CELLULAR COMPOSITION FOR FIREPROOFING COVERING Russian patent published in 2002 - IPC

FIELD: fire-fighting facilities. SUBSTANCE: foam composition for fireproofing covering applied to metallic and nonmetallic substrate contains methylphenylsiloxane rubber as polymeric base, silicosilazane as hardener, intercalated graphite and perlite blend as foaming agent, boron nitride as fireproofing compound, and further contains methylphenylsiloxane resin. Said components are used in the following ratio, weight parts: methylphenylsiloxane rubber 100; silicosilazane 5-20; intercalated graphite 15-30; perlite 15-30; boron nitride 15-30; methylphenylsiloxane resin 8-20; organic solvent 40-90. Covering has improved resistance to high pressure, flame temperature of 1,100-50 C. Also, covering does not release substantial amounts of smoking gaseous substances. EFFECT: improved fireproofing quality of covering and increased ecology control. 2 cl, 2 tbl