Ametex Ag

Amiantus, (a.g.)

Otto W Gordon

Peter E Meier

Gero Buttiker

Asbestos-free, fiber-reinforced, hydraulically setting compositions can be processed to fiber-reinforced shaped articles. The compositions are obtained by mixing fibers, hydraulic binders and water-soluble or water-emulsifiable polymers and by adding a metallic compound, particularly a metal salt or hydroxide. The composition can be processed in the equipment conventionally used in the asbestos cement industry.

Process for producing a fiber-reinforced, hydraulically setting

Asbestos-free fiber reinforced hydraulically setting materials, which comprise a slurry of one or more hydraulic binding agents, fibers, water and perhaps additional additives, are obtained when, as fiber, 2 to 20% by volume of filter fibers and 0,5 to 20, preferably 1 to 10% by volume reinforcing fibers are used, both of which are subjected to preliminary treatment which improves their dispersability. By means of the preliminary treatment the fibers can be uniformly distributed in the slurry. The material can be worked on apparatus common for the production of asbestos cement and used for the same purposes as asbestos cement.

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Oberurnen, Switzerland

Otto W Gordon