product, said metal carboxylate is used in an amount of 0.2-1.0% by weight of said glycidyl ether of a monoalcohol.
Claim 8
Dependent Claim
33 words
The epoxy resin composition according to claim 5, wherein, in preparing said reaction product, said metal carboxylate is used in an amount of 0.2-1.0% by weight of said glycidyl ether of a monoalcohol.
Claim 9
Dependent Claim
34 words
The epoxy resin composition according to claim 1, 2, 3 or 4, wherein said metal carboxylate is selected from the group consisting of zinc octanoate, manganese octanoate, manganese stearate, cobalt octanoate and nickel stearate.
Claim 10
Dependent Claim
30 words
The epoxy resin composition according to claim 5, wherein said metal carboxylate is selected from the group consisting of zinc octanoate, manganese octanoate, manganese stearate, cobalt octanoate and nickel stearate.
Claim 11
Dependent Claim
30 words
The epoxy resin composition according to claim 6, wherein said metal carboxylate is selected from the group consisting of zinc octanoate, manganese octanoate, manganese stearate, cobalt octanoate and nickel stearate.
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) | 1983-03-11 | 1983-09-10 | 1984-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-11 | 1987-09-10 | 1988-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-11 | 1991-09-10 | 1992-03-11 | $7700.00 | Window Closed / Lapsed |