Solid water-soluble aluminum phosphate complexes and binder composition which dissolve in water to give solutions containing aluminum ions and orthophosphate ions in such proportions as to provide an Al:P ratio of substantially 1:1 together with the anions of a carboxylic acid or a mineral oxyacid.
A solution of an aluminium phosphate binder in a diluent, and refractory compositions containing the solution, the solution comprising aluminium ions and phosphate ions in a molar ratio of Al:P of 0.8:1 to 1.2:1 and other acidic anions (other than oxyphosphorus acid anions), the molar ratio of other acidic anions: Al being in the range 1.3:1 to 2:1.
There is disclosed novel glass fiber particularly useful for preparing formed insulating articles having on the surface of the fibers an amorphous aluminum phosphate polymer wherein the polymer resiliently tacks the glass fibers together so as to provide regain of shape after deformation of the fibers as by compression. Also disclosed is a process for preparing glass fiber articles wherein the fibers are contacted with an ionic polymer which is then dehydrated to form an amorphous non-hygroscopic polymer.
There is disclosed novel glass fiber particularly useful for preparing formed insulating articles having on the surface of the fibers an amorphous aluminum phosphate polymer wherein the polymer resiliently tacks the glass fibers together so as to provide regain of shape after deformation of the fibers as by compression. Also disclosed is a process for preparing glass fiber articles wherein the fibers are contacted with an ionic polymer which is then dehydrated to form an amorphous non-hygroscopic polymer.
Novel aluminum phosphates, in particular amorphous aluminum phosphate powders having a BET specific surface no greater than 25 m.sup.2 /g, well suited as binders/hardeners or for the production of ceramic shaped articles, are prepared by reacting at least one aluminum compound, e.g., an aluminum oxide, hydroxide or oxyhydroxide, with phosphoric acid or an aluminum phosphate, e.g., an acid aluminum orthophosphate, in a liquid reaction medium devoid of inorganic acid anions other than of phosphoric acid, and then spray- or freeze-drying the suspension thus obtained.
4226626 - Binder composition containing alcohol - Owned by Ashland Oil, Inc. (Ashland, KY) [*] Notice:The portion of the term of this patent subsequent to May 16, 1995 has been disclaimed.
A binder composition comprising aluminum phosphate, water, material containing an alkaline earth metal and an oxide, and certain solid polyhydric alcohols.
