Patent ID: 6068795
Filing Date: 2000-05-30
Classification: C09K

Abstract:
A product for providing fire resistance and acoustic and thermal insulation, consisting of:a silica-containing refractory solid in finely divided or powdered particulate form, present in an amount sufficient to intumesce to a predetermined volume when exposed to a predetermined amount of heat; andan aqueous sodium silicate solution present in an amount sufficient to act as an agent in producing a foaming process whereby the finely divided solid is so bonded as to form a cellular structure, wherein the sodium silicate solution consists essentially of SiO.sub.2, Na.sub.2 O and water, and wherein the weight ratio of SiO.sub.2 to Na.sub.2 O is about 2.40;wherein the product produces substantially no toxic fumes or gases upon exposure to excessive heat or fire.