US4663079A
Expired / Lapsed
US
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Copper-type conductive coating composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1985-06-27
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Granted: 1987-05-05
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Expires: 2005-06-27
Abstract
Abstract A copper-type conductive coating composition which comprises: (A) a copper powder with hydrogen loss of at most 0.2% by weight or a copper powder with its oxidized surface layer removed by treatment with an organic carboxylic acid, (B) a coating binder resin, and (C) an antioxidant selected from triazoles represented by the formula: <IMAGE> (I) wherein Y is a hydroxyl group, a hydrogen atom, a C1-C18 alkyl group or a halogen atom, and a is an integer of 1 to 3, and trithiophosphites represented by the formula: <IMAGE> (II) wherein each of R1 to R3 is a C1-C30 alkyl group or an allyl group.
Inventors
- 👤 Shoji Yamaguchi
- 👤 Kimiko Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:19
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/22; C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472; C08K5/49; C08K5/5398; C09; C09D; C09D5/00; C09D5/24; H01R; H01R4/00; H01R4/04; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/095; H05K3/00; H05K3/30; H05K3/32; H05K3/321
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
83 words
A copper-type conductive coating composition which comprises: (A) a copper powder with hydrogen loss of at most 0.2% by weight or a copper powder with its oxidized surface layer removed by treatment with an organic carboxylic acid, (B) a coating binder resin, and (C) an antioxidant trithiophosphites represented by the formula: ##STR5## wherein each of R 1 to R 3 is a C 1 -C 30 alkyl group or an allyl group in an amount effective to prevent oxidation of the copper powder.
Claim 2
Dependent Claim
83 words
A copper-type conductive coating composition which comprises: (A) a copper powder with hydrogen loss of at most 0.2% by weight or a copper powder with its oxidized surface layer removed by treatment with an organic carboxylic acid, (B) a coating binder resin, and (C) an antioxidant trithiophosphites represented by the formula: ##STR5## wherein each of R 1 to R 3 is a C 1 -C 30 alkyl group or an allyl group in an amount effective to prevent oxidation of the copper powder.
Claim 3
Dependent Claim
15 words
The copper-type conductive coating composition according to claim 1, wherein component (C) is trilauryl trithiophosphite.
Claim 4
Dependent Claim
17 words
The copper-type conductive coating composition according to claim 1, wherein the organic carboxylic acid is citric acid.
Claim 5
Dependent Claim
44 words
The copper-type conductive coating composition according to claim 1, which comprises: (A) from 10 to 90% by weight of the copper powder; (B) from 10 to 90% by weight of the binder resin; and (c) from 0.01 to 5% by weight of the antioxidant.
Claim 6
Dependent Claim
18 words
The copper-type conductive coating composition according to claim 1, wherein the copper powder is an electrolytic copper powder.
Claim 7
Dependent Claim
102 words
A copper-type conductive coating composition which comprises: (A) from 40 to 60% by weight of a copper powder with hydrogen loss of at most 0.2% or a copper powder with its oxidized surface layer removed by treatment with an organic carboxylic acid, (B) from 5 to 20% by weight of a coating binder resin, (C) from 0.01 to 5% by weight of an antioxidant trithiophosphites represented by the formula: ##STR6## wherein each of R 1 to R 3 is a C 1 -C 30 alkyl group or an allyl group and (D) from 20 to 55% by weight of an organic solvent.
Claim 8
Dependent Claim
102 words
A copper-type conductive coating composition which comprises: (A) from 40 to 60% by weight of a copper powder with hydrogen loss of at most 0.2% or a copper powder with its oxidized surface layer removed by treatment with an organic carboxylic acid, (B) from 5 to 20% by weight of a coating binder resin, (C) from 0.01 to 5% by weight of an antioxidant trithiophosphites represented by the formula: ##STR6## wherein each of R 1 to R 3 is a C 1 -C 30 alkyl group or an allyl group and (D) from 20 to 55% by weight of an organic solvent.
Claim 9
Dependent Claim
15 words
The copper-type conductive coating composition according to claim 6, wherein component (C) is trilauryl trithiophosphite.
Claim 10
Dependent Claim
17 words
The copper-type conductive coating composition according to claim 6, wherein the organic carboxylic acid is citric acid.
References Cited (Backward Citations)
US3256237A
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US3708387A
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US3849370A
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US3852395A
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US3983075A
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US4122143A
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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) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |