Patent ID: 8167995
Filing Date: 2012-05-01
Classification: C04B,Y02W

Abstract:
1. A method for making a synthetic inorganic resin, comprising: (a) forming a low-pH aqueous solution of phosphoric acid; (b) mixing a sparsely-soluble oxide, or sparsely-soluble oxide mineral, with said aqueous solution of phosphoric acid, while substantially continuously stirring and/or agitating to form a mixture and allow the pH of the formed mixture to increase to at least about 2.5 but not more than about 6.0 while maintaining the temperature of said mixture during said substantially continuous stirring and/or agitating below about 90° F., said sparsely-soluble oxide, or sparsely-soluble oxide mineral, added to said aqueous solution of phosphoric acid in an amount between about 40% molar and about 90% molar of the stoichiometric amount required to react with said aqueous solution of phosphoric acid; wherein said sparsely-soluble oxide or sparsely-soluble oxide mineral is selected from the group consisting of CaO, MgO, ZnO, MnO, FeO, CoO, Al (c) drying the formed mixture to form a synthetic inorganic resin having a pH higher than about 2.5.