US4552690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive resin composition
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1984-06-20
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Granted: 1985-11-12
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Expires: 2004-06-20
Abstract
Abstract An electrically conductive resin composition comprising 15-35 parts by weight of a cyanate ester compound and 65-85 parts by weight of an electrically conductive powder selected from the group consisting of a copper powder, a copper alloy powder and a silver powder and mixtures thereof, the cyanate ester component content in the cyanate ester compound being more than 50% by weight in terms of monomer, characterized in that the composition contains 0.5-15 parts by weight of acetylacetone or its derivatives is disclosed. The electrically conductive resin composition is useful as a conductive ink.
Inventors
- 👤 Nobuyuki Ikeguchi
- 👤 Yasunari Osaki
- 👤 Yoshiyuki Furuya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:23
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/22; C; C08; C08K; C08K3/00; C08K3/02; C08K3/08; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/095
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
134 words
An electrically conductive resin composition comprising 15-35 parts by weight of a cyanate ester compound which is a monomer, polymer thereof or mixture of monomer and polymer, wherein said monomer has the formula R--O--C.tbd.N).sub.m wherein m is an integer of 2-10 and R is an aromatic organic group, the cyanate groups being bonded to said aromatic organic group, and 65-85 parts by weight of an electrically conductive powder selected from the group consisting of a copper powder, a copper alloy powder, and a silver powder and mixtures thereof, the cyanate ester component content in the cyanate ester compound being more than 50% by weight in terms of monomer, and said composition further containing 0.5-15 parts by weight of at least one acetylacetone compound selected from the group consisting of acetylacetone, acetylacetone-ethylene diamine and acetylacetoneamine.
Claim 2
Dependent Claim
134 words
An electrically conductive resin composition comprising 15-35 parts by weight of a cyanate ester compound which is a monomer, polymer thereof or mixture of monomer and polymer, wherein said monomer has the formula R--O--C.tbd.N).sub.m wherein m is an integer of 2-10 and R is an aromatic organic group, the cyanate groups being bonded to said aromatic organic group, and 65-85 parts by weight of an electrically conductive powder selected from the group consisting of a copper powder, a copper alloy powder, and a silver powder and mixtures thereof, the cyanate ester component content in the cyanate ester compound being more than 50% by weight in terms of monomer, and said composition further containing 0.5-15 parts by weight of at least one acetylacetone compound selected from the group consisting of acetylacetone, acetylacetone-ethylene diamine and acetylacetoneamine.
Claim 3
Dependent Claim
21 words
The composition of claim 1 wherein it further contains a metal chelate compound of the acetylacetone compound and a metal ion.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein the cyanate ester compound is 2,2-bis(4-cyanatophenyl)propane.
Claim 5
Dependent Claim
9 words
The process of claim 1 wherein acetylacetone is used.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein the conductive powder is copper powder.
Claim 7
Dependent Claim
15 words
The process of claim 1 wherein the cyanate ester compound is cyanate ester-maleimide resin composition.
Claim 8
Dependent Claim
15 words
The process of claim 1 wherein the cyanate ester compound is cyanate ester-maleimide-epoxy resin composition.
Claim 9
Dependent Claim
15 words
The process of claim 1 wherein the cyanate ester compound is cyanate ester-epoxy resin composition.
References Cited (Backward Citations)
US4323483A
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JPS56103260A
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JPS56128504A
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US4356366A
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JPS56163166A
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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) | 1988-11-11 | 1989-05-13 | 1989-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-11 | 1993-05-13 | 1993-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-11 | 1997-05-13 | 1997-11-12 | $7700.00 | Window Closed / Lapsed |