US4921623A
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Copper conductive coating composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1988-07-21
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Granted: 1990-05-01
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Expires: 2008-07-21
Abstract
Abstract A copper-type conductive coating composition which comprises: (A) a copper powder, (B) a coating binder resin, and (C) at least one number selected from the group consisting of salicylic acid, its specific derivatives, and benzotriazolecarboxylic acid hydrazides. The copper-type conductive coating composition provides a conductive coating layer having excellent initial conductivity and capable of maintaining the level of it stable over a long period of the time.
Inventors
- 👤 Shoji Yamaguchi
- 👤 Kimiko Yamada
- 👤 Katsuyoshi Yada
- 👤 Koichi Sakaguchi
- 👤 Hiromu Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:08
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/095; C; C09; C09D; C09D5/00; C09D5/24; H01; H01B; H01B1/00; H01B1/20; H01B1/22
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
182 words
A copper conductive coating composition which comprises: (A) from 10 to 90% by weight of a copper powder, (B) from 10 to 90% by weight of a coating binder resin, and (C) from 0.01 to 5% by weight of at least one member selected from the group consisting of salicylic acid or its derivatives represented by the formula: ##STR4## wherein each of R 1 and R 2 is a hydrogen atom or a C 1-4 alkyl group, and X is a --COOH group, a --COH=NOH group, --CONHNH 2 group, a --CONH 2 group or a --CH=NOH group, salicyclic acid dreivatives represented by the formula: ##STR5## wherein each of R 3 to R 5 is a hydrogen atom or a C 1-8 alkyl group, R 6 is a hydrogen atom or a C 1-8 hydrocarbon group having a valency of n, and n is an integer of from 1 to 4, and benzotriazolecarboxylic acid hydrazides represented by the formula: ##STR6## wherein R 7 is a carboxylic acid residue having a valency of m, and m is an integer of from 1 to 4.
Claim 2
Dependent Claim
182 words
A copper conductive coating composition which comprises: (A) from 10 to 90% by weight of a copper powder, (B) from 10 to 90% by weight of a coating binder resin, and (C) from 0.01 to 5% by weight of at least one member selected from the group consisting of salicylic acid or its derivatives represented by the formula: ##STR4## wherein each of R 1 and R 2 is a hydrogen atom or a C 1-4 alkyl group, and X is a --COOH group, a --COH=NOH group, --CONHNH 2 group, a --CONH 2 group or a --CH=NOH group, salicyclic acid dreivatives represented by the formula: ##STR5## wherein each of R 3 to R 5 is a hydrogen atom or a C 1-8 alkyl group, R 6 is a hydrogen atom or a C 1-8 hydrocarbon group having a valency of n, and n is an integer of from 1 to 4, and benzotriazolecarboxylic acid hydrazides represented by the formula: ##STR6## wherein R 7 is a carboxylic acid residue having a valency of m, and m is an integer of from 1 to 4.
Claim 3
Dependent Claim
23 words
The copper conductive coating composition according to claim 1, wherein the copper powder has a hydrogen loss of at most 0.6% by weight.
Claim 4
Dependent Claim
23 words
The copper conductive coating composition according to claim 2, wherein the copper powder has a hydrogen loss of at most 0.2% by weight.
Claim 5
Dependent Claim
19 words
The copper conductive coating composition according to claim 1, wherein the copper powder is treated with a carboxylic acid.
Claim 6
Dependent Claim
16 words
The copper conductive coating composition according to claim 4, wherein the carboxylic acid is citric acid.
Claim 7
Dependent Claim
25 words
The copper conductive coating composition according to claim 1, wherein component (C) is a salicylic acid or its derivative of the formula I or II.
Claim 8
Dependent Claim
21 words
The copper conductive coating composition according to claim 6, wherein the salicylic acid derivative is a bissalicyloylhydrazine of the formula II.
Claim 9
Dependent Claim
18 words
The copper conductive coating composition according to claim 1, wherein a 9,10-dihydro-9-oxa-10-phsophaphenanthrene-10-oxide is used in combination with component(C).
References Cited (Backward Citations)
US4705647A
Cited
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| 3.5 Years (Year 4) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |