A novel solution for adding fire resistance to finely divided wood, cellulosic and fabric containing materials is described. This solution is a particular mixture of silicates of varying viscosity and
For the preparation of this composition, the various components may be introduced in the order indicated above. The composition according to the invention is in the form of an aqueous medium which it is convenient to spray, by means of any suitable spray container, directly onto the textiles to...
in a spray dryer or in a standard paddle dryer, into solid commercial preparations which can be redispersed at any time. The grinding of the solid sulphurylamides is performed in customary devices suitable for such purposes, e.g. in a glass-ball mill, in a sand mill or in a corundum...
Spray-dried powders are commonly made in the usual spray-drying equipment. Spray-drying is usually effected by means of a rotating disc or of multi-component nozzles. Detailed techniques are described for instance in K. Masters, Spray-drying Handbook, Longman Scientific and Technical, 1991. ...