Aqueous hydrides and method of manufacture therefore
AssigneeCoralplex, Inc.
InventorWilliam W. Berry
Life of this patent
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Abstract
Aqueous hydrides including a metal, a metal hydroxide and water and a method of manufacture therefor are provided. The method includes a reaction which does not require precise stoichiometric proportions of metal, alkali hydroxide and water. The specific gravity of the reaction mixture is monitored and adjusted where appropriate during the reaction process. Temperature and rate of reaction are controlled to prevent formation of silicates. Aqueous by, rises produced in accordance with the invention exhibit polymer characteristics and are suitable for use as coatings, reducing viscosity, sequestering agents, emulsion agents, surfactants, detergents and the like.
Claims12
A method of manufacturing aqueous hydrides, comprising the steps of:
- placing in a tank at least twice an amount of metal required to produce a predetermined amount of reaction product;
- introducing a predetermined quantity of water into the tank in such a manner as to provide intimate contact with the metal;
- gradually adding a predetermined amount of an alkali hydroxide to the metal and water, thereby forming a reaction mixture and initiating a reaction, wherein the alkali hydroxide comprises a portion of the reaction mixture in the range of 25-40% by weight;
- maintaining a temperature of the reaction mixture in a range of 90.degree.-100.degree. C. and a specific gravity of the reaction mixture in a range of 1.6-1.7 until the reaction goes to completion;
- and
- cooling the reaction mixture to a temperature of approximately 50.degree.-60.degree. C. to form an aqueous hydride having a specific gravity in a range of 1.6-1.7 after cooling of the reaction mixture.
A method of manufacturing aqueous hydrides, comprising the steps of:
- placing in a tank at least twice an amount of silicon chunks required to produce a predetermined amount of reaction product;
- introducing a predetermined amount of water into the tank in such a manner that the water is below the level of silicon chunks;
- gradually adding a predetermined amount of sodium hydroxide to the metal and water, thereby forming a reaction mixture, wherein the alkali hydroxide comprises a portion of the reaction mixture in the range of 25-40% by weight;
- initiating a reaction by adding silicon fines to the reaction mixture until a temperature increase of approximately 10.degree. C. occurs in 5 minutes or less;
- maintaining a temperature of the reaction mixture in a range of 90.degree.-100.degree. C. and a specific gravity of the reaction mixture in a range of 1.6-1.7 until the reaction goes to completion;
- and
- cooling the reaction mixture to a temperature of about 50.degree.-60.degree. C., to form an aqueous hydride having a specific gravity in a range of 1.6-1.7 after cooling of the mixture.
Dependencies are inferred from the claim text.