Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Reexamination Certificate
2006-06-20
2006-06-20
Sample, David (Department: 1755)
Chemistry of inorganic compounds
Silicon or compound thereof
Oxygen containing
C423S333000
Reexamination Certificate
active
07063825
ABSTRACT:
A method for producing synthetic magadiite, including the step of: heating a liquid aqueous colloidal silica suspension, the liquid aqueous colloidal silica suspension having a mole ratio of sodium hydroxide to silica and a mole ratio of water to silica effective to produce a synthetic magadiite wherein more than fifty percent by weight of the synthetic magadiite is platy synthetic magadiite. The synthetic platy magadiite can be converted to the acid form and: (a) heated to produce quartz-like plates; or (b) alkylated to produce an organophilic material. A method for the production of platy sodium octasilicate and a method for preparing a liquid aqueous colloidal silica dispersion having a mole ratio of silica to sodium oxide of 3.5 to 10 are further disclosed.
REFERENCES:
patent: 4582693 (1986-04-01), Desmond et al.
patent: 4626421 (1986-12-01), Zones
patent: 4806327 (1989-02-01), Rieck et al.
patent: 4859648 (1989-08-01), Landis et al.
patent: 5236681 (1993-08-01), Chu et al.
patent: 5236882 (1993-08-01), Shih et al.
patent: 5427758 (1995-06-01), Bauer
patent: 5717000 (1998-02-01), Karande et al.
patent: 6703501 (2004-03-01), Kim et al.
patent: 587742 (1959-11-01), None
patent: 220 585 (1985-04-01), None
patent: 221 723 (1985-05-01), None
Anthony et al., Handbook of Mineralo-GY, p. 491, 1995.
Garces, Juan M., “Hypothetical Structures of Magadiite and Sodium Octosilicate and Structural Relationships Between the Layered Alkali Metal Silicates and the Mordenite- and Pentasil-Group Zeolites”, pp. 409-418, Clays and Clay Minerals, 1988, vol. 36.
Lagaly, Gerhard, “Magadiite and H-Magadiite:-I. Sodium Magadiite and Some of Its Derivatives”, pp. 642-649, American Mineralogist, 1975, vol. 60.
McCulloch, Leon, “A New Highly Silicious Soda-Silica Compound”, pp. 2453-2456, American Chemical Society, May 20, 1952.
Iler, R. K., “Ion Exchange Properties of a Crystalline Hydrated Silica”, pp. 648-657, Journal of Colloid Science 19, 1964.
Endo, Kimiharu, “Formation of Intercalation Compounds of a Layered Sodium Octosilicate withn-Alkyltrimethylammonlium Ions and the Application to Organic Derivatization”, pp. 3352-3355, The Chemical Society of Japan, 1994, vol. 67, No. 12.
Garces Juan M.
Lakso Steven R.
Sample David
Susan Moeller Zerull
The Dow Chemical Company
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