Abstract An electrically isulating coating glass suitable for fusing or coating an electroconductive material in multi-layer circuits which contains the following components: percent by weight SiO 2 25-48
Al 2 O 3 8-24
PbO 0.5-40
TiO 2 5-25
CaO 4-20
ZrO 2 0-5
ZrO 2 +TiO 2 5-25
ZnO 0-20
PbO+ZnO 0.5-40
Sb 2 O 3 0-3
Bi 2 O 3 0-3
CdO 0-3
SrO 0-3
MgO 0-3
PbF 2 0-3
Bi 2 O 3 +CdO+SrO+MgO+PbF 2 0-3
The electrically insulating crystallized coating glass composition of claim 1 which consists essentially of percent by weight
SiO.sub.2 30-42
Al.sub.2 O.sub.3 10-20
PbO 1-25
TiO.sub.2 8-22
CaO 6-18
ZrO.sub.2 0-5
ZrO.sub.2 +TiO.sub.2
8-22
ZnO 0.1-15
PbO+ZnO 3-25
Sb.sub.2 O.sub.3 0.1-1
Bi.sub.2 O.sub.3 0-3
CdO 0-3
SrO 0-3
MgO 0-3
PbF.sub.2 0-3
Bi.sub.2 O.sub.3 +CdO+SrO+MgO+PbF.sub.2
0-3.
Claim 4
Dependent Claim
36 words
The electrically insulating crystallized coating glass composition of claim 2, wherein PbO is present to the extent of 2-10 percent by weight and PbO + ZnO is present to the extent of 4-15 percent by weight.
Claim 5
Dependent Claim
23 words
The electrically insulating crystallized coating glass composition of claim 1, which when mixed with a suitable vehicle will form a paste for printing.
Claim 6
Dependent Claim
29 words
The electrically insulating crystallized coating glass composition of claim 1 which forms a printed insulating film upon firing a paste containing the said electrically insulating crystallized coating glass composition.
Claim 7
Dependent Claim
22 words
The electrically insulating crystallized coating glass composition of claim 1, which when coated on an electroconductive layer will form a cross-over insulation.