Chemical Composition for Production of Hollow Spherical Glass Particles with High Compressive Strength
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United States of America Patent
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Nov 7, 2019
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Jul 10, 2019
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Dec 21, 2015
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Abstract
A hollow spherical glass particle, comprising aluminum oxide Al2O3, silicon dioxide SiO2 and at least one metal oxide, wherein the metal oxide is selected from the group consisting of alkali metal oxides and alkaline earth metal oxides, wherein the ratio of aluminum atoms to alkali metal atoms is about 1:1 and the ratio of aluminum atoms to earth alkali atoms is about 2:1, with the proviso that the hollow spherical glass particle is free of boron.
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