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US 6,484,441 B1Granted
Method for increasing the pH value in acidic soil
AssigneeStockhausen GmbH & Co. KG
InventorsAloys Hüttermann, Moitoba Zomorrodi
Life of this patent
Estimating the term…
Abstract
In a method for raising the pH in acidic soils, said acidic soils are treated with crosslinked polyacrylates or polymethacrylates.
Claims18
A method of treating acidic soil with cross-linked polyacrylates or polymethacrylates comprising treating acidic soil with poly(meth)acrylates in the form of poly(meth)acrylic acid and/or methacrylic acid/(meth)acrylate copolymer having a carboxylate fraction in the range of 50-30 mol %, excluding the value of 30 mol %, and wherein the soluble fraction is less than 15% of weight to raise the pH of the acidic soil.
Dependencies are inferred from the claim text.