EP0068167A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Conductive composition comprising copper, and flash bar produced therewith
Assignee: EIDP Inc
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Filing: 1982-06-03
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Granted: —
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Expires: 2002-06-03
Abstract
Abstract A thick film copper conductor composition which sinters in the temperature range of 550-700°C consisting essentially of an admixture of 73 to 78 parts copper powder, 4 to 5 parts cupric oxide, 4 to 7 parts low melting temperature cadmium oxide glass dispersed in an organic vehicle.
Inventors
- 👤 Cornelius Joseph Mc Cormick
- 👤 Robert John Moneta
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 16:56
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H01; H01B; H01B1/00; H01B1/14; H01B1/16; H01B1/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
57 words
A thick film conductor composition consisting essentially of an admixture of finely divided particles of (A) 65 to 80 parts by weight copper powder, (B) 0 to 6 parts by weight copper oxide, and (C) 3 to 8 parts by weight low melting temperature glass frit which sinters at 550° to 700°C dispersed in an organic vehicle.
Claim 2
Dependent Claim
57 words
A thick film conductor composition consisting essentially of an admixture of finely divided particles of (A) 65 to 80 parts by weight copper powder, (B) 0 to 6 parts by weight copper oxide, and (C) 3 to 8 parts by weight low melting temperature glass frit which sinters at 550° to 700°C dispersed in an organic vehicle.
Claim 3
Dependent Claim
28 words
The'composition of claim 1 wherein the vehicle is a methacrylate vehicle consisting essentially of 20% to 40% by weight of vehicle methacrylate resin dissolved in a volatile solvent.
Claim 4
Dependent Claim
54 words
The composition of claim 2 wherein the copper powder lies in the range from 73 to 78 parts by total weight of the solids in the composition, and wherein the copper oxide is cupric oxide and lies in the range from 1.5 to 6 parts by total weight of the solids in the composition.
Claim 5
Dependent Claim
27 words
The composition of claim 3 wherein the copper oxide lies in the range from 4 to 5 parts by total weight of the solids in the composition.
Claim 6
Dependent Claim
18 words
The composition of claims 2, 3 or 4 wherein the resin is selected from poly(ethylmethacrylate), poly(methylmethacrylate), and poly(isobutylmethacrylate).
Claim 7
Dependent Claim
14 words
The composition of claims 2 to 5, wherein the solvent is butyl carbitol acetate.
Claim 8
Dependent Claim
28 words
The compositions of claims 1 to 6 wherein the glass contains 68.4 % PbO, 13% B203, 9.3 % SiO 2 and 9.3% Cd=, by weight of the glass.
Claim 9
Independent Claim
49 words
A method of making a flash bar comprising the steps of: (A) applying the compositions of claims 1 to 7 to a porcelain enamel steel substrate; and (b) firing the composition at a temperature in the range of 550-700°C in a nitrogen atmosphere to sinter the glass and metal.
Claim 10
Dependent Claim
10 words
The flash bar produced as the product of claim 7.
References Cited (Backward Citations)
No citation records indexed.
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