Composition and process for modifying gelation of alkali metal silicates
AssigneeDiamond Shamrock Corporation
InventorsThomas M. Vickers, Larry J. Powers
Life of this patent
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Abstract
A liquid alkali metal silicate composition comprises water, an alkali metal, e.g., sodium silicate, glyoxal, optionally a Group I-III metal salt, e.g., calcium chloride, and hydrogen peroxide, and from 0.5 to 2.0 moles of a polyhydroxy compound per mole of glyoxal used. The specific polyols are mannitol, glycerol and sucrose. This composition is easily pumpable and injectable at a temperature of 100.degree. F. or higher.
Claims14
In a liquid alkali metal silicate composition curable to a solid upon standing and comprising water, an alkali metal silicate and glyoxal, the improvement which comprises incorporating into said composition, for each mole of glyoxal used, from 0.5 to 2.0 moles of a polyhydroxy compound selected from the group consisting of mannitol, glycerol and sucrose, whereby the gel time of the resulting composition is significantly inhibited by comparison to a liquid alkali metal silicate-glyoxal composition and it is easily pumpable at an application temperature of 100.degree. F. or higher.
In a method of stabilizing soil which comprises contacting said soil with a sole liquid composition comprising 10 to 70 percent by volume of an aqueous alkali metal silicate having an alkali metal oxide:silicon dioxide ratio of 1.0:3.0-4.0;
- about 0.25 to 1.05 moles of glyoxal per liter of composition;
- and water, the improvement which comprises adding to said composition, for each mole of glyoxal used, from 0.5 to 2.0 moles of a polyhydroxy compound selected from the group consisting of mannitol, glycerol and sucrose, whereby the gel time of the composition is inhibited and the composition is easily pumpable at a temperature of 100.degree. F. or higher.
Dependencies are inferred from the claim text.