Dry powder compositions of vermiculite lamellae and additives

Details Dry powder compositions of vermiculite lamellae and additives Dry powder compositions of vermiculite lamellae and additives

C - Chemistry, Metallurgy

04

B

6/219

C04B 30/00 (2006.01) C04B 14/20 (2006.01)

Patent

CA 1169203

ABSTRACT A free-flowing, dry powder composition is provided comprising vermiculite lamellae (delaminated vermiculite) that are platelets having a thickness of less than one tenth of a micrometer. Preferably the composition also contains a solid particulate addivive such as magnesium oxide which additive imparts improved strength and water stability to solid products made from the dry powder. The very low thickness platelets of the invention provide formed or cast products made therefrom which exhibit im- proved compressive strength and density compared to similar products made from conventional, particulate vermiculite.

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