REFRACTORY SEALING MATERIAL FOR PREVENTING FIRE SPREADING

• Main Authors: YAMAMOTO YASUAKI, YASUDA KOKICHI, KIMURA KUNIO, TANMACHI MASAMI, KOBAYASHI KAZUHIKO
• Format: Patent
• Language: English
• Published: 13.01.1998
• Edition: 6
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To obtain the subject sealing material capable of improving workability of the dismantling of an opening part when extending an electric wire and performing reexecution and preventing the scattering of a refractory filer, by adding a phosphorus-based flame-retardant, a polyhydric alcohol, etc., in a specific ratio to a liquid polymer. SOLUTION: This material comprises (A) 100 pts.wt. of a liquid polymer, (B) >=5 pts.wt. of a phosphorus-based flame-retardant (e.g. ammonium polyphosphate), (C) >=5 pts.wt. of a polyhydric alcohol (e.g. pentaerythritol), (D) 10-200 pts.wt. of an alkali silicic acid compound (e.g. sodium metasilicate), (E) 1-50 pts.wt. of heat-resistant fibers (e.g. glass fibers) and (F) 10-200 pts.wt. of an inorganic filler. Preferably, the component A is an acrylonitrile butadiene rubber or a polychloroprene and the component F is a metal hydroxide such as aluminum hydroxide.