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Anionic polymers containing N-vinyl-pyrrolidone or other vinyl amides as scale inhibitors for preventing or reducing calcium phosphate and other scales
Anionic polymers containing N-vinyl-pyrrolidone or other vinyl amides as scale inhibitors for preventing or reducing calcium phosphate and other scales
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机译:含有N-乙烯基吡咯烷酮或其他乙烯基酰胺作为防止或减少磷酸钙和其他水垢抑制剂的阴离子聚合物
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摘要
A method of inhibiting scale, generally and specifically and preferably calcium phosphate and calcium carbonate scale, which is found on metal surfaces in contact with industrial cooling waters, boiler waters, oil well drilling waters, and evaporated sea water, which comprises treating the water present in such systems with a few ppm of a water-soluble anionic co- or terpolymer of N-vinyl-2-pyrrolidone (NVP) or vinyl amide. The preferred anionic comonomers are either acrylic or methacrylic acid.
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