US4696764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive adhesive composition
Assignee: Osaka Soda Co Ltd
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Filing: 1984-11-30
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Granted: 1987-09-29
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Expires: 2004-11-30
Abstract
Abstract An electrically conductive adhesive composition which provides electric conductivity between facing electrodes but maintains electric insulation in the lateral direction across the facing direction, said composition comprising (a) a nonconductive base resin and (b) electrically conductive particles incorporated and dispersed in the resin (a); wherein (I) said electrically conductive particles (b) are composed of (b-1) 10 to 75%, based on the total weight of the components (a), (b-1) and (b-2), of abrasive grain-like electrically conductive particles having an average particle diameter of at least 1 micrometer, and (b-2) 0.2 to 20% by weight, based on the total weight of the components (a), (b-1) and (b-2), of electrically conductive fine particles having an average particle diameter of not more than 0.5 micrometer, and (II) said electrically conductive adhesive composition contains a solvent for said base resin (a) in an amount required to form said composition into the state of a printing ink or a paint.
Inventors
- 👤 Taro Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:52
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C09; C09D; C09D5/00; C09D5/24; H01B1/22; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/321; H05K3/323; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0129; H05K2201/02; H05K2201/0203; H05K2201/0206; H05K2201/023; H05K2201/0263; H05K2201/0266; H05K2201/0272; H05K2201/03; H05K2201/032; H05K2201/0323; H05K2201/0326; H05K3/36; H05K3/361
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
154 words
An electrically conductive adhesive composition which provides electric conductivity between facing electrodes but maintains electric insulation in the lateral direction across the facing direction, said composition comprising (a) a nonconductive base resin and (b) electrically conductive particles incorporated and dispersed in the resin (a); wherein (I) said electrically conductive particles (b) are composed of (b-1) 10 to 75%, based on the total weight of the components (a), (b-1) and (b-2), of abrasive grain-like electrically conductive particles having an average particle diameter of at least 1 micrometer, and (b-2) 0.2 to 20% by weight, based on the total weight of the components (a), (b-1) and (b-2), of electrically conductive fine particles having an average particle diameter of not more than 0.5 micrometer, and (II) said electrically conductive adhesive composition contains a solvent for said base resin (a) in an amount required to form said composition into the state of a printing ink or a paint.
Claim 2
Dependent Claim
154 words
An electrically conductive adhesive composition which provides electric conductivity between facing electrodes but maintains electric insulation in the lateral direction across the facing direction, said composition comprising (a) a nonconductive base resin and (b) electrically conductive particles incorporated and dispersed in the resin (a); wherein (I) said electrically conductive particles (b) are composed of (b-1) 10 to 75%, based on the total weight of the components (a), (b-1) and (b-2), of abrasive grain-like electrically conductive particles having an average particle diameter of at least 1 micrometer, and (b-2) 0.2 to 20% by weight, based on the total weight of the components (a), (b-1) and (b-2), of electrically conductive fine particles having an average particle diameter of not more than 0.5 micrometer, and (II) said electrically conductive adhesive composition contains a solvent for said base resin (a) in an amount required to form said composition into the state of a printing ink or a paint.
Claim 3
Dependent Claim
71 words
The composition of claim 1 wherein the nonconductive base resin (a) is composed of 10 to 50% by weight of a hot-melt adhesive or a thermoplastic resin soluble in said solvent and 0 to 70% by weight of a hot-melt adhesive or thermoplastic resin powder insoluble in said solvent, the proportions of these components being based on the total weight of the resin (a) and the conductive particles (b-1) and (b-2).
Claim 4
Dependent Claim
83 words
The composition of claim 1 wherein the nonconductive base resin (a) is composed of 30 to 80% by weight of a thermosetting resin soluble in said solvent or a blend of said thermosetting resin with a thermoplastic resin soluble in said solvent and 0 to 70% by weight of a hot-melt adhesive or thermolplastic resin powder insoluble in said solvent, the proportions of these components being based on the total weight of the resin (a) and the electrically conductive particles (b-1) and (b-2).
Claim 5
Dependent Claim
61 words
The composition of claim 1 wherein the abrasive grain-like electrically conductive particles (b-1) are abrasive grain-like electrically conductive particles of a material selected from the group consisting of metals, metal alloys, metal carbides, metal nitrides and metal borides or particles resulting from plating of the surface of these particles or abrasive grain-like metal oxide particles with a highly conductive metal material.
Claim 6
Dependent Claim
38 words
The composition of claim 1 wherein the electrically conductive fine particles (b-2) are electrically conductive fine particles of a material selected from the group consisting of carbon black, graphite, highly conductive colloidal metals, and alloys of said metals.
Claim 7
Dependent Claim
79 words
The composition of claim 1 wherein the conductive particles (b-1) have an average particle diameter of from 1 to 100 micrometers and an inherent electric resistance at room temperature of from 10 -5 to 100 ohms-cm; and the electrically conductive fine particles (b-2) have an average particle diameter in the range of 10 -4 to 0.5 micrometer and an inherent electric resistance at room temperature of no more than 1 ohm-cm, said fine particles having a generally spherical shape.
Claim 8
Dependent Claim
24 words
The composition of claim 1 wherein the electrically conductive particles (b-1) and (b-2) are present at a weight ratio of from 100:1 to 100:70.
Claim 9
Dependent Claim
24 words
The composition of claim 1 wherein the electrically conductive particles (b-1) and (b-2) are present at a weight ratio of from 100:3 to 100:45.
Claim 10
Dependent Claim
29 words
The composition of claim 1 wherein the solvent is present in an amount of from about 5 to 70% by weight based on the weight of the resin (a).
Claim 11
Dependent Claim
30 words
The composition of claim 1 wherein the solvent is present in an amount of from about 8 to about 50% by weight based on the weight of the resin (a).
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) | 1990-09-28 | 1991-03-30 | 1991-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-28 | 1995-03-30 | 1995-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-28 | 1999-03-30 | 1999-09-29 | $7700.00 | Window Closed / Lapsed |