Back to results
US 12,448,318 B2Granted
Composition, paste and methods
AssigneeFenzi AGT Netherlands B.V.
InventorsEdwin Peter Kennedy Currie, Svetlana N. Emelianova, Hong Ren, Maxence Valla
Life of this patent
Estimating the term…
Abstract
A composition for sealing inorganic substrates, the composition comprising a glass frit and a filler material, wherein said glass frit comprises: 60 to 85 wt % Bi2O3; 3 to 15 wt % ZnO; 2 to 10 wt % B2O3; 0.6 to 5 wt % SiO2; 0.6 to 5 wt % Al2O3; and 0.1 to 0.5 wt % of a compound selected from NaF and BaF2.
Claims14
A composition for sealing inorganic substrates, the composition comprising a glass frit and a filler material, wherein said glass frit comprises:
- 60 to 85 wt % Bi2O3;
- 3 to 15 wt % ZnO;
- 2 to 10 wt % B2O3;
- 0.5 to 5 wt % SiO2;
- 0.5 to 5 wt % Al2O3;
- and
- 0.1 to 0.5 wt % of a compound selected from NaF and BaF2, and
- wherein said filler material (i) is cordierite or an aluminosilicate glass frit or (ii) is a sintered material comprising an aluminosilicate glass frit and a laser absorber which is a coloured pigment.
5 more elements
A method of forming a bond or seal between inorganic substrates, the method comprising:
- (i) providing a first inorganic substrate;
- (ii) providing a second inorganic substrate;
- (iii) depositing a paste onto at least a portion of at least one of the inorganic substrates,
- the paste comprising (i) 60 to 85 wt % Bi2O3, 3 to 15 wt % ZnO, 2 to 10 wt % B2O3, 0.5 to 5 wt % SiO2, 0.5 to 5 wt % Al2O3, and 0.1 to 0.5 wt % of a compound selected from NaF and BaF, and (ii) an organic medium;
- (iv) drying said paste to form a dried paste;
- (v) optionally pre-firing the dried paste to remove organic medium;
- (vi) assembling the first and second substrates such that the dried paste lies therebetween and in contact with both substrates;
- and
- (vii) firing said dried paste.
6 more elements
Dependencies are inferred from the claim text.