US4254007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical insulating composition
Assignee: General Electric Co
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Filing: 1979-09-13
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Granted: 1981-03-03
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Expires: 1999-09-13
Abstract
Abstract An electrically insulating wire coating material comprised of the heat cured product of a mixture of polyvinylacetal and phenol-aldehyde resins, or a mixture of these resins with epoxy resins, and a catalyst from the special metal containing group of cyclic organic compounds known as chelates and which can be further defined as being a non-ionic inner complex salt. These materials give insulating coatings with improved flexibility and thermal aging properties.
Inventors
- 👤 Ralph G. Flowers
- 👤 William A. Fessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:41
CPC Classifications
C; C09; C09D; C09D129/00; C09D129/14
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
64 words
An electrically insulating wire coating enamel consisting essentially of a mixture of polyvinylacetal resin and phenolic resin and including from 0.15 to 1.9 percent by weight of an inner complex salt which comprises a bidentate chelating agent having one acid and one coordinating group wherein the chelating agent includes a metal having a coordination number equal to twice the principle valence of the metal.
Claim 2
Dependent Claim
64 words
An electrically insulating wire coating enamel consisting essentially of a mixture of polyvinylacetal resin and phenolic resin and including from 0.15 to 1.9 percent by weight of an inner complex salt which comprises a bidentate chelating agent having one acid and one coordinating group wherein the chelating agent includes a metal having a coordination number equal to twice the principle valence of the metal.
Claim 3
Dependent Claim
23 words
The wire coating enamel of claim 1 wherein the inner complex of salt is selected from the group consisting of acetylacetonates and glycinates.
Claim 4
Dependent Claim
21 words
The wire coating enamel of claim 2 wherein the metal is selected from the group consisting of nickel, aluminum and zinc.
Claim 5
Dependent Claim
23 words
The wire coating enamel of claim 1 wherein the catalyst is selected from the group consisting of aluminum, nickel, titanium and zinc acetylacetonates.
Claim 6
Dependent Claim
13 words
The wire coating enamel of claim 1 wherein the catalyst comprises cooper glycinate.
Claim 7
Dependent Claim
13 words
The wire coating enamel of claim 1 wherein the catalyst comprises nickel dimethylglyoxime.
Claim 8
Dependent Claim
13 words
The wire coating enamel composition of claim 1 further including an epoxy resin.
Claim 9
Independent Claim
70 words
A method of preparing wire coating enamels comprising the steps of: dissolving a mixture of polyvinylacetal resin, phenolic resin in a solvent, with from 0.l5 percent to 1.9 percent of said resins of an inner complex salt which comprises a bidentate chelating agent having one acid and one coordinating group wherein the chelating agent includes a metal having a coordination number equal to twice the principle valence of the metal.
Claim 10
Independent Claim
70 words
A method of preparing wire coating enamels comprising the steps of: dissolving a mixture of polyvinylacetal resin, phenolic resin in a solvent, with from 0.l5 percent to 1.9 percent of said resins of an inner complex salt which comprises a bidentate chelating agent having one acid and one coordinating group wherein the chelating agent includes a metal having a coordination number equal to twice the principle valence of the metal.
Claim 11
Independent Claim
39 words
A method of preparing a wire coating enamel comprising the steps of: dissolving 452 parts polyvinylacetal resin 226 parts of phenolic resin, 18.9 parts hexamethoxymethylmelamine and 19.8 parts zinc acetylacetonate in a solvent mixture consisting of xylene and cresol.
Claim 12
Independent Claim
39 words
A method of preparing a wire coating enamel comprising the steps of: dissolving 452 parts polyvinylacetal resin 226 parts of phenolic resin, 18.9 parts hexamethoxymethylmelamine and 19.8 parts zinc acetylacetonate in a solvent mixture consisting of xylene and cresol.
Claim 13
Independent Claim
37 words
A method of preparing insulating wire coating enamels comprising the steps of dissolving 452 parts polyvinylacetal resin, 226 parts phenolic resin, 18.9 parts hexamethoxymethylmelamine and 19.3 parts nickel acetylacetonate in a solvent mixture of xylene and cresol.
Claim 14
Independent Claim
37 words
A method of preparing insulating wire coating enamels comprising the steps of dissolving 452 parts polyvinylacetal resin, 226 parts phenolic resin, 18.9 parts hexamethoxymethylmelamine and 19.3 parts nickel acetylacetonate in a solvent mixture of xylene and cresol.
Claim 15
Independent Claim
42 words
A method of preparing insulating wire coating enamels comprising the steps of: dissolving 4.7 parts polyvinylacetal resin, 3.1 parts phenolic resin, 2.0 parts epoxy resin and from 0.0l to 0.18 parts of metal acetylacetonate in a solvent mixture of xylene and cresol.
Claim 16
Independent Claim
42 words
A method of preparing insulating wire coating enamels comprising the steps of: dissolving 4.7 parts polyvinylacetal resin, 3.1 parts phenolic resin, 2.0 parts epoxy resin and from 0.0l to 0.18 parts of metal acetylacetonate in a solvent mixture of xylene and cresol.
Claim 17
Independent Claim
38 words
A method of preparing insulating wire coating enamels comprising the steps of: dissolving 4.7 parts polyvinylacetal resin, 3.1 parts phenolic resin, 2.0 parts epoxy resin and 0.08 parts titanium acetylacetonate in a solvent mixture of xylene and cresol.
Claim 18
Independent Claim
38 words
A method of preparing insulating wire coating enamels comprising the steps of: dissolving 4.7 parts polyvinylacetal resin, 3.1 parts phenolic resin, 2.0 parts epoxy resin and 0.08 parts titanium acetylacetonate in a solvent mixture of xylene and cresol.
Claim 19
Dependent Claim
17 words
The method of claim 11 wherein the xylene comprises 10 parts and the cresol comprises 30 parts.
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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) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |