Process for phosphating asbestos fibers

Details Process for phosphating asbestos fibers Process for phosphating asbestos fibers

C - Chemistry, Metallurgy

04

B

23/190

C04B 35/82 (2006.01) C03C 25/42 (2006.01)

Patent

CA 1213416

ABSTRACT OF THE DISCLOSURE There is disclosed an improved process for phosphating asbestos fibers by reacting phosphorus chlorides with asbestos fibers in a first reaction vessel heated to a temperature within the range of the boiling temperature of the selected phosphorus chloride at atmospheric pressure and 200°C above the boiling temperature of said phosphorus chloride, then the phos- phated asbestos fibers are cured in a second chamber and purged of any volatile by-product formed during the phosphating step. The products obtained possess reduced haemolytic activity.

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