Hydroxy-aluminum chloride and sulfate polymer production
AssigneeChevron Research Company
InventorClive Hodgson
Life of this patent
Estimating the term…
Abstract
Hydroxy-aluminum chloride or sulfate polymer is produced by reacting urea and aluminum chloride or aluminum sulfate in aqueous solution. The hydroxy-aluminum chloride and sulfate polymers are useful for consolidating soil in secondary oil recovery and for reducing the caking tendency of ammonium salt fertilizer compositions.
Claims17
A process of preparing hydroxy-aluminum chloride or sulfate which comprises reacting urea and aluminum chloride or aluminum sulfate, wherein the molar ratio of aluminum chloride to urea varies from about 1:0.1 to 1:1.3 and the molar ratio of aluminum sulfate to urea varies from about 1:0.1 to 1:2.6, at a temperature of about 50.degree. to 150.degree. C, in aqueous solution medium of about 1 mol to 1000 mols water per mol of urea.
A process of preparing hydroxy-aluminum sulfate polymer which comprises reacting urea and aluminum sulfate wherein the molar ratio of aluminum sulfate to urea varies from about 1:1 to 1:2.5 and the molar ratio of aluminum to hydroxyl in the hydroxy-aluminum polymers varies from about 1:1 to 1:2.5, at a temperature of about 50.degree. to 150.degree. C, in aqueous solution medium of about 1 mol to 1000 mols water per mol of urea.
Dependencies are inferred from the claim text.