Thin silica flakes and method of making

Details Thin silica flakes and method of making Thin silica flakes and method of making

B - Operations, Transporting

01

J

23/192, 252/31,

B01J 20/10 (2006.01) B01J 20/28 (2006.01) C01B 33/12 (2006.01) C01B 33/152 (2006.01) C09D 7/12 (2006.01) C09D 157/00 (2006.01) C09D 187/00 (2006.01)

Patent

CA 2008449

Abstract of the Disclosure Hydrated sodium silicate particles can be expanded by heat to form thin-walled bubbles that can be broken, neutralized, washed and dried to provide hydrated silica flakes. These flakes can be mixed with non-swelling sorptive particles such as TLC grade silica and used to make chromatographic articles. One such article is a composite of a poly(tetrafluoroethylene) fibril matrix in which those particles and hydrated or fired silica flakes are enmeshed. The hydrated silica flakes can be fired to a refractory state and then incorporated into protective coatings to enhance their resistance to abrasion while also better protecting the coated substrates from corrosion.

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