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Copper conductor compositions containing copper oxide and Bi.sub.2 O.sub.3

  • US 4,172,919 A
  • Filed: 06/16/1978
  • Issued: 10/30/1979
  • Est. Priority Date: 04/22/1977
  • Status: Expired due to Term
First Claim
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1. A copper conductor composition fireable in a neutral atmosphere to produce a solderable, adherent conductor pattern on a dielectric substrate, said composition comprising finely divided inorganic particles dispersed in an inert liquid vehicle, said inorganic particles consisting essentially of, by weight,(a) 86-97% copper,(b) 1-7% copper oxide,(c) 1-7% glass comprising 75% or more of Bi2 O3,the total weight of (b) and (c) being in the range 3-14%, provided that where the total weight of (b) and (c) is 3%, it is of 2% (b) and 1% (c).

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