Inorganic-organic compositions

Abstract

Inorganic-organic compositions obtained from a mixture of components comprising: (a) from 5-98% by weight of an organic polyisocyanate; (b) from 2-95% by weight of an aqueous alkali metal silicate solution containing about 20-70% by weight of said alkali metal silicate; and (c) from 0-93% by weight of a water-binding component Based on the total weight of (a), (b) and (c) with the proviso that when (c) is 0-20% by weight (a) contains 2-200 milliequivalents of ionic groups per 100 grams of said polyisocyanate. Flexible inorganic-organic plastics which have a low calorific value and improved fire characteristics are prepared from a reaction mixture containing (a) 30 to 70 percent by weight of one or more compounds with Zerewittinoff-active hydrogen atoms which have an average molecular weight of 400 to 6000, preferably 1000 to 6000, and a glass temperature below 10.degree. C, preferably below -20.degree. C; (b) 10 to 30 percent by weight of an organic polyisocyanate; and (c) 20 to 60 percent by weight of an aqueous alkali metal silicate solution which has a solids content of between 30 and 70 percent by weight. The organic polyisocyanate may be one which contains a phenolic hydroxyl group. The products of the invention may be used in many forms including both porous and non-porous products as surface coatings having good adhesion and resistance to abrasion, as a mortar, as a flexible elastomer, and as a foam concrete for making molded products particularly in construction engineering and civil engineering as for building walls, igloos, road buildings and the like.

Dependencies are inferred from the claim text.