Patents Assigned to Heraeus, Inc. Cermalloy Division
  • Patent number: 4717690
    Abstract: An overglaze ink comprising(a) 55 to 70 weight % of a glass composition, the glass composition comprising(1) 15 to 43 weight % of a main glass component selected from the group consisting of BaO, SrO and SrO+BaO,(2) a glass forming component comprising34 to 45 weight % B.sub.2 O.sub.3 and0 to 6 weight % SiO.sub.2(3) 0 to 2 weight % of a colorant selected from the group consisting of Cr.sub.2 O.sub.3, CoO and NiO,(4) 7 to 20 weight % of a thermal expansion modifier selected from the group consisting of ZnO, Al.sub.2 O.sub.3, TiO.sub.2 and mixtures thereof, and(5) 1 to 7 weight % of a dopant comprising one or more of the following:ZnF.sub.2 having a weight % of 0 to 5,Li.sub.2 O having a weight % of 0 to 2,Na.sub.2 O having a weight % of 0 to 2,K.sub.2 O having a weight % of 0 to 2,LiF having a weight % of 0 to 2,NaF having a weight % of 0 to 2,KF having a weight % of 0 to 2,BaF.sub.2 having a weight % of 0 to 2,Na.sub.2 SiF.sub.6 having a weight % of 0 to 2,PbO having a weight % of 0 to 3,V.sub.2 O.sub.
    Type: Grant
    Filed: February 12, 1986
    Date of Patent: January 5, 1988
    Assignee: Heraeus, Inc. Cermalloy Division
    Inventors: Dana L. Hankey, Robert C. Sutterlin