Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1973-04-16
1979-08-28
Niebling, John F.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
106 50, 106 48, 106 57, 106 733, 106 7333, 106300, 423610, 252310, 252317, 264 15, 264176F, 264204, 428404, 428407, C04B 3500, C08K 322, C09C 136
Patent
active
041661478
ABSTRACT:
Solid, shaped and fired refractory articles, such as fibers and microspheres, of titanium dioxide are made by shaping, gelling, and firing titania sols. Said fibers can be made by extruding in air a viscous aqueous titania sol, and heating and firing the resulting green fiber to remove water, decompose and volatilize undesired constituents, and form a refractory fiber of polycrystalline titanium dioxide, which is useful, for example, to form refractory fabrics or as reinforcement for composites. Said microspheres can be made by dispersing droplets of an aqueous titania sol in an organic dehydrating liquid, separating the resulting green microspheres from the dehydrating liquid, and heating and firing the green microspheres to form solid refractory microspheres of polycrystalline titanium dioxide, which are useful, for example, in reflective signs or traffic marking surfaces. Said fired fibers and microspheres are preferably transparent to visible light with the titanium dioxide content thereof in its anatase form.
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Kirk-Othmer, Encyclopedia of Chemical Technology, vol. 20, p. 393.
Schroeder, H., "Physics of Thin Films"--Edited Hass t Thun--vol. 5 (1969), Academic Press--"Oxide Layers Deposited from Organic Solutions", pp. 87-141, pp. 105 and 107.
Lange Roger W.
Sowman Harold G.
Alexander Cruzan
Ewert William G.
Minnesota Mining and Manufacturing Company
Niebling John F.
Sell Donald M.
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