Inorganic-organic plastic
AssigneeBayer Aktiengesellschaft
InventorsPeter Markusch, Dieter Dieterich, Helmut Reiff
Life of this patent
Estimating the term…
Abstract
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.
Claims17
A process for producing an inorganic-organic plastic of high strength, elasticity, dimensional stability to heat, and flame resistance, comprising a polyureapolysilicic acid composite material in the form of a solid/solid xerosol, which process comprises mixing:
- A. an organic polyisocyanate or polyisothiocyanate;
- B. an aqueous alkali metal silicate solution containing 20-70% by weight of said alkali metal silicate, or an aqueous silica sol, and
- C. an organic additive, and
- allowing the resultant mixture to react, wherein said organic additive contains from 1 to 9 carbon atoms has a molecular weight of from 32 to 400 and is selected from the group consisting of monoalcohols, monothioalcohols, monophenols, monothiophenols, halomethyl group containing compounds, nitriles, esters, ethers, thioethers, ketones, nitro-group containing compounds, monocarboxylic acid chlorides, monocarboxylic acid bromides, monosulphonic acid chlorides, monocarboxylic acids or salts thereof, monosulphonic acids or salts thereof, and aldehydes, with the proviso that when said organic additive is a monoalcohol, monothioalcohol, monophenol, monothiophenol or monocarboxylic acid, said mixing of (A), (B) and (C) takes place substantially simultaneously.
An inorganic-organic plastic having high strength, elasticity, dimensional stability with increase in temperature and flame resistance prepared by the process which comprises substantially simultaneously mixing and reacting an organic polyisocyanate or polyisothiocyanate, an aqueous alkali metal silicate and an organic additive selected from the group consisting of monoalcohols, monothioalcohols, monophenols, and monothiophenols, said organic additive having a molecular weight of up to about 400, said inorganic-organic plastic being the solid/solid xerosol.
Dependencies are inferred from the claim text.