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Production technology of amino trimethylene phosphonic acid (ATMP)

Production technology of amino trimethylene phosphonic acid (ATMP)

The present invention belongs to the field of chemical industry,atmp phosphonate specifically discloses a process for the production of amino trimethylene phosphonic acid. The production process includes the following steps: (1) ammonium chloride was added to the kettle, phosphorous acid aqueous solution and water, heated to 60 ℃ ~ 70 ℃ and sufficiently stirred to completely dissolve the material; formaldehyde solution was then added dropwise, and the temperature control at 90 ℃ ~ 105 ℃, after completion of the dropwise addition of formaldehyde incubated for 1.5 to 3 hours, HCl generated was recovered by recovery of hydrochloric acid; turn fed to a distillation kettle after (2) incubation, slowly heated to 110 ~ 120 ℃ when remove unreacted ammonium chloride, formaldehyde, until no material was distilled off, the cooling water through cooling, discharge products. The one-step synthesis process, short production period, readily available raw materials, low production cost, good reproducibility and easy industrial production.
ATMP CP bonds because of the amino phosphonic acid and stable in water, hard to be hydrolyzed. In water at higher concentrations, it has a good inhibition effect. ATMP for the power plant, refinery cooling water, oil field injection water system, a metal may serve to reduce fouling and corrosion of equipment or piping effect. ATMP Since higher concentrations, the addition of other water treatment agents can inhibit the growth of cyanobacteria and the like. ATMP will state control cyanobacteria, maintain the ecological balance of the water plays an important role.

[0005] ATMP in the textile industry as metal ion sequestrants can also be used for metal surface treatment agent. ATMP good chemical stability, hard to be hydrolyzed, and high temperature, when used with zinc salt, copolymer compound, and has good synergy threshold effects at high doses the product also has a good corrosion performance, and are non-toxic, non-pollution agents, this product has good dispersion properties of calcium carbonate scale inhibitors.

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