Abstract: Mag-oxy cements are made by either molding or heat treating after molding at elevated temperatures. The products are made utilizing colloidal silica and/or phosphates and the products are made by either molding or by heat treating after molding at elevated temperatures.The products treated at 250.degree. F. show considerably less solubility particularly where both phosphates and silicates are present in which case the weight loss based on the reactables may be as low as approximately 2 percent. When heat treated at 300.degree. F., there is no weight loss in practically all cases; but a pickup in weight occurs indicating an additional hydration. Sheet molding compounds are also made by processes which provide a deficiency of water of hydration.

Abstract: A scratch resistant, flame resistant material is made by producing a sheet molding compound of a melamine-aldehyde precondensate, silica, alumina trihydrate, slightly soluble soap, ammonium hydroxide and acid salt catalyst. The sheet molding compound is applied to the surface of a pelt of glass fibers containing a heat curable binder and the composite is bonded together under heat and pressure to cure both binders simultaneously and bond the sheet molding compound to the fiber layer of the pelt.

Abstract: A process of making a mat of glass fibers wherein a strand of glass fibers frictionally engages the surface of a revolving cylinder from which the strand is tangentially discharged onto a moving conveyor. The strand is caused to be randomly looped upon the conveyor by alternate blasts of air which laterally impinge upon the strand to throw the strand in a looped fashion from side to side across the conveyor. More efficient and sustained operation in the processing of glass fiber mat is obtained by wetting the individual filaments of glass with a water solution comprising organosilane, nonionic lubricants, and acidic salt, which water solution eliminates wheel wrap of the glass fiber strand around the revolving cylinder without adversely affecting other desirable properties of the strand and the mat.

Abstract: Frothed molding compositions comprising a film of uncured binder uniformly dispersed throughout a fibrous matrix, wherein the molding composition is frothed in the presence of frothing agents of salts of fatty acids, are disclosed. These frothed molding compositions can be used in molding doors, panels and miscellaneous shapes for structural and furnishing applications.