A process is provided for making an inorganic-organic plastic having improved compression strength, elasticity, dimensional stability to heat and flame resistance wherein an organic polyisocyanate is reacted with an aqueous solution of an alkali metal silicate or aqueous silica sol in a mixture containing an organic amphiphilous compound having 1 to 9 carbon atoms, such as an alcohol. The product may be used as a constructional component of a building.
An inorganic-organic plastic having improved strength, elasticity, dimensional stability with increase in temperature and flame resistace and adapted for use in filling cracks and cavities and for making materials useful in the building industry is prepared by (1) premixing (c) an organic compound having at least two reactive hydrogen and at least one non-ionic hydrophilic group with (b) an aqueous silicate and then mixing the resulting mixture with (a) an organic polyisocyanate or (2) mixing (a), (b) and (c) simultaneously and reacting the mixture thus obtained to form a colloidal xerosol.
Polyurethane foam products having relatively noncombustible properties, low flame spread ratings and low smoke generating tendencies when exposed to fire can be produced by combining aqueous sodium silicate into the foam forming composition which also includes a viscous, hydroxyl-terminated polyester and a polyisocyanate prepolymer or quasi-prepolymer along with a suitable catalyst, surfactant and halogenated alkane blowing agent. The aqueous sodium silicate ingredient constitutes from about 30 to 60 percent by weight. The aqueous sodium silicate has a weight ratio of SiO.sub.2 /Na.sub.2 O of 2.4 to 3.0 and contains 25 to 75 percent by weight water. The resulting foam, with a density of 1.5 to 4.5 pounds per cubic foot, has a K-factor less than 0.26 and is useful as a thermal insulating substance, especially in building panels.
A coated cloth, wherein a blend containing from 50 to 400 parts by weight of a hydroxide and more than 3 parts by weight of powdery fibers based on 100 parts by weight of a base polymer not containing halogen elements is coated on a cloth. The coated cloth is excellent in abrasion resistance and flame retardance, as well as releasing less smoke.
Polyisocyanates are reacted chemically with an oxidated silicon compound to produce a polyisocyanate silicate prepolymer. The polyisocyanate silicate prepolymer will react with organic compounds to produce a polyisocyanate organic silicate solid/cellular solid product.
Silicic acid is reacted with a suitable polyalcohol by using heat and an alkali catalyst to produce a polyalcohol silicate. The polyalcohol silicate is then reacted with a suitable isocyanate to produce a poly(urethane silicate) resin. An activator, such as water, may be mixed with the said resin to cause foaming and/or cross linking of the polymer.
