Acetone/formaldehyde/cyanide resins
AssigneeHalliburton Company
InventorLarry Eoff
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Abstract
A composition for and method of dispersing particles of hydraulic cement in a slurry of hydraulic cement in water, wherein the composition is the reaction product of a ketone, an aldehyde, a cyanide and, optionally, a sulfite. The dispersant properties of the composition can be enhanced by further reacting the composition with hydroxide.
Claims20
A composition useful to disperse particles of hydraulic cement in water wherein said composition is made by the reaction of at least three different compounds said compounds being selected from a ketone, as a first compound, an aldehyde, as a second compound, and an alkali or alkaline earth metal cyanide as a third compound, to thereby produce a first reaction product:
- wherein the mole fraction of said ketone present in said reaction is an amount in the range of from about 0.1 to about 0.6;
- the mole fraction of said aldehyde present in said reaction is an amount in the range of from about 0.2 to about 0.7;
- and the mole fraction of said cyanide present in said reaction is an amount in the range of from about 0.05 to about 0.4.
A method of dispersing particles of hydraulic cement in a slurry of hydraulic cement in water comprising combining with said slurry an effective amount of a dispersant composition made by the reaction of a ketone, an aldehyde, an alkali metal or an alkaline earth metal cyanide and, optionally, an alkali metal or an alkaline earth metal sulfite;
- wherein, on a mole fraction basis of the reactants in said reaction, said ketone is present in said reaction in an amount in the range of from about 0.15 to about 0.45 mole fraction, said aldehyde is present in said reaction in an amount in the range of from about 0.35 to about 0.65 mole fraction, said cyanide is present in said reaction in an amount in the range of from about 0.075 to about 0.35 mole fraction an said sulfite is present in said reaction in an amount in the range of from 0 to about 0.15 mole fraction.
Dependencies are inferred from the claim text.