Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Adhesive outermost layer
Patent
1989-09-21
1992-06-02
Seidleck, James J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Adhesive outermost layer
428325, 428364, 428443, 428454, 106699, 501 95, 501155, B32B 904, C04B 3552
Patent
active
051185440
ABSTRACT:
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.degree. C. to 1450.degree. C., the synthetic forsterite having an MgO: SiO.sub.2 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. .degree.F. ft.sup.2 and a fusion point of from 1600.degree. C. to 1700.degree. 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.
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Delvaux Pierre
Lesmerises Normand
Ceram-Sna Inc.
Nold Charles R.
Seidleck James J.
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