C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
6/212
C04B 28/26 (2006.01) C03C 10/00 (2006.01) C03C 10/10 (2006.01) C04B 14/20 (2006.01) C07F 7/18 (2006.01) C07F 11/00 (2006.01)
Patent
CA 1201558
Abstract of the Disclosure This invention is directed to the preparation of an organic-inorganic composite body demonstrating hydrophobic behavior containing crystals of an organic polycation- exchanged lithium and/or sodium water-swelling mica, the organic polycation being selected from the group of aminosilanes and organic chrome complexes. The process of preparing such products contemplates the steps of: (a) forming a glass-ceramic body containing crystals selected from the group of fluorhectorite, hydroxyl hectorite, boron fluorphlogoplte, hydroxyl boron phlogopite, and solid solutions among those and between those and other structurally-compatible species selected from the group of talc, fluortalc, polylithionite, f1uorpolylithionite, phlogopite, and fluorphlogopite; (b) contacting said body with a polar liquid for a time sufficient to cause swelling and disintegration thereof accompanied with the formation of a gel; and (c) contacting said gel with a source of organic polycations selected from the group of aminosilanes and chrome complexes to cause an ion exchange reaction to occur between said polycations and the Li+ and/or Na+ ions from the interlayer of said crystals, whereby essentially all of said Li+ and/or Na+ ions are replaced with said organic polycations. Paper, board, film, fiber , and coating can be formed from the exchanged gel, and dried powders thereof can be hot pressed to yield a body consisting of a cross-linked organic polycation-mica derivative.
441208
Hoda Syed N.
Olszewski Anthony R.
Corning Glass Works
Gowling Lafleur Henderson Llp
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