Compositions: ceramic – Ceramic compositions – Pore-forming
Patent
1987-10-16
1989-12-19
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Pore-forming
423 85, 423118, 423122, 423338, 264 42, C04B 3800
Patent
active
048883093
ABSTRACT:
Three dimensional hydrophobic substantially inorganic porous structure comprises a myriad of cavities interconnected by holes in which the diameters of the cavities are in the range of from 0.5 to 100 .mu.m and the diameters of the holes are in the range of from 0.1 to 20 .mu.m the porosity of the structure having a narrow pore size distribution with the cavities having a pore volume of at least 2 cc/g for a predetermined 10 .mu.m range of sizes. The structure is preferably an inorganic oxide selected from the group comprising alumina, silica, titania, zirconia and mixtures thereof. The structure is preferably made from an oil-in-water emulsion with a silylating agent in the internal phase so as to render the structure hydrophobic.
REFERENCES:
patent: 3301635 (1967-01-01), Bergna et al.
patent: 3857924 (1974-12-01), Halasz et al.
patent: 3892580 (1975-07-01), Messing
patent: 4011096 (1977-03-01), Sandell
patent: 4089932 (1978-05-01), Maira et al.
patent: 4190457 (1980-02-01), McDaniel
patent: 4448914 (1984-05-01), Drinkuth et al.
patent: 4654314 (1987-03-01), Takagi et al.
European Search Report (EP 87 30 9066).
Bell Mark L.
Brunsman David M.
Unilever Patent Holdings BV
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