Abstract: A fireproofing material for application to flammable surfaces is based on an alkali metal silicate solution containing a non-ionic surfactant in combination with an alkali metal tri-silicate powder. The composition according to the invention is easily applicable to plane surfaces with ordinary tools, for example, spatulas, yet will not run either when applied or when subjected to flame.

Abstract: A method for insulating an object with a protective coating under unfavorable conditions of, for example, high humidity, without separation or running of the binding material. The method provides for making a coating consisting of mineral fibers and a binder which includes one or more alkali silicates as well as one or more organic polymers for silicon dioxide. This binder and the mineral fibers are applied to the object together with a hardener for the binder, at the time of application to the object. The invention further describes an apparatus for simultaneous spray application of fibers, binder and hardener to the object to be protected.

Abstract: A cold hardening binding agent for binding particulate solid materials is based on a mixture of a polyhydroxy compound and a polyisocyanate, and the polyhydroxy compound consists at least in part of a nitrogen basic polyol. The nitrogen basic polyol accelerates reaction and hardening time. An alkali or alkaline earth metal acetate or formate may also be employed to accelerate hardening.