EP0183399A2
Expired / Lapsed
EP
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Method and composition for producing terminations in multilayer ceramic capacitors
Assignee: BASF Catalysts LLC
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Filing: 1985-11-01
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Granted: —
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Expires: 2005-11-01
Abstract
Abstract A method and composition for forming electrically conductive termination films on ceramic capacitor bodies having improved adhesion and solder leach resistance wherein a mixture of a palladium resinate and a base metal resinate or oxide is deposited on the opposite end faces of the capacitor body. The deposit is fired at 700° - 1100°C to pyrolyze the resinate moiety of the metal resinates, whereby palladium and base metal oxide residues are formed on the end faces of the capacitor. The residues catalyze the depositon of nickel from nickel plating baths to prepare solder leach resistant end faces.
Inventors
- 👤 John C. Constantine
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 16:40
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/228; H01G4/232; H01G4/2325
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
72 words
A method of providing a conductive termination film on a ceramic capacitor substrate comprising the steps of: (a) applying to the surface of the ceramic substrate a composition comprised of a metal resinate mixture of a palladium resinate and a base metal resinate, or oxide and then (b) firing the mixture in an oxidizing atmosphere at a temperature sufficient to pyrolyze the organic moiety of the resinates and form on the substrate.
Claim 2
Independent Claim
72 words
A method of providing a conductive termination film on a ceramic capacitor substrate comprising the steps of: (a) applying to the surface of the ceramic substrate a composition comprised of a metal resinate mixture of a palladium resinate and a base metal resinate, or oxide and then (b) firing the mixture in an oxidizing atmosphere at a temperature sufficient to pyrolyze the organic moiety of the resinates and form on the substrate.
Claim 3
Dependent Claim
44 words
The method of Claim 1, wherein the composition as applied to the ceramic capacitor substrate contains about 70 to about 85 percent by weight of the palladium resinate and about 15 to about 30 percent by weight of the base metal resinate or oxide.
Claim 4
Dependent Claim
21 words
The method of Claim 1 or Claim 2 wherein the mixture is fired at about 700 to about 1100°C. any preceding
Claim 5
Independent Claim
20 words
The method of any preceding Claim wherein the composition contains at least two base metal resinates containing different metal components.
Claim 6
Independent Claim
32 words
The method of any preceding Claim wherein the base metal resinate is selected from the group of resinates consisting of lead, tin, titanium, boron, zinc, manganese and silicon resinates and mixtures thereof.
Claim 7
Independent Claim
55 words
The method of any preceding Claim wherein the metal resinates have the general formula Me-X-R wherein Me is a metal selected from the group consisting of palladium and base metals, X is an atom selected from the group consisting of oxygen and nitrogen and R is an alkyl group containing 6 to 20 carbon atoms.
Claim 8
Dependent Claim
49 words
An electrically conductive composition adapted to be applied to and fired on a ceramic body comprising a mixture of a palladium resinate and one or more base metal resinates or oxides, the fired composition exhibiting improved adhesion to the ceramic body and after nickel plating, improved solder leach resistance.
Claim 9
Dependent Claim
49 words
An electrically conductive composition adapted to be applied to and fired on a ceramic body comprising a mixture of a palladium resinate and one or more base metal resinates or oxides, the fired composition exhibiting improved adhesion to the ceramic body and after nickel plating, improved solder leach resistance.
Claim 10
Dependent Claim
37 words
The composition of Claim 7 wherein the composition contains about 70 to about 85 percent by weight of the palladium resinate and about 30 to about 15 percent by weight of the base metal resinate or oxide.
Claim 11
Dependent Claim
22 words
The composition of Claim 7 or Claim 8 wherein the composition contains at least two base metal resinates containing different metal components.
Claim 12
Dependent Claim
33 words
The composition any of of Claims 7 to 9 wherein the base metal resinate is selected from the group consisting of lead, tin, titanium, boron, zinc, manganese and silicon resinates and mixtures thereof.
Claim 13
Dependent Claim
58 words
The composition of any of Claims 7 to 10 wherein the metal- resinates have the general formula Me-X-R wherein Me is a metal selected from the group consisting of palladium and base metals, X is an atom selected from the group consisting of oxygen and nitrogen and R is an alkyl group containing 6 to 20 carbon atoms.
References Cited (Backward Citations)
No citation records indexed.
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