Aqueous dispersion of ground slag
AssigneesGeochemical Corporation, W. J. Clarke
InventorWilliam J. Clarke
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Abstract
Disclosed is a novel composition comprising water, ground blast furnace slag and a low molecular weight polymeric dispersant. The dispersant is a polymer of acrylic acid, having a molecular weight between 1000 and 20,000, and being in the form of the acid or the salt of an alkali metal or ammonia. A process for preparing a dispersion having the novel composition is also disclosed.
Claims22
In a composition comprising water, a ground blast-furnace slag having a specific surface area greater than 3000 cm.sup.2 per gm, and, to disperse the slag in the water, an effective amount of an addition polymer the improvement comprising the polymer being a polymer of (1) at least 70 percent acrylic acid and (2) the remaining up to 30 percent, by weight, selected from the group consisting of other carboxylic acid monomers and noncondensing monomers;
- the polymer having a molecular weight from about 1000 to about 20,000 and being unneutralized or the salt of an alkali metal or ammonia.
In a composition comprising water, a ground blast-furnace slag having a specific surface area greater than 3000 cm.sup.2 per gm, and an amount greater than zero and up to three percent by weight, based on the weight of the slag, of an addition polymer the improvement comprising the polymer being a polymer of (1) at least 70% acrylic acid and (2) the remaining up to 30 percent, by weight, selected from the group consisting of other carboxylic acid monomers and noncondensing monomers;
- the polymer having a molecular weight from about 1000to about 20,000 and being unneutralized or the salt of an alkali metal or ammonia.
In a process for preparing a slag dispersion which comprises combining a ground blast-furnace slag having a specific surface area greater than 3000 cm.sup.2 per gm, water and, to disperse the slag in the water, an effective amount of an addition polymer the improvement comprising the polymer being a polymer of at least 70% acrylic acid and the remaining up to 30 percent, by weight, selected from the group consisting of other carboxylic acid monomers and noncondensing monomers;
- the polymer having a molecular weight from about 1000 to about 20,000 and being unneutralized or the salt of an alkali metal or ammonia, and intensively agitating the combination to disperse the slag in the water.
Dependencies are inferred from the claim text.