Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
A glass frit having a firing temperature of less than about 1100° F. and a coefficient of thermal expansion approximating that of stainless steel and many nickel-base alloys comprising about 60% by weight of glass formers, 30% by weight of monovalent fluxes and 10% by weight of divalent fluxes; the glass formers consisting essentially of SiO 2 and B 2 O 3 ; the monovalent fluxes consisting essentially of Li 2 O, Na 2 O and K 2 O; the divalent fluxes being selected from the group consisting of CaO, SrO, and BaO; and additional trace elements not exceeding 10% by weight.
Claim 2
Dependent Claim
102 words
A glass frit having a firing temperature of less than about 1100° F. and a coefficient of thermal expansion approximating that of stainless steel and many nickel-base alloys comprising about 60% by weight of glass formers, 30% by weight of monovalent fluxes and 10% by weight of divalent fluxes; the glass formers consisting essentially of SiO 2 and B 2 O 3 ; the monovalent fluxes consisting essentially of Li 2 O, Na 2 O and K 2 O; the divalent fluxes being selected from the group consisting of CaO, SrO, and BaO; and additional trace elements not exceeding 10% by weight.
Claim 3
Dependent Claim
27 words
A glass frit as set forth in claim 1, wherein the amount of SiO 2 is about four times the amount of B 2 O 3 .
Claim 4
Dependent Claim
28 words
A glass frit as set forth in claim 1, wherein the ratio of the weights of the various monovalent fluxes to each other is not greater than 4:1.
Claim 5
Dependent Claim
42 words
A glass frit as set forth in claim 3, wherein on a molecular equivalent basis, the amount of Na 2 O is present in an amount about equal to the sum of the amounts of Li 2 O and K 2 O.
Claim 6
Dependent Claim
28 words
A glass frit as set forth in claim 3, wherein on a molecular equivalent basis, Li 2 O and K 2 O are present in approximately like amounts.
Claim 7
Dependent Claim
20 words
A glass frit as set forth in claim 1, wherein the divalent fluxes consist essentially of CaO, SrO and BaO.
Claim 8
Dependent Claim
72 words
A glass frit capable of being fired at less than 1100° F. and having the following composition, in terms of oxides: ______________________________________
Oxide Percent by weight
______________________________________
SiO.sub.2 44 to 54
B.sub.2 O.sub.3
10 to 14
Li.sub.2 O 3 to 4
Na.sub.2 O 13 to 16
K.sub.2 O 10 to 13
CaO 4 to 6
SrO 1 to 2
BaO 2 to 3
______________________________________ and other elements not exceeding 10% by weight.
Claim 9
Dependent Claim
72 words
A glass frit capable of being fired at less than 1100° F. and having the following composition, in terms of oxides: ______________________________________
Oxide Percent by weight
______________________________________
SiO.sub.2 44 to 54
B.sub.2 O.sub.3
10 to 14
Li.sub.2 O 3 to 4
Na.sub.2 O 13 to 16
K.sub.2 O 10 to 13
CaO 4 to 6
SrO 1 to 2
BaO 2 to 3
______________________________________ and other elements not exceeding 10% by weight.
Claim 10
Dependent Claim
39 words
A glass frit as set forth in claim 7, wherein the percent by weight is as follows: ______________________________________
SiO.sub.2 49%
B.sub.2 O.sub.3
12%
Li.sub.2 O 3.6%
Na.sub.2 O 14.4%
K.sub.2 O 11.4%
CaO 5%
SrO 1.85%
BaO 2.75%
______________________________________