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US 2008/0292889 A1Published application
Control of Morphology of Silica Films
AssigneesXerocat Pty Ltd, Micheal Harvey, Paul Meredith
InventorsMichael Harvey, Paul Meredith
Life of this patent
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Abstract
A method of controlling the morphology of silica or silica-like films formed by coating a precursor formulation of hydrolysable silicate oligomer onto a substrate and curing in a vapourous environment that comprises a base, water and a retarder that retards the hydrolysis of the oligomer.
Claims27
A method of forming a silica or silica-like film coated on a substrate including the steps of:
- producing a precursor formulation by adding to a solvent an hydrolysable silicate oligomer of the form:
- where each X is independently selected from a range of hydrolysable or non-hydrolysable groups with the proviso that at least three X must be hydrolysable groups;
- forming a coating of the precursor formulation on the substrate;
- and then curing the coating by hydrolysing and condensing the coating in a vapourous environment that comprises a base, water and a retarder, said retarder retarding hydrolysis of the hydrolysable silicate oligomer.
1 more element
A method of forming a precursor formulation including the steps of:
- mixing an hydrolysable silicate oligomer of the form:
- where each X is independently selected from a range of hydrolysable or non-hydrolysable groups with the proviso that at least three X must be hydrolysable groups;
- with a solvent.
A precursor formulation comprising;
- about 1 part hydrolysable silicate oligomer of the form:
- where each X is independently selected from a range of hydrolysable or non-hydrolysable groups with the proviso that at least three X must be hydrolysable groups;
- about 0.2-100 parts alcohol;
- and
- about 0.01-1 part water.
2 more elements
Dependencies are inferred from the claim text.