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US 5,858,244 AGranted
Use of biodegradable polymers in prevention scale build-up
AssigneeNalco Chemical Company
InventorsJiansheng Tang, Ronald V. Davis
Life of this patent
Estimating the term…
Abstract
A biodegradable scale inhibitor and dispersant is provided. The scale inhibitor includes a copolymer comprising at least one of N-oxygenatedhydrocarbonamide monomers and at least one of amino acid monomers. A method of reducing scale build-up on heating exchanger surfaces that come in contact with an industrial water is provided by adding a copolymer comprising at least one of N-oxygenatedhydrocarbonamide monomers and at least one of amino acid monomers to the water system such as cooling towers.
Claims7
A method of reducing scale build-up on metallic surfaces caused by an aqueous system, the method comprising:
- adding a scale inhibiting composition to the aqueous system at a sufficient dose to reduce scale build-up, the composition comprising a polymer formed from at least one N-oxygenatedhydrocarbonamide monomer and at least one of amino acid monomer.
Dependencies are inferred from the claim text.