C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
6/226
C04B 35/20 (2006.01) B32B 9/04 (2006.01) C04B 35/14 (2006.01) C04B 35/636 (2006.01) C04B 35/80 (2006.01)
Patent
CA 1333953
Disclosed is a heat-resistant composition particularly useful to produce heat-resistant boards, tubes, linings or similar articles, capable of resisting to a high temperature for a substantial period of time. The composition comprises from 30 to 70% by weight of a fibrous-like, synthetic forsterite obtained by calcination of chrysotile asbestos fibers at a temperature of from 650°C to 1450°C, the synthetic forsterite having an MgO: SiO2 ratio lower than 1.1, a raw loose density of from 3 to 40 pcf, a thermal conductivity "k" factor of from 0.25 to 0.40 BTU. in/hr.°F.ft2 and a fusion point of from 1600 C to 1700°C. The composition also comprises colloidal silica as a binder. If desired, the composition may further comprise reinforcing fibers in such an amount as to give sufficient strength to the composition to make it operative depending on the intended use of the article produced therefrom. This composition can be used in particular to produce fire proofing construction boards, heat-resistant seals or rollers, sleeves, casting molds or furnace insulating components.
612311
Delvaux Pierre
Lesmerises Normand
Cerminco Inc.
Robic
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