Amino trimethylene phosphonic acid with content of greater than or equal to 90 percent and process for making same

An aminotrimethylene phosphonic acid and process technology, applied in the chemical industry, can solve the problems of difficult packaging, difficult control of on-site application, large storage and transportation energy consumption, etc.

Inactive Publication Date: 2005-11-23
CHANGZHOU JIAYOU CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of aminotrimethylene phosphonic acid solution, that is, the liquid aminotrimethylene phosphonic acid in the present invention, there are many deficiencies such ...

Method used

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  • Amino trimethylene phosphonic acid with content of greater than or equal to 90 percent and process for making same

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specific Embodiment approach

[0035] One of the specific embodiments, a preparation process of aminotrimethylene phosphonic acid with a content of 91%, uses commercially available aminotrimethylene phosphonic acid with a liquid weight percentage of 50% as raw material, and proceeds in accordance with the following steps :

[0036] 1. Prepare materials, take 1000kg liquid amino trimethylene phosphonic acid and put it into the reaction kettle;

[0037] 2. Slowly add 15g of sodium acetate;

[0038] 3. Stir. Stir slowly by hand in the same direction, and observe its crystallization status at any time;

[0039] 4. Slowly add 25g of absolute ethanol and stir slowly;

[0040] 5. Stand still for 10 to 12 hours, and dehydrate with a centrifugal dehydrator;

[0041] 6. The dehydrated solid aminotrimethylene phosphonic acid is dried by reverse convection with hot air at 70°C to obtain a solid aminotrimethylene phosphonic acid product with a content of 91%.

[0042] 7. Packaged and marketed after testing.

[004...

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Abstract

The invention discloses an amino trimethylene phosphonic acid (ATMP) with content of greater than or equal to 90 percent and process for preparation, wherein the product comprises (by weight percentage) amino trimethylene phosphonic acid 90-98%, unavoidable impurity substance 1-2%, and balancing water. The production process comprises the steps of stock preparation, charging sodium acetate as crystal nucleon, agitating, charging anhydrous alcohol as crystallizing aid agent, dewatering, and drying.

Description

technical field [0001] The invention relates to an aminotrimethylene phosphonic acid with a content ≥ 90% and a preparation process thereof, belonging to the technical field of chemical industry. Background technique [0002] Amino trimethylene phosphonic acid involved in the present invention is amino trimethylene phosphonic acid, its English abbreviation is ATMP, and its structural formula is: [0003] [0004] Aminotrimethylene phosphonic acid is a corrosion and scale inhibitor widely used in sugar fermentation tanks, central air conditioners, chromium-free passivation treatment of copper refrigeration parts, hot water boilers, etc. [0005] The content of aminotrimethylene phosphonic acid currently available is relatively low, generally below 50%, and its physical form is liquid at normal temperature. Aminotrimethylene phosphonic acid with a high content such as a content ≥ 90% has not only not been available in the market, but has not been reported. [0006] In vie...

Claims

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Application Information

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IPC IPC(8): C07F9/38
Inventor 吴林华赵荣明陈志龙
Owner CHANGZHOU JIAYOU CHEM CO LTD
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